Effect of Al2O3 Nanoparticles and Heat Treatment on the Wear Resistance of Electrodeposited Ni-W/Al2O3 Composite Coatings

• Published in: Journal of materials engineering and performance 2022-04, Vol.31 (4), p.3094-3106
• Main Authors: Shi, Xinyang, Zhang, Zhongquan, Dai, Leyu, Lv, Yin, Xu, Zhao, Yin, Yibiao, Liao, Zhiqun, Wei, Guoying
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; Engineering Design; Materials Science; Quality Control; Reliability; Safety and Risk; Tribology
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-021-06392-x

In this work, Ni-W/Al 2 O 3 composite coatings with Al 2 O 3 content from 0 to 8 wt.% were electrodeposited and heat treated to study the influence of Al 2 O 3 nanoparticles and heat treatment on the wear resistance of Ni-W/Al 2 O 3 coatings. The wear resistance of as-deposited Ni-W/Al 2 O 3 coatings is obviously improved by incorporation of Al 2 O 3 nanoparticles, which can strongly alleviate the serious plowing during the sliding abrasion. By heat treatment at 300 °C, microhardness and wear resistance of Ni-W/Al 2 O 3 are simultaneously improved. For the Ni-W/Al 2 O 3 coatings heat treated at 700 °C, the grain size increases while the microhardness is barely changed in comparison with the as-deposited coatings, and the wear resistance is improved with low Al 2 O 3 content but degraded at high Al 2 O 3 content. The evolution of wear resistance of Ni-W/Al 2 O 3 coatings can be related to microhardness, incorporation of Al 2 O 3 , precipitation strengthening and interphase interfaces.