Nitride based cutting tool and method for producing the same

Details Nitride based cutting tool and method for producing the same Nitride based cutting tool and method for producing the same

1984-01-10

1986-03-25

Dixon, Jr., William R.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51308, 51309, 407119, 501 97, 428698, B24D 302

Patent

active

045780870

ABSTRACT:
A nitride based ceramic cutting tool is described comprising from 50 to 90% by weight Si.sub.2 N.sub.4, from 5 to 45% by weight TiN, and from 5 to 45% by weight sintering aid, said sintering aid comprising (1) at least one of Y.sub.2 O.sub.3 and Dy.sub.2 O.sub.3 and (2) Al.sub.2 O.sub.3 alone or a mixture of AlN and Al.sub.2 O.sub.3, said mixture comprising from 5 to 65% by weight AlN, and the weight ratio of (1) at least one of Y.sub.2 O.sub.3 and Dy.sub.2 O.sub.3 to (2) Al.sub.2 O.sub.3 alone or the AlN and Al.sub.2 O.sub.3 mixture being 3:1 to 1:3.

REFERENCES:
patent: 3955038 (1976-05-01), Lindstrom et al.
patent: 4216021 (1980-08-01), Hattori et al.
patent: 4421525 (1983-12-01), Sarin et al.
patent: 4440707 (1984-04-01), Shimamori et al.
patent: 4442169 (1984-04-01), Graham
patent: 4449989 (1984-05-01), Sarin et al.

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