Fretting behavior of NiTi shape memory alloy against long bone in the imitated human physiological solution

doi:10.1117/12.780036

	Fretting behavior of NiTi shape memory alloy against long bone in the imitated human physiological solution
	Yin, Y.1; Xu, Y. T.1; Xia, T. D.1; Da, G. Z.2
	2007
关键词	NiTi shape memory alloy Hank's solution fretting wear friction coefficient
卷号	6423
DOI	10.1117/12.780036
英文摘要	The environment of orthopaedic implants sometimes induces vibrations at the contact of the modular prostheses components. In this paper the fretting behavior of NiTi SMAs against human bones in the imitated human physiological solution was studied at various displacement amplitudes and Ph value. Surface micrograph after fretting was observed by MEF3 microscope. Appearance of fretting scar was measured by 2206 roughness tester. The result shows that the friction coefficient between the bone and NiTi SMAs pairs declined due to the lubrication effect of Hank's solution, and which increased when Ph value of fluid was not 7.2 due to the corrosion. So the friction coefficient at acid and alkali Hank's solution is higher than those at the neutral solution and ambient air condition. Generally speaking, the friction coefficient between the bone and NiTi SMAs tend to be stable with the increasing amplitude at all test conditions. It is because that the surface was oxidized to restrain the forming of wear debris and the further development of fretting scars. Although the length and width of the wear scars in simulation body fluid are smaller than that at ambient air condition, the surface of NiTi SMAs damaged is characterized by deep scratches with debris particles within the contact area. Fretting regime of NiTi/bones pairs exhibits the mixed regime at ambient air condition and the slip regime in the Hank's solution.
会议录	INTERNATIONAL CONFERENCE ON SMART MATERIALS AND NANOTECHNOLOGY IN ENGINEERING, PTS 1-3
会议录出版者	SPIE-INT SOC OPTICAL ENGINEERING
会议录出版地	1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
语种	英语
WOS研究方向	Engineering ; Science & Technology - Other Topics ; Materials Science ; Optics
WOS记录号	WOS:000254186300106
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/38200]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Gansu Adv Non Ferrous Met Mat, Lanzhou 730050, Peoples R China; 2.Lanzhou Seemine Shape Memory Alloy Co Ltd, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Yin, Y.,Xu, Y. T.,Xia, T. D.,et al. Fretting behavior of NiTi shape memory alloy against long bone in the imitated human physiological solution[C]. 见:.