燃烧合成ZrB2 / Al2O3 复合粉体及其界面分析

于志强; 杨振国

燃烧合成ZrB₂ / Al₂O₃ 复合粉体及其界面分析

复旦大学材料科学系, 上海 200433

基金项目: 上海市经委产业化项目( KNH2021005)

详细信息

通讯作者:
杨振国,教授,博士生导师,研究方向为耐磨耐蚀复合材料 E-mail:zgyang@fudan.Edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2004-09-06
- 修回日期: 2004-11-02
- 刊出日期: 2005-08-14

PREPARATION AND INTERFACE ANALYSIS OF ZrB₂ / Al₂O₃ COMPOSITE POWDERS

Department of Materials Science, Fudan University, Shanghai 200433, China

摘要

摘要: 采用燃烧还原合成技术, 以还原体系(B₂O₃ + ZrO2 + Al) 为反应体系制备了ZrB₂ / Al₂O₃ 复合粉体。利用X射线衍射(XRD) 、X 射线光电子能谱(XPS) 和透射电镜( TEM、HRTEM) 对复合粉体的物相组成、化学组成及界面结构进行了表征分析。结果表明, 复合粉体中存在Zr 、B、Al 和O 元素且它们分别以ZrB₂ 和Al₂O₃ 为主要存在形式, ZrB₂ 和Al₂O₃ 为复合粉体的主晶相。复合粉体中有少量ZrO2 的存在, 分析认为是合成反应过程中未参加反应的ZrO2 。ZrB₂ 和Al₂O₃ 颗粒间形成了结合良好的界面, 这主要与ZrB₂ 的结晶过程有关。
- 燃烧合成 /
- B₂O₃ + ZrO2 + Al 体系 /
- ZrB₂ / Al₂O₃ /
- 复合粉体 /
- 界面
Abstract: The combustion synthesis reaction with reductive process was used to produce ZrB₂ / Al₂O₃ compositepowders f rom B₂O₃-ZrO2-Al system. The phases , chemical compositions and interfaces of the composite powderswere characterized and analysed by X-ray diff raction (XRD) , X-ray photoelect ron spect roscope (XPS) , t ransmissionelect ron microscope ( TEM) and high resolution elect ron microscope ( HRTEM) . The result s show that Zr , B , Aland O element s exist in composite powders as ZrB₂ and Al₂O₃ . The ZrB₂ and Al₂O₃ are the primary phase in thecomposite powders. The presence of a very small amount of ZrO2 is considered to be unreacted zirconium oxide powders. TEM and HRTEM observations of interface of the composite powders indicate that the good interfacial bonding states are formed between the ZrB₂ and Al₂O₃particle. It can be suggested to be related to the crystallizationprocess of the ZrB₂ particles.
- combustion synthesis /
- B₂O₃-ZrO2-Al system /
- ZrB₂ / Al₂O₃ /
- composite powders /
- interface