Process for producing Ti/TiC composite by hydrocarbon gas and Ti

Details Process for producing Ti/TiC composite by hydrocarbon gas and Ti Process for producing Ti/TiC composite by hydrocarbon gas and Ti

1996-05-09

1998-02-24

Jordan, Charles T.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Sintering which includes a chemical reaction

419 38, 419 48, 419 49, 419 50, 419 51, 419 54, 419 60, B22F 312

Patent

active

057220379

ABSTRACT:
There is provided a process for producing titanium composite, comprising the steps of: molding titanium powder, titanium alloy powder, or powder comprising titanium into a certain shape by a cold isostatic press or cold press; reacting the shape with hydrocarbon gas at its decomposition temperature or higher, to form TiC therein; and providing the shape with high density by vacuum sintering, hot isostatic pressing, hot forging, hot rolling and/or the combinations thereof. TiC a reinforcing material, is in-situ formed by reacting a cold-pressed body of the powder with hydrocarbon gas and cleaner than the externally added one and distributed more uniformly and finely in the Ti matrix, leading to a significant improvement in wear resistance and high temperature property.

REFERENCES:
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C.S. Montross, "Relationships of Tetragonal Precipitate Statistics with Bulk Properties in Magnesia-Partially Stabilized Zirconia", 11 Journal of the European Ceramic Society 471-480 (1993).
J. Matsushita et al. "Sinterability and Fracture Toughness of TiB.sub.2 -ZRO.sub.2 Composites by Pressureless Sintering", 37 Journal of Powder and Powder Metallurgy 69-73 (1990).
S. Khatri et al. "Formation of TiC in in situ processed composites via solid-gas, solid-liquid and liquid-gas reaction in molten Al-Ti", A162 Materials Science and Engineering 153-162 (1993).
D. Hu et al., "Coarsening of TiC particles in a rapidly solidified Ti6A14V-TiC composite", 209 Journal of Alloys and Compouds 167-173 (1994).

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