Micromechanical analysis of effective properties of plasma sprayed alumina coatings

被引：4
|
作者：
Zhao, H [1 ]
Silberschmidt, VV [1 ]
机构：
[1] Univ Loughborough, Wolfson Sch Mech & Mfg Engn, Loughborough LE11 3TU, Leics, England
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 417卷 / 1-2期
关键词：
effective properties; ceramic coatings; microstructure;
D O I：
10.1016/j.msea.2005.10.059
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
With the use of an image analysis technique, microstructure of plasma sprayed alumina coatings is quantitatively characterised using such parameters as the size, shape and number (density) of microvoids and the porosity level in the coatings. A Monte-Carlo simulation approach is proposed to model the characterised microstructure of alumina coatings with various levels of porosity. Based on this approach, effective elastic properties of the coatings with low porosity (less than 10%) are calculated using an analytical method. The effect of microstructure on material properties is investigated quantitatively and qualitatively. The numerical results are compared with the data obtained from nanoindentation and bending tests. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：287 / 293
页数：7
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