US 12,146,213 B2
Method for regulating color of hard coating, hard coating, and method for preparing the same
Na Chen, Beijing (CN); Ying-Qi Zhang, Beijing (CN); and Kai-Ming Zheng, Beijing (CN)
Assigned to TSINGHUA UNIVERSITY, Beijing (CN)
Filed by TSINGHUA UNIVERSITY, Beijing (CN)
Filed on Apr. 5, 2021, as Appl. No. 17/222,989.
Application 17/222,989 is a continuation of application No. PCT/CN2018/114470, filed on Nov. 8, 2018.
Claims priority of application No. 201811222261.2 (CN), filed on Oct. 19, 2018.
Prior Publication US 2021/0222279 A1, Jul. 22, 2021
Int. Cl. C23C 14/00 (2006.01); C23C 14/08 (2006.01); C23C 14/18 (2006.01); C23C 14/35 (2006.01); C23C 14/54 (2006.01)
CPC C23C 14/0015 (2013.01) [C23C 14/085 (2013.01); C23C 14/18 (2013.01); C23C 14/35 (2013.01); C23C 14/542 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for regulating color of a hard coating, comprising:
providing a substrate and a binding layer deposited on the substrate;
forming an amorphous alloy layer on the binding layer in order to adhere to the substrate through the binding layer;
forming an amorphous metal oxide layer on a surface of the amorphous alloy layer to stack the amorphous metal oxide layer on the amorphous alloy layer, so that the amorphous metal oxide layer and the amorphous alloy layer together form the hard coating, wherein a band gap of the amorphous metal oxide layer is in a range from 2 eV to 5 eV, and the color of the hard coating is capable of varying within the visible light spectrum with thickness of the amorphous metal oxide layer; and
controlling the thickness of the amorphous metal oxide layer during the formation of the amorphous metal oxide layer in order to obtain a predetermined color on a surface of the amorphous metal oxide layer;
wherein the binding layer is a dual-phase nano-amorphous composite layer, and the dual-phase nano-amorphous composite layer contains an amorphous alloy phase composed of the same elements as the amorphous alloy layer and an amorphous metal oxide phase composed of the same elements as the amorphous metal oxide layer.