TiB_2在球磨中的氧化行为(英文)  

OXIDATION BEHAVIOR OF TiB_2 DURING BALL-MILLING

作　　者：黄飞[1] 傅正义[1] 王为民[1] 王皓[1] 王玉成[1] 张金咏[1] 张清杰[1] 

机构地区：[1]武汉理工大学,复合材料新技术国家重点实验室,武汉430070

出　　处：《硅酸盐学报》2008年第1期17-20,共4页Journal of The Chinese Ceramic Society

基　　金：教育部重大培育和创新团队(704034);湖北省创新群体(2006ABC006)资助项目。

摘　　要：用行星球磨对TiB2原粉进行处理,并用X射线光电子能谱仪,X射线衍射仪,能量色散X射线荧光光谱仪等对TiB2在球磨过程中的氧化行为进行分析。结果表明:在室温下TiB2粉末存在表面氧化,而球磨加速TiB2粉末氧化,随着球磨时间的延长,TiB2粉末的氧化程度加大;酸洗及离心作用造成硼的流失,使B和Ti的摩尔比失调,最终形成TiO2和少量硼酸包覆TiB2结构;通过改变不同球磨工艺,发现湿磨加Ar保护工艺使TiB2被氧化程度明显降低。TiB2 raw powders were treated by planetary ball-milling and the oxidation behavior was analyzed by X-ray photoelectron spectrometer, X-ray diffractometer, energy dispersive X-ray spectrometry. The results show that the surface of TiB2 powder was oxidized at room temperature, oxidation was accelerated during ball-milling and increased gradually with the increasing of ball-milling time. The molar ratio of B to Ti decreased because of the boron loss during acid cleaning and centrifugation. In the end, TiB2 powder was formed in coated with TiO2 and a small amount of H3BO3. When alcohol was used as medium and argon protection was adopted, the oxidation decreased obviously.

关 键 词：二硼化钛 行星球磨 氧化 

分 类 号：TF123[冶金工程—粉末冶金] TB39[冶金工程—冶金物理化学]