Plasma sprayed Al2O3-40%TiO2 coating by laser remelting: Structural evolution, tribological properties and DFT calculation

被引：13
|
作者：
Lu, Yuling [1 ]
Peng, Yuxing [1 ]
Shi, Zhiyuan [2 ]
机构：
[1] China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Jiangsu, Peoples R China
[2] China Min Prod Safety Approval & Certificat Ctr Co, Beijing 100010, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2023年 / 189卷
基金：
中国国家自然科学基金;
关键词：
Laser remelting; Al 2 O 3-40%TiO 2 coating; Tribological property; Density functional theory calculation; WEAR-RESISTANCE; MECHANICAL-PROPERTIES; CORROSION BEHAVIOR; CERAMIC COATINGS; TIO2; ADDITION; MICROSTRUCTURE; MICROHARDNESS; PERFORMANCE; ADHESION; HARDNESS;
D O I：
10.1016/j.triboint.2023.109009
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A plasma sprayed Al2O3-40%TiO2 coating was processed by laser remelting to improve its tribological proper-ties. The effect of laser remelting on the tribological properties of obtained coatings was investigated using a ball-on-disc wear tester, and the wear mechanisms were discussed by the density functional theory calculation. The results show that the phase of plasma sprayed Al2O3-40%TiO2 coating is changed from TiAl2O5 to Al2O3/ Ti3O5 by laser remelting, and the grains of laser remelted Al2O3-40%TiO2 coating become refined to improve the coating hardness. The average coefficient of friction and wear rate of plasma sprayed Al2O3-40%TiO2 coating is decreased by laser remelting, which is attributed to the higher binding energy of Al-O in laser remelted Al2O3-40%TiO2 coating.
引用
收藏
页数：12
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