摘要
以经过"水洗"预处理除去可溶性盐后的铝灰为主要原料,采用熔融法在1550℃制得基础玻璃,在780℃形核3 h及880℃晶化3 h处理后,得到了主晶相为钙长石,副晶相为橄榄石和尖晶石的CaO-MgO-Al2O3-SiO2(CMAS)系列铝灰渣微晶玻璃。采用XRD、DTA、SEM、物化测试等分析方法研究了水洗后铝灰含量对试样析晶行为、显微组织形貌和密度等性能的影响。研究表明微晶玻璃试样无吸水性,致密度良好,硬度随着铝灰含量的增加而增大,随着铝灰含量的增加,耐酸腐蚀性能逐渐降低,耐碱腐蚀性能则逐渐增强。
Aluminum dross after the removal of soluble salts through"water washing"was used as the main raw material to develop glass-ceramics,where the basic glass was prepared by using the conventional melting method at 1550℃.The aluminum dross glass-ceramics,CaO-MgO-Al2O3-SiO2(CMAS),were obtained after the heat treatment process to induce nucleation(780℃for 3 h)and crystallization(880℃for 3 h).The main crystalline phase of the glass-ceramics is anorthite,the secondary phases include olivine and spinel.The effect of aluminum dross on crystallization behavior,microstructure and density of th e glass-ceramics was studied,by using XRD,DTA,SEM and physical/chemical property test s.It was found that the glass-ceramics exhibited high densities and had no water absorption.Hardness of the glass-ceramics was increased with increasing content of aluminum dross.In addition,the acid corrosion resistance was decreased,while the alkali corrosion resistance was enhanced.
作者
焦志伟
刘伟
周伟
刘茵
刘晓乐
刘峰斌
曹雷刚
JIAO Zhiwei;LIU Wei;ZHOU WeiLIU Yin;LIUXiaole;LIU Fengbin;CAO Leigang(College of Mechanic and Materials Engineering,North China University of Technology,Beijing 100144,China;Gansu Testing Technologies Co.Ltd,Lanzhou 730020,Gansu,China;Gansu Provincial Key Laboratory of Fine Chemicals,Lanzhou 730020,Gansu,China)
出处
《陶瓷学报》
CAS
北大核心
2020年第1期71-75,共5页
Journal of Ceramics
基金
国家自然科学基金(51575004)
甘肃省重点研发计划(17YF1GA006)
北京市教委面上项目(KM201610009005)
北京市自然科学基金(3162010)。
关键词
预处理铝灰
微晶玻璃
钙长石
硬度
耐酸碱腐蚀性能
pretreated aluminum dross
glass-ceramics
anorthite
hardness
acid and alkali corrosion resistance
