Abstract
In this paper the influence of thermal shock loadings on the phase composition and microstructure of ZrO2(Y2O3) and ZrO2(MgO) ceramics was studied. It was found that thermal shock strains were no effect on phase composition of ZrO2(Y2O3) ceramics. Reducing the concentration of high-temperature tetragonal t-ZrO2 and cubic c-ZrO2 modifications and rising the content of low-temperature monoclinic m-ZrO2 crystal system with increasing the number of thermal shock strains were observed. The values of region coherent X-ray scattering of ZrO2(Y2O3) ceramics didn't changed, while the crystallite size of ZrO2(MgO) ceramics decreased. The formation of block structure in all studied ceramics was observed, the sizes of the blocks formed in the ZrO2(Y2O3) and ZrO2(MgO) ceramics were slightly different. The formation of the blocks in ZrO2(Y2O3) ceramics occurred on the grain boundaries, while the crystallites in ZrO2(MgO) ceramics were crushed due to phase transformation.
| Original language | English |
|---|---|
| Article number | 012029 |
| Journal | IOP Conference Series: Materials Science and Engineering |
| Volume | 156 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 8 Nov 2016 |
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- Engineering(all)
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Effects of transient thermal shock loadings on the structure of zirconia ceramics. / Derkach, E. A.; Buyakova, S. P.; Kul'kov, Sergey Nikolaevich.
In: IOP Conference Series: Materials Science and Engineering, Vol. 156, No. 1, 012029, 08.11.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of transient thermal shock loadings on the structure of zirconia ceramics
AU - Derkach, E. A.
AU - Buyakova, S. P.
AU - Kul'kov, Sergey Nikolaevich
PY - 2016/11/8
Y1 - 2016/11/8
N2 - In this paper the influence of thermal shock loadings on the phase composition and microstructure of ZrO2(Y2O3) and ZrO2(MgO) ceramics was studied. It was found that thermal shock strains were no effect on phase composition of ZrO2(Y2O3) ceramics. Reducing the concentration of high-temperature tetragonal t-ZrO2 and cubic c-ZrO2 modifications and rising the content of low-temperature monoclinic m-ZrO2 crystal system with increasing the number of thermal shock strains were observed. The values of region coherent X-ray scattering of ZrO2(Y2O3) ceramics didn't changed, while the crystallite size of ZrO2(MgO) ceramics decreased. The formation of block structure in all studied ceramics was observed, the sizes of the blocks formed in the ZrO2(Y2O3) and ZrO2(MgO) ceramics were slightly different. The formation of the blocks in ZrO2(Y2O3) ceramics occurred on the grain boundaries, while the crystallites in ZrO2(MgO) ceramics were crushed due to phase transformation.
AB - In this paper the influence of thermal shock loadings on the phase composition and microstructure of ZrO2(Y2O3) and ZrO2(MgO) ceramics was studied. It was found that thermal shock strains were no effect on phase composition of ZrO2(Y2O3) ceramics. Reducing the concentration of high-temperature tetragonal t-ZrO2 and cubic c-ZrO2 modifications and rising the content of low-temperature monoclinic m-ZrO2 crystal system with increasing the number of thermal shock strains were observed. The values of region coherent X-ray scattering of ZrO2(Y2O3) ceramics didn't changed, while the crystallite size of ZrO2(MgO) ceramics decreased. The formation of block structure in all studied ceramics was observed, the sizes of the blocks formed in the ZrO2(Y2O3) and ZrO2(MgO) ceramics were slightly different. The formation of the blocks in ZrO2(Y2O3) ceramics occurred on the grain boundaries, while the crystallites in ZrO2(MgO) ceramics were crushed due to phase transformation.
UR - http://www.scopus.com/inward/record.url?scp=85000894025&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85000894025&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/156/1/012029
DO - 10.1088/1757-899X/156/1/012029
M3 - Article
VL - 156
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012029
ER -