Bi_2O_3对锂镁铝硅微晶玻璃结构与性能的影响研究
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摘要
Bi2O3能够有效降低基础玻璃的熔化温度,在锂镁铝硅系统微晶玻璃中加入不同质量含量的Bi2O3后,采用DSC,XRD,FESEM以及高分辨透射电镜等测试手段进一步研究了Bi2O3对微晶玻璃结构及性能的影响。研究结果显示,微晶玻璃中析出的主要晶相为β-锂辉石和锂辉石固溶体,加入量为质量分数1.0%时,能够降低微晶玻璃晶化温度约25℃。Bi2O3质量含量为1.0%时微晶玻璃的热膨胀系数最小,但是微晶玻璃的抗折强度与Bi2O3的含量没有明显的线性关系,随着Bi2O3含量的增加,晶粒的尺寸呈现变小的趋势。
The melt temperature of parent glass can be reduced effectively by Bi2O3.When the different contents of was introduced into the LMAS glass ceramics,DSC/XRD/FESEM/TEM tests were employed to study the influence of Bi2O3 on the structure and performance of LMAS glass ceramics.The experimental results indicated that beta spodumene and spodumene solid solution were the two prior phases,the crystallization temperature can be reduced about 25℃ when1.0% Bi2O3 was added,and the coefficients of thermal expansion(TECs)of the LMAS glass ceramics showed the lowest level.Its bending strength does not show linear change with Bi2O3 addition,while the dimension of crystal grain tends to decrease with more Bi2O3 incorporation.
The melt temperature of parent glass can be reduced effectively by Bi2O3.When the different contents of was introduced into the LMAS glass ceramics,DSC/XRD/FESEM/TEM tests were employed to study the influence of Bi2O3 on the structure and performance of LMAS glass ceramics.The experimental results indicated that beta spodumene and spodumene solid solution were the two prior phases,the crystallization temperature can be reduced about 25℃ when1.0% Bi2O3 was added,and the coefficients of thermal expansion(TECs)of the LMAS glass ceramics showed the lowest level.Its bending strength does not show linear change with Bi2O3 addition,while the dimension of crystal grain tends to decrease with more Bi2O3 incorporation.
引文
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[2]陈建华,孙方明.锂铝硅微晶玻璃[J].材料导报,1995(5):42-46.
[3]范仕刚,余明清,赵春霞,等.超低膨胀微晶玻璃应用及发展现状[J].人工晶体学报,2012,41(S1):210-214.
[4]Guo Xingzhong,Yang Hui.Effects of Fluorine on Crystallization,Structure and Performances of Lithium Aluminosilcate Glass Ceramic[J].Materials Research Bulletin,2006,41(2):396-405.
[5]Riello P,Canton P,Comelato N,et al.Nucleation and Crystallization Behavior of Glass-ceramic Materials in the Li2O-Al2O3-SiO2System of Interest for Their Transparency Properties[J].Journal of Non-Crystalline Solids,2001,288(1-3):127-139.
[6]张文涛,何峰,刘次启,等.Bi2O3对钠钙硅玻璃熔体性质的影响研究[J].陶瓷学报,2012,33(2):167-171.
[7]Perez J M,Casasola R,Ma Rincon J,et al.Nucleation and Crystallization Kinetics of a Na-fluorrichterite Based Glass by Differential Scanning Calorimetry(DSC)[J].Journal of Non-Crystalline Solids,2012,358(20):2741-2748.
[8]赵莹,陆雷,张乐军,等.晶化温度对Li2O-Al2O3-SiO2系微晶玻璃析晶和显微结构的影响[J].材料导报,2007,21(S3):360-363.
[9]程金树,李淑晶,杨飞.Na2O对LAS微晶玻璃高温粘度及析晶的影响[J].武汉理工大学学报,2010,32(22):44-47.
[10]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响[J].无机材料学报,2005,20(2):279-284.
[11]Nia A Faeghi.Thermal Properties and Crystallization of Lithium-mica Glass and Glass-ceramics[J].Thermochimica Acta,2013,564:1-6.
[12]Zhang Peixin,Lin Rongyi.Crystallization Process of SiO2-Al2O3-CaO-Fe2O3System Glass-ceramics[J].The Chinese Journal of Nonferrous Metals,2000,10(5):752-756.
[13]Li Bin,Qi Linlin.Effect of TiO2in Slags Bearing Titanium on Nucleation and Crystallization of Glass[J].The Chinese Journal of Nonferrous Metals,2000,10(1):117-119.
[14]张翠玲,陆雷,王永志,等.不同MgO/Al2O3的LMAS系微晶玻璃的显微结构和性能的研究[J].中国陶瓷,2010,46(2):26-29.
[15]程慷果,万菊林,梁开明.云母微晶玻璃析晶动力学的研究[J].硅酸盐学报,1997,25(5):567-572.
[16]赵运才,肖汉宁,谭伟.耐磨铝硅酸盐玻璃陶瓷的制备及其耐磨性能[J].中国有色金属学报,2003,13(2):475-479.
[17]Laczka M,Laczka K,Cholewa-Kowalska K,et al.Mechanical Properties of a Lithium Disilicate Strengthened Lithium Aluminosilicate Glass-ceramic[J].Journal of the American Ceramic Society,2013,97(2):361-364.