Process for shaping a material by hot isostatic pressing and tit

Details Process for shaping a material by hot isostatic pressing and tit Process for shaping a material by hot isostatic pressing and tit

1988-08-05

1991-01-08

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

264317, 264332, 419 10, 419 49, 419 68, C04B 3564

Patent

active

049833391

ABSTRACT:
The invention relates to a process for shaping a material by isostatic compression at a temperature of at least 1300.degree. C. of a powder of said material in a tight sheath.
The sheath is made from titanium or a titanium alloy and is internally coated with tantalum in such a way that the sheath can be embrittled during hot isostatic compression, by the diffusion of tantalum into the titanium or titanium alloy, in the presence of oxygen. In general, the titanium sheath is coated with tantalum by spraying in the presence of oxygen.
The use of such a sheath makes it possible to avoid the operation of eliminating the sheath chemically or mechanically conventionally necessary in such processes.

REFERENCES:
patent: 3340053 (1967-09-01), Hodge et al.
patent: 3466734 (1969-09-01), Vordahl
patent: 3627521 (1971-12-01), Vordahl
patent: 4007251 (1977-02-01), Isaksson et al.
patent: 4560668 (1985-12-01), Harold et al.

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