Surface hardening of titanium alloys with melting depth controll

Details Surface hardening of titanium alloys with melting depth controll Surface hardening of titanium alloys with melting depth controll

1995-01-31

1995-10-03

Utech, Benjamin

Coating processes

Spray coating utilizing flame or plasma heat

Inorganic carbon containing coating, not as steel

427508, 427540, 427559, 427569, 427250, 427318, 205224, 205228, 228222, 228 50, 148522, C23C 1600

Patent

active

054550793

ABSTRACT:
A process for forming a hard surface coating on titanium alloys includes providing a piece of material containing titanium having at least a portion of one surface to be hardened. The piece having a portion of a surface to be hardened is contacted on the backside by a suitable heat sink such that the melting depth of said surface to be hardened may be controlled. A hardening material is then deposited as a slurry. Alternate methods of deposition include flame, arc, or plasma spraying, electrodeposition, vapor deposition, or any other deposition method known by those skilled in the art. The surface to be hardened is then selectively melted to the desired depth, dependent on the desired coating thickness, such that a molten pool is formed of the piece surface and the deposited hardening material. Upon cooling a hardened surface is formed.

REFERENCES:
patent: 3765954 (1973-10-01), Tokuda et al.
patent: 4157923 (1979-06-01), Yen et al.
patent: 4212900 (1980-07-01), Serlin
patent: 4372989 (1980-06-01), Menzel
patent: 4946749 (1990-08-01), Restoll et al.
patent: 5126213 (1992-06-01), Restoll et al.

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