文献类型：期刊文章

作　　者：森维[1,2,3] 徐宝强[1,2] 杨斌[1,2] 孙红燕[1,2] 宋建勋[1,2] 万贺利[1,2] 戴永年[1,2]

机构地区：[1]真空冶金国家工程实验室,昆明650093 [2]云南省有色金属真空冶金重点实验室,昆明650093 [3]昆明理工大学材料科学与工程学院,昆明650093

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Project(u0837604)supported by the Natural Science Foundation of Yunnan Province,China;Project(51004058)supported by the National Natural Science Foundation of China;Project(20095314110003)supported by Specialized Research Fund for the Doctoral Program of Higher Education

年　　份：2011

卷　　号：21

期　　号：1

起止页码：185-190

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2011_2012、EBSCO、EI、IC、INSPEC、JST、SCI(收录号：WOS:000286980300028)、SCI-EXPANDED(收录号：WOS:000286980300028)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：The preparation of fine TiC powders by carbothermal reduction of TiO2 in vacuum was investigated by XRD,SEM,XRF and laser particle sizer.Thermodynamic analysis indicates that it is easy to prepare TiC in vacuum and the formation sequence of products are Ti4O7（Magneli phase）,Ti3O5,Ti2O3,TiCxO1-x and TiC with the increase of reaction temperature.Experimental results demonstrate that TiC powders with single phase are obtained with molar ratio of TiO2 to C ranging from 1：3.2 to 1：6 at 1 550 ℃ for 4 h when the system pressure is 50 Pa,and TiC1.0 is gained when the molar ratio of TiO2 to C is 1：4 and 1：5.In addition,fine TiC1.0 powders（D50 equals 3.04 μm） with single phase and low impurities are obtained when the molar ratio of TiO2 to C is 1：4.SEM observation shows that uniform shape,low agglomeration,and loose structure are observed on the surface of block product.

关 键 词：titanium dioxide  titanium carbide  VACUUM carbothermal reduction method  

分 类 号：TB44]