文献类型：期刊文献

中文题名：高—低温二步煅烧法制备Al2O3微球的研究

英文题名：High-low Temperature Two-step Calcining Process for the Synthesis of the Al2O3 Microspheres

作者：孙小曼[1];李蔚[1];宋雁翎[1];汪霖[2]

机构：[1]华东理工大学材料科学与工程学院,上海200237;[2]南通特乃博高新材料有限公司,江苏南通226600

年份：2020

卷号：27

期号：4

起止页码：1

中文期刊名：中国陶瓷工业

外文期刊名：China Ceramic Industry

语种：中文

中文关键词：高—低温二步煅烧法;Al2O3微球;石墨;预筛分;造粒粉

外文关键词：high-low temperature two-step calcination;Al2O3 microspheres;graphite;pre-screening;granulation powder

摘要：采用高—低温二步煅烧法制备了致密的Al2O3微球,研究了掺加石墨和筛分等工艺对Al2O3微球分散性的影响。结果表明,以95 Al2O3造粒粉为原料,利用高—低温二步煅烧法,经1550℃煅烧、1000℃除碳处理后,可获得致密度高、团聚少、分散性好的Al2O3微球。掺加50 wt.%石墨可以有效地降低Al2O3微球之间的团聚,预筛分则可有效减少粗、细Al2O3微球之间的粘连。文中对石墨和筛分对微球的影响原因也进行了讨论。
In this study, high density Al2O3 ceramic microspheres were prepared high-low temperature two-step calcination process by using 95 Al2O3 spray granulation powder as raw material. The effects of graphite and screening on the dispersion of Al2O3 microspheres were studied. It was found that after calcination at the temperature of 1550 ℃, decarbonization at 1000 ℃, Al2O3 microspheres with high density, better dispersion. Adding 50 wt.% graphite can effectively reduce the aggregation of Al2O3 microspheres while screening can effectively reduce the adhesion between coarse and fine Al2O3 microspheres. The reasons why the graphite and screening have an effect on the Al2O3 microspheres are also discussed in this paper.