INITIAL SINTERING OF ALUMINA AND HEMATITE
INITIAL SINTERING OF ALUMINA AND HEMATITE
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DOI：
10.1111/j.1151-2916.1958.tb13519.x
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发表时间：
1958-01-01
影响因子：
3.9
通讯作者：
COBLE, RL
中科院分区：
文献类型：
--
作者：
COBLE, RL
实验测量的压缩Al2O3压坯的收缩率，单晶Al2O3球和板之间的颈部生长，和单晶Al2O3球和板之间的颈部生长的颗粒尺寸的影响是相互一致的体扩散烧结模型。TBE的收缩率和颈部生长的Al2O3的温度依赖性的特征在于由165千卡的激活能。每摩尔表观扩散系数和温度依赖性计算出的收缩压坯的Fe2O3同意测量的扩散系数的Fe在Fe2O3中的扩散。
Experimental measurements of the rate of shrinkage of pressed Al2O3compacts, the neck growth between single‐crystal Al2O3spheres and plates, and the effect of particle size on neck growth between single‐crystal Al2O3spheres and plates are mutually consistent with the bulk diffusion sintering model. Tbe temperature dependence of the rate of shrinkage and neck growth in Al2O3is characterized by an activation energy of 165 kcal. per mole. Apparent diffusion coefficients and temperature dependence calculated from the shrinkage of pressed compacts of Fe2O3agree with measured diffusion coefficients for the diffusion of Fe in Fe2O3.