Determining Young's modulus and Poisson's ratio of thin hard films

被引：6

作者：

Gong, M. F. ^{[1
]}

Qiao, S. R. ^{[2
]}

Mei, F. ^{[1
]}

机构：

[1] Zhanjiang Normal Univ, Inst Engn Mech, Zhanjiang 524048, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Thermostruct Composite Mat, Xian 710072, Peoples R China

来源：

SURFACE ENGINEERING | 2014年 / 30卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Tensile method; Alumina film; Young's modulus; Poisson's ratio; Electroplating; SPRAYED ALUMINA COATINGS; THERMAL BARRIER COATINGS; MECHANICAL-PROPERTIES; ELEVATED-TEMPERATURES; CORROSION-RESISTANCE; ELASTIC-MODULUS; NANOINDENTATION; MICROSTRUCTURE; MICROHARDNESS; STEEL;

D O I：

10.1179/1743294414Y.0000000288

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Young's modulus and Poisson's ratio for thin hard films are quite difficult to measure by traditional testing methods. A series of equations for Young's modulus and Poisson's ratio of films are successfully deduced. A novel tensile process is described in this paper. It concludes that this process is relatively easy to perform and allows reliable determination of elastic constants for thin hard films. The magnitude of Young's modulus and Poisson's ratio for electroplating hard alumina film were 106-166 GPa and 0.26-0.27 respectively. Moreover, Young's modulus of film is influenced by the film's thickness and porosity level. The theoretical analysis is logical and reasonable.

引用

页码：589 / 593

页数：5

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