TY - JOUR
T1 - Phase Structure and Phase Stability Studies of La-Y Co-doped HfO2Materials and Coatings
AU - Zhao, Hanqi
AU - Fan, Jianbin
AU - Wang, Quansheng
N1 - Publisher Copyright:
© The Authors, published by EDP Sciences.
PY - 2023/7/31
Y1 - 2023/7/31
N2 - In this study, The 30 mol% La-Y co-doped HfO2 was prepared by solid-phase synthesis and the effect of the doping content of La element on the phase structure and high temperature phase stability was investigated by XRD. The results show that LaYSH is pyrochlore p-phase + fluorite c-phase when the doping content of La element is 6 and 9 mol%, and a single fluorite c-phase when the doping content is 0-3 mol%. After sintering at 1600 C for 50 h, 0, 1 and 2 LaYSH remained as a single fluorite c-phase, 3 LaYSH produced 2.54 wt% pyrochlore p-phase, and the pyrochlore p-phase content in 6 and 9 LaYSH decreased to varying degrees. The prepared 0, 1 and 2 LaYSH coatings all had a single c-phase and remained unchanged in the single c-phase when sintered at 1600 C for 50 hours, demonstrating their good high temperature phase stability.
AB - In this study, The 30 mol% La-Y co-doped HfO2 was prepared by solid-phase synthesis and the effect of the doping content of La element on the phase structure and high temperature phase stability was investigated by XRD. The results show that LaYSH is pyrochlore p-phase + fluorite c-phase when the doping content of La element is 6 and 9 mol%, and a single fluorite c-phase when the doping content is 0-3 mol%. After sintering at 1600 C for 50 h, 0, 1 and 2 LaYSH remained as a single fluorite c-phase, 3 LaYSH produced 2.54 wt% pyrochlore p-phase, and the pyrochlore p-phase content in 6 and 9 LaYSH decreased to varying degrees. The prepared 0, 1 and 2 LaYSH coatings all had a single c-phase and remained unchanged in the single c-phase when sintered at 1600 C for 50 hours, demonstrating their good high temperature phase stability.
UR - http://www.scopus.com/inward/record.url?scp=85170362538&partnerID=8YFLogxK
U2 - 10.1051/e3sconf/202340601028
DO - 10.1051/e3sconf/202340601028
M3 - Conference article
AN - SCOPUS:85170362538
SN - 2267-1242
VL - 406
JO - E3S Web of Conferences
JF - E3S Web of Conferences
M1 - 01028
T2 - 9th International Conference on Energy Materials and Environment Engineering, ICEMEE 2023
Y2 - 8 June 2023 through 10 June 2023
ER -