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Stability of MLG/Fe2O3 Nano-particulate Tribo-layer on TC11 Ti-alloy |
ZHOU Yin1(),WANG Shuqi2,ZHAO Zhenjiang1,XU Sheng1,WANG Jian1 |
1. School of Shipping and Mechatronic Engineering, Taizhou University, Taizhou 225300, China 2. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China |
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Cite this article:
ZHOU Yin,WANG Shuqi,ZHAO Zhenjiang,XU Sheng,WANG Jian. Stability of MLG/Fe2O3 Nano-particulate Tribo-layer on TC11 Ti-alloy. Chinese Journal of Materials Research, 2019, 33(10): 763-770.
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Abstract The tribological behavior of TC11 Ti-alloy was studied via an MPX-2000 type friction and wear tester with TC11Ti-alloy as pin and GCr15 steel as disc in conditions of applying different loads and incorporating various nano-lubricants onto the interface of pin/disc. The surface morphology, cross-section morphology, composition and structure of worn TC11 Ti-alloy were comparatively characterized by means of scanning electron microscopy with energy dispersive spectroscope and X-ray diffractometer. The results show that tribo-layer of nano-particulates could form on the worn surface of TC11 Ti-alloy when different type of nanomaterials were incorporated onto the sliding interface of the tribo-pairs. The stability of the tribo-layer depends on its composition and the relative content of each component. The multi-layered graphene (MLG) containing tribo-layer possessed poor stability and readily damaged because of its low load-bearing capacity. The Fe2O3 containing tribo-layer possessed good stability under lower loads, resulting in the reduced wear and increased friction. The double-layered tribo-layer composed simultaneously of MLG and Fe2O3 possessed high stability, which can be ascribed to the good lubrication and load-bearing capacity. As a result, the friction and wear performance of TC11 Ti-alloy was markedly enhanced. Especially the double-layered MLG/Fe2O3 nano-particulate tribo-layer with Fe2O3-rich nanocomposite possessed higher stability and thus the tribological properties of TC11 Ti-alloy could be much effectively improved.
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Received: 30 May 2019
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Fund: National Science Foundation of the Jiangsu Higher Education Institutions of China(18KJB430025);Jiangsu Province Key Laboratory of High-end Structural Materials Open Fund Project(hsm1807);Science and Technology Support Program of Taizhou(TS201820);Research Startup Fund Project for High-level Talents of Taizhou University(TZXY2017QDJJ013) |
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