硅酸盐学报

制备参数对纳米V_2O_5颗粒形貌的影响

作者：杨绍利徐楚韶陈厚生王晶王金超

单位：重庆大学材料科学与工程学院重庆大学材料科学与工程学院攀枝花钢铁集团公司攀枝花钢铁集团公司攀枝花钢铁研究院重庆400044 重庆400044 四川攀枝花617067 四川攀枝花617067 四川攀枝花617000

分类号：TB383

出版年,卷(期):页码：2003,31(3):312-315

DOI：

摘要：

用透射电子显微镜、微观体视学图象分析系统研究冶金V2 O5溶胶中V2 O5颗粒的微观形貌 ,以及制备工艺参数对其微观形貌的影响。结果表明 :V2 O5颗粒形貌呈现出多样性 ,既有针状 ,又有近球状和球状 ,还有“短棒状”和“椭球状” ;近球状V2 O5颗粒非常接近于球状 ;V2 O5颗粒的团聚方式也呈现多样性 ,且团聚时效较快。随着水的体积与冶金五氧化二钒质量之比 [简称水钒比 ,V(w) /m(V) ]的降低 ,V2 O5颗粒形状由针状、近球状逐渐过渡到球状。当V(w) /m(V)在 40mL/ g以下时 ,颗粒基本上呈球状。熔化温度升高 ,则V2 O5颗粒直径增大。恒温时间延长则V2 O5颗粒直径减小

Micro_shape of V_2O_5 particles in metallurgical V_2O_5 sol was observed by transmission electron microscope(TEM). The influence of preparation process parameters on the micro_shape of the particles was studied. Test results show that the shape of V_2O_5 particles is varied such as acicular, spheroidal, spherical, and something like "short rod form" and "ellipsoid form". Spheroidal V_2O_5 particles is very much close to spherical. The way of gathering V_2O_5 particles is also various, and the speed of gathering is rapid comparatively. Along with the reduction of V(w)/m(V) (the volume of water to the mass of V_2O_5 ) shape of V_2O_5 particles gradually transforms from acicular and spheroidal to spherical. When V(w)/m(V) is below 40 mL/g particles of V_2O_5 is basically spherical. When melting temperature goes up the diameter of V_2O_5 particles increases, whereas particles diameter decreases when the constant temperature keeps long.

基金项目：

攀枝花新钢钒股份有限公司 (新钢钒 ) ( 2 0 0 1外协 2 3)资助项目

作者简介：

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