CeO_2-Gd_2O_3纳米复合粉的模压成形行为研究  

Die comacting behavior of nanosized CeO_2-Gd_2O_3 composite powders

作　　者：宋希文[1] 赵永旺[1] 彭军[1] 安胜利[1] 赵文广[1] 

机构地区：[1]内蒙古科技大学材料科学与工程学院

出　　处：《粉末冶金技术》2005年第4期284-286,共3页Powder Metallurgy Technology

基　　金：内蒙古科技攻关项目(20010808);教育部人才基金项目

摘　　要：测定了CeO2-Gd2O3纳米复合粉压制过程中压坯密度与成形压力的关系曲线。成形压力低于100MPa时,压坯密度随压力的增大而急剧增加;成形压力继续增大,压坯密度随压力的变化减慢。由压坯密度-压力对数关系曲线可知,粉末中团粒的屈服强度为44.7 MPa。另外,粉末的压制规律遵循黄培云双对数方程。The relationship between the green density and compacting pressure of the CeO2-Gd2O3 composite powders was measured. When the forming pressure is less than 100 MPa, the green density increases rapidly with increase of the compacting pressure, then the variation of density reduces with the further increase of pressure. According to the relating curve between powder density and logarithmic value of the forming pressure, the yielding strength of the agglomerates in the powders is 44.7MPa. And the compaction law of the powders conforms to Huang Peiyun＇ Double Logarithmic Equation.

关 键 词：CeO2-Gd2O3纳米复合粉 模压成形 黄培云双对数方程 纳米复合粉 行为研究 成形压力 压坯密度 关系曲线 压制过程 对数方程 

分 类 号：TF124.31[冶金工程—粉末冶金] TB383[冶金工程—冶金物理化学]