烧结气氛对钢渣微晶玻璃复合材料性能的影响  

Effect of Sintering Atmosphere on Performance of Boron Carbide-Steelmaking Slag Based Glassceramic Composites

作　　者：李宇[1] 张玲玲[1] 王洋[1] 苍大强[1] 

机构地区：[1]北京科技大学 钢铁冶金新技术国家重点实验室,北京100083

出　　处：《稀有金属材料与工程》2013年第S1期310-313,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金重点项目(51034008);中央高校基本科研业务费(FRF-SD-12-002B);粤港关键领域重点突破项目(2010Z52102);广东省重大科技专项(2010A080804005)

摘　　要：为了改善钢渣微晶玻璃的力学性能,在空气和氮气条件下分别烧结制备了碳化硼-钢渣微晶玻璃复合材料,并对样品结构和性能进行了研究。结果表明,复合材料性能受烧结气氛影响显著,在氮气条件下烧制样品的抗折和抗压强度接近空气条件下制备样品的2倍,显著高于单体微晶玻璃的力学性能。相对空气气氛,在氮气条件下的复合材料中存在更多的Fe2+,并使得内部具有更多辉石相和致密微观结构,从而利于其力学性能的增强。In order to enhance mechanical performance of steelmaking slag based glass-ceramic, boron carbide-steelmaking slag based glass ceramic composites were prepared and sintered separately in an air and a nitrogen atmosphere. Researches about structure and performance of the composites show that values of flexural and compressive strength of the composites under the nitrogen atmosphere are about 2 times higher than that of the composite under the air atmosphere. Compared with the composite under air atmosphere, the enhanced mechanical properties of the composite under nitrogen atmosphere would contribute to more Fe2+ due to the reduction of the boron carbide, substitution of Fe2+ for Ca2+ and Mg2+ in pyroxene structure which lead to more pyroxene phase, more mineral phase and dense microstructure.

关 键 词：烧结气氛 碳化硼 钢渣微晶玻璃 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]