Evaluation of the Specific Area Measurement of Ultrafine Tungsten Carbide Powders Using BET Isotherms

摘要：

　　When analyzing submicron and ultrafine Tungsten Carbide powders for cemented carbide use,a major issue is defining and measuring particle size and characteristics.As the commercial use of submicron and ultrafine WC powders grows,the use of the powder specific surface area,as determined by the Brunauer,Emmett and Teller (BET) gas adsorption technique,has become the most important single descriptor of powder size.This study was undertaken to assess the performance of this measurement technique.In this interlaboratory study,the BET surface area measurement,as practiced today,showed a standard deviation of 0.23 m2/g when measuring WC powders with specific surface areas of ~ 3.8 m2/g.

作者: W.Gao R.E.Cook J.Walck J.R.L.Trasorras

作者单位: Global Tungsten & Powders,Corp.,Towanda,Pennsylvania,USA

会议类型: 国际会议

会议名称: 2012 Zhuzhou International Conference on Cemented Carbides(株洲硬质合金国际学术会议)

会议地点: 株洲

会议语种:英文

页码: 442-451

在线出版日期: 2012-09-12（万方平台首次上网日期，不代表论文的发表时间）