Method of protecting ceramic bodies against mechanical and thermal action
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United States of America Patent
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May 9, 1989
Grant Date -
N/A
app pub date -
Dec 12, 1986
filing date -
Dec 12, 1986
priority date (Note) -
Expired
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Abstract
Ceramic substrates, e.g. of silicon carbide or silicon nitride are protected against mechanical surface wear at high temperatures by an arc coating with a refractory metal followed by coating with another metal and then with a wear-reducing high density layer, e.g. of a metal oxide, nitride or carbide.
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