摘要
采用Mg O、Al2O3与Si O2作为原料按照一定配比进行混合,将混合后原料通过微波烧结合成堇青石基透波材料,并考察不同的微波烧结温度对所得样品的物相、介电性能、显气孔率及体积密度的影响。试验结果表明,提高微波烧结温度有利于堇青石相的生成;随温度的升高样品的致密度增大,介电常数变大,同时,陶瓷材料内部分镁铝尖晶石相转变为堇青石相,使得介电常数变小,1 350℃材料的介电常数最高;随着烧结温度的升高,样品的显气孔率逐渐降低,体积密度逐渐增大。
Using Mg O,Al2O3 and Si O2 with certain blending proportion as the raw material,the synthetic cordierite-based wave-transparent material was made by microwave sintering.The influences of different microwave sintering temperature on the phase,dielectric properties,apparent porosity and bulk density of the samples were studied.The results indicated that increasing microwave sintering temperature is in favor of generating cordierite phase; density and dielectric constant of the sample increase with increasing temperature,while within the ceramic material a portion of spinel transforms into cordierite phase,so that the dielectric constant decrease.The dielectric constant is highest at temperature of 1 350 ℃; with further increase in sintering temperature,the apparent porosity of the sample decreases,and the bulk density increases.
出处
《矿冶》
CAS
2017年第1期46-49,共4页
Mining And Metallurgy
基金
国家自然科学基金资助(51404114
51504110)
关键词
透波材料
微波烧结
堇青石
介电性能
wave-transparent material
microwave sintering
cordierite
dielectric property
作者简介
郑孝英，副教授，主要研究方向为化工。E-mail：zxytly19960402@126．com
通信作者：陈菓，教授；E-mail：guochen@kmust．edu．cn；电话：15925113721
