Hot pressing of reaction sintered CaB.sub.6

Details Hot pressing of reaction sintered CaB.sub.6 Hot pressing of reaction sintered CaB.sub.6

1974-02-15

1977-04-12

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

75226, 106 63, 264 65, 264332, C04B 3558

Patent

active

040175774

ABSTRACT:
A method for the production of high density compacts of calcium hexaboride omprising the gradual heating of stoichiometric quantities of calcium oxide and boron powder to a temperature of approximately 1500.degree. C and maintaining that temperature for a period of about 30 minutes to produce calcium hexaboride, applying a pressure of about 5500 psi, and maintaining both temperatures and pressures for about 90 minutes.

REFERENCES:
patent: 3379647 (1968-04-01), Smudski
patent: 3702881 (1972-11-01), DasChaklader
Schwarzkopf et al., Refractory Hard Metals, pp. 272-273 (1953).
High Temperature Technology, Ed. by Campbell, pp. 131-150 (1956).

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