Process for preparing a polycrystalline diamond body/silicon car

Details Process for preparing a polycrystalline diamond body/silicon car Process for preparing a polycrystalline diamond body/silicon car

1978-04-17

1979-10-16

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

51309, 51308, C04B 3556, C04B 3558, B24D 306

Patent

active

041713397

ABSTRACT:
A mass of diamond crystals in contact with a mass of eutectiferous silicon-rich alloy and a silicon carbide ceramic substrate are disposed in a container and placed within a pressure transmitting powder medium. Pressure is applied to the powder medium resulting in substantially isostatic pressure being applied to the container and its contents sufficient to dimensionally stabilize the container and its contents. The resulting shaped substantially isostatic system of powder-enveloped container is hot-pressed whereby fluid eutectiferous silicon-rich alloy is produced and infiltrated through the interstices between the diamond crystals and contacts the contacting face of the silicon carbide substrate sufficiently producing, upon cooling, an adherently bonded integral composite.

REFERENCES:
patent: 3617347 (1971-11-01), Kuratomi
patent: 3850591 (1974-11-01), Wentorf, Jr.
patent: 3852078 (1974-12-01), Wakatsuki et al.
patent: 3913280 (1975-10-01), Hall
patent: 3982911 (1976-09-01), Lee
patent: 4110084 (1978-08-01), Lee et al.
patent: 4124401 (1978-11-01), Lee et al.
patent: 4124690 (1978-11-01), Strong et al.

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