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运用共沉淀法制备Sm2Zr2O7原料粉末,利用放电等离子烧结技术(SPS)制备锆酸钐质量分数分别为25%、50%、75%的Sm2Zr2O7-ZrB2/SiC复合材料,对材料进行相成分、微观形貌、力学性能测试表征。结果表明,采用SPS在1600℃下可制备出高致密度的Sm2Zr2O7-ZrB2/SiC三相复合材料。随着复合材料中Sm2Zr2O7含量的增加力学性能显著降低,主要是Sm2Zr2O7材料本身的力学性能较低,且烧结过程中易形成连续相以及烧结应力共同作用的结果。
The Sm2Zr2O7-ZrB2 / SiC composites were prepared by coprecipitation method and Sm2Zr2O7-ZrB2 / SiC composites with 25%, 50% and 75% zirconium samarate were prepared by spark plasma sintering (SPS) Appearance, mechanical properties test characterization. The results show that high density of Sm2Zr2O7-ZrB2 / SiC three-phase composites can be prepared by SPS at 1600 ℃. With the increase of Sm2Zr2O7 content in the composites, the mechanical properties of Sm2Zr2O7 composites decrease significantly, which is mainly due to the lower mechanical properties of Sm2Zr2O7 itself and the continuous formation of sintering phases and the sintering stress.