First sputter deposition efforts
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I believe I have eroded aluminum with plasma.? The once shiny aluminum foil is now dull and pitted and missing in some places after 2 minutes of purple plasma. ? A bud tore apart a microwave oven and rigged me up a high voltage DC supply fed by a variac.? With about 40 vac input to the microwave oven transformer, the output is about 450 vdc.? The little roughing pump is pulling down to about 5 torr and the electrodes are about 10mm apart. ?
The magnetron I ginned up is just the circular magnet from the transformer with a little N35 ( super magnet ) held at its center with an aluminum plug.? I covered the magnets with aluminum foil and put the whole assembly on a plastic stand in the little degassing chamber.? The magnet gets hot quick so test runs are less than 3 minutes. ?
This is a long way from making telescope mirrors reflective but it is a start. ?
Drew in sunny Florida
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