Hydrothermal-aging-induced lattice distortion in yttria-stabilized zirconia using EBSD technique
| Autor: | Yi Yun Tsai, Tzer Min Lee, Jui Chao Kuo |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science General Physics and Astronomy 02 engineering and technology Cell Biology 021001 nanoscience & nanotechnology 01 natural sciences Hydrothermal circulation Tetragonal crystal system Structural Biology Phase (matter) 0103 physical sciences General Materials Science Cubic zirconia Composite material 0210 nano-technology Kikuchi line Yttria-stabilized zirconia Monoclinic crystal system Electron backscatter diffraction |
| Zdroj: | Micron (Oxford, England : 1993). 145 |
| ISSN: | 1878-4291 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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