The effect of three kinds of zircon raw materials on the sinterability and properties of porous zircon ceramics have been investigated.The results have shown that all the tested fired compacts are of high porosity,How...The effect of three kinds of zircon raw materials on the sinterability and properties of porous zircon ceramics have been investigated.The results have shown that all the tested fired compacts are of high porosity,However,the sintering process are different for different raw materials.The preferable selected raw materials for porous zircon ceramics were commercials zircon and quartz.展开更多
The grain-growth behavior of Al2O3 powder compacts with small contents(<5wt%) of various dopants was studied .The existence of tabular sub-grains were observed with all the following dopants: V2O5,MgO+Y2O3 and Na2B...The grain-growth behavior of Al2O3 powder compacts with small contents(<5wt%) of various dopants was studied .The existence of tabular sub-grains were observed with all the following dopants: V2O5,MgO+Y2O3 and Na2B4O7+V2O3+Pr.The tabular subgrains are defined as the abnormal grains longer than 30μm with an aspect ratio >50. They can be observed when the sintering temperature are higher than 1850℃。展开更多
文摘The effect of three kinds of zircon raw materials on the sinterability and properties of porous zircon ceramics have been investigated.The results have shown that all the tested fired compacts are of high porosity,However,the sintering process are different for different raw materials.The preferable selected raw materials for porous zircon ceramics were commercials zircon and quartz.
文摘The grain-growth behavior of Al2O3 powder compacts with small contents(<5wt%) of various dopants was studied .The existence of tabular sub-grains were observed with all the following dopants: V2O5,MgO+Y2O3 and Na2B4O7+V2O3+Pr.The tabular subgrains are defined as the abnormal grains longer than 30μm with an aspect ratio >50. They can be observed when the sintering temperature are higher than 1850℃。
