Next Article in Journal
Microstructure and Mechanical Properties of Carbon/Carbon Composites Infiltrated with Ti–6Al–4V Titanium Alloy
Previous Article in Journal
Quantitative Phase Analysis by X-ray Diffraction—Doping Methods and Applications
Open AccessArticle

Determination of the Mechanical Properties of PIN–PMN–PT Bulk Single Crystals by Nanoindentation

1
College of Science, Inner Mongolia University of Technology, Hohhot 010051, China
2
College of Arts and Sciences, Shanghai Maritime University, Shanghai 201306, China
3
Test Center, Inner Mongolia University of Technology, Hohhot 010051, China
4
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work and should be considered co-first author.
Crystals 2020, 10(1), 28; https://doi.org/10.3390/cryst10010028
Received: 24 November 2019 / Revised: 29 December 2019 / Accepted: 5 January 2020 / Published: 8 January 2020
The present study aimed to experimentally evaluate the mechanical properties of Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 (PIN–PMN–PT) bulk single crystals with different crystallographic directions using the nanoindentation technique. The loadindentation depth curves, elastic and plastic deformations, hardnesses, and Young’s moduli of [100]- and [110]-oriented 0.28PIN–0.43PMN–0.29PT bulk single crystals were investigated. Our results show that with an increase in the maximum indentation depth hmax, the plastic residual percentage increased for both the [100]- and the [110]-oriented single crystals. At each hmax, the plastic residual percentage of the [100]-oriented PIN–PMN–PT single crystals was less than that of the [110]-oriented PIN–PMN–PT single crystals. At hmax from 500 nm to 2000 nm, the plastic deformation was larger than the elastic deformation, and the plastic residual percentage was larger than 50% for both the [100]- and the [110]-oriented single crystals. This means that the plastic deformation dominated in the indentation process of PIN–PMN–PT single crystals. The indentation size effect on the hardness of the PIN–PMN–PT single crystals was apparent in the nanoindentation process. Both the hardness and the Young’s modulus of the [100]-PIN–PMN–PT single crystals were greater than those of the [110]-PIN–PMN–PT single crystals, which indicates that the PIN–PMN–PT single crystals had anisotropic mechanical characteristics. View Full-Text
Keywords: relaxor-based ferroelectric PIN–PMN–PT single crystal; nanoindentation; load–depth curves; elastic and plastic deformation; hardness; Young’s modulus relaxor-based ferroelectric PIN–PMN–PT single crystal; nanoindentation; load–depth curves; elastic and plastic deformation; hardness; Young’s modulus
Show Figures

Figure 1

MDPI and ACS Style

Zhang, W.; Li, J.; Xing, Y.; Lang, F.; Zhao, C.; Hou, X.; Yang, S.; Xu, G. Determination of the Mechanical Properties of PIN–PMN–PT Bulk Single Crystals by Nanoindentation. Crystals 2020, 10, 28.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop