TY - JOUR
T1 - Influence of Gd2O3 and Yb2O3 Co-doping on phase stability, thermo-physical properties and sintering of 8YSZ
AU - Zhang, Yanli
AU - Guo, Lei
AU - Yang, Yongping
AU - Guo, Hongbo
AU - Zhang, Hongju
AU - Gong, Shengkai
PY - 2012/12
Y1 - 2012/12
N2 - The role of multicomponent rare earth oxides in phase stability, thermo-physical properties and sintering for ZrO2-based thermal barrier coatings (TBCs) materials is investigated. 8YSZ co-doped with 3 mol(Gd2O3 and 3 mol Yb2O3 (GYb-YSZ) powders are synthesized by solid state reaction for 24 h at various temperatures. As temperature increases, stabilizers are dissolved into zirconia matrix gradually. Synthesized at 1 500 °C, GYb-YSZ is basically composed of cubic phase. GYb-YSZ exhibits excellent phase stability and sinters lower than 8YSZ by nearly three times. The thermal conductivity of GYb-YSZ is much lower than that of 8YSZ, and the thermal expansion coefficient of GYb-YSZ is comparable to that of 8YSZ. The influence of Gd2O3 and Yb2O3 co-doping on phase stability, thermal conductivity and sintering of 8YSZ is discussed.
AB - The role of multicomponent rare earth oxides in phase stability, thermo-physical properties and sintering for ZrO2-based thermal barrier coatings (TBCs) materials is investigated. 8YSZ co-doped with 3 mol(Gd2O3 and 3 mol Yb2O3 (GYb-YSZ) powders are synthesized by solid state reaction for 24 h at various temperatures. As temperature increases, stabilizers are dissolved into zirconia matrix gradually. Synthesized at 1 500 °C, GYb-YSZ is basically composed of cubic phase. GYb-YSZ exhibits excellent phase stability and sinters lower than 8YSZ by nearly three times. The thermal conductivity of GYb-YSZ is much lower than that of 8YSZ, and the thermal expansion coefficient of GYb-YSZ is comparable to that of 8YSZ. The influence of Gd2O3 and Yb2O3 co-doping on phase stability, thermal conductivity and sintering of 8YSZ is discussed.
KW - GdO and Yb O co-doped 8YSZ (GYb-YSZ)
KW - phase stability
KW - sintering
KW - thermal barrier coatings (TBCs)
KW - thermo-physical properties
UR - https://www.scopus.com/pages/publications/84869392946
U2 - 10.1016/S1000-9361(11)60466-4
DO - 10.1016/S1000-9361(11)60466-4
M3 - 文章
AN - SCOPUS:84869392946
SN - 1000-9361
VL - 25
SP - 948
EP - 953
JO - Chinese Journal of Aeronautics
JF - Chinese Journal of Aeronautics
IS - 6
ER -