Closed-cell ceramic foam material

Details Closed-cell ceramic foam material Closed-cell ceramic foam material

1973-11-19

1977-04-05

Welcome, Joan E.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

106 40V, 106 52, 106DIG1, 264 66, 264125, C04B 3332, C04B 3564, C04B 3581

Patent

active

040162290

ABSTRACT:
Cenospheres have been formed into a closed-cell ceramic foam by the application of heat. The closed-cell ceramic foam has excellent insulating properties, is readily machinable, and has cohesive structure which makes it useful for high-temperature insulating applications such as heat shields to protect space vehicles when they re-enter the earth's atmosphere.

REFERENCES:
patent: 2890126 (1959-06-01), Ford
patent: 3425577 (1969-02-01), Copley et al.
patent: 3458332 (1969-07-01), Alford et al.
patent: 3459630 (1969-08-01), D'Eustachio et al.
patent: 3486872 (1969-12-01), Wojcik et al.
patent: 3782985 (1974-01-01), Gebhardt
patent: 3830776 (1974-08-01), Carlson et al.
patent: R25564 (1964-04-01), Alford et al.
Raask, J. of the Institute of Fuel, Sept., 1968, pp. 339-344.

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