摘要
本文研究了不同烧结温度成分为１０ｍｏｌ％ＣｅＯ２－１ｍｏｌ％Ｙ２Ｏ３－ＺｒＯ２陶瓷材料（Ｃｅ－Ｙ－ＴＺＰ）经高温时效后力学性能的变化规律。结果表明，时效时间对材料的强度与韧性有较大影响，大约在２４ｈ左右，σ３ｂ、ＫＩＣ达到峰值。配合Ｘ射线分析，认为产生上述现象的原因主要是时效导致材料基体产生共格畸变所致。此外，断口形貌ＳＥＭ观察表明，断口局部出现了准解理断裂特征。
The mechanical properties of Ce-Y-TZP ceramics (10 mol%CeO2-1 mol% Y2O3-ZrO2)sintered at various temperatures were investigated. It has been found that the time of annealing treatment can affect its σ3b、KIC and the maximum value which can be obtained after 24 hours annealing. The XRD result show that the spinodal structure (or G. P zone)appears after annealing. Quasi-cleavage fracture can be found in the partial area through SEM analysis.
出处
《材料科学与工艺》
CAS
CSCD
北大核心
1995年第3期29-32,共4页
Materials Science and Technology
关键词
陶瓷
高温时效
力学性能
ceramics
high temperature aging
mechanical properties
