Carbothermal synthesis of ZrC powders using a combustion synthesis precursor

被引：36
|
作者：
Chu, Aimin [1 ,2 ]
Qin, Mingli [1 ]
Rafi-ud-din [3 ]
Zhang, Lin [1 ]
Lu, Huifeng [1 ]
Jia, Baorui [1 ]
Qu, Xuanhui [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[2] Hunan Univ Sci & Technol, Sch Electromech Engn, Xiangtan 411201, Peoples R China
[3] PINSTECH, Div Chem, Islamabad, Pakistan
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2013年 / 36卷
关键词：
ZrC powders; Carbothermal reduction; Combustion synthesis; Precursor; ZIRCONIUM CARBIDE; REDUCTION; TITANIUM; HAFNIUM; CARBON;
D O I：
10.1016/j.ijrmhm.2012.08.016
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZrC powders were synthesized by carbothermal reduction of a combustion synthesized precursor derived from zirconium nitrate, urea, and glucose mixed solution. The results showed that the obtained precursor was comprised of polyporous blocky particles. The precursor powders were subsequently calcined under argon at 1200-1600 degrees C for 3 h. The transformation of ZrO2 to ZrC, by adopting this route, occurred at 1300 degrees C. The preparation of ZrC experienced an intermediate phase of ZrOxCy. ZrC powders synthesized at 1500 degrees C are characterized by the spherical shape, small particle size (120-180 nm in diameter), low oxygen content (1.4 wt.%) and non-aggregated particles. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：204 / 210
页数：7
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