Metal treatment – Process of modifying or maintaining internal physical... – Treating loose metal powder – particle or flake
Patent
1997-11-28
2000-08-08
Wyszomierski, George
Metal treatment
Process of modifying or maintaining internal physical...
Treating loose metal powder, particle or flake
148515, 164 97, 419 12, B22F 323
Patent
active
060996641
ABSTRACT:
The invention provides a method of making a titanium boride metal matrix alloy, by firing a particulate reaction mixture comprising titanium, matrix material and a source of boron (e.g. boron carbide), under conditions such that the titanium and boron react exothermically to form a dispersion of fine particles (preferably greater than 1 micron and less than 10 microns in size) comprising titanium boride (plus titanium carbide where the source of boron is boron carbide) in a predominantly metal matrix. The titanium and matrix are preferably added as a titanium alloy such as ferrotitanium (e.g. eutectic ferrotitanium) or titanium-aluminium. The reaction conditions are preferably selected so that during the reaction a molten zone moves through the body of the reaction mixture, and the average size of the resulting hard particles is uniform throughout the resulting dispersion.
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Davies Peter
Kellie James Leslie Frederick
Mc Kay Richard Nigel
Wood John Vivian
Huang Eric H.
Ingerman Jeffrey H.
London & Scandinavian Metallurgical Co., Ltd.
Wyszomierski George
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