Process for forming tin-zirconia ceramics

Details Process for forming tin-zirconia ceramics Process for forming tin-zirconia ceramics

1991-07-05

1992-12-08

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501103, C04B 3558

Patent

active

051698102

ABSTRACT:
A process for forming ceramics comprises mixing titanium nitride with an average particle size less than 0.2 micron, zirconia having a particle size less than 1 micron and a stabilizing agent for stabilizing the zirconia in the tetragonal or cubic phase forming the mixture into a desired shape and firing at between 1300.degree. and 1700.degree. C.
Preferably the stabilizing agent is in the form of coating on the zirconia.
The process is suitable for forming hard and tough ceramics which are electroconducting and can be shaped by electro-discharge machining. It is particularly suitable for forming ceramics containing between 70 and 90% by weight titanium nitride.

REFERENCES:
patent: 4626517 (1986-12-01), Watanabe et al.
patent: 4748138 (1988-05-01), Watanabe et al.

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