Tribological performances of symmetrically micro-textured Ti-6Al-4V alloy for hip joint

被引：27

作者：

Pratap, Tej ^{[1
,2
]}

Patra, Karali ^{[2
]}

机构：

[1] Motilal Nehru Natl Inst Technol Allahabad, Dept Mech Engn, Prayagraj 211004, India

[2] Indian Inst Technol Patna, Microfabricat Lab, Dept Mech Engn, Bihta 801103, India

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2020年 / 182卷

关键词：

Tribology; Symmetrical micro-texture; Hip joint; Ti-6Al-4V; Coefficient of friction; ENGINEERED SURFACES; WETTABILITY; TITANIUM; FABRICATION; FRICTION; IMPLANT; SIZE;

D O I：

10.1016/j.ijmecsci.2020.105736

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study investigates the tribological performances, i.e., reduction in coefficients of friction (COF), and surface wear of symmetrically micro-textured Ti-6Al-4V for the application of metal-on-metal hip joint. Symmetrical configurations of micro-textures, namely, micro-dimple with parallel (PD) and staggered (SD) arrangements, and micro grid (MG) of varying geometry and texture overlapping, were fabricated by ball-end micromilling and its bio-tribological performances were related to micro-texture configuration, geometry, overlapping, microhardness, and wettability. Micro grid with an intermediate pitch and highest depth shows the lowest COF, among others. For PD and SD, COF was almost independent of texture overlapping; whereas, it decreases for MG with overlapping of up to 51%. It was observed that the enhanced wetting and microhardness combinedly contribute to the reduction in COF.

引用

页数：16

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