作者：Honggang Sun,Pengtao Li,Shuangzhi Yan,Gang Wang,等
作者單位：Sinosteel Luoyang Institute of Refractories Research Co., Ltd.
會議錄名稱：中國材料大會2012
出版年：2012-07-13
起頁：106-111
止頁：
總頁數：6
館藏號：
分類號：TQ175.1
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：Al2O3-Cr2O3 refractories;Particle size;Microstructure;Pore size distribution
內容簡介The microstructure of Al2O3-Cr2O3 refractories is an important factor to affect its high temperature performance. The Al2O3-Cr2O3 green bodies were prepared by hot pressing using aluminum oxide and Cr2O3 powder mixture by adding a binder. And then the specimens were sintered at 1650℃ for 4h in the electric muffle furnace. Properties of specimens with different species of Al2O3 powders were studied, including α-Al2O3 powder, ρ-Al2O3 powder, and fused corundum powder. Moreover, three sizes of α-Al2O3 powder （D 50 =0.8 μm, 1.4 μm, 4.0 μm） were used as additive. Properties of specimens, including apparent porosity, bulk density, cold modulus of rupture, pore size distribution were tested. The morphology of sintered specimens was analyzed by the Scanning Electron Microscope. The results showed that the specimens adding α-Al2O3 powder had the better properties since α-Al2O3 powder has higher sintering activity, and it was more efficient for Al2O3 -Cr2O3 solid solution.
所需耐材幣：0
