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题名: Phase Transformation and Lattice Parameter Changes of Non-trivalent Rare Earth-Doped YSZ as a Function of Temperature
作者: Jiang, SL;  Huang, X;  He, Z;  Buyers, A
发表日期: 2018-5-1
摘要: To examine the effect of doping/co-doping on high-temperature phase compositions of YSZ, stand-alone YSZ and CeO2 and Nb2O5 co-doped YSZ samples were prepared using mechanical alloy and high-temperature sintering. XRD analysis was performed on these samples from room temperature to 1100 A degrees C. The results show that the structure for the co-doped samples tends to be thermally stable when the test temperature is higher than a critical value. Monoclinic phase was dominant in Nb2O5 co-doped YSZ at temperatures lower than 600 A degrees C, while for the YSZ and CeO2 co-doped YSZ, cubic/tetragonal phase was dominant in the whole test temperature range. The lattice parameters for all the samples increase with increasing test temperature generally. The lattice parameters for the two non-trivalent rare earth oxides co-doped YSZ show that the lattice parameter a for the cubic phase of the Ce4+ co-doped YSZ is consistently greater than that of 7YSZ which is related to the presence of larger radius of Ce4+ in the matrix. The lattice parameters a, b, c for the monoclinic phase of Ce4+ co-doped YSZ are much closer to each other than that of the Nb5+ co-doped YSZ, indicating the former has better tendency to form cubic/tetragonal phase, which is desired for vast engineering applications.
刊名: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Jiang, SL,Huang, X,He, Z,et al. Phase Transformation And Lattice Parameter Changes Of Non-trivalent Rare Earth-doped Ysz As A Function Of Temperature[J]. Journal Of Materials Engineering And Performance,2018,27(5):2263-2270.

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