超低钠小原晶α氧化铝的陶瓷烧结性能研究  

Study on Ceramic Sintering Properties of Ultra-low Sodium and Small ProtocrystallineαAlumina

作　　者：秦念勇 齐波 冯晓明 Qin Nianyong;Qi Bo;Feng Xiaoming(Shandong Co.,Ltd.,Aluminum Corporation of China,Shandong,255051)

机构地区：[1]中铝山东有限公司,山东255051

出　　处：《当代化工研究》2024年第1期32-34,共3页Modern Chemical Research

摘　　要：本文详细研究了低钠小原晶α氧化铝的原晶粒度、Na_(2) O含量、粉体粒度分布以及烧结温度对陶瓷烧结性能的影响。研究结果表明原晶粒度越小、Na_(2) O含量越低、粉体粒度越细,所得氧化铝陶瓷越致密。以国内某公司的超低钠小原晶α氧化铝(Na_(2) O含量0.02%,原晶粒度0.2~0.5μm)为原料,将粉体磨至接近原晶粒度,然后通过造粒、干压所得生坯在1600~1620℃下烧结,陶瓷试块烧结密度达到理论烧结密度的99.5%以上,展现出优良的陶瓷烧结性能。The effects of protocrystalline size,Na_(2) O content,particle size distribution,sintering temperature and other factors on the sintering properties of ultra-low sodium small protocrystallineαalumina were studied by dry pressing process and rapid temperature raising sintering technology of ceramic test block.The results show that the smaller the protocrystalline size,the lower the Na_(2) O content,the finer the particle size,the denser the alumina ceramics,the better the sintering performance of the ceramics.With a company’s ultra-low sodium small protocrystallineαalumina(Na_(2) O 0.02%,protocrystalline size 0.2~0.5μm)as raw material,the ultra-fine powder grinding to close to the protocrystalline size,sintered at 1600~1620℃,the sintering density exceeds 99.5%of the theoretical sintering density,showing excellent ceramic sintering performance.

关 键 词：超低钠 小原晶α氧化铝 陶瓷烧结性能 烧结密度 

分 类 号：TQ[化学工程]