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.
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)
