US 11,890,831 B2
Composite member and heat radiation member
Kengo Goto, Osaka (JP); Tomoaki Ikeda, Osaka (JP); Akihisa Hosoe, Osaka (JP); Fukuto Ishikawa, Sakata (JP); and Masanori Sugisawa, Sakata (JP)
Assigned to Sumitomo Electric Industries, Ltd., Osaka (JP); and A.L.M.T. Corp., Tokyo (JP)
Appl. No. 17/600,298
Filed by Sumitomo Electric Industries, Ltd., Osaka (JP); and A.L.M.T. Corp., Tokyo (JP)
PCT Filed Mar. 5, 2020, PCT No. PCT/JP2020/009414
§ 371(c)(1), (2) Date Sep. 30, 2021,
PCT Pub. No. WO2020/203014, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-070853 (JP), filed on Apr. 2, 2019.
Prior Publication US 2022/0168995 A1, Jun. 2, 2022
Int. Cl. B32B 15/01 (2006.01); C22C 29/06 (2006.01); C23C 18/32 (2006.01); C23C 18/38 (2006.01); C25D 3/38 (2006.01)
CPC B32B 15/01 (2013.01) [C22C 29/065 (2013.01); C23C 18/32 (2013.01); C23C 18/38 (2013.01); C25D 3/38 (2013.01); Y10T 428/12576 (2015.01)] 7 Claims
OG exemplary drawing
 
1. A composite member comprising:
a substrate composed of a composite material containing pure magnesium and SiC, or a magnesium alloy and SiC; and
a coating layer provided on a surface of the substrate, wherein
the coating layer includes
an outermost layer provided as an outermost surface, and
an intermediate layer provided directly under the outermost layer,
the outermost layer contains nickel and phosphorus,
the intermediate layer is mainly composed of copper,
the intermediate layer has a thickness not smaller than 30 μm, and
the outermost layer contains an amount of phosphorus not lower than 1 mass % and not higher than 6 mass % of the outermost layer.