Coating processes – Heat decomposition of applied coating or base material – Coating decomposed to form metal
Patent
1990-02-22
1992-11-03
Bell, Janyce
Coating processes
Heat decomposition of applied coating or base material
Coating decomposed to form metal
427377, 427380, B05D 302
Patent
active
051607654
ABSTRACT:
Metallization of ceramics of the type comprising depositing a metallic paste based on molybdenum and/or tungsten and manganese on a ceramic substrate and effecting the sintering of the paste in an atmosphere having a predetermiend oxido-reduction potential, with a rise in and a maintenance of a temperature between 1300.degree. C. and 1600.degree. C., then cooling to ambient temperature, with production of an atmosphere by the addition to a pure neutral gas of a quantity of additional oxygen and a quantity of hydrogen at least sufficient to subsequently obtain by catalytic reaction the desired content of water vapour and contingently the excess content of hydrogen.
REFERENCES:
patent: 4822645 (1989-04-01), Oda et al.
Solid State Technology, Apr. 1985, Air Products & Chemicals Inc.; E. A. Hayduk, Jr.: "Effect of Atmosphere Composition on Metallizing A1203 Substrates with Mo-Mn Paste".
American Ceramic Society Bulletin, vol. 66, No. 10, 1987, pp. 1510-1512, ACerS; F. W. Giacobbe: "Advanced Gas Moisturizing System for Ceramic Processing Applications".
Olivier Michel
Queille Philippe
Rancon Yannick
Rotman Frederic
Bell Janyce
L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation De
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