Low CTE metal-ceramic composite articles, and methods for making same
AssigneeM Cubed Technologies, Inc.
InventorsPrashant G. Karandikar, Jai R. Singh, Clarence A. Andersson
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Abstract
A mirror having low density, low CTE, high thermal conductivity, high elastic modulus, and a reflective, polishable surface. The instant mirror features a silicon-based metal coating as the reflective surface, and a composite body as a support or substrate for the reflecting surface. The composite body features carbon fibers reinforcing a matrix containing silicon metal and optionally some silicon carbide. The metal coating can be elemental silicon metal, possibly in amorphous form, and can be applied by a vapor deposition process such as chemical vapor deposition (e.g., plasma enhanced CVD) or physical vapor deposition such as evaporation or electron beam PVD.
Claims8
A mirror comprising a reflective surface bonded to a substrate, the reflective surface comprising silicon metal, the substrate comprising a composite body comprising (i) a matrix component comprising silicon metal, (ii) a reinforcement material comprising a plurality of carbon fibers distributed throughout said matrix component, and (iii) at least one coating disposed between said carbon fibers and said matrix, and further wherein said substrate has a CTE between about negative 0.46 and positive 1.75 ppm/K.
Dependencies are inferred from the claim text.