The Microstructure and Wear Resistance of Microarc Oxidation Composite Coatings Containing Nano-Hexagonal Boron Nitride (HBN) Particles

被引：30
作者：
Li, Zhenwei [1 ]
Di, Shichun [1 ]
机构：
[1] Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2017年 / 26卷 / 04期
关键词：
2024 aluminum alloy; adhesion strength; composite ceramic coatings; microarc oxidation; nano-HBN particles; wear resistance; PLASMA ELECTROLYTIC OXIDATION; TRIBOLOGICAL PROPERTIES; MAGNESIUM ALLOY; ALUMINUM-ALLOY; ARC OXIDATION; CERAMIC COATINGS; TI6AL4V ALLOY; PEO; SUBSTRATE; PROPERTY;
D O I：
10.1007/s11665-017-2582-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The composite coatings containing HBN were prepared on 2024 aluminum alloy by microarc oxidation in the electrolyte with nano-HBN particles. The microstructure, surface roughness, phase composition, hardness, adhesion strength and wear resistance of composite coatings were analyzed by SEM, EDS, laser confocal microscope, XRD, Vickers hardness tester, scratch test and ball-on-disc abrasive tests. The results revealed that composite coatings were mainly composed of gamma-Al2O3, alpha-Al2O3, mullite and HBN. With increasing the content of HBN particles in the electrolyte, the size and number of the pores on the surface of composite coatings decreased significantly. Compared to the MAO coatings without HBN, the composite coatings exhibited better wear resistance, as demonstrated by the lower friction coefficient and the lower wear rate.
引用
收藏
页码：1551 / 1561
页数：11
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