Study on the corrosion and wear characteristics of magnesium alloy AZ91D in simulated body fluids

被引：23

作者：

Vignesh, R. Vaira ^{[1
]}

Padmanaban, R. ^{[1
]}

Govindaraju, M. ^{[1
]}

机构：

[1] Amrita Vishwa Vidyapeetham, Amrita Sch Engn, Dept Mech Engn, Coimbatore 641112, Tamil Nadu, India

来源：

BULLETIN OF MATERIALS SCIENCE | 2019年 / 43卷 / 01期

关键词：

Magnesium alloy; adhesive wear; corrosion; simulated-body fluid; radial-basis function; VITRO DEGRADATION BEHAVIOR; TRIBOLOGICAL BEHAVIOR; IN-VIVO; BIOCOMPATIBILITY; BIOMATERIALS; IMPLANTS;

D O I：

10.1007/s12034-019-1973-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bioimplants made of metallic materials induce a stress-shielding effect and delayed osteoblast activity during in-vivo experiments. Bioimplants also suffer corrosion, wear and combined effect of corrosion-wear during their service time. Bioimplants made of magnesium alloys result in a negligible stress shielding effect, owing to their similarity with bone's elastic modulus. However, the soft matrix of the magnesium alloy is susceptible to high-wear rates. In this study, magnesium alloy AZ91D is subjected to the corrosion test (immersion and electrochemical), adhesive wear and simultaneous corrosion-wear test to test the significance of the body fluid in the corrosion-wear rate of the bioimplants. The surface morphology, elemental composition and phase composition of the specimens are characterized using field emission scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction analytic techniques. The results indicate that the simulated-body fluid has a significant effect on the corrosion rate and corrosion-wear rate of the specimens.

引用

页数：12