Indentation properties of plasma sprayed Al2O3-13% TiO2 nanocoatings

被引：35
|
作者：
Rodriguez, J. [1 ]
Rico, A. [1 ]
Otero, E. [1 ]
Rainforth, W. M. [2 ]
机构：
[1] Univ Rey Juan Carlos, Dept Ciencia & Ingn Mat, Madrid 28933, Spain
[2] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England
来源：
ACTA MATERIALIA | 2009年 / 57卷 / 11期
关键词：
Ceramic coatings; Plasma spraying; Nanoindentation; Nanostructure; ALUMINA-TITANIA COATINGS; MECHANICAL-PROPERTIES; WEAR-RESISTANCE; MICROSTRUCTURE; CERAMICS; BEHAVIOR; HARDNESS;
D O I：
10.1016/j.actamat.2009.03.020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Young's modulus and hardness were determined by depth sensing indentation in plasma sprayed Al2O3-13% TiO2 nanocoatings. Results were compared to conventional coatings and the relevance of the nanostructure was analyzed. An indentation size effect was observed. Data provided by indentation tests at different maximum loads were used to estimate size-independent hardness and elastic modulus. Enhanced properties were observed in the nanostructured coating compared to the conventional one. Partially melted zones in the nanocoating, which act as reinforcements in the ceramic matrix composite, are likely responsible for the enhancement. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：3148 / 3156
页数：9
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