摘要
采用高温固相合成法制备了一系列Ti_(x)Sc_(0.08)Ce_(0.08)Zr_(0.84)O_(1.96+2x)(x=0.01、0.03、0.05、0.07、0.09)(TSCZ)陶瓷材料。利用XRD分析该材料的物相结构及在1500℃不同合成时间(12、50、100 h)下的相稳定性,用热膨胀仪测量热膨胀系数,用维氏硬度计分析力学性能。结果表明,制备的TSCZ材料具有亚稳态四方相(t′)。经过1500℃高温热处理100 h后,材料仍然保持稳定的t′结构。随着TiO_(2)掺量的增加,该材料的热膨胀系数、硬度、断裂韧性和抗烧结性能降低,杨氏模量增加。
A series of Ti_(x)Sc_(0.08)Ce_(0.08)Zr_(0.84)O_(1.96+2x)(x=0.01,0.03,0.05,0.07,0.09)(TSCZ) ceramic materials are prepared by high temperature solid state syntheses.The phase structure and phase stability at 1500℃for 12 h,50 h,100 h are analyzed by XRD,the thermal expansion coefficient of the material is measured by thermal dilatometer,and the mechanical performance is analyzed by vickers hardness tester.The results show that TSCZ materials with metastable tetragonal phase(t′)structure are successfully prepared.After 100 h heat treatment at 1500℃,the materials still maintain a stable t′structure.With the increase of TiO_(2) content,the thermal expansion coefficient,hardness,fracture toughness and sintering resistance are declined,and the Young’s modulus are increased.
作者
王迎辉
陈梦迪
李昌治
王进双
井强山
WANG Yinghui;CHEN Mengdi;LI Changzhi;WANG Jinshuang;JING Qiangshan(Henan Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan,Xinyang Normal University,Xinyang 464000,China)
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2022年第3期381-386,共6页
Journal of Xinyang Normal University(Natural Science Edition)
基金
国家自然科学基金项目(51902279)
信阳师范学院“南湖学者奖励计划”青年项目。
关键词
高温固相合成
TiO_(2)掺量
热物理性能
力学性能
high temperature solid state syntheses
TiO_(2)content
thermophysical properties
mechanical performance
