Deformation and removal characteristics of LiTaO3 single crystals in nanoindentation and nanoscratch

He, Anshun, Huang, He and Zhou, Libo (2012) Deformation and removal characteristics of LiTaO3 single crystals in nanoindentation and nanoscratch. International Journal of Abrasive Technology, 5 3: 258-269. doi:10.1504/IJAT.2012.051036

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Author He, Anshun
Huang, He
Zhou, Libo
Title Deformation and removal characteristics of LiTaO3 single crystals in nanoindentation and nanoscratch
Formatted title
Deformation and removal characteristics of LiTaO3 single crystals in nanoindentation and nanoscratch
Journal name International Journal of Abrasive Technology   Check publisher's open access policy
ISSN 1752-2641
1752-265X
Publication date 2012-12
Sub-type Article (original research)
DOI 10.1504/IJAT.2012.051036
Volume 5
Issue 3
Start page 258
End page 269
Total pages 12
Place of publication Geneva, Switzerland
Publisher Inderscience Publishers
Collection year 2013
Language eng
Formatted abstract
The deformation and removal characteristics of lithium tantalate (LiTaO3) single crystal were investigated using nanoindentation and nanoscratch. During indenting, the occurrence of pop–in was associated with the transition of deformation from elastic to elasto–plastic. Slip bands were observed on the indented surface when the indentation load reached 4 mN. Slipping was along the crystal orientation of [10 12]. Nanoscratch revealed that the threshold normal load for the transition of removal modes from ductile to brittle was 2.5 mN, corresponding to a scratch depth of 70 nm. Cracks were found along scratched grooves, which were likely induced by shearing. The removal rate in nanoscratch increased with the increase in normal load, but remained unchanged after the load was greater than 4 mN.
Keyword Lithium tantalate
LiTaO3
Nanoindentation
Removal
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2013 Collection
 
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Created: Mon, 07 Jan 2013, 15:28:01 EST by Professor Han Huang on behalf of School of Mechanical and Mining Engineering