Doped alpha-beta sialon ceramics

Details Doped alpha-beta sialon ceramics Doped alpha-beta sialon ceramics

2006-06-20

2006-06-20

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Refractory

C501S098300

Reexamination Certificate

active

07064095

ABSTRACT:
This invention is about SiALON ceramics comprising an alpha SiAlON, a beta SiAlON and an intergranular amorphous and/or crystalline phase. Said alpha SiALON phase was prepared from a multi-cationic mixture including the element of calcium, at least one of yttrium and/or a rare earth element with atomic number greater than 62 and at least one of a rare earth element with atomic number equal or smaller than 62. The second phase, beta SiALON contains elements of Si, Al, O, N. The third phase, amorphous and/or crystalline intergranular phase contains in addition to elements of Si, AL, O, N, element of calcium, at least one of yttrium and/or a rare earth element with atomic number greater than 62 and at least one of a rare earth element with atomic number equal or smaller than 62. This material with its toughness, high fracture resistance and high temperature resistance is useful for cutting tool applications and components in machinery and engines.

REFERENCES:
patent: 5173458 (1992-12-01), Nishioka et al.
patent: 5227346 (1993-07-01), Hwang et al.
patent: 5413972 (1995-05-01), Hwang et al.
patent: 6693054 (2004-02-01), Yeckley
patent: 6824727 (2004-11-01), Roy et al.
patent: 2004/0102305 (2004-05-01), Yeckley
patent: 2005/0020432 (2005-01-01), Roy et al.

Affiliated with

Also associated with

Rating

Doped alpha-beta sialon ceramics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Doped alpha-beta sialon ceramics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doped alpha-beta sialon ceramics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3672078