Patent · US Active

Post-processing method for improving anti-wear and friction-reducing properties of CrN coating

US11377729B2 · kind B2 · utility

0Cited by

1References

8Claims

0Family size

Assignee

NINGBO INSTITUTE OF MATERIALS TECHNOLOGY & ENGINEERING, CHINESE ACADEMY OF SCIENCES · CN

Inventors

Yongxin Wang · San Ramon, US
Zechao Li · Zhejiang, CN
Jingwen Zhang · Houston, US
Zhixiang Zeng · Zhejiang, CN
Jinlong Li · Nanhu, CN
Xia Lu · Suzhou, CN
Liping Wang · Huaibei, CN

Key dates

Filing date	Dec 20, 2018
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Jan 9, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C14/325
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Disclosed is a post-processing method for improving anti-wear and friction-reducing properties of a CrN coating. According to the method, the CrN coating is subjected to a thermal cycling treatment in a temperature range of −20° C. to 60° C. under a humidity environment of 60%-80% R.H. The post-processing method can substantially improve the anti-wear and friction-reducing properties of the CrN coating, so that friction pair parts deposited with the coating achieve a stable operation for a long time.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.