Tribological behaviors of Ti–6Al–4V modified by chemical methods
文献类型：期刊论文
| 作者 | Liu WM(刘维民)
|
| 刊名 | Tribology International
 |
| 出版日期 | 2010 |
| 卷号 | 43页码:228-234 |
| ISSN号 | 0301-679X |
| 关键词 | Surface modification Chemical process Thin film Ti–6Al–4V Friction and wear |
| 通讯作者 | 张文光 |
| 中文摘要 | In order to improve the tribological properties of titanium-based implants, sodium hydroxide (NaOH),hydrogen peroxide (H2O2) solutions, sol–gel hydroxyapatite (HA) film, thermal treatment and combinedmethods of NaOH solution/HA film, H2O2 solution/HA film are used to modify the surfaces of Ti–6Al–4V(coded TC4). The chemical states of some typical elements in the modified surfaces were detected bymeans of X-ray photoelectron spectroscopy (XPS). The tribological properties of modified surfacessliding against an AISI52100 steel ball were evaluated on a reciprocating friction and wear tester. As theresults, complex surfaces with varied components are obtained. All the methods are effective inimproving the wear resistance of Ti–6Al–4V in different degrees. Among all, the surface modified by thecombined method of NaOH solution/HA film gives the best tribological performances. The frictioncoefficient is also greatly reduced by the modification of NaOH solution. The order of the wearresistance under 3N is as following: Ti–NaOH–HA4Ti–NaOH4Ti–HA4Ti–H2O2–HA4Ti–H2O24Ti–500; under 1N is Ti–HA, Ti–NaOH–HA4Ti–NaOH. For Ti–H2O2, a very low friction coefficientand long wear life over 2000 passes is obtained under 1N. SEM observation of the morphologies of wornsurfaces indicates that the wear of TC4 is characteristic of abrasive wear. Differently, abrasion, plasticdeformation and micro–crack dominate the wear of Ti–HA; slight abrasive wear dominate the wearmechanism of Ti–NaOH and microfracture and abrasive wear for Ti–NaOH–HA and Ti–H2O2–HA, whilethe sample modified by thermal treatment is characterized by sever fracture. The superior frictionreduction and wear resistance of HA films are greatly attributed to the slight plastic deformation of thefilm. NaOH solution is superior in improving the wear resistance and decreasing the friction coefficientunder relative higher load (3N) and H2O2 is helpful to reduce friction and wear under relatively lowerload (1N). Combined method of Ti–NaOH–HA is suggested to improve the wear resistance of Ti–6Al–4Vfor medial applications under fretting situations. |
| 学科主题 | 材料科学与物理化学 |
| 资助信息 | the National Natural Science Foundation of China (Grant no. 30300078) as well as Medical and Engineering (Science) Cross Research Fund of Shanghai Jiao Tong University (Grant no. YG2007MS17) |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2012-09-28 |
| 源URL | [http://210.77.64.217/handle/362003/1072]  |
| 专题 | 兰州化学物理研究所_固体润滑国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu WM. Tribological behaviors of Ti–6Al–4V modified by chemical methods[J]. Tribology International,2010,43:228-234. |
| APA | 刘维民.(2010).Tribological behaviors of Ti–6Al–4V modified by chemical methods.Tribology International,43,228-234. |
| MLA | 刘维民."Tribological behaviors of Ti–6Al–4V modified by chemical methods".Tribology International 43(2010):228-234. |
入库方式： OAI收割
来源：兰州化学物理研究所
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