Surface characteristics and corrosion behaviour of WE43 magnesium alloy coated by SiC film

被引：76

作者：

Li, M. ^{[1
]}

Cheng, Y. ^{[1
]}

Zheng, Y. F. ^{[1
,2
]}

Zhang, X. ^{[1
]}

Xi, T. F. ^{[1
]}

Wei, S. C. ^{[1
,3
,4
]}

机构：

[1] Peking Univ, Acad Adv Interdisciplinary Studies, Ctr Biomed Mat & Tissue Engn, Beijing 100871, Peoples R China

[2] Peking Univ, Coll Engn, Dept Adv Mat & Nanotechnol, Beijing 100871, Peoples R China

[3] Peking Univ, Sch Stomatol, Dept Oral & Maxillofacial Surg, Beijing 100871, Peoples R China

[4] Peking Univ, Hosp Stomatol, Dept Oral & Maxillofacial Surg, Beijing 100871, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 07期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

WE43; alloy; SiC film; PECVD; Corrosion; Hemocompatibility; AMORPHOUS-SILICON CARBIDE; SIMULATED BODY-FLUID; CHEMICAL-VAPOR-DEPOSITION; CORONARY-ARTERIES; INTRAVASCULAR ULTRASOUND; BIOMEDICAL APPLICATIONS; MG; PLATELET; STENTS; PECVD;

D O I：

10.1016/j.apsusc.2011.11.040

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Amorphous SiC film has been successfully fabricated on the surface of WE43 magnesium alloy by plasma enhanced chemical vapour deposition (PECVD) technique. The microstructure and elemental composition were analyzed by transmission electron microscopy (TEM), glancing angle X-ray diffraction (GAXRD) and X-ray photoelectron spectroscopy (XPS), respectively. The immersion test indicated that SiC film could efficiently slow down the degradation rate of WE43 alloy in simulated body fluid (SBF) at 37 +/- 1 degrees C. The indirect toxicity experiment was conducted using L929 cell line and the results showed that the extraction medium of SiC coated WE43 alloys exhibited no inhibitory effect on L929 cell growth. The in vitro hemocompatibility of the samples was investigated by hemolysis test and blood platelets adhesion test, and it was found that the hemolysis rate of the coated WE43 alloy decreased greatly, and the platelets attached on the SiC film were slightly activated with a round shape. It could be concluded that SiC film prepared by PECVD made WE43 alloy more appropriate to biomedical application. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：3074 / 3081

页数：8

共 53 条

[1]

AN EXAMINATION OF SOME FACTORS WHICH INFLUENCE THE STABILITY OF IN-VITRO PLATELET RESPONSES [J].