Interfacial and tribological properties of laser deposited TiOxNy/Ti composite coating on Ti alloy

被引：22
|
作者：
Zhao, Yitian [1 ]
Fan, Zhiqi [1 ]
Tan, Qiyang [1 ]
Yin, Yu [1 ]
Lu, Mingyuan [1 ]
Huang, Han [1 ]
机构：
[1] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
来源：
TRIBOLOGY INTERNATIONAL | 2021年 / 155卷 / 155期
基金：
澳大利亚研究理事会;
关键词：
Wear-resistant coating; Metal matrix composite; Interfacial adhesion; Hardness; TITANIUM OXYNITRIDE COATINGS; IN-SITU FORMATION; WEAR-RESISTANCE; TI6AL4V ALLOY; MICROSTRUCTURAL EVOLUTION; TEMPERATURE; BEHAVIORS;
D O I：
10.1016/j.triboint.2020.106758
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this work, a wear-resistant TiOxNy/alpha-Ti composite coating was deposited by laser cladding TiO2 powder onto Ti-6Al-4V in air. Dendritic TiOxNy reinforcements were synthesized in situ via reactions between Ti, TiO2 and N-2. The partially-melted substrate mixed with the ceramic melt and formed alpha-Ti matrix that bonded chemically with the reinforcements. Stacking faults, induced by thermal stress, were found in the TiOxNy grains, which exerted a strain hardening effect. The coating had an average microhardness of 1417 HV0.3, four times that of Ti-6Al-4V. The wear resistance of the composite coating was 3.7 times that of Ti-6Al-4V, which was attributed to its high hardness and the strong TiOxNy/alpha-Ti and coating/substrate interfaces.
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收藏
页数：9
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