Polycrystalline diamond body and process

Details Polycrystalline diamond body and process Polycrystalline diamond body and process

1979-05-24

1980-11-04

Arnold, Donald J.

Abrasive tool making process, material, or composition

With inorganic material

51308, B24D 302

Patent

active

042311950

ABSTRACT:
An adherently bonded polycrystalline diamond body is produced by forming a charge composed of a mass of diamond crystals in contact with a mass of eutectiferous silicon-rich alloy wherein the alloy is in contact or in association with hexagonal boron nitride, confining such charge within a reaction chamber, subjecting the confined charge to a pressure of at least 25 kilobars, heating the pressure-maintained charge to a temperature sufficient to melt the alloy and at which no significant graphitization of the diamond occurs whereby the alloy infiltrates through the interstices between the diamond crystals producing said body.

REFERENCES:
patent: 4124401 (1978-11-01), Lee et al.
patent: 4151686 (1979-05-01), Lee et al.
patent: 4168957 (1979-09-01), Lee et al.

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