摘要
以硝酸铋和氨水为原料,通过液相沉淀法制得前驱体沉淀,再经灼烧获得超细氧化铋。经热重分析(TGA)和差热分析(DTA)表明:前驱体沉淀中Bi(OH)3的质量占99 44%,Bi2O3占0 56%,在560℃下完全分解成Bi2O3。经粒度分析、X-射线衍射和扫描电镜(SEM)表明:制备的氧化铋平均粒径为0 20μm,纯度高,晶型为单斜晶型,形貌为不规则颗粒。
Superfine Bi2O3 powder was obtained by Bi(NO3)3 and ammonia with the method of liquidphrase preciptation,and superfine Bi2O3 powder was obtained by calcining the preciptate prepared.The preciptate's ingredient (Bi(OH)3 9944%,Bi2O3 056%) and decomposing temperature (560℃) were determined by TGA and DTA.Analyses of X-ray and SEM indicated the superfine Bi2O3 powder has the average size of 020μm and high purity with the monoclinic crystalloid and appearance of anomalous article.
出处
《湖南有色金属》
CAS
2003年第4期15-16,45,共3页
Hunan Nonferrous Metals
关键词
氧化铋
超细粉体
液相沉淀法
bismuth oxide
superfine powder
liquid-phrase preciptation
