Re: New washing detergent for mirrors prior to aluminizing
Hi,
I am a newcomer interested in that stuff.
I would have been interesred to know if I could directly after that aluminize thz mirror or I will have something to do ?
Charles Rydel
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Show quoted text
--- In VacuumX@..., Dave McGuire <Mcguire@...> wrote:
On 07/12/2012 01:03 AM, Guy Brandenburg wrote:
A friend of mine suggested Alconox as a new cleaning agent for use on
mirrors prior to aluminization. I have tried it and found that it seems
to work many, many times faster and more effectively at producing a
mirror that the water flows off of like a sheet. No other detergent
comes close. Nobody paid me anything for this testimonial; I don't know
if anybody on this list has tried the stuff. I second this recommendation. I've used Alconox for years to clean
lab glassware and related items. It's good stuff.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
|
Re: Tooling factor calculation help
Hi Vladimir,
Thank's a lot!
These results are good enough!
I guess I stay at these IS parameters, because it works well.
Best Regards
Attila ³§³¦³ó²Ô¨¦
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Show quoted text
--- In VacuumX@..., Vladimir Chutko <chutko@...> wrote:
Hi Attila,
The refraction index txt file is attached. Yes, It looks like your ion
source works well because the TiO2 refraction index is high enough,
congratulations!
It is very hard to give any recommendations regarding ion beam
parameters - the optimal parameters are different for different chambers
even with the same ion sources. I obtain optimal results for TiO2 at 180
V and 5 A discharge current, but my chamber is bigger than your one, I
use cryopump, my ion source works in O2 pressure range 7.5x10-5 - 1x10-4
torr. and distance between ion source and substrates is about 500 mm. I
use 150 V, 3 A only for SiO2 and for substrate pre-cleaning, for Al203,
TiO2, Ta2O5, ZrO2 I use 180V, 5A. Maybe it is not the best, but we
obtain good results and it is easy to set up for our technicians. So it
is very hard to compare, sorry. The best way is to try all possible
parameters.
Best regards and good luck!
Vladimir
On 8/29/2012 10:01 AM, Attila wrote:
Hi Vladimir,
Thank you very much indeed!
Well I did not find the attached txt.file. So what is the refractive index you calculated?
Well the thickness is could be real, because of the uniformity mask and the distance between the crystall and the substrate.So I can calulate the tooling now. I am very happy because my own built Ion Source works well.
Vladimir, what is your opinion about, the ion current density change. If I apply same IS power but lower Vd say 150V and higer Id say 3A. How affect this the ion current density, lower or higher or same?
Best Regards
Attila
--- In VacuumX@..., Vladimir Chutko <chutko@> wrote:
Hi Attila,
Please see attached files. The picture shows your data and spectra I've
designed for TiO2 film with Thk = 115.8 nm, deposited on one side of
BK7 glass 3 mm thickness. Calculated TiO2 refractive index dispersion
is in attached .txt file. The curves fit very good. We suppose that
absorption is zero, however below 400 nm TiO2 absorption strongly
increases, we usually do not work with TiO2 below 400 nm. Your TiO2 has
big enough refractive index because of ion beam assistance, it is good.
What do you think about these results?
Best regards,
Vladimir
On 8/11/2012 3:47 AM, Attila wrote:
Hi Vladimir,
Here are the datas I have:
The deposition rate was 2 Angstr?m/sec, I deposited 150nm of TIO2 at least the quartz monitor showed that.
That was an Ion beam assisted deposition. Substrate is about 300mm from the IS, parameters: Vd=240V Id=1,9A Iem(HF)=1,95A, O2 ions, not preheated substrate.
I have a uniformity mask over the Ebeam-gun, so it could be the deposited layer is somewhere around 100-120nm.
Thank's a lot!
BR.
Attila ³§³¦³ó²Ô¨¦
--- In VacuumX@..., Vladimir Chutko <chutko@> wrote:
Hi Attila,
Actually you have two unknown parameters - film thickness and refractive
index dispersion, so it is not easy to find thickness exactly just from
R or T spectra without some special software.
I'll try to help you. I have TiO2 films refractive index dispersion data
for TiO2 deposited on substrate heated up to 250C and TiO2 deposited on
cold or preheated substrate with ion beam assistance at 180 V, 5A O2
ions. I also have thin film coating software. Let me know how did you
deposit your film. It looks like your films are about 100 nm thickness.
What was the deposition time? What was the substrate temperature? Did
you use ion beam assistance and if you did, what were its parameters?
Best regards,
Vladimir Chutko
On 8/10/2012 6:42 AM, Attila wrote:
Hello,
Does anybody have the ability to calculate the TIO2 thin film layer thickness and refractive index, form spectrometer measurement datas?
I attached a folder and files to the files section.
Folder name: Thin film thickness. Where is two excel files. I did a transmittance measurement of a sample, where 150nm Thick Tio2 film was evaporated.
The substrate normal BK7 glass.
I can't compute the refractive index and the thickness from the datas because I don't know the methode, and the lack of knowledge.
I need this values for tooling factor calc.
Can anybody help me?
Thank's a lot!
Attila ³§³¦³ó²Ô¨¦
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
|
Re: Tooling factor calculation help
Hi Attila,
The refraction index txt file is attached. Yes, It looks like your ion source works well because the TiO2 refraction index is high enough, congratulations!
It is very hard to give any recommendations regarding ion beam parameters - the optimal parameters are different for different chambers even with the same ion sources. I obtain optimal results for TiO2 at 180 V and 5 A discharge current, but my chamber is bigger than your one, I use cryopump, my ion source works in O2 pressure range 7.5x10-5 - 1x10-4 torr. and distance between ion source and substrates is about 500 mm. I use 150 V, 3 A only for SiO2 and for substrate pre-cleaning, for Al203, TiO2, Ta2O5, ZrO2 I use 180V, 5A. Maybe it is not the best, but we obtain good results and it is easy to set up for our technicians. So it is very hard to compare, sorry. The best way is to try all possible parameters.
Best regards and good luck!
Vladimir
toggle quoted message
Show quoted text
On 8/29/2012 10:01 AM, Attila wrote:
Hi Vladimir,
Thank you very much indeed!
Well I did not find the attached txt.file. So what is the refractive index you calculated?
Well the thickness is could be real, because of the uniformity mask and the distance between the crystall and the substrate.So I can calulate the tooling now. I am very happy because my own built Ion Source works well.
Vladimir, what is your opinion about, the ion current density change. If I apply same IS power but lower Vd say 150V and higer Id say 3A. How affect this the ion current density, lower or higher or same?
Best Regards
Attila
--- In VacuumX@..., Vladimir Chutko <chutko@...> wrote:
Hi Attila,
Please see attached files. The picture shows your data and spectra I've
designed for TiO2 film with Thk = 115.8 nm, deposited on one side of
BK7 glass 3 mm thickness. Calculated TiO2 refractive index dispersion
is in attached .txt file. The curves fit very good. We suppose that
absorption is zero, however below 400 nm TiO2 absorption strongly
increases, we usually do not work with TiO2 below 400 nm. Your TiO2 has
big enough refractive index because of ion beam assistance, it is good.
What do you think about these results?
Best regards,
Vladimir
On 8/11/2012 3:47 AM, Attila wrote:
Hi Vladimir,
Here are the datas I have:
The deposition rate was 2 Angstrm/sec, I deposited 150nm of TIO2 at least the quartz monitor showed that.
That was an Ion beam assisted deposition. Substrate is about 300mm from the IS, parameters: Vd=240V Id=1,9A Iem(HF)=1,95A, O2 ions, not preheated substrate.
I have a uniformity mask over the Ebeam-gun, so it could be the deposited layer is somewhere around 100-120nm.
Thank's a lot!
BR.
Attila Schn
--- In VacuumX@..., Vladimir Chutko <chutko@> wrote:
Hi Attila,
Actually you have two unknown parameters - film thickness and refractive
index dispersion, so it is not easy to find thickness exactly just from
R or T spectra without some special software.
I'll try to help you. I have TiO2 films refractive index dispersion data
for TiO2 deposited on substrate heated up to 250C and TiO2 deposited on
cold or preheated substrate with ion beam assistance at 180 V, 5A O2
ions. I also have thin film coating software. Let me know how did you
deposit your film. It looks like your films are about 100 nm thickness.
What was the deposition time? What was the substrate temperature? Did
you use ion beam assistance and if you did, what were its parameters?
Best regards,
Vladimir Chutko
On 8/10/2012 6:42 AM, Attila wrote:
Hello,
Does anybody have the ability to calculate the TIO2 thin film layer thickness and refractive index, form spectrometer measurement datas?
I attached a folder and files to the files section.
Folder name: Thin film thickness. Where is two excel files. I did a transmittance measurement of a sample, where 150nm Thick Tio2 film was evaporated.
The substrate normal BK7 glass.
I can't compute the refractive index and the thickness from the datas because I don't know the methode, and the lack of knowledge.
I need this values for tooling factor calc.
Can anybody help me?
Thank's a lot!
Attila Schn
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
|
Re: Tooling factor calculation help
Hi Vladimir,
Thank you very much indeed!
Well I did not find the attached txt.file. So what is the refractive index you calculated?
Well the thickness is could be real, because of the uniformity mask and the distance between the crystall and the substrate.So I can calulate the tooling now. I am very happy because my own built Ion Source works well.
Vladimir, what is your opinion about, the ion current density change. If I apply same IS power but lower Vd say 150V and higer Id say 3A. How affect this the ion current density, lower or higher or same?
Best Regards
Attila
toggle quoted message
Show quoted text
--- In VacuumX@..., Vladimir Chutko <chutko@...> wrote:
Hi Attila,
Please see attached files. The picture shows your data and spectra I've
designed for TiO2 film with Thk = 115.8 nm, deposited on one side of
BK7 glass 3 mm thickness. Calculated TiO2 refractive index dispersion
is in attached .txt file. The curves fit very good. We suppose that
absorption is zero, however below 400 nm TiO2 absorption strongly
increases, we usually do not work with TiO2 below 400 nm. Your TiO2 has
big enough refractive index because of ion beam assistance, it is good.
What do you think about these results?
Best regards,
Vladimir
On 8/11/2012 3:47 AM, Attila wrote:
Hi Vladimir,
Here are the datas I have:
The deposition rate was 2 Angstr?m/sec, I deposited 150nm of TIO2 at least the quartz monitor showed that.
That was an Ion beam assisted deposition. Substrate is about 300mm from the IS, parameters: Vd=240V Id=1,9A Iem(HF)=1,95A, O2 ions, not preheated substrate.
I have a uniformity mask over the Ebeam-gun, so it could be the deposited layer is somewhere around 100-120nm.
Thank's a lot!
BR.
Attila ³§³¦³ó²Ô¨¦
--- In VacuumX@..., Vladimir Chutko <chutko@> wrote:
Hi Attila,
Actually you have two unknown parameters - film thickness and refractive
index dispersion, so it is not easy to find thickness exactly just from
R or T spectra without some special software.
I'll try to help you. I have TiO2 films refractive index dispersion data
for TiO2 deposited on substrate heated up to 250C and TiO2 deposited on
cold or preheated substrate with ion beam assistance at 180 V, 5A O2
ions. I also have thin film coating software. Let me know how did you
deposit your film. It looks like your films are about 100 nm thickness.
What was the deposition time? What was the substrate temperature? Did
you use ion beam assistance and if you did, what were its parameters?
Best regards,
Vladimir Chutko
On 8/10/2012 6:42 AM, Attila wrote:
Hello,
Does anybody have the ability to calculate the TIO2 thin film layer thickness and refractive index, form spectrometer measurement datas?
I attached a folder and files to the files section.
Folder name: Thin film thickness. Where is two excel files. I did a transmittance measurement of a sample, where 150nm Thick Tio2 film was evaporated.
The substrate normal BK7 glass.
I can't compute the refractive index and the thickness from the datas because I don't know the methode, and the lack of knowledge.
I need this values for tooling factor calc.
Can anybody help me?
Thank's a lot!
Attila ³§³¦³ó²Ô¨¦
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
|
Re: Tooling factor calculation help
Hi Attila,
Please see attached files. The picture shows your data and spectra I've designed for TiO2 film with Thk = 115.8 nm, deposited on one side of BK7 glass 3 mm thickness. Calculated TiO2 refractive index dispersion is in attached .txt file. The curves fit very good. We suppose that absorption is zero, however below 400 nm TiO2 absorption strongly increases, we usually do not work with TiO2 below 400 nm. Your TiO2 has big enough refractive index because of ion beam assistance, it is good.
What do you think about these results?
Best regards,
Vladimir
toggle quoted message
Show quoted text
On 8/11/2012 3:47 AM, Attila wrote:
Hi Vladimir,
Here are the datas I have:
The deposition rate was 2 Angstrm/sec, I deposited 150nm of TIO2 at least the quartz monitor showed that.
That was an Ion beam assisted deposition. Substrate is about 300mm from the IS, parameters: Vd=240V Id=1,9A Iem(HF)=1,95A, O2 ions, not preheated substrate.
I have a uniformity mask over the Ebeam-gun, so it could be the deposited layer is somewhere around 100-120nm.
Thank's a lot!
BR.
Attila Schn
--- In VacuumX@..., Vladimir Chutko <chutko@...> wrote:
Hi Attila,
Actually you have two unknown parameters - film thickness and refractive
index dispersion, so it is not easy to find thickness exactly just from
R or T spectra without some special software.
I'll try to help you. I have TiO2 films refractive index dispersion data
for TiO2 deposited on substrate heated up to 250C and TiO2 deposited on
cold or preheated substrate with ion beam assistance at 180 V, 5A O2
ions. I also have thin film coating software. Let me know how did you
deposit your film. It looks like your films are about 100 nm thickness.
What was the deposition time? What was the substrate temperature? Did
you use ion beam assistance and if you did, what were its parameters?
Best regards,
Vladimir Chutko
On 8/10/2012 6:42 AM, Attila wrote:
Hello,
Does anybody have the ability to calculate the TIO2 thin film layer thickness and refractive index, form spectrometer measurement datas?
I attached a folder and files to the files section.
Folder name: Thin film thickness. Where is two excel files. I did a transmittance measurement of a sample, where 150nm Thick Tio2 film was evaporated.
The substrate normal BK7 glass.
I can't compute the refractive index and the thickness from the datas because I don't know the methode, and the lack of knowledge.
I need this values for tooling factor calc.
Can anybody help me?
Thank's a lot!
Attila Schn
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
|
Re: Chamber wall thickness
--- In VacuumX@..., Paul Anderson <wackyvorlon@...> wrote:
A 22"x22"x22" cube with 1/2" thick walls will be pretty heavy. I figure it at about 400 pounds. Do you have a hoist to move it around?
Thanks all for the reply. It was the "box" that James Lerch made that got me thinking on the square part plus it was home made.The 400 pounds does present a challenge,but was thinking of a side door appraoach that James also used.Had read about stiffening thinner side walls with extra weldments,so this idea might fly in the future just have to see.. Ric
|
Re: Chamber wall thickness
Dear James Nice vacuum box for coatings. Can let me know about the plasma cleaning. I have got the round vacuum chamber bought from the trash store. I? do not have the plasma cleaning systen in it. Can u guide me how to design this plasma cleaning (power supplies, electrode materials etc.) What was your DC power rating for heating the tungsten wire ? Waiting for your kind reply zafar
To: VacuumX@... From: eosraptor@... Date: Wed, 15 Aug 2012 13:28:30 -0400 Subject: Re: [VacuumX] Re: Chamber wall thickness
?
That is James Lerch's box.? It is really sweet actually.? It is very stout so no need for support webbing.?
James you out there still ???? You doing mirrors or just playing with the helo's ???
Drew in soggy Florida
---------------------------------------------------------------------------------------
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On Wed, Aug 15, 2012 at 11:14 AM, Charles Mitchard <charlesmitchard@...> wrote:
?
heres a square chamber by James Lerch
|
Re: Chamber wall thickness
A 22"x22"x22" cube with 1/2" thick walls will be pretty heavy. I figure it at about 400 pounds. Do you have a hoist to move it around?
--------
Paul Anderson -- VE3HOP
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Show quoted text
On 2012-08-14, at 9:19 AM, "radicell2" <radicell2@...> wrote: Was wondering what an acceptable thickness - in steel- would be for a square welded chamber 22 inches in diameter? !/2 inch steel sound OK??
This is to coat mirrors with.
Read the archives about a formula but people didn't seem to agree on it.
Ric
------------------------------------
Yahoo! Groups Links
|
Re: Chamber wall thickness
That is James Lerch's box.? It is really sweet actually.? It is very stout so no need for support webbing.?
James you out there still ???? You doing mirrors or just playing with the helo's ???
Drew in soggy Florida
---------------------------------------------------------------------------------------
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Show quoted text
On Wed, Aug 15, 2012 at 11:14 AM, Charles Mitchard <charlesmitchard@...> wrote:
?
heres a square chamber by James Lerch
|
Re: Chamber wall thickness
Hoop stress varies dramatically with diameter, so
your thickness will depend in large part on the size
of your chamber.
This page may be informative:
Why on earth are people building chambers with flat walls?
The wall thickness has to be ENORMOUS by comparison.
Scrap gas tanks of various sizes are cheap and much lighter...
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Show quoted text
On Aug 14, 2012, at 7:19 AM, radicell2 wrote: Was wondering what an acceptable thickness - in steel- would be for a square welded chamber 22 inches in diameter? !/2 inch steel sound OK??
This is to coat mirrors with.
Read the archives about a formula but people didn't seem to agree on it.
Ric
------------------------------------
Yahoo! Groups Links
|
Re: Chamber wall thickness
heres a square chamber by James Lerch
|
Re: Chamber wall thickness
You can go thinner if you stitch weld some vertical supports across the flats.? say 1/4" wall with 1/4" thk x 1" wide support ribs perpendicular to he flat surfaces.? You are just trying to resist the inward bow of the flat plate.? The pic below is of a boat but you can see how the stringers are vertical to the surface to add support.? I suppose you could use "L" channel flipped over like this on your flat surfaces.? It would be a faster way to buidl in support than sheared plate strips.
1/2" steel is not trivial to cut and weld to shape but you may need that ( or thicker ) for the door to keep it from warping and failing the seal.? Also the end where the door will interface to the chamber has to have a serious seal landing area.?
Is there nothing out on EBAY that is close enough to buy and adapt ??? Drew in soggy Florida ------------------------------------------------ ??
On Wed, Aug 15, 2012 at 1:16 AM, Vladimir Chutko <chutko@...> wrote:
?
Square chamber with diameter????? Well, anyway, if it is cylindrical
chamber 1/2" SS should be OK. If it is square/cube chamber, 1/2" also
should be OK but I would make stiffening plates on plane surfases (the
same on the cylindrical chamber top and bottom).
Best regards,
Vladimir
On 8/14/2012 6:19 AM, radicell2 wrote:
> Was wondering what an acceptable thickness - in steel- would be for a square welded chamber 22 inches in diameter? !/2 inch steel sound OK??
> This is to coat mirrors with.
>
> Read the archives about a formula but people didn't seem to agree on it.
>
> Ric
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
|
Re: Chamber wall thickness
Square chamber with diameter????? Well, anyway, if it is cylindrical chamber 1/2" SS should be OK. If it is square/cube chamber, 1/2" also should be OK but I would make stiffening plates on plane surfases (the same on the cylindrical chamber top and bottom).
Best regards,
Vladimir
toggle quoted message
Show quoted text
On 8/14/2012 6:19 AM, radicell2 wrote: Was wondering what an acceptable thickness - in steel- would be for a square welded chamber 22 inches in diameter? !/2 inch steel sound OK??
This is to coat mirrors with.
Read the archives about a formula but people didn't seem to agree on it.
Ric
------------------------------------
Yahoo! Groups Links
|
Was wondering what an acceptable thickness - in steel- would be for a square welded chamber 22 inches in diameter? !/2 inch steel sound OK??
This is to coat mirrors with.
Read the archives about a formula but people didn't seem to agree on it.
Ric
|
Re: Tooling factor calculation help
Hi Vladimir,
Here are the datas I have:
The deposition rate was 2 Angstr?m/sec, I deposited 150nm of TIO2 at least the quartz monitor showed that.
That was an Ion beam assisted deposition. Substrate is about 300mm from the IS, parameters: Vd=240V Id=1,9A Iem(HF)=1,95A, O2 ions, not preheated substrate.
I have a uniformity mask over the Ebeam-gun, so it could be the deposited layer is somewhere around 100-120nm.
Thank's a lot!
BR.
Attila ³§³¦³ó²Ô¨¦
toggle quoted message
Show quoted text
--- In VacuumX@..., Vladimir Chutko <chutko@...> wrote:
Hi Attila,
Actually you have two unknown parameters - film thickness and refractive
index dispersion, so it is not easy to find thickness exactly just from
R or T spectra without some special software.
I'll try to help you. I have TiO2 films refractive index dispersion data
for TiO2 deposited on substrate heated up to 250C and TiO2 deposited on
cold or preheated substrate with ion beam assistance at 180 V, 5A O2
ions. I also have thin film coating software. Let me know how did you
deposit your film. It looks like your films are about 100 nm thickness.
What was the deposition time? What was the substrate temperature? Did
you use ion beam assistance and if you did, what were its parameters?
Best regards,
Vladimir Chutko
On 8/10/2012 6:42 AM, Attila wrote:
Hello,
Does anybody have the ability to calculate the TIO2 thin film layer thickness and refractive index, form spectrometer measurement datas?
I attached a folder and files to the files section.
Folder name: Thin film thickness. Where is two excel files. I did a transmittance measurement of a sample, where 150nm Thick Tio2 film was evaporated.
The substrate normal BK7 glass.
I can't compute the refractive index and the thickness from the datas because I don't know the methode, and the lack of knowledge.
I need this values for tooling factor calc.
Can anybody help me?
Thank's a lot!
Attila ³§³¦³ó²Ô¨¦
------------------------------------
Yahoo! Groups Links
|
Re: Tooling factor calculation help
Hi Attila,
Actually you have two unknown parameters - film thickness and refractive index dispersion, so it is not easy to find thickness exactly just from R or T spectra without some special software.
I'll try to help you. I have TiO2 films refractive index dispersion data for TiO2 deposited on substrate heated up to 250C and TiO2 deposited on cold or preheated substrate with ion beam assistance at 180 V, 5A O2 ions. I also have thin film coating software. Let me know how did you deposit your film. It looks like your films are about 100 nm thickness. What was the deposition time? What was the substrate temperature? Did you use ion beam assistance and if you did, what were its parameters?
Best regards,
Vladimir Chutko
toggle quoted message
Show quoted text
On 8/10/2012 6:42 AM, Attila wrote: Hello,
Does anybody have the ability to calculate the TIO2 thin film layer thickness and refractive index, form spectrometer measurement datas?
I attached a folder and files to the files section.
Folder name: Thin film thickness. Where is two excel files. I did a transmittance measurement of a sample, where 150nm Thick Tio2 film was evaporated.
The substrate normal BK7 glass.
I can't compute the refractive index and the thickness from the datas because I don't know the methode, and the lack of knowledge.
I need this values for tooling factor calc.
Can anybody help me?
Thank's a lot!
Attila Schn
------------------------------------
Yahoo! Groups Links
|
Tooling factor calculation help
Hello,
Does anybody have the ability to calculate the TIO2 thin film layer thickness and refractive index, form spectrometer measurement datas?
I attached a folder and files to the files section.
Folder name: Thin film thickness. Where is two excel files. I did a transmittance measurement of a sample, where 150nm Thick Tio2 film was evaporated.
The substrate normal BK7 glass.
I can't compute the refractive index and the thickness from the datas because I don't know the methode, and the lack of knowledge.
I need this values for tooling factor calc.
Can anybody help me?
Thank's a lot!
Attila ³§³¦³ó²Ô¨¦
|
Re: Double sided tape in vacuum
Hi!
Thank's for the answers. Well I am going to try the tape. I hope the mirrors won't fly away!
BR.
Attila
³§³¦³ó²Ô¨¦
toggle quoted message
Show quoted text
--- In VacuumX@..., Vladimir Chutko <chutko@...> wrote:
Hi Attila,
We always use double sided Kapton tape to hold small parts if there are
some troubles with rails or to protect pre-coated sides if necessary. It
works fine in vacuum at heater temperature 250C.
Best regards,
Vladimir Chutko
On 7/19/2012 10:59 AM, Attila wrote:
Hello!
I need to recoat two small mirror. One of them is 15mm diam and maybe 20gramm, the other is 24mmx36mm also very light. I have no idea how can I put the face down to the planetary holder.
I thought maybe I use tesafix® 62855 double sided tape. Which can hold the mirror.
Anybody tried such a way to hold mirror in the chamber?
BR
Attila
³§³¦³ó²Ô¨¦
------------------------------------
Yahoo! Groups Links
|
Re: Double sided tape in vacuum
Hi Attila,
We always use double sided Kapton tape to hold small parts if there are some troubles with rails or to protect pre-coated sides if necessary. It works fine in vacuum at heater temperature 250C.
Best regards,
Vladimir Chutko
toggle quoted message
Show quoted text
On 7/19/2012 10:59 AM, Attila wrote: Hello!
I need to recoat two small mirror. One of them is 15mm diam and maybe 20gramm, the other is 24mmx36mm also very light. I have no idea how can I put the face down to the planetary holder.
I thought maybe I use tesafix® 62855 double sided tape. Which can hold the mirror.
Anybody tried such a way to hold mirror in the chamber?
BR
Attila
Schn
------------------------------------
Yahoo! Groups Links
|
Re: Double sided tape in vacuum
I would use two parallel bars of steel or aluminum that you connect with long bots nuts and washers. The mirrors go between them, sideways of course.
Guy
?
Hello!
I need to recoat two small mirror. One of them is 15mm diam and maybe 20gramm, the other is 24mmx36mm also very light. I have no idea how can I put the face down to the planetary holder.
I thought maybe I use tesafix® 62855 double sided tape. Which can hold the mirror.
Anybody tried such a way to hold mirror in the chamber?
BR
Attila
³§³¦³ó²Ô¨¦
=
|
