Improved Mechanical Behavior and Plastic Deformation Capability of Ultrafine Grain Alumina Ceramics

被引：20

作者：

Huang, Lin ^{[1
]}

Yao, Wenlong ^{[1
]}

Mukherjee, Amiya K. ^{[1
]}

Schoenung, Julie M. ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2012年 / 95卷 / 01期

关键词：

MATERIAL-REMOVAL; SCRATCH RESISTANCE; FRICTION BEHAVIOR; INDUCED DAMAGE; SIZE; NANOINDENTATION; WEAR; MICROSTRUCTURE; NANOTRIBOLOGY; DEPENDENCE;

D O I：

10.1111/j.1551-2916.2011.04951.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The nanoindentation and nanoscratch behavior under ramp loading conditions of three dense bulk alumina ceramic samples with average grain size regimes of similar to 290 similar to nm, 750 similar to nm, and 1.3 similar to mu m, respectively, has been investigated using a nanoindenter XPS system in indentation and scratch modes. The mechanical behavior, including hardness from nanoindentation tests, scratch hardness, scratch resistance, and coefficient of friction from nanoscratch tests, can be improved with grain refinement. Moreover, the surface roughness of the scratch grooves and the distinct morphologies of the nanoscratch debris from each sample reveal that alumina ceramic samples with ultrafine grain size exhibit an increase in plastic deformation capability at the nano- and micro-scale.

引用

页码：379 / 385

页数：7

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