不同分子比电解质对铝硅质耐火材料抗侵蚀性的影响  

Effect of electrolytes with different molecular ratio on corrosion resistance of alumino-silicate refractories

作　　者：黄晨 陈贵华 张欣 谢文 Huang Chen;Chen Guihua;Zhang Xin;Xie Wen(School of Materials Science and Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Zigong Cemented Carbide Co.,Ltd.,Zigong 643011,China)

机构地区：[1]湖南科技大学材料科学与工程学院,湘潭411201 [2]自贡硬质合金有限责任公司,自贡643011

出　　处：《耐火与石灰》2021年第6期9-12,共4页Refractories & Lime

摘　　要：以化学试剂NaF、AlF_(3)和Na_(3)AlF_(6)配制不同分子比电解质,借助影像式烧结点试验仪大致测定电解质的熔点,借助静态坩埚法研究不同分子比电解质对耐火材料(铝硅比为20∶80)的侵蚀性,以CRC值表征耐火材料抗侵蚀系数。研究结果表明,电解质的熔点随NaF/AlF_(3)分子比的增加而增大;分子比为3.0时对耐火材料的侵蚀性最小,增加或降低分子比都将增大对耐火材料的侵蚀性,尤其分子比大于3.0对耐火材料的侵蚀性显著增大,说明NaF对耐火材料的侵蚀性大于AlF_(3)。Different molecular ratio electrolytes were prepared with chemical reagents NaF,AlF_(3) and Na_(3)AlF_(6),the melting point of electrolytes was roughly determined by image sintering point tester,and the corrosion resistance of different molecular ratio electrolytes to refractories(aluminum-silicon ratio is 20∶80)was studied by static crucible method.The corrosion resistance coefficient of refractory was characterized by CRC value.The research results show that the melting point of the electrolyte increases with the increase of the NaF/AlF_(3)molecular ratio;When the molecular ratio is 3.0,the corrosion resistance of the refractory is the least,and the increase or decrease of the molecular ratio will increase the corrosiveness to refractory,especially the corrosion of refractories with molecular ratio greater than 3.0 increases significantly,which indicates that the corrosion resistance of NaF to refractories is greater than AlF_(3).

关 键 词：电解质分子比 铝硅质耐火材料 抗侵蚀性 

分 类 号：TQ175.712[化学工程—硅酸盐工业]