Process for the improvement of the corrosion resistance of metallic materials
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United States of America Patent
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Nov 5, 1991
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N/A
app pub date -
Dec 14, 1989
filing date -
Apr 18, 1988
priority date (Note) -
Expired
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Abstract
A subject of the invention is a process for improving the corrosion resistance of a metallic material, characterized in that the metallic material is subjected cold to a surface treatment by a low-temperature plasma, at a pressure of 1 to 10.sup.3 Pa in an atmosphere comprising at least one gas chosen from the following; oxygen, ozone, nitrogen, hydrogen, air, carbon dioxide, carbon monoxide, the oxides of nitrogen, water, combustion gases and mixtures of these with a neutral gas.
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