摘要
本文通过优化混合方式将Ti、Si、石墨和Al等粉末按照一定配比混合后,在1 420℃氩气保护下合成了Ti3SiC2粉末。用XRD和SEM分别分析了样品中的相成分、微观形貌,计算得出其质量百分含量,高达96.7%,研究了烧结工艺中降温速率对Ti3SiC2微观形貌的影响,并讨论了其生长机理。本工艺原料混合简单有效,得到的产品纯度高,因而有助于实现Ti3SiC2粉末的批量生产。
The Ti, Si, graphite and A1 powders mixed according to certain proportion by optimizing the mixing methods, then the mixed powder was sintered at 1 420 °C for 2 hours under the protection of argon, pressureless reactive sintering synthesis Ti3SiC2 powder. X-ray diffraction （XRD） was applied to determine the phase compositions of the products, Calculate the Ti3SiC2 content of products, up to 96.7%. The structure and morphology of the products were characterized by SEM and the affect of the cooling rate on the morphology of Ti3SiC2 and the growth mechanism was discussed. Method of mixing of raw materials is simple and effective, purity of the product is high and this approach helps to achieve mass production of Ti3SiC2 powder.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2012年第4期703-709,共7页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.50471051)
科技部“863”计划(No.2007AA03Z358)资助项目
