喷涂氧化铝粉体及其在等离子焰流下的变化  

Spay-on Alumina Powder and Its Changes in Plasma Flame

作　　者：罗玉长[1] 叶长龙[1] 

机构地区：[1]山东铝业公司研究院,山东淄博255061

出　　处：《齐鲁石油化工》2002年第1期13-15,共3页Qilu Petrochemical Technology

摘　　要：用烧结法生产喷涂氧化铝 ,试验采用水冷非转移式等离子喷枪 ,工作气体 (N2 、H2 )纯度为 99 9%。稳定相α -Al2 O3经等离子焰流熔融、淬冷后 ,转变为亚稳相γ -Al2 O3粉体 ,后经等离子焰流熔融、雾化可获Na2 O含量不大于 0 0 3 %的球状低钠Al2 O3。Presents the production of spray-on alumina powder by sintering process. The water-cooling non-transference plasma spray gun is used and the purity of working gas such as N 2 and H 2 should be up to 99.9%. The stable phase of α-Al 2O 3 is transformed to sub-stable phase γ- Al 2O 3 powder after being melted by plasma flame, finally the spherical low sodium alumina is obtained.

关 键 词：烧结法 水冷非转移式等离子喷枪 喷涂氧化铝粉体 等离子体焰流 相变 球化低钠氧化铝 

分 类 号：TF124.85[冶金工程—粉末冶金]