.beta.'-Sialon sintered body and a method for manufacturing the

Details .beta.'-Sialon sintered body and a method for manufacturing the .beta.'-Sialon sintered body and a method for manufacturing the

1978-02-16

1981-01-06

Parrish, John A.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

106 734, 106 735, 264 66, 264 67, C04B 3544

Patent

active

042436214

ABSTRACT:
This invention provides a method for manufacturing said sintered body, comprising preparing a starting material by adding 10 to 1,000 wt. parts of metal silicon powder to 100 wt. parts of mixed powder composed of 20 to 80 wt. % silica powder and 80 to 20 wt. % aluminium powder and mixing said powders thoroughly, further adding, if required, a refractory fine powder of alumina, silicon nitride, aluminium nitride, .beta.'-sialon, aluminium nitride polytype sialon, or silicon carbide, molding the resultant mixture into a green compact, and then sintering said green compact in a nitrogeneous nonoxidative gas atmosphere at a temperature of 1,200.degree. to 1,550.degree. C. This invention further provides a compact sintered body which will be prepared by the above mentioned method.

REFERENCES:
patent: 3991166 (1976-11-01), Jack et al.
patent: 4113503 (1978-09-01), Lumby et al.

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