Process for producing a rotary anode and the anode produced by such process
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United States of America Patent
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Issued Date -
Apr 3, 2008
app pub date -
Oct 3, 2006
filing date -
Oct 3, 2006
priority date (Note) -
Abandoned
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Abstract
The present invention is directed to an improved process for manufacturing a rotary anode for an x-ray tube, said rotary anode comprising a molybdenum support member on which a target layer consisting essentially of tungsten or a tungsten-rhenium alloy is provided by plasma spraying, the improvement comprising: a) preheating the support member to a temperature of from 1150.degree. C. to 1600.degree. C., b) placing the support member in a gaseous atmosphere containing hydrogen and having a pressure of from 0.5 to 0.9 bars and wherein hydrogen is present in a molar ratio of hydrogen to tungsten dioxide of from 5:1 to 50:1, and c) plasma spraying the target layer onto the support layer in said gaseous atmosphere.The invention is also directed to the anode produced by the process.
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