研究了保温时间对气压烧结(GPS)氮化硅陶瓷晶界相及力学性能的影响.研究发现,由于晶界相中的氧含量随保温时间的延长先增加然后明显降低,导致烧结体中晶界相的总量和致密化程度随保温时间的增加有一最大值.在本文所研究的保温时间范围内,烧结体的室温强度随保温时间的增加而升高.
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