作者：Wei Zhang,Gan Shi,Zhiyuan Feng
作者單位：Sinosteel Luoyang Institute of Refractories Research Company
會議錄名稱：中國材料大會2012
出版年：2012-07-13
起頁：101-105
止頁：
總頁數：5
館藏號：
分類號：TQ175.71
語種：中文
會議名稱：中國材料大會2012
會議地點：中國山西太原
會議時間：2012-07-13
會議主辦者：中國材料研究學會
關鍵詞：Magnesium aluminate spinel;Crystal;Sintering performance;Microstructure
內容簡介Magnesium aluminate spinel specimens with various Al2O3 content were prepared. Sintering performance and microstructure of different kinds of MgAl2O4 spinel were studied. It is found that the sintering of materials becomes more difficult with the increase in their Al2O3 contents. Corundum begins to precipitate from the magnesium aluminate spinel with 85wt% Al2O3 at 1400℃. However, with further increase in the sintering temperature, the corundum dissolves into magnesium aluminate spinel（above 1600℃）. The precipitation and solid solution of corundum hinder the sintering of materials. In alumina-rich spinel, if the content of Al2O3 in alumina-rich spinel materials is more and the content of CA6 is also more. At the same time CA6 crystal is bigger in the alumina-rich spinel.
所需耐材幣：0
