Surface-treated metallic part and processing method thereof

Details Surface-treated metallic part and processing method thereof Surface-treated metallic part and processing method thereof

1997-07-15

1999-11-09

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

148537, 148669, 427190, 427191, B05D 112

Patent

active

059806591

ABSTRACT:
Surface-treating metallic parts are produced by applying mechanical energy to the surface of a metallic part and to a substance on or near the surface of the metallic part. The substance is different from the metallic part in composition. The applying step forms a mechanically-alloyed layer from the metallic part and the substance in the surface of the metallic part. The surface-modified layer such as the mechanically-alloyed layer is a non-peeling alloyed layer having a composition or structure different from that of the metallic part. The method is effective in surface-treating light metal materials of which the surfaces are difficult to treat. For example, the method is applicable to soft Mg alloys and Al alloys to improve their surface hardness, and the thus-treated alloys are usable in slide parts which are required to have good wear resistance. It is also applicable to the improvement in the oxidation resistance of Ti alloy parts which are used at high temperatures, and to the improvement in the corrosion resistance of Mg alloys which are said to have poor corrosion resistance.

REFERENCES:
patent: 4178193 (1979-12-01), Kanter
patent: 4902359 (1990-02-01), Takeuchi et al.
patent: 5413642 (1995-05-01), Alger

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