Patent
1980-12-23
1983-06-07
Henry, Jon W.
G02B 510, G02B 718
Patent
active
043868258
ABSTRACT:
Laser mirrors of high thermal conductivity and dimensional stability at high temperatures are disclosed which also contain cooling channels in close proximity to the laser radiation reflecting surface. Methods of making the same are also disclosed comprising using channel forming inserts laid up between layers of the graphite fiber and glass composition which are then hot pressed and removed either by the application of mechanical pressure or chemical dissolution. Alternatively, such inserts are laid on the mold and the graphite-glass composition hot pressed on the inserts which are then mechanically removed followed by bonding a flat sheet of a separately formed graphite-glass composite to the grooved surface. Another method includes forming grooves in a preformed graphite-glass composite followed by filling the grooves with channel forming inserts and hot pressing additional graphite-glass on the inserts.
REFERENCES:
patent: 3131238 (1964-04-01), Carnall, Jr. et al.
patent: 3311522 (1967-03-01), Ladd et al.
patent: 3711936 (1973-01-01), Athey et al.
patent: 3824301 (1964-07-01), Carnall, Jr. et al.
patent: 4214818 (1980-07-01), Choyke et al.
patent: 4221469 (1980-09-01), Stalcup et al.
patent: 4256378 (1981-03-01), Prewo et al.
Thompson et al., Research on Graphite Reinforced Glass Matrix Composites, NASA Contract Report 158946, Jun. 1978.
Prewo Karl M.
Stalcup Robert K.
Gwinnell Harry J.
Henry Jon W.
United Technologies Corporation
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