Tribological Behaviors of Electroless Nickel-Boron Coating on Titanium Alloy Surface

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外文摘要：Titanium alloys are excellent structural materials in engineering fields,but their poor tribological properties limit their further applications.Electroless plating is an effective method to enhance the tribological performance of alloys,but it is difficult to efficiently apply to titanium alloys,due to titanium alloy's strong chemical activity.In this work,the elec-troless Nickel-Boron(Ni-B)coating was successfully deposited on the surface of titanium alloy(Ti-6AL-4V)via a new pre-treatment process.Then,linearly reciprocating sliding wear tests were performed to evaluate the tribological behaviors of titanium alloy and its electroless Ni-B coatings.It was found that the Ni-B coatings can decrease the wear rate of the titanium alloy from 19.89×10-3 mm3 to 0.41×10-3 mm3,which attributes to the much higher hardness of Ni-B coatings.After heat treatment,the hardness of Ni-B coating further increases corresponding to coating crystal-lization and hard phase formation.However,heat treatment does not improve the tribological performance of Ni-B coating,due to the fact that higher brittleness and more severe oxidative wear exacerbate the damage of heat-treated coatings.Furthermore,the Ni-B coatings heat-treated both in air and nitrogen almost present the same tribo-logical performance.The finding of this work on electroless coating would further extend the practical applications of titanium alloys in the engineering fields.

外文关键词：

Electroless coatingTitanium alloyTribologyWearHeat treatmentNanoindentation

作者：

Yao Jia、Jianping Lai、Jiaxin Yu、Huimin Qi、Yafeng Zhang、Hongtu He

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作者单位：

Key Laboratory of Testing Technology for Manufacturing Process in Ministry of Education,State Key Laboratory of Environment-Friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China

基金：

Sichuan Provincial Science and Technology Program of China国家自然科学基金Natural Science Foundation of Southwest University of Science and Technology of China

项目编号：

2018JY02455197549219xz7163

出版年：

2024

DOI：

10.1186/s10033-024-00990-1

中国机械工程学报

中国机械工程学会

中国机械工程学报

CSTPCD

影响因子：0.765

ISSN：1000-9345

年,卷(期)：2024.37(1)