MgO-CeO₂烧结助剂对常压烧结氮化硅陶瓷致密化和性能的影响

来源期刊：中国有色金属学报1996年第3期

论文作者：杨海涛 黄培云 徐润泽

文章页码：94 - 98

关键词：Si₃N₄ 烧结 致密化

Key words：Si₃N₄　sintering　densification

摘    要：系统研究了MgO-CeO₂烧结助剂对常压烧结氮化硅陶瓷致密化过程及其性能的影响，发现MgO-CeO₂是一种非常有效的烧结助剂，其致密化效果比单独用MgO或CeO₂要好得多，常压烧结的Si₃N₄-MgO-CeO₂陶瓷，相对密度为98.5%，室温强度可达948 MPa。

Abstract: An investigation of the pressureless sintering of Si₃N₄ with MgO-CeO₂ revealed that MgO-CeO₂is a much more effective sintering aid for silicon nitride than either MgO or CeO₂. The amount of MgO-CeO₂ and MgO/CeO₂mass ratio have strong influence on the densification behaviour and mechanical properties of the sintered materials. The silicon nitride pressurelessly sintered with MgO-CeO₂ retains a relative density of 98.5% and a bending strength of 948 MPa.