Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1995-01-23
1996-11-26
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
264 61, 264 63, 264344, C04B 3510
Patent
active
055782574
ABSTRACT:
A process for removing poly(vinylbutyral) binder from multilayer alumina structures containing metal circuitry. The green structure is heated in a defined atmosphere which is reducing or neutral with respect to the metal circuitry, and at higher temperatures, oxidizing with respect to carbon. The atmosphere comprises inert gas, water vapor and up to about 20% hydrogen.
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"Removal of Carbonaceous Residue With Wet Hydrogen in Greensheet Processing For Multilayer Ceramic Module: II, Reaction in Layer Modules Influenced by Pore Diffusion and Mass Transfer" by Sohn et al. J. Am. Ceram. Soc., 73(10) 2953-61 (1990).
"Furnace Atmosphere's Effect On Cofiring Tungsten-Alumina Multilayer Substrates" by Hayduk et al., Solid State Technology/Sep. 1986 pp. 135-138.
Cima et al., "Firing-Atmosphere Effects On Char Content from Alumina-Polyvinyl Butyral Films", Ceramic Transactions (Ceramic Powder Science II,A), vol. 1, pp. 567-574 (1988).
Denninger Douglas E.
Derrington James
Praxair Technology Inc.
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