摘要
研究了用淀粉作为碳源还原氢化钛制备碳氮化钛纳米粉的工艺及利用热力学计算分析了反应机理。结果表明 :在实验范围内 ,降低合成温度、缩短保温时间或提高氮气流量有利于形成氮含量高的碳氮化钛粉末。通过控制合成温度和保温时间 ,可以控制Ti(C1 -xNx)中的碳氮比 ,得到不同x值的碳氮化钛粉末。
The carbothermal synthesi s of titanium carbonitride Ti(C 1-x N x)nanopodwer from titaniu m hydride powder and starch in nitrogen at mosphere was studied.and the mecha nizm was described by thermodyna mic calculation.The results indica te that x of Ti(C 1-x N x)powder decreases with the increase of reaction temperature and time and the decre ase of nitrogen partial pressure.T hus it is possible to control the nitrogen content in titanium carbo nitride powders by optimizing proc essing parameters.The experimental results are in agreement with calc ulated.
出处
《粉末冶金工业》
CAS
2004年第1期18-22,共5页
Powder Metallurgy Industry
基金
教育部跨世纪优秀人才培养计划基金
国家自然科学基金 ( 50 1 72 0 1 0 )
辽宁省自然科学基金重大项目 ( 2 0 0 1 1 0 1 0 0 2 )资助
