Stock material or miscellaneous articles – Self-sustaining carbon mass or layer with impregnant or...
Patent
1991-08-21
1995-07-11
Turner, A. A.
Stock material or miscellaneous articles
Self-sustaining carbon mass or layer with impregnant or...
428212, 428336, B32B 900
Patent
active
054320038
ABSTRACT:
A continuous thin diamond film having a thickness of less than about 2 microns has a permeability to helium lower than about 1.times.10.sup.-6 standard cubic centimeters of helium per second per square millimeter of surface area. The thin diamond film may be supported on a supporting grid and may be incorporated into an x-ray window. The thin diamond film of the present invention may be formed in a two-stage growth process wherein a first stage a carbonaceous gas at a first concentration is introduced in to the reactor and in a second stage the concentration of the carbonaceous gas is reduced to a second lower concentration.
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Matsumoto et al. "Growth of Diamond Particles from Methane Hydrogen Gas" Jour. of Mat Scien 17 (1982) 51063112.
Matsumoto et al. "Chemical Vapor Deposition of Diamond from Methane-Hydrogen Gas" Pro 7th ICVM, 1987, pp. 386-391.
Peters Michael G.
Pinneo John M.
Plano Linda S.
Ravi Kramadhati V.
Crystallume
Turner A. A.
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