Method of producing silicon carbide base sintered material conta

Details Method of producing silicon carbide base sintered material conta Method of producing silicon carbide base sintered material conta

1986-01-17

1987-05-05

Lechert, Jr., Stephen J.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264125, 264126, 501 88, 423345, F27B 904

Patent

active

046631054

ABSTRACT:
In producing a SiC base sintered material containing a small amount of B as a sintering assistant, a boron-containing organic compound obtained by reaction between a boron compound and an uncross-linked phenolic resin, either a resol or a novolac, is used instead of using an elemental boron powder. The starting boron compound is, e.g., H.sub.3 BO.sub.3, BCl.sub.3 or (C.sub.2 H.sub.5).sub.2 BOH. A mixture comprising 100 parts by weight of SiC powder and 2-10 parts by weight of the boron-containing organic compound is compacted or molded into a desired shape, and the shaped material is heated in a nonoxidizing atmosphere first at a relatively low temperature to accomplish thermal decomposition of the boron-containing compound and then at a sufficiently high temperature such as 1800.degree.-2200.degree. C. to accomplish sintering of SiC. By this method agglomeration of boron in the sintered material is prevented, so that sound sintering is achieved in every region of the shaped material. Accordingly the products of this method are high in reliability as to mechanical strength.

REFERENCES:
patent: 3487045 (1969-12-01), Shepard et al.
patent: 4108929 (1978-08-01), Prochazka et al.
patent: 4124667 (1978-11-01), Coppola et al.
patent: 4224073 (1980-09-01), Sasaki et al.
patent: 4502983 (1985-03-01), Omori et al.
patent: 4569921 (1986-02-01), Omori et al.
"Chemical Abstracts", vol. 97, 1982, p. 310.

Affiliated with

Also associated with

Rating

Method of producing silicon carbide base sintered material conta does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing silicon carbide base sintered material conta, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing silicon carbide base sintered material conta will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2398318