2O3和TiO2添加量对糖心产精国品免费入口*完整版制备MgO基陶瓷性能的影响(Effect of Al2O3 and TiO2 Addition Amount on Properties of MgO-based Ceramics by Coprecipitation Method)">
2O3和TiO2前驱体包覆MgO颗粒,并在1 450℃保温2 h得到MgO基陶瓷,研究了Al2O3和TiO2添加量对陶瓷物相组成、糖心产精国品免费入口*完整版和抗热震性能的影响。结果表明:添加Al2O3后,陶瓷的主要物相为方镁石相和MgAl2O4相,随Al2O3添加量的增加,MgAl2O4相含量增多,线收缩率和热震次数均先增后降,体积密度则增大;添加TiO2后,陶瓷的主要物相为方镁石相、Mg2TiO4相和MgTiO3相,随TiO2添加量的增加,Mg2TiO4和MgTiO3相含量增多,线收缩率和体积密度均先增后降,热震次数则先增加后保持稳定;当Al2O3和TiO2的质量分数分别为6%,4%时,陶瓷的糖心产精国品免费入口*完整版和抗热震性能均最佳。">
MgO particles coated with Al2O3
and TiO2
precursors, respectively, were prepared by 糖心产精国品免费入口*完整版 and sintered at 1 450℃ for 2 h, and then the MgO-based ceramics were obtained. The effects of the addition amount of Al2O3
and TiO2
on the phase composition, 糖心产精国品免费入口*完整版 and 糖心产精国品免费入口*完整版of the ceramics were investigated. The results show that the ceramics added with Al2O3
mainly consisted of periclase and MgAl2O4
phases. With increasing Al2O3
addition amount, the MgAl2O4
phase content increased, the linear shrinkage rate and the number of thermal shock cycles first increased and then decreased, and the bulk density increased. The ceramics added with TiO2
was mainly composed of periclase, Mg2TiO4
and MgTiO3
phases. With increasing TiO2
addition amount, the content of Mg2TiO4
phase and MgTiO3
phase increased, the linear shrinkage rate and bulk density first increased and then decreased, and the number of thermal shock cycles first increased and then remained stable. When the mass fractions of Al2O3
and TiO2
were 6%, 4%, respectively, both the 糖心产精国品免费入口*完整版 and 糖心产精国品免费入口*完整版of the ceramics were the best.
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