Surface treatment of metals and alloys

Details Surface treatment of metals and alloys Surface treatment of metals and alloys

C - Chemistry, Metallurgy

23

C

204/96.36

C23C 8/24 (2006.01) C23C 8/36 (2006.01) C23C 8/80 (2006.01)

Patent

CA 2000320

- 12 - ABSTRACT Title: Surface Treatment of Metals and Alloys The invention provides a method of treating a component made of metal or alloy, in which the component is bombarded with nitrogen ions in a vacuum system at a temperature below that conventionally used for plasma nitriding. The nitrogen ion bombardment is preferably carried out at a temperature below 850°C and for a period of time in the range of 1-2 hours. This method allows surface treatment of a component to be carried out relatively quickly. The invention also provides a method of treating a component made of metal or alloy, in which the surface of the component is cleaned by ion bombardment; the cleaned component is bombarded with nitrogen ions in a vacuum system at a temperature below that conventionally used for plasma nitriding; and a surface coating is then formed on the component. A component is thus produced which has improved properties compared with those obtained hitherto, for example, good adhesion, wear and surface finish properties.

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