氧化锌对熔渣微晶玻璃析晶及理化性能的影响
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摘要
以某贫铁矿制备的冶炼熔渣为主要原料,氧化锌为形核剂,采用熔融法制备熔渣微晶玻璃。利用DSC、XRD、SEM研究氧化锌对熔渣微晶玻璃析晶活化能、晶相、微观形貌及理化性能的影响。研究结果表明,随着氧化锌加入量的增加,熔渣微晶玻璃的转变温度和析晶温度逐渐降低,加入2 wt%氧化锌后析晶活化能降至最小。微晶玻璃表面晶体形貌由片状逐渐变为球状,微晶玻璃密度逐渐增加,耐碱腐蚀性逐渐增强,氧化锌含量小于4wt%时对耐酸腐蚀性影响不大。
Taken a poor-iron ore smelting slag as the main raw material,the slag-based glass ceramics was prepared by the melting method with zinc oxide as the nucleating agent. DSC,XRD,and SEM were used to study the effect of zinc oxide on the crystallization activation energy,crystallization phase,micromorphology,physical and chemical properties of the slag-based glass ceramics. The results show that with the increase of zinc oxide,the transition temperature and the crystallization temperature of the slagbased glass ceramics gradually decreases. The lowest crystallization activation energy is obtained at the addition of 2 wt% zinc oxide. With the increase of zinc oxide addition,the crystallization morphology of glass ceramics is gradually changed from flake to sphere,and the density and the anti-alkali corrosion of glass ceramics gradually increase,but little effect on the acid corrosion resistance is found as the zinc oxide amount is less than 4 wt%.
Taken a poor-iron ore smelting slag as the main raw material,the slag-based glass ceramics was prepared by the melting method with zinc oxide as the nucleating agent. DSC,XRD,and SEM were used to study the effect of zinc oxide on the crystallization activation energy,crystallization phase,micromorphology,physical and chemical properties of the slag-based glass ceramics. The results show that with the increase of zinc oxide,the transition temperature and the crystallization temperature of the slagbased glass ceramics gradually decreases. The lowest crystallization activation energy is obtained at the addition of 2 wt% zinc oxide. With the increase of zinc oxide addition,the crystallization morphology of glass ceramics is gradually changed from flake to sphere,and the density and the anti-alkali corrosion of glass ceramics gradually increase,but little effect on the acid corrosion resistance is found as the zinc oxide amount is less than 4 wt%.
引文
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[15]胡安民,梁开明,周锋,等.形核剂对Li2O-Al2O3-SiO2系微晶玻璃晶化过程的影[J].无机材料学报,2005,20(2):279-284.
[2]张升晓,岳钦艳,于慧,等.高炉渣制备微晶玻璃的研究[J].山东大学学报(理学版),2006,41(5):129-133.
[3]孙鹏,车玉满,郭天永,等.高炉渣综合利用现状与展望[J].鞍钢技术,2008,(3):6-9.
[4]贵永亮,谢春帅,宋春燕,等.高炉渣微晶玻璃研究进展与展望[J].中国陶瓷,2016,(3):1-5.
[5]戴培赞,戚凭,姜富城,等.ZnO对LMAS系微晶玻璃微波介电性能的影响[J].青岛大学学报(自然科学版),2006,19(4):22-26.
[6]汤李缨,王静,程金树,等.ZnO对MgO-Al2O3-SiO2微晶玻璃结构与透光性能的影响[J].硅酸盐学报,2011,39(1):147-151.
[7]戴长禄,杨勇,杨明.锌在建筑陶瓷坯体、釉料及微晶玻璃中的作用与影响[J].佛山陶瓷,2012,(4):29-32.
[8]Chen Guohua,Liu Xinyu.Sintering, crystallization and properties of MgO-Al2O3-SiO2 system glassceramics containing ZnO[J].Journal of Alloys and Compounds, 2007,431(1-2):282-286.
[9]陆雷,江勤,张乐军,等.ZnO添加剂对复合尾矿微晶玻璃的性能及显微结构的影响[J].矿产综合利用,2007,(1):22-25.
[10]徐明江,李波,唐波.ZnO取代BaO的钡硼硅微晶玻璃的性能与机理研究[J].压电与声光,2014,36(4):617-620.
[11]江自然,李明曦,樊星,等.热处理对CaO-MgOAl2O3-SiO2系微晶玻璃瓷砖釉面力学性能的影响[J].中国陶瓷,2011,47(6):54-57.
[12]刘红玉,孙元元,周元超,等.晶化温度对高炉渣微晶玻璃性能的影响[J].稀有金属材料与工程,2009,38(增刊2):674-677.
[13]王中杰,倪文,伏程红,等.镍渣-高炉矿渣微晶玻璃的制备与研究[J].矿物学报,2010,(S1):54-55.
[14]张凯.模拟热态钢渣直接熔制微晶玻璃的晶化规律[D].武汉:华中科技大学,2012.
[15]胡安民,梁开明,周锋,等.形核剂对Li2O-Al2O3-SiO2系微晶玻璃晶化过程的影[J].无机材料学报,2005,20(2):279-284.