文献类型：期刊文献

中文题名：含钛添加剂对堇青石陶瓷热膨胀性能的影响

英文题名：Effects of Ti-bearing additives on thermal expansion of cordierite ceramics

作者：李萍[1];杜永娟[1];胡丽华[2];吴文艳[2];俞浩[2]

机构：[1]华东理工大学无机材料系,上海200237;[2]上海申泰新材料有限公司

年份：2002

卷号：36

期号：3

起止页码：139

中文期刊名：耐火材料

外文期刊名：Refractories

收录：Scopus;北大核心:【北大核心2000】；

语种：中文

中文关键词：热膨胀性能;堇青石陶瓷;添加剂;钛酸铝;氧化钛混合物;氧化铝

外文关键词：Cordierite ceramics,Thermal expansion rate,Additive,Aluminum titanate,Mixture of alumina and titania

摘要：以粘土、滑石、氧化铝微粉等为原料 ,于1370～ 14 0 0℃烧成 ,合成了堇青石陶瓷。研究了添加 5 %～ 2 0 %的钛酸铝 (AT )或 5 %～ 15 %的氧化铝(A)与氧化钛 (T)的混合物 (A与T的摩尔比 1∶1)对堇青石陶瓷的相组成及热膨胀率的影响。结果表明 :添加AT或A +T均能有效地降低材料的热膨胀率 ;XRD分析表明 ,在添加 15 %以上AT或添加10 %以上A +T的堇青石试样中形成了莫来石与钛酸铝晶体 ;SEM显微照片表明 ,引入AT或A +T均促进了堇青石的合成。从效果和节约能源考虑 ,应添加 10 %～ 15 %的A +T ,烧成温度为 14 0 0℃左右。
Cordierite ceramics were synthesized by firing green bodies at 1370～1400 ℃ using raw materials of clay,talc and alumina powders.Effects of 5%～20% aluminum titanate(AT) or 5%～15% mixture of alumina(A) and titania(T) (molar ratio 1∶1) on phase compositions and thermal expansion rates of the ceramics were researched.The dilatometric experiments showed that both AT and A+T can effectively decrease thermal expansion rate.XRD analysis results showed that mullite and aluminum titanate crystals were formed in samples containing more than 15% AT or those containing more than 10% A+T.SEM analysis indicated that either AT or A+T promotes the synthesis of cordierite and crystal growth.Adding 10%～15% A+T and sintering at temperature about 1400 ℃ should be the optimum condition for synthesizing cordierite ceramics.