原料配比对石英质孔梯度陶瓷性能的影响  

Effect of Raw Materials Ratio on Properties of Pore Gradient Quartz Ceramics

作　　者：覃月宁[1] 王芳[2] 杜大明[2] 宋杰光 QIN Yuening;WANG Fang;DU Darning;SONG Jieguang(Xiangsihu College of Guangxi University for Nationalities, Nanning 530008, China;School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China;Engineering ~ Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, School of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China)

机构地区：[1]广西民族大学相思湖学院,南宁530008 [2]九江学院机械与材料工程学院,九江332005 [3]萍乡学院材料与化学工程学院江西省环保材料与装备工程技术研究中心,萍乡337055

出　　处：《机械工程材料》2018年第4期82-86,共5页Materials For Mechanical Engineering

基　　金：江西省教育厅科技项目(GJJ151074);九江学院科技项目(2015LGYB11);江西省科技厅平台建设基金资助项目(20161BCD40011)

摘　　要：以低品位石英砂为主要原料,通过制浆、成型、干燥和烧结等工序制备得到不同原料配比的石英质孔梯度陶瓷,研究了石英砂含量、水料质量比和发泡剂含量对该陶瓷气孔率、抗压强度和显微结构的影响,得到了较佳的原料配比.结果表明:随着石英砂含量的增加,试样的气孔率增大,宏观上呈现出一定的孔梯度结构;随着水料质量比的增加,试样的气孔率先增后降,气孔变得均匀,裂纹减少;随着发泡剂含量的增加,气孔率增大;抗压强度与气孔率呈现相反的变化规律;较佳原料配比为石英砂质量分数为70%,水料质量比为1.0,发泡剂质量分数为0.8%,制备得到石英质孔梯度陶瓷的抗压强度为6.18MPa,气孔率为63.5%,孔形较好.The low grade quartz sand was used as the main raw material,and then the pore gradient quartz ceramics with different ratios of raw materials were prepared by the process of pulping,forming,drying and sintering.The effects of quartz sand content,mass ratio of water to material and blowing agent content on the porosity,compressive strength and microstructure of the ceramics were studied,and the optimal raw materials ratio was obtained.The results show that with the increase of the quartz sand content,the porosity of the sample increased and the sample showed a macroscopic pore gradient structure.With the water to material mass ratio increasing,the porosity of the sample increased and then decreased,the pores became homogenous and the cracks decreased.With the incerase of the blowing agent content,the porosity increased.The compressive strength had opposite changes comparing with the poeposity.The relatively optimal raw materials ratio was listed as follows：quartz sand mass fraction of 70%,water to material mass ratio of 1.0 and blowing agent mass fraction of 0.8%.The pore gradient quartz ceramics with compressive strength of 6.18 MPa,porosity of 63.5% and better hole shape were obtained.

关 键 词：石英砂 梯度材料 抗压强度 气孔率 

分 类 号：TQ174.6[化学工程—陶瓷工业]