Substrates with improved oxidation resistance

Details Substrates with improved oxidation resistance Substrates with improved oxidation resistance

H - Electricity

01

B

H01B 12/02 (2006.01) B22F 1/00 (2006.01) B22F 3/18 (2006.01) B22F 7/02 (2006.01) B22F 7/08 (2006.01) B32B 15/04 (2006.01) B32B 18/00 (2006.01) C04B 35/622 (2006.01) C22C 9/00 (2006.01) C22C 9/06 (2006.01) C22C 19/03 (2006.01) C22C 32/00 (2006.01) H01L 39/24 (2006.01)

Patent

CA 2305646

An alloy article having improved oxidation resistance and biaxially textured surfaces formed by thermo-mechanical techniques has up to 60 atomic % nickel, 0.1 to 25 atomic % of an oxide former selected from Mg, Al, Ti, Cr, Ga, Ge, Zr, Hf, Y, Si, Pr, Eu, Gd, Tb, Dy, Ho, Lu, Th, Er, Tm, Be, Ce, Nd, Sm, Yb, La, and mixtures thereof, with the balance copper. The surface smoothness of the article may be improved by thermomechanical techniques without impairing its surface texture. The CTE of the article may be reduced and its mechanical strength increased by incorportation of additional materials into the article without impairing its surface texture. The alloy article is useful as a conductive substrate for superconducting composites where the substrate is coated with a superconducting oxide. Methods of producing the alloy article by melting and sheath and core thechniques are also disclosed.

L'invention concerne un article d'alliage possédant une résistance accrue à l'oxydation, et présentant des surfaces texturées biaxialement qui sont formées par des techniques thermomécaniques. L'article renferme jusqu'à 60 % d'atomes de nickel, de 0,1 à 25 % d'atomes d'un agent formateur d'oxyde sélectionné dans le groupe constitué par Mg, Al, Ti, Cr, Ga, Ge, Zr, Hf, Y, Si, Pr, Eu, Gd, Tb, Dy, Ho, Lu, Th, Er, Tm, Be, Ce, Nd, Sm, Yb, La et leurs mélanges, le reste étant du cuivre. On peut améliorer le lissage de surface de l'article par des techniques thermomécaniques sans altérer sa texture de surface. On peut réduire le coefficient de dilatation thermique de l'article et accroître sa résistance mécanique par l'incorporation de matières supplémentaires dans l'article sans altérer sa texture de surface. L'article d'alliage est utile comme substrat conducteur pour des composites supraconducteurs dans lesquels le substrat est revêtu d'un oxyde supraconducteur. L'invention concerne également des procédés de production de l'article d'alliage par des techniques de fusion et de formation de gaine et de noyau.

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