Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...
Patent
1990-07-30
1991-12-10
Pal, Asok
Cleaning and liquid contact with solids
Processes
For metallic, siliceous, or calcareous basework, including...
134 19, 134 31, 134 39, B08B 500, C23G 500
Patent
active
050714864
ABSTRACT:
A process for removing protective coatings and/or bonding layers from metal parts, particularly gamma prime hardened nickel base alloy, solid solution superalloy, iron base superalloy, and cobalt base superalloy parts to render them brazable or otherwise bondable. The process uses a C--O--H--F atmosphere as the primary stripping material wherein the atmosphere has a H/O ratio of 10.sup.4 or greater. The preferred source of the C--O--H--F atmosphere is thermal decomposition of a fluorocarbon resin.
REFERENCES:
patent: 4188237 (1980-02-01), Chasteen
patent: 4324594 (1982-04-01), Chasteen
patent: 4328044 (1982-05-01), Chasteen
patent: 4405379 (1983-09-01), Chasteen
Pal Asok
University of Dayton
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