摘要
以氯化亚锡、草酸、三氯化锑、碳酸氢铵和氨水为原料,借助球磨过程中机械力的研磨、破碎和搅拌引发化学反应,制备出成分均匀的超细前驱体;将前驱体于高温下进行热分解制备纳米掺锑二氧化锡(ATO)粉体。利用X射线衍射仪(XRD)、扫描电镜(SEM)、电阻测量仪等分析方法,研究了掺杂量、热分解温度、时间与pH值对ATO电阻率等性能的影响。结果表明:在以适当方式调节球磨反应终点pH为8.5的条件下制备的掺锑10%(质量分数)的前驱体,于600℃下热分解2h后再于900℃下恒温2h,得到了压片电阻率为1.2Ω.cm的浅蓝色纳米ATO粉体。
Precursors were prepared by ball-milling solid chemical reaction using H2C2O4·H2O, SnCl2· 2H2O,SbCl3 and NH4HCO3 as raw materials at ambient temperature. In the process of milling, the raw materials were milled, mixed round, thus leading to reacting with each other. So supper small precursors were prepared by dint of milling. Then antimony doped tin oxide （ATO） was ob- tained by thermal decomposition of the precursors. The effect of antimony content, thermal decomposition temperature, time, and pH on resistance of ATO was studied by means of XRD, SEM and measuring resistance. The results show that if pH is 8.5 by the end of milling, the azure spherical nano-ATO about 80nm will be obtained by decomposition of the precursor（10% Sb, mass fraction） at 900℃ for 2h after at 600℃ for 2h, whose resistance is 1.2Ω·cm.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2009年第9期42-46,共5页
Journal of Materials Engineering
