【摘要】 初步研究了氧化镁对原位烧结含锆莫来石陶瓷性能的影响,经XRD分析表明:由于氧化镁的引入,在材料烧结过程中,有部分镁铝尖晶石的形成,同时在原位状态下也能形成部分Mg稳定的ZrO2,这对于形成氧化锆/镁铝尖晶石/莫来石热梯度晶相组成以减缓热应力十分有利,而且随着氧化镁加入量的增大,镁铝尖晶石、四方相氧化锆形成的量增多;并研究了材料抗热震系数达到最佳时的氧化镁加入量。更多还原

【Abstract】 In this paper the study on effect of magnesia to ZTM by reactive sintering in situ has been initiatively proceeded,Through XRD atlas the result indicate that because of magnesia has been indrafted into green body,during sintering process of materials spinel can be generated,at the same time partial stabilize zirconia by magnesia appeared in green body,which is benefit to generate thermal gradient compositions including zirconia、spinel and mullite,which can slow up thermal stress of system.On the other side as the quantity of magnesia increasing,spinel and tetragonal zirconia increased.And optimal quantity of magnesia has been researched when materials owned the optimal thermal shock resistance coefficient.更多还原