| Preparation of Fe-Al Intermetallie /TiC-Al2O3 Ceramie Composites from llmenite by SHS |
| |
| 作者姓名： | ZOU Zhengguang WU Yi YIN Chuanqiang LI Xiaomin |
| |
| 作者单位： | [1]Key Laboratory of New Processing Technology for Nonferrous Metals and Materials（Ministry of Education Guilin University of Technology, Guilin 541004, China [2]School of Materials Science and Engineering, Nanchang University, Nanchang 330031, China |
| |
| 基金项目： | Funded by the Natural Science Fundation of Guangxi Province（No. 0575104）, the Guangxi Education Department Key Fund （No. 2003-22）, the Guangxi Fund of New Century Qualified Scholars（No. 2002210） and the National Science Foundation （No. 50672016） |
| |
| 摘 要： | Fe-Al intermetallic/TiC-Al2O3 ceramic composites were successfully prepared by selfpropagating high-temperature synthesis （SHS） from natural ilmenite, aluminium and carbon as the raw materials. The effects of carbon sources, preheating time and heat treatment temperature on synthesis process and products were investigated in detail, and the reaction process of the FeTiO3-Al-C system was also discussed. It is shown that the temperature and velocity of the combustion wave are higher when graphite is used as the carbon source, which can reflect the effect of the carbon source structure on the combustion synthesis; Prolonging the preheating time or heat treatment temperature is beneficial to the formation of the ordered intermetallics; The temperature and velocity of the combustion wave are improved, but the disordered alloys are difficult to eliminate with the preheating time prolonged. The compound powders mainly containing ordered Fe3Al intermetallic can be prepared through heat treatment at 750 ℃.
|
| 关 键 词： | 钛铁矿 金属材料 陶瓷材料 复合材料 |
| 收稿时间： | 2006-10-12 |
| 修稿时间： | 2007-04-16 |
| 本文献已被 维普 SpringerLink 等数据库收录！ |
|
