摘要
通过材料组分设计，采用ＧＰＳ与ＨＰ烧结工艺，制备α′－β′Ｓｉａｌｏｎ与β′－Ｓｉａｌｏｎ－１２Ｈ两种复相陶瓷。从显微结构观察，长柱状β晶体和纤维状１２Ｈ（ＡｌＮ多型体）显示了原位自补强作用。介绍了这两种复相陶瓷的制备和显微结构及力学性能之间的关系。
Abstract Based on the phase compositional design, two types of multiphase sialon ceramics, α′ β′-sialon and β′-sialon-12H, were processed by gas pressure sintering (GPS) and hot-pressing (HP) techniques. Microstuctural studies revealed that the in-situ toughening was exhibited by the elongted β Si3N4 crystals and the aciculate 12H (AIN Polypoid) intersected with each other. The effects of processing parameters on the mechanical properties and microstructures of these two multiphase sialon ceramic materials are described in some detail.
出处
《机械工程材料》
CAS
CSCD
1996年第3期31-32,共2页
Materials For Mechanical Engineering
