Nanohardness and elastic anisotropy of ZrB2 crystals

被引：31
|
作者：
Csanadi, Tamas [1 ]
Grasso, Salvatore [2 ]
Kovalcikova, Alexandra [1 ]
Dusza, Jan [1 ,3 ]
Reece, Mike [2 ]
机构：
[1] Slovak Acad Sci, Inst Mat Res, Kosice 04353, Slovakia
[2] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England
[3] Obuda Univ, Donat Banki Fac Mech & Safety Engn, H-1081 Budapest, Hungary
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2016年 / 36卷 / 01期
基金：
英国工程与自然科学研究理事会;
关键词：
ZrB2; crystal; Nanoindentation; Hardness; Indentation modulus; Elastic anisotropy; SINGLE-CRYSTALS; INDENTATION EXPERIMENTS; MECHANICAL-PROPERTIES; ZIRCONIUM; HARDNESS; MICROSTRUCTURE; DEFORMATION; DIBORIDES; CERAMICS; MODULUS;
D O I：
10.1016/j.jeurceramsoc.2015.09.012
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：
Room temperature instrumented nano-indentation with a Berkovich tip was carried out on polycrystalline ZrB2. The orientation of the individual grains was mapped using electron backscattered diffraction. The anisotropy in properties was similar to 20% and similar to 7% for nanohardness and indentation modulus, respectively. The nanohardness decreased from basal towards prismatic orientation with a minimum at similar to 50-60 degrees and the indentation modulus increased with a maximum at similar to 70-80 degrees. The indentation modulus anisotropy, calculated by Vlassak-Nix model, shows similar tendency as the experimental values. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：239 / 242
页数：4
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