Preparation and characterisation of TiN by microwave-assisted carbothermic reduction-nitridation in air atmosphere

被引：5
|
作者：
Ru, Juanjian [1 ]
Hua, Yixin [2 ,3 ]
Wang, Ding [2 ]
机构：
[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, 68 Wenchang Rd,Yieryi St, Kunming 650093, Yunnan, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming, Yunnan, Peoples R China
[3] State Key Lab Complex Nonferrous Met Resources Cl, Kunming, Yunnan, Peoples R China
来源：
ADVANCES IN APPLIED CERAMICS | 2017年 / 116卷 / 08期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Titanium nitride; ilmenite; microwave; carbothermic reduction-nitridation; COMBUSTION SYNTHESIZED PRECURSOR; SOLID-STATE SYNTHESIS; TITANIUM NITRIDE; LOW-TEMPERATURE; POWDERS; MICROSTRUCTURE; NANOPOWDER; PARTICLES; EVOLUTION; NITROGEN;
D O I：
10.1080/17436753.2017.1357292
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Titanium nitride (TiN) is prepared from ilmenite (FeTiO3) powders by microwave-assisted carbothermic reduction-nitridation in air atmosphere followed by acid leaching treatment. The thermal analysis of the reduction-nitridation of FeTiO3 powders is conducted by thermogravimetry/differential scanning calorimeter. The phase transition sequence of microwave carbothermal synthesis of TiN-Fe composite is: FeTiO3 -> Fe + TiO2 -> Fe + TiN. There is no any other oxygen-deficient titanium oxides detected. Particularly, FeTiO3 can be transformed into TiN-Fe composite completely at 900 degrees C for 60min by microwave heating. The increase in both the reaction temperature and dwelling time is in favour of the transformation of FeTiO3. The product morphologies are spherical about 2-5m in size. Then TiN is obtained with the removal of Fe and their oxides from TiN-Fe composite by acid leaching treatment. This method not only reduces the reaction temperature significantly through microwave heating but also can simplify the operation process effectively.
引用
收藏
页码：468 / 476
页数：9
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