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首页> 外文会议>TMS annual meeting exhibition;International symposium on high-temperature metallurgical processing >Effect of Carbon Reductant on the Formation of Copper Doped Titanium Oxycarbonitride by Carbothermal Reduction and Nitridation
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Effect of Carbon Reductant on the Formation of Copper Doped Titanium Oxycarbonitride by Carbothermal Reduction and Nitridation

机译：碳还原剂对碳热还原和氮化形成掺杂铜的氧碳氮化钛的影响

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摘要

In this paper, the effect of carbon reductant on carbothermal reduction and nitridation of copper-doped titanium oxide (Cu-TiO_2) was investigated. Reduction was performed under H_2-N_2 (50 vol.% N_2) gas mixtures with a temperature range of 1100-1300 ℃ for 1-3 h respectively. Three different carbon sources were investigated in the reaction which were graphite, activated carbon (AC) and carbon nanotube (CNT). The highest extent of reduction of 99.9% was obtained at 1300 ℃ for 180 min using 1:4 carbon to oxide molar ratio with CNT. Extent of nitridation was 71.7% while extent of carburization was 28.2% for this sample. Elemental analysis indicated an oxycarbonitride phase with a composition of Cu-TiO_(0.002)C_(0.28)N_(0.717). With CNT and AC as a reductant, the formation of Cu-TiO_xC_yN_z occurred at 1100℃ after 180 min. Increasing the reduction temperature, time and molar ratio, the TiN and TiC contents in the synthesized Cu-TiO_xC_yN_z are increased.
机译：本文研究了碳还原剂对掺杂铜的氧化钛（Cu-TiO_2）碳热还原和氮化的影响。在温度范围为1100-1300℃的H_2-N_2（50 vol。％N_2）混合气中还原1-3小时。在反应中研究了三种不同的碳源，分别是石墨，活性炭（AC）和碳纳米管（CNT）。使用碳与碳的摩尔比为1：4的碳纳米管，在1300℃下180min还原率最高达到99.9％。该样品的渗氮程度为71.7％，而渗碳程度为28.2％。元素分析表明碳氮氧化物相的组成为Cu-TiO_（0.002）C_（0.28）N_（0.717）。以CNT和AC为还原剂，在180分钟后于1100℃形成了Cu-TiO_xC_yN_z。增加还原温度，时间和摩尔比，合成的Cu-TiO_xC_yN_z中的TiN和TiC含量增加。

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