Preparation of very strong pore-free ceramic silicon carbide mol

Details Preparation of very strong pore-free ceramic silicon carbide mol Preparation of very strong pore-free ceramic silicon carbide mol

1988-02-26

1989-06-13

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 65, 264332, 501 88, C04B 3556

Patent

active

048391190

ABSTRACT:
Compact pore-free silicon carbide moldings are produced by compressing amorphous silicon carbide powder in the absence of sintering assistants at from 1400.degree. to 1800.degree. C. and under from 100 to 2000 kp/cm .sup.2 to give dense, glassy moldings. In a subsequent stage the resulting glassy moldings are converted into crystalline .alpha.-silicon carbide at from 1950.degree. to 2200.degree. C.

REFERENCES:
patent: 4372902 (1983-02-01), Denton et al.
patent: 4571331 (1986-02-01), Endou
patent: 4734234 (1988-03-01), Sterzel
Technische Akademie Esslingen, Weiderbildungs zentrum, Mar. 1985, Course 7578/67.017, H. Knoch, Herstellung und Eigenschaften verschiedener Siliciumcarbidwerk stoffe.
J. Am. Ceram. Soc. 69 (4), pp. 67-68.
Haggerty, John S.; Cannon, W. Roger; Laser-Induced Chem. Processes, 1981, 165-241; Ed. by Steinfeld, Jeffrey J.; Plenum, New York .
Better Ceramics Through Chemistry II, Materials Research Society, Symposia Proceedings, vol. 73, 1986, p. 369.

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