Fe<sup>+</sup>注入增强Ti6Al4V表面喷丸强化层的生物摩擦学性能<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.02.010

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Abstract Fe⁺ with different energies and doses were implanted into shot-peened layers (the diameter of shot peen was 4 mm) on Ti6Al4V to improve the bio-tribological properties. The nano-hardness of modified layers was measured by Nano Indenter Ⅱ and bio-tribological tests were performed on MRTR multifunctional machine with artificial saliva and sodium hyaluronate as lubricants. The friction pairs used in the bio-tribological test were ZrO₂ ball/modified layers on Ti6Al4V. S-3000N SEM was used to observe the surface microstructures and grinding cracks. The results demonstrated that the formed phases in the shot-peened layers on Ti6Al4V by Fe⁺ implantation were Fe₂Ti. With the increase of ion energies and doses, the content of Fe₂Ti increased from 3.7% to 4.7%; the nano-hardness of modified layers on Ti6Al4V by Fe⁺ implantation increased from 8.46 GPa to 10.29 GPa, which were much higher than the ones with value 5.59 GPa of the single shot-peened layer; the friction coefficient of modified layers with Fe⁺ implantation decreased from 0.53 to 0.38 and from 0.49 to 0.28 under artificial saliva and sodium hyaluronate, which were lower than ones with value 0.62 and 0.59 of the single shot-peened layer, respectively, and the wear loss of Fe⁺ implantation layers reduced to varying degrees. We can inferred that Fe⁺ implantation obviously improves friction and wear resistance of the single shot-peened layer on Ti6Al4V surface.

Key words： Ti6Al4V Fe⁺ implantation shot-peening bio-tribology artificial saliva sodium hyaluronate

Published: 02 May 2018

CLC number:

TG178.1

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	Articles by authors
	ZHENG Yu
	WANG Yuan
	YU Xiaohua

Cite this article:

ZHENG Yu,WANG Yuan,YU Xiaohua. Bio-tribological Properties of Shot-peened Layers on Ti6Al4V Improved by Fe⁺ Implantation[J]. Materials Reports, 2017, 31(2): 46-50.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.02.010 OR http://www.mater-rep.com/EN/Y2017/V31/I2/46

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