碳热还原氮化法制备氮化钒  

Preparation of vanadium nitride by carbothermic reduction and nitrogenization

作　　者：储志强[1,2] 郭学益[1] 田庆华[1] 张立[3] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083 [2]湖南省冶金材料研究院,长沙410129 [3]中南大学粉末冶金研究院,长沙410083

出　　处：《粉末冶金材料科学与工程》2015年第6期965-970,共6页Materials Science and Engineering of Powder Metallurgy

基　　金：湖南省科技厅工业科技计划重点项目(06GK3121)

摘　　要：以V2O5为原料,采用碳热还原法制备氮化钒,通过扫描电镜（SEM）和X射线衍射（XRD）观察与分析还原氮化产物的形貌与组成,分析产物的碳、氮、氧含量,研究原料配碳量、氮化温度和氮化时间等对还原氮化产物的影响。结果表明：还原氮化产物为碳氮化钒的固溶体。原料配碳量是影响反应产物中氮含量的关键因素,配碳比（质量分数）约为21%时还原氮化产物具有最高的氮含量14.76%;氮化温度应控制在1 400~1 420℃范围内,氮化时间达到4 h即可实现氮化完全。Vanadium nitride was prepared by carbon thermal reduction method using V2O5 as raw material. The morphology and composition of the reduction products were observed and analyzed by SEM and XRD. The contents of carbon, nitrogen and oxygen of the product were tested, and the effects of raw materials parameters, such as carbon content, temperature and time on the reduction of the product were also studied. The results show that the reduction product is a solid solution of carbon and nitride. The carbon content of raw material is the key factor to affect the content of nitrogen in the reaction products, and nitrogen content in the product has the highest value of 14.76% when the mass fraction of carbon in raw materials is about 21%; the nitriding temperature should be controlled in the range of 1 400- 1 420 ℃, and the nitriding time can be reached by 4 h.

关 键 词：五氧化二钒 氮化钒 碳热还原 氮化 

分 类 号：TF123[冶金工程—粉末冶金]