Graphite-glass composite laser mirror

Details Graphite-glass composite laser mirror Graphite-glass composite laser mirror

1979-07-02

1981-03-17

Henry, Jon W.

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

106 56, G02B 508

Patent

active

042563780

ABSTRACT:
A laser mirror stable at high and low temperatures is described comprising graphite fibers in a glass matrix. The mirror is made by hot pressing a graphite fiber lay-up in a glass matrix in a die, the fibers laid up in such a way to produce a central plane of symmetry across the central plane of the composite. In use, the composite requires a separate laser reflecting surface layer. The resulting laser mirror has a low density but no porosity, high elastic stiffness, high strength, high fracture toughness, low thermal expansion, high thermal conductivity and environmental stability.

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Thompson et al., Research on Graphite Reinforced Glass Matrix Composites, NASA Contract Report 158946, Jun. 1978.
Bacon et al. Research on Graphite Reinforced Glass Matrix Composites, NASA Contract Report 145245, Jun. 1977.
Prewo et al. "Glass Matrix Composites...", Proc. of the 2nd Inter. Conf. on Composite Materials, Apr. 1978.

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