Diamond-based ultra-high-pressure-sintered material having excel

Details Diamond-based ultra-high-pressure-sintered material having excel Diamond-based ultra-high-pressure-sintered material having excel

1994-12-22

1997-04-29

Turner, Archene

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

428701, 428702, 428408, 51307, 156 89, 407119, 264 43, B23P 1528, C04B 3552

Patent

active

056247567

ABSTRACT:
A cutting tool blank formed of material having a composition comprising of 0.1 to 20 wt % of BaCO.sub.3 and/or MgCO.sub.3, and/or 0.05 to 10 wt % of CaMg(CO.sub.3).sub.2 or CaCO3, the balance being preferably substantially diamond forming a matrix is heated and maintained at a temperature of 800.degree. to 1400.degree. C. in a vacuum to change, by chemical reaction, the above BaCO.sub.3 and/or MgCO.sub.3, and/or CaMg(CO.sub.3).sub.2 or CaCO.sub.3 into 0.05 to 13% of BaO and/or MgO and/or 0.02 to 5% of CaO, and to form pores. In this manner, a cutting tool formed of a diamond-based ultra-high-temperature-sintered material having a structure in which BaO, MgO and/or CaO are distributed finely and uniformly in a diamond matrix is obtained.

REFERENCES:
patent: 3894850 (1975-07-01), Kovalchuk et al.
patent: 5270114 (1993-12-01), Herb et al.

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