Hard and tough CrN coatings strengthened by high-density distorted coherent grain boundaries

被引：0

作者：

Liu, Liangliang ^{[1
]}

Ruan, Qingdong ^{[1
]}

Wu, Zhongzhen ^{[2
]}

Li, Tijun ^{[2
]}

Zuo, Wei ^{[2
]}

Huang, Chao ^{[1
]}

Wu, Yuzheng ^{[1
]}

Wu, Zhongcan ^{[2
]}

Fu, Ricky K.Y. ^{[1
]}

Chu, Paul K. ^{[1
]}

机构：

[1] Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong

[2] School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen,518055, China

来源：

Journal of Alloys and Compounds | 2022年 / 894卷

关键词：

Toughness - Chromium compounds - Grain boundaries - Ion bombardment - Density (specific gravity) - Hard coatings;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Coherent grain boundaries (CGBs) has been revealed to improve the hardness and toughness simultaneously, but the density are not enough to increase their mechanical properties. Herein, hetero-interfaces are formed by introducing ion bombardment during magnetron sputtering to increase the amount of CGBs in the CrN coatings. By optimizing the sub-layer thickness, the quantity and width of CGBs from the (111) to (200) orientations increase significantly and consequently, the hardness and toughness of the CrN coating increase to 33.4 GPa and 14.98 MPa m1/2, respectively. At last, the effect of the different CGBs to the coating strengthen is discussed. © 2021 Elsevier B.V.

引用

共 50 条

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