以钛酸四正丁酯为钛源制备超细Ti粉体

以有机钛源钛酸四正丁酯（Ti（OC₄H₉）₄）与纳米碳黑（C）为反应原料制备超细Ti（C_1-xN_x）粉体。经过计算可知两者理论质量比约为9.4：1，以m（Ti（OC₄H₉）₄）：m（C）=9：1混料，通过溶胶凝胶法制备烧结前驱体。利用高温碳热还原法，在N₂气氛中，分别在不同温度下恒温烧结1 h，直接反应合成超细Ti（C_1-xN_x）粉体。结果发现，随温度升高，x 值逐渐降低，数值区间为0.19~0.72；产物组分中的总碳含量（C_t）逐渐增大，从14.23wt%增大到18.66wt%，游离碳含量（C_f）与氧含量（C_o）均低于0.5wt%；产物平均粒度也呈增大趋势，平均粒度分布区间为220~275 nm。

Ultrafine Ti(C1-xNx) powder derived from tetrabutyl titanate

The Ti(C_1-xN_x) powder was synthesized by utilization of tetrabutyl titanate (Ti(OC₄H₉)₄) and nano carbon black (C) as raw materials, with their theory mass ratio of 9.4:1. Tetrabutyl titanate and carbon black with their mass ratio of m(Ti(OC₄H₉)₄):m(C)=9:1, were mixed to prepare the sintering precursor through sol-gel process. Ultrafine Ti(C_1-xN_x) powder was obtained after calcination at various temperatures and N₂ atmospheres for 1 h with the help of high temperature carbon thermal reductive reaction. The results show that, with increasing temperature, x values of Ti(C_1-xN_x) gradually reduce and range from 0.19 to 0.72. The content of total carbon(C_t) in the products increases from 14.23wt% to 18.66wt%, the contents of free carbon (C_f) and oxygen (C_o) all remain below 0.5wt%. In addition, the particle sizes also show a trend of increase, in the range of 220 nm to 275 nm.