US 7,320,832 B2
Fine-grained metallic coatings having the coefficient of thermal expansion matched to the one of the substrate
Gino Palumbo, Toronto (Canada); Jonathan McCrea, Toronto (Canada); Klaus Tomantschger, Mississauga (Canada); Iain Brooks, Toronto (Canada); Daehyun Jeong, Oakville (Canada); Dave Limoges, Etobicoke (Canada); Konstantinos Panagiotopoulos, Toronto (Canada); and Uwe Erb, Toronto (Canada)
Assigned to Integran Technologies Inc., Toronto, Ontario (Canada)
Filed on Dec. 09, 2005, as Appl. No. 11/297,805.
Application 11/297805 is a continuation in part of application No. 11/013456, filed on Dec. 17, 2004.
Prior Publication US 2007/0281176 A1, Dec. 06, 2007
Int. Cl. B32B 5/16 (2006.01); B32B 7/02 (2006.01); B32B 7/04 (2006.01); B32B 15/04 (2006.01); B32B 15/16 (2006.01)
U.S. Cl. 428—548  [428/553; 428/565; 428/615; 428/457] 21 Claims
 
1. An article comprising
(a) a permanent substrate which at room temperature has a coefficient of thermal expansion in the range between −5.0×10−6K−1 and 25×10−6K−1;
(b) a fine grained metallic coating on the permanent substrate, having an average grain size between 2 and 1,000 nm, a thickness between 25 micron and 5 cm and a coefficient of thermal expansion in the range between −5.0×10−6K−1 and 25×10−6K−1; and
(c) said article exhibiting no delamination and the displacement of the coating relative to the underlying substrate is less than 2% after said article has been exposed to one temperature cycle consisting of exposure to liquid nitrogen for one minute followed by exposure to 90° C. hot water for one minute, or one temperature cycle according to ASTM B553-71 service condition 1, 2, 3 or 4.