FABRICATION AND TRIBOLOGICAL PROPERTIES OF GRADIENT FINE-GRAINED OXYGEN-BOOSTING LAYER ON ECAP-TREATED PURE TITANIUM SURFACE

Baosen Zhang, Jiying Wang, Shuaishuai Zhu, Qiangsheng Dong and Zhangzhong Wang
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Baosen Zhang: School of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China2Jiangsu Key Laboratory of Advanced Structural, Materials and Application Technology, Nanjing 211167, P. R. China
Jiying Wang: School of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China2Jiangsu Key Laboratory of Advanced Structural, Materials and Application Technology, Nanjing 211167, P. R. China
Shuaishuai Zhu: School of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China2Jiangsu Key Laboratory of Advanced Structural, Materials and Application Technology, Nanjing 211167, P. R. China
Qiangsheng Dong: School of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China2Jiangsu Key Laboratory of Advanced Structural, Materials and Application Technology, Nanjing 211167, P. R. China
Zhangzhong Wang: School of Materials Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China2Jiangsu Key Laboratory of Advanced Structural, Materials and Application Technology, Nanjing 211167, P. R. China

Surface Review and Letters (SRL), 2019, vol. 26, issue 06, 1-6

Abstract: The gradient fine-grained oxygen-boosting layer was prepared on equal channel angular processing (ECAP)-treated titanium with thermal oxidation and oxygen boost diffusion process, and tribological properties were systematically characterized. Results show that the as-prepared boosting layer consists of surface coarse-grained region, and inner fine-grained region. The corresponding thickness and mechanical properties further increase compared to those of virgin titanium. The oxygen-boosting layer reveals excellent anti-wear properties, the dominant wear mechanism of which is abrasive.

Keywords: Pure titanium; ECAP; microstructure; oxidation; oxygen-boosting layer; wear resistance (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1142/S0218625X18501998

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