摘要
用氨解H_2[TiO(C_2O_4)_2]前驱体的方法成功制备出了纳米TiN粉体。通过X射线衍射分析了氨解温度和时间对氮化钛形成的影响以及形成机理。用透射电镜和扫描电子显微镜观察了氮化钛粉体的形貌和粒径。结果表明:1050℃氨解H_2[TiO(C_2O_4)_2]_2h所得纳米TiN粉体呈颗粒状,平均粒径约70nm,粒径大小较均匀。750℃H_2[TiO(C_2O_4)_2]氨解时形成TiO_2和TiO,随氨解温度升高和时间延长,最后形成立方相TiN。提高氨解温度有利于前驱体的氨解,并可缩短TiN的形成时间。
A new method for the preparation of titanium nitride nanopowder through ammonolysis of H_2[TiO(C_2O_4)_2]is presented. The effect of ammonolysis conditions such as temperature and holding time on both the formation of TiN and the formation mecha- nism has been analyzed by X-ray diffraction.The morphology and particle size of TiN powder were observed by transmission elec- tron microscopy and scanning electron microscopy.The results show that the morphology of nano-TiN powder is granular and the average parti...
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2009年第1期68-71,共4页
Journal of The Chinese Ceramic Society
关键词
氮化钛
纳米材料
氨解
titanium nitride
nano-material
arnmonolysis
