US 12,480,203 B2
Coating member and preparation method thereof, housing, and electronic product
Yuebin Yu, Shenzhen (CN); Jinbao Xu, Shenzhen (CN); and Xiangwei Wang, Shenzhen (CN)
Assigned to BYD Company Limited, Shenzhen (CN)
Filed by BYD COMPANY LIMITED, Guangdong (CN)
Filed on Sep. 27, 2023, as Appl. No. 18/373,842.
Application 18/373,842 is a continuation of application No. PCT/CN2022/087627, filed on Apr. 19, 2022.
Claims priority of application No. 202110484484.1 (CN), filed on Apr. 30, 2021.
Prior Publication US 2024/0018644 A1, Jan. 18, 2024
Int. Cl. C23C 14/34 (2006.01); C23C 14/00 (2006.01); C23C 14/04 (2006.01); C23C 14/16 (2006.01); C23C 14/58 (2006.01)
CPC C23C 14/34 (2013.01) [C23C 14/0015 (2013.01); C23C 14/04 (2013.01); C23C 14/16 (2013.01); C23C 14/5833 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus, comprising a substrate, an anodic oxidation layer, and a base layer,
the anodic oxidation layer being disposed on a surface of the substrate,
the base layer being disposed on a surface of the anodic oxidation layer,
the base layer comprising a first base layer and a second base layer stacked on the anodic oxidation layer,
each of the first base layer and the second base layer comprising a deposition layer of a first metal, and an average grain size of the first base layer being less than an average grain size of the second base layer,
the anodic oxidation layer comprising a nanopore structure, and grains of the first base layer being at least partially embedded in the nanopore structure of the anodic oxidation layer, wherein a size of pores of the nanopore structure of the anodic oxidation layer is from 10 nm to 100 nm, and a density of pores in the nanopore structure of the anodic oxidation layer is from 100 per μm2 to 3000 per μm2.