HIGH-TEMPERATURE TRIBOLOGICAL BEHAVIORS OF TiNi/Ti2Ni ALLOYED LAYER ON SURFACE OF Ti6Al4V ALLOY

Zhenxia Wang, Hairui Wu, Naiming Lin, Xiaohong Yao, Zhiyong He and Xiaoping Liu
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Zhenxia Wang: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
Hairui Wu: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
Naiming Lin: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
Xiaohong Yao: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
Zhiyong He: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
Xiaoping Liu: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China

Surface Review and Letters (SRL), 2017, vol. 24, issue 03, 1-7

Abstract: Plasma surface alloying (PSA) technique was employed with nickel as incident ions to prepare the TiNi/Ti2Ni alloyed layer on surface of Ti6Al4V. High-temperature friction and wear performance of TiNi/Ti2Ni alloyed layer and the Ti6Al4V substrate were evaluated at 500∘C. The results indicated that the TiNi/Ti2Ni alloyed layer exhibited superior high-temperature wear performance. The variations of friction coefficient were the same rule but wear rate was lower compared to Ti6Al4V substrate. The wear mechanism of TiNi/Ti2Ni alloyed layer was mainly slight abrasion and the Ti6Al4V substrate showed abrasion and oxidation wear. The friction coefficient of the TiNi/Ti2Ni alloyed layer decreased from 0.90 to 0.50 with the increase of temperature from room temperature to 500∘C.

Keywords: Ti6AL4V; plasma surface alloying; TiNi/Ti2Ni alloyed layer; high-temperature wear (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1142/S0218625X17500287

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