Nano-indentation of hybrid silica coatings on surgical grade stainless steel

被引：23

作者：

Ballarre, Josefina ^{[1
,2
]}

Lopez, Damian A. ^{[1
]}

Cavalieri, Ana L. ^{[2
]}

机构：

[1] UNMdP, CONICET, Corros Div,Mat Sci & Technol INTEMA, Inst Res, Mar Del Plata, Argentina

[2] UNMdP, CONICET, Div Ceram, Struct Matter Lab,Mat Sci & Technol Res Inst INTE, Mar Del Plata, Argentina

来源：

THIN SOLID FILMS | 2008年 / 516卷 / 06期

关键词：

hybrid coating; sol-gel; mechanical properties; silicon oxide; nano-indentation;

D O I：

10.1016/j.tsf.2007.07.186

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hybrid silica-based coatings with tetraethoxysilane (TEOS), methyltrietoxysilane (MTES), hydroxyethyl-methacrylate (HEMA) and methacrylopropyl-trimethoxysilane (gamma MPS) as precursors, were employed to improve the performance of stainless steel used as orthopaedic material. Mechanical properties of the films, such as Young's modulus and hardness, were studied using the load and depth sensing indentation technique known as nano-indentation. The elastic/plastic and creep behaviours were also analyzed. Coatings with a high proportion of organic components (HEMA, gamma MPS) presented a more plastic response compared to the more vitreous coatings (containing only TEOS and MTES). They also showed the lowest Young's modulus and hardness. Therefore, the more vitreous coatings presented lower creep deformation that increased with the load applied. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1082 / 1087

页数：6

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