B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
117/52
B28B 19/00 (2006.01) B05D 1/02 (2006.01) B05D 1/08 (2006.01) C23C 4/02 (2006.01) F23R 3/00 (2006.01)
Patent
CA 1149241
D-4123 C-3204 METHOD FOR COATING POROUS METAL STRUCTURE Abstract of the Disclosure An improved method for coating a porous metal laminated structure having air flow holes on the coated side of the structure including in part, the steps of roughening an exposed surface of the porous laminated material and thereafter spraying a bond layer on the roughened surface at an angle selected to coat it with a thin bond coat layer while depositing only a limited amount of the bond coat material internally of the air flow holes and thereafter spray coating the bond coated sur- face with a top ceramic coat of heat resistant composition and characterized by requiring a bond coat for adherence to the porous metal laminated material and wherein the top ceramic coat spray angle is inclined opposite to that of the spray angle of deposition of the bond coat material to prevent deposition of the top coat on bond material internally of the air flow holes so as to prevent bonding of the ceramic top coat in the air flow holes thereby to minimize restriction of flow through the air flow hole in the exposed surface of the porous metal laminate.
365071
Cavanagh John R.
Clingman David L.
Cross Kenneth R.
Schechter Berton
General Motors Corporation
Gowling Lafleur Henderson Llp
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