Microstructure and tribological performance of laser cladded Ti-NiCrAl coating by Ti-dilution effect

被引：0
|
作者：
Cao, Furong [1 ]
Chen, Jufang [2 ]
Kong, Dejun [3 ]
机构：
[1] Jiangsu Univ Technol, Sch Int Educ, Changzhou 213001, Peoples R China
[2] Jiangsu Univ Technol, Sch Mech Engn, Changzhou 213001, Peoples R China
[3] Changzhou Univ, Sch Mech Engn, Changzhou 213164, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2023年 / 129卷 / 01期
关键词：
Laser cladding (LC); Ti-NiCrAl coating; Elevated temperature; Coefficient of friction (COF); Wear rate; Wear mechanism; HIGH-TEMPERATURE OXIDATION; MECHANICAL-PROPERTIES; COMPOSITE COATINGS; BEHAVIOR; RESISTANCE; ALLOY;
D O I：
10.1007/s00339-022-06314-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ti-NiCrAl coating was fabricated on the substrate of Ti6Al4V alloy by laser cladding (LC), in which the Ti originated from the diluted element of substrate. The results show the Ti-NiCrAl coating is composed of NiTi and NiTi2 phases with the trace CrO and Al2O3 phases, in which the oxide phases are acted as an effective barrier to provide high-temperature protection for the substrate. The coefficient of friction (COF) and wear rate of Ti-NiCrAl coating are decreased with the elevated temperatures, which is attributed to the phase transformation of NiTi and NiTi2. The wear mechanism is the combination of abrasive wear and adhesive wear, in which the phase transformation of NiTi and NiTi2 phases play the roles of friction reduction and wear resistance.
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页数：11
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