Effect of stearic acid on the morphological and structural evolution of mechanically milled Nb-based powder  

作　　者：De-zhi Zhang Xuan-hui Qu Ming-li Qin Lin Zhang Xin Lu 

机构地区：[1]State Key Laboratory for Advanced Metals and Materials,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2012年第11期1052-1057,共6页矿物冶金与材料学报（英文版）

基　　金：the National Basic Research Program of China(No.2011CB606306);the National High Technology Research and Development Program of China(No.2009AA033201);the National Natural Science Foundation of China(No.50974017);the Fundamental Research Funds for the Central Universities(No.FRF-TP-11-004A);the Program for New Century Excellent Talentsin Universities of China(No.NCET-10-0226);Fok Ying Tung Education Foundation for Young College Teachers(No.122016)

摘　　要：Nb-based powder was fabricated via mechanical grinding. The influence of stearic acid on the grinding process was studied. The slructural evolution and morphological evolution of the milled powder were characterized by X-ray diffraction （XRD）, scanning electron mi- croscopy （SEM）, and energy dispersive spectroscopy （EDS） analysis. It is indicated that an appropriate amount of stearic acid accelerates the particle refinement process and favors the production of superfine Nb-based particles with good dispersivity and high activity. However, an inappropriate amount of stearic acid has an adverse effect on the refinement process.Nb-based powder was fabricated via mechanical grinding. The influence of stearic acid on the grinding process was studied. The slructural evolution and morphological evolution of the milled powder were characterized by X-ray diffraction （XRD）, scanning electron mi- croscopy （SEM）, and energy dispersive spectroscopy （EDS） analysis. It is indicated that an appropriate amount of stearic acid accelerates the particle refinement process and favors the production of superfine Nb-based particles with good dispersivity and high activity. However, an inappropriate amount of stearic acid has an adverse effect on the refinement process.

关 键 词：niobium alloys POWDERS stearic acid GRINDING MORPHOLOGY microstructural evolution 

分 类 号：TQ225.126[化学工程—有机化工] TF123.71[冶金工程—粉末冶金]