Nanoindentation on the doubler plane of KDP single crystal

The nanohardness is from 1.44 to 2.61 GPa, the Vickers hardness is from 127 to 252 Vickers, and elastic modulus is from 52 to 123 GPa by the nanoindentation experiments on the doubler plane of KDP crystal. An indentation size effect is observed on the doubler plane in the test as the nanohardness an...

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Bibliographic Details
Published in:Journal of semiconductors 2013-03, Vol.34 (3), p.21-25
Main Authors: Guo, Xiaoguang, Zhang, Xiaoji, Tang, Xianzhao, Guo, Dongming, Gao, Hang, Teng, Xiaoji
Format: Article
Language:chi ; eng
Subjects:
Anisotropy
crystal
doubler
effect
Elastic deformation
Elastic modulus
KDP
Modulus of elasticity
Nanohardness
Nanoindentation
plane
Planes
Semiconductors
size
the
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Summary:The nanohardness is from 1.44 to 2.61 GPa, the Vickers hardness is from 127 to 252 Vickers, and elastic modulus is from 52 to 123 GPa by the nanoindentation experiments on the doubler plane of KDP crystal. An indentation size effect is observed on the doubler plane in the test as the nanohardness and elastic modulus decreases with the increase of the maximum load. Slippage is identified as the major mode of plastic deformation, and pop-in events are attributed to the initiation of slippage. And the variation of unloading curve end is the result of stick effects between the indenter and the contact surface. The depth of the elastic deformation, which is between 40 and 75 nm, is responsible for the elastic deformation. The doubler plane of KDP crystal has anisotropy, and the relative anisotropy of nanohardness is 8.2% and the relative anisotropy of elastic modulus is 8.0%.
ISSN:1674-4926
DOI:10.1088/1674-4926/34/3/034001