原料中钾含量对掺La基体二氧化钼粒度及分布的影响  

Effect of Potassium Content in Raw Material on the Particle Size of La--doped Substrate Molybdenum Dioxide

作　　者：杜庆柏[1] 王森锦 梁宏 蔡伟[1] 胡静[1] 

机构地区：[1]常州大学材料科学与工程学院,江苏常州213164 [2]南通光明钼制品厂,江苏南通226600

出　　处：《中国材料科技与设备》2013年第2期26-27,共2页Chinese Materials Science Technology & Equipment

基　　金：科技部创新基金资助项目（09C262132008）,江苏省创新基金资助项目（SBC200920162）

摘　　要：颗粒粗大疏松的二氧化钼是良好的液固相掺杂的基体材料，为了获得颗粒粗大疏松的二氧化钼，研究了三氧化钼原料中钾含量对二氧化钼粒度及其分布的影响，并用平均粒度仪测定还原后的二氧化钼的费氏粒度。结果表明，随原料三氧化钼中钾含量的增加，二氧化钼的费氏粒度增加。同时发现，当原料中钾含量不超过0．015％时，随钾含量增加，二氧化钼粒度分布范围变窄，粒径极差缩小；而当钾含量超过0．015％时，随钾含量的增加，粒度分散度增大，细小颗粒增多，粒径极差明显增大。Bulky and loose molybdenum dioxide particles is good solid--liquid phase doped substrate material. In order to obtain the bulky and loose molybdenum dioxide particles, the effect of the content of potassium in molybdenum trioxide raw materials on molybdenum dioxide particle size was studied, and the particle size of molybdenum dioxide after reduction was measured by the average particle size analyzer. The results show that the particles size of molylxtenum dioxide increases with increasing potassium content in molybdenum trioxide raw materials. The distribution of particle size tends to be more concentrated with potassium content increasing when its content is less than 0. 015%, however, it tunas to be more scattered when its content is more than 0. 015%.

关 键 词：钾含量 二氧化钼 粒度 

分 类 号：TG132.3[一般工业技术—材料科学与工程]