CAJ | 학술논문

以白云鄂博尾矿和粉煤灰为主要原料,采用熔融法制备了一种性能优良的尾矿微晶玻璃,并以此为基础,采用差热分析(DTA)、X射线衍射仪(XRD)、扫描电镜(SEM)研究了Na2O含量变化对所制备微晶玻璃显微结构及力学性能的影响.结果表明,当Na2O含量低于8％时主晶相为辉石相.随着Na2O含量的增加,辉石相的生成受到抑制,同时霞石相开始出现.上述变化对微晶玻璃的耐碱性影响不明显,而对密度、抗折强度及耐酸性有较大影响.
이백운악박미광화분매회위주요원료,채용용융법제비료일충성능우량적미광미정파리,병이차위기출,채용차열분석(DTA)、X사선연사의(XRD)、소묘전경(SEM)연구료Na2O함량변화대소제비미정파리현미결구급역학성능적영향.결과표명,당Na2O함량저우8％시주정상위휘석상.수착Na2O함량적증가,휘석상적생성수도억제,동시하석상개시출현.상술변화대미정파리적내감성영향불명현,이대밀도、항절강도급내산성유교대영향.
High quality glass-ceramics were successfully produced from the Baiyunebo tailing and fly ash as main raw materials by the method of melting.The influence of Na2O variation on the fabrication,microstructure and property of the glass ceramic was studied by differential thermal analysis(DTA),X-ray powder diffraction(XRD),scanning electron microscope(SEM)and the measurements of bending strengths,density,acid-corrosion and alkalicorrosion resistance.The results shows that up to 8wt％,the increase of Na2 O content has no distinct effect on the glass-ceramics.Then the further increase of Na2O concentration may hinder the formation of well dispersed pyroxene particles by promoting crystallization of nepheline phase.This change affects little the resistance of the glass ceramic to alkali-corrosion.However,the density,bending strength and the resistance to acid-corrosion of the samples deteriorate obviously at the same time.