TY - JOUR
T1 - Hydrothermal-aging-induced lattice distortion in yttria-stabilized zirconia using EBSD technique
AU - Tsai, Yi Yun
AU - Lee, Tzer Min
AU - Kuo, Jui Chao
N1 - Funding Information:
The authors would gratefully like to thank the Ministry of Science and Technology for supporting the fund in the project under MOST 108-2221-E-006-135 and Mr. J.M. Chen to perform Bruker D8 DISCOVER Plus TXS-HE by in the Instrument Center of NCKU.
Publisher Copyright:
© 2021
PY - 2021/6
Y1 - 2021/6
N2 - The destabilization problem is of importance in the application of yttria-stabilized zirconia (YSZ) bio-ceramic in the oral environment due to phase transformation between tetragonal to monoclinic. Thus, in this study, the lattice distortion induced by hydrothermal aging in yttria-stabilized zirconia (YSZ) was investigated, in which YSZ specimens were subjected to hydrothermal-aging treatment for 0–48 h. The Kikuchi-band based method was employed to calculate the lattice distortion after phase transformation and the results from EBSD were compared with these obtained by X-ray diffraction (XRD). Both measurement methods showed a similar tendency of the lattice change in the a- and c- axes. EBSD results showed that the strain rates were 7.98 % and −5.03 % at the a- and c-axes, respectively. A significant decrease in the c/a ratio from 1.429 to 1.257 for the tetragonal matrix after 48 h aging is observed, which indicated Kikuchi-band based method using EBSD technique can successfully determine the local strain in tetragonal matrices.
AB - The destabilization problem is of importance in the application of yttria-stabilized zirconia (YSZ) bio-ceramic in the oral environment due to phase transformation between tetragonal to monoclinic. Thus, in this study, the lattice distortion induced by hydrothermal aging in yttria-stabilized zirconia (YSZ) was investigated, in which YSZ specimens were subjected to hydrothermal-aging treatment for 0–48 h. The Kikuchi-band based method was employed to calculate the lattice distortion after phase transformation and the results from EBSD were compared with these obtained by X-ray diffraction (XRD). Both measurement methods showed a similar tendency of the lattice change in the a- and c- axes. EBSD results showed that the strain rates were 7.98 % and −5.03 % at the a- and c-axes, respectively. A significant decrease in the c/a ratio from 1.429 to 1.257 for the tetragonal matrix after 48 h aging is observed, which indicated Kikuchi-band based method using EBSD technique can successfully determine the local strain in tetragonal matrices.
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U2 - 10.1016/j.micron.2021.103053
DO - 10.1016/j.micron.2021.103053
M3 - Article
C2 - 33714065
AN - SCOPUS:85102275698
SN - 0968-4328
VL - 145
JO - Micron and Microscopica Acta
JF - Micron and Microscopica Acta
M1 - 103053
ER -