α-Al_2O_3微粉激光粒度分析的若干影响因素  

Influencing factors on particle size distribution analysis of ultra-fine α-Al_2O_3

作　　者：刘新红[1] 程宝珠[2] 曹新民[3] 葛铁柱[1] 

机构地区：[1]郑州大学材料学院,郑州450052 [2]河南工业大学,郑州450007 [3]郑州机械研究所,郑州450052

出　　处：《金刚石与磨料磨具工程》2009年第4期48-51,55,共5页Diamond & Abrasives Engineering

基　　金：河南省教育厅资助项目(2008A430017)

摘　　要：借助激光粒度仪研究了超声分散时间、遮光度、超声强度和泵速以及分散剂种类及其加入量对α-Al2O3微粉粒度分布的影响,结果表明:(1)分散时间为2～3min,泵速为2200r/min,超声强度为14,遮光度为5%～7%时,分散效果较好;(2)加入分散剂可将细小粒子进一步分散,聚丙烯酸铵和FS-10的分散效果优于三聚磷酸钠和六偏磷酸钠;(3)分散剂的较佳加入量为:三聚磷酸钠0.045%、六偏磷酸钠0.03%、聚丙烯酸铵0.04%～0.07%和FS-100.09%。The effects of dispersing time, concentration, ultrasonic level, pumping speed and the type and amount of dispersants on the particle distribution of ultra-fine α-Al2O3 were investigated by using Laser Particle Analyzer apparatus. Based on the analysis results, conclusions are drawn as follows： （1） The optimum experimental conditions include dispersing time 2 - 3 min, pumping speed 2 200 r/min, ultrasonic level 14 and concentration 5% -7%;（2） The dispersants added can promote the ultra-fine α-Al2O3 to disperse,and the effect of ammonium salt of polyacrylic acid and FS-10 is better than trimeric sodium phosphate and sodium hexametaphosphate; （3） The optimum amount of trimerie sodium phosphate, sodium hexametaphosphate, ammonium salt of polyaerylic acid and FS-10 is 0. 045%, 0.03%, 0. 04% - 0. 07% and 0. 09% respectively.

关 键 词：Α-AL2O3微粉 激光粒度分析 分散剂 

分 类 号：TG73[金属学及工艺—刀具与模具]