| Summary: | 碩士 === 國立臺北科技大學 === 材料科學與工程研究所 === 107 === In this study, Ce0.8Sm0.2O1.9 (SDC20), Ce0.8Sm0.15Ca0.025Sr0.025O1.875 (SSCDC) and Ce0.6La0.4O1.8 (LDC20) were synthesized by a sol–gel method. The calcined powders were followed by XRD, Lazer light scattering particle analyzer and TEM. The result showed that fluorite–type ceria–based solid solutions. The particle size were fluorite–type ceria–based solid solutions; the particle sizes were 0.685, 1.03 and 0.822μm, respectively; the grain size were 46, 56, and 35 nm. The sintering conditions were divide by isothermal and non-isothermal. The sintering behaviour of ceria powder was investigated.It showed SSCDC has highest densification, and the diensification activation energy was 436 kJ/mol
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