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research-article

Modification of tribo-layers of a titanium alloy sliding against a steel

[+] Author and Article Information
Yin Zhou

School of Shipping and Mechatronic Engineering, Taizhou University, No. 93 Jichuan West Road, 225300 Taizhou, China
626819302@qq.com

Wei Jiang

School of Materials Science and Engineering, Jiangsu University, No. 301 Xuefu Road, 212013 Zhenjiang, China
miracle8980@sina.com

Wei Chen

School of Materials Science and Engineering, Jiangsu University, No. 301 Xuefu Road, 212013 Zhenjiang, China
1371560049@qq.com

Xiulin Ji

Engineering Research Center of dredging Technology, Ministry of Education, Hohai University, No.5 Hehai Road, Changzhou 213022, China
xiulinji@gmail.com

Yunxue Jin

School of Materials Science and Engineering, Jiangsu University of Science and Technology, No.2 Mengxi Road, 212003 Zhenjiang, China
jinyunxue@126.com

Shuqi Wang

School of Materials Science and Engineering, Jiangsu University, No. 301 Xuefu Road, 212013 Zhenjiang, China
shuqi_wang@ujs.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4039162 History: Received July 27, 2017; Revised December 14, 2017

Abstract

The non-protective tribo-layers of the titanium alloy were modified into additives-containing tribo-layers through an artificial addition of multilayer graphene (MLG), Fe2O3 nanomaterials or their mixtures with various proportions on the titanium alloy/steel sliding interface. The sustainability of the modified tribo-layers under a high load was evaluated by the critical revolution for a mild-to-severe wear transition. The modified tribo-layers were found to significantly improve or deteriorate tribological performance of the titanium alloy, which was decided by their ingredients. The pure MLG- or Fe2O3-containing tribo-layers, because of their lacking load-bearing or lubricant capacity, presented poor sustainability and readily lost protection to cause high wear loss or frictional coefficient. However, for the addition of various mixtures of MLG and Fe2O3, the modified tribo-layers possessed a double-layer structure consisting of friction-reducing MLG- and wear-resistant Fe2O3-predominated layers. They presented a sustainable protection, thus remarkably improving the tribological performance of the titanium alloy.

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