LAS低膨胀釉的析晶特性及其对抗热震性能的影响
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摘要
以锂辉石、透锂长石、钠长石、石英、粘土、滑石和碳酸钙为原料,采用生料釉工艺制备了与低膨胀堇青石陶瓷基体相匹配的Li_2O-Al_2O_3-SiO_2(LAS)低膨胀釉。研究了n(Li_2O)/n(Na_2O)对釉层晶相组成、显微结构及施釉后样品抗热震性的影响,探讨了β-锂辉石晶体的形成机制。结果表明,随n(Li_2O)/n(Na_2O)比增大,釉层析晶温度升高,玻璃相含量减少,釉层主晶相由β-石英固溶体转变为β-锂辉石固溶体,釉的热膨胀系数减小。覆有β-锂辉石质釉样品的抗弯强度比基体提高了20%,且具有优异的抗热震性。β-锂辉石质釉在烧成过程中经历了透锂长石熔融—石英溶解—β-锂辉石溶解—β-锂辉石熔融—冷却过程再析出β-锂辉石固溶体的变化。
Li_2O-Al_2O_3-SiO_2 system low thermal expansion glazes used on the low expansion cordierite ceramic substrates were prepared by preparation process of raw glaze using spodumene,petalite,feldspar,quartz,clay,talc and calcium carbonate as raw materials.The compositions of crystal phases and microstructure of the glazes with different mole ratio n(Li_2O)/n(Na_2O)and the thermal shock resistance of the samples with the glazes on surface were researched.The formation mechanism ofβ-spodumene crystals was discussed.The results show that with the increase ratio of n(Li_2O)/n(Na_2O)the crystallization temperature ascends,the content of glass phase in the glaze layer decreases,the main crystalline phases of the glazes changes fromβ-quartz solid solution intoβ-spodumene solid solution,and the thermal expansion coefficient of glazes also decreases.The flexural strength of sample withβ-spodumene glaze on its surface increases by 20%than the body,and the sample has excellent thermal shock resistance.In the sintering processβ-spodumene glaze experienced changes of petalite melt-quartz dissolved-β-spodumene dissolved-β-spodumene melt andβ-spodumene solid solution recrystallized at cooling process.
Li_2O-Al_2O_3-SiO_2 system low thermal expansion glazes used on the low expansion cordierite ceramic substrates were prepared by preparation process of raw glaze using spodumene,petalite,feldspar,quartz,clay,talc and calcium carbonate as raw materials.The compositions of crystal phases and microstructure of the glazes with different mole ratio n(Li_2O)/n(Na_2O)and the thermal shock resistance of the samples with the glazes on surface were researched.The formation mechanism ofβ-spodumene crystals was discussed.The results show that with the increase ratio of n(Li_2O)/n(Na_2O)the crystallization temperature ascends,the content of glass phase in the glaze layer decreases,the main crystalline phases of the glazes changes fromβ-quartz solid solution intoβ-spodumene solid solution,and the thermal expansion coefficient of glazes also decreases.The flexural strength of sample withβ-spodumene glaze on its surface increases by 20%than the body,and the sample has excellent thermal shock resistance.In the sintering processβ-spodumene glaze experienced changes of petalite melt-quartz dissolved-β-spodumene dissolved-β-spodumene melt andβ-spodumene solid solution recrystallized at cooling process.
引文
[1]Hununel F A.Thermal expansion properties of some synthetic lithia minerals[J].Journal of the American Ceramic Soeiety,1951,34(8):235-239.
[2]Roy R,Agrawal D K,Mckinstry H A.Very low thermal expansion coefficient materials[J].Annual Review of Materials Science,1989,19:59-81.
[3]Guedes M,Ferro A C,Ferreira J M F.Nucleation and crystal growth in commercial LAS composition[J].Journal of the European Ceramic Society,2001,21(9):1187-1194.
[4]Yang Tong,Liu Shiquan.Li2O-Al2O3-SiO2glass-ceramic coating on a porous silica ceramic[J].Journal of Alloys and Compounds,2014,600(5):51-54.
[5]Li Yaohui,Cao Jianwei,Lu Jinshan,et al.Stability of microstructure and properties of transparent Li2O-Al2O3-SiO2 glass-ceramics[J].Journal of Inorganic Materials,2009,24(5):1031-1035.李要辉,曹建尉,卢金山,等.锂铝硅微晶玻璃结构与性能热稳定性研究[J].无机材料学报,2009,24(5):1031-1035.
[6]Yin Hairong,Lu Chengzhen,Li Hui,et al.Research of the phase transition kinetics of the Li2O-Al2O3-SiO2 system based transparent zero expansion phosphorous glass-ceramics[J].Journal of Functional Materials,2009,40(1):92-96.殷海荣,吕承珍,李慧,等.含磷零膨胀LAS透明微晶玻璃的相转变动力学的研究[J].功能材料,2009,40(1):92-96.
[7]Tulyaganov D U,Agathopoulos S,Fernandes H R,et al.Synthesis of lithium aluminosilicate glass and glass-ceramics from spodumene material[J].Ceramics International,2004,30(6):1023-1030.
[8]Qin Changjie,Wang Houzhi,Gu Huazhi.Preparation of Li2O-MgO-Al2O3-SiO2system high temperature low-expansion glaze and its properties[J].Rare Materials and Engineering,2007,36(2):659-661.秦常杰,汪厚植,顾华志.Li2O-MgO-Al2O3-SiO2系高温低膨胀釉的制备[J].稀有金属材料与工程,2007,36(2):659-661.
[9]Zhang Xiaoli,Li Yong.Effect of wollastonite on properties of lithium aluminosilicate crystallite glaze[J].Journal of the Chinese Ceramic Society,2010,38(6):1093-1097.张晓丽,李勇.硅灰石对LAS系微晶釉料性能的影响[J].硅酸盐学报,2010,38(6):1093-1097.
[10]Cheng Jinshu,Li Shujing,Yang Fei.Effect of Na2O on high temperature viscosity and crystallization behavior of lithium aluminum silicate glass-ceramic[J].Journal of Wuhan University of Technology,2010,22(32):44-47.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,2010,22(32):44-47.
[11]Andrea Z,Cynthia M G,Enrico B,et al.LAS glass-ceramic scaffolds by three-dimensional printing[J].Journal of the European Ceramic Society,2013,33(9):1525-1533.
[12]Lu Anxian,Wang Yu,Xiao Zhuohao.Effects of alkalis on crystallization and properties of MgO-Al2O3-SiO2 system glass ceramics[J].Journal of Central South University,2008,39(1):42-47.卢安贤,王宇,肖卓豪.碱金属氧化物对MgO-Al2O3-SiO2系统微晶玻璃析晶和性能的影响[J].中南大学学报,2008,39(1):42-47.
[13]Kinggery W D,Bowen H K,Uhlmann D R.Introduction to ceramics[M].New York:John Wiley&Sons Inc,1976:609
[14]Hu Anming,Li Ming,Mao Dali,et al.Phase transition and properties of Li2O-Al2O3-SiO2system glass-ceramic with partial replacement of Al2O3by ZnO[J].Journal of the Chinese Ceramic Society,2005,33(8):990-995胡安民,李明,毛大立,等.ZnO取代部分Al2O3的Li2O-Al2O3-SiO2系微晶玻璃的相变和性能[J].硅酸盐学报,2005,33(8):990-995.
[2]Roy R,Agrawal D K,Mckinstry H A.Very low thermal expansion coefficient materials[J].Annual Review of Materials Science,1989,19:59-81.
[3]Guedes M,Ferro A C,Ferreira J M F.Nucleation and crystal growth in commercial LAS composition[J].Journal of the European Ceramic Society,2001,21(9):1187-1194.
[4]Yang Tong,Liu Shiquan.Li2O-Al2O3-SiO2glass-ceramic coating on a porous silica ceramic[J].Journal of Alloys and Compounds,2014,600(5):51-54.
[5]Li Yaohui,Cao Jianwei,Lu Jinshan,et al.Stability of microstructure and properties of transparent Li2O-Al2O3-SiO2 glass-ceramics[J].Journal of Inorganic Materials,2009,24(5):1031-1035.李要辉,曹建尉,卢金山,等.锂铝硅微晶玻璃结构与性能热稳定性研究[J].无机材料学报,2009,24(5):1031-1035.
[6]Yin Hairong,Lu Chengzhen,Li Hui,et al.Research of the phase transition kinetics of the Li2O-Al2O3-SiO2 system based transparent zero expansion phosphorous glass-ceramics[J].Journal of Functional Materials,2009,40(1):92-96.殷海荣,吕承珍,李慧,等.含磷零膨胀LAS透明微晶玻璃的相转变动力学的研究[J].功能材料,2009,40(1):92-96.
[7]Tulyaganov D U,Agathopoulos S,Fernandes H R,et al.Synthesis of lithium aluminosilicate glass and glass-ceramics from spodumene material[J].Ceramics International,2004,30(6):1023-1030.
[8]Qin Changjie,Wang Houzhi,Gu Huazhi.Preparation of Li2O-MgO-Al2O3-SiO2system high temperature low-expansion glaze and its properties[J].Rare Materials and Engineering,2007,36(2):659-661.秦常杰,汪厚植,顾华志.Li2O-MgO-Al2O3-SiO2系高温低膨胀釉的制备[J].稀有金属材料与工程,2007,36(2):659-661.
[9]Zhang Xiaoli,Li Yong.Effect of wollastonite on properties of lithium aluminosilicate crystallite glaze[J].Journal of the Chinese Ceramic Society,2010,38(6):1093-1097.张晓丽,李勇.硅灰石对LAS系微晶釉料性能的影响[J].硅酸盐学报,2010,38(6):1093-1097.
[10]Cheng Jinshu,Li Shujing,Yang Fei.Effect of Na2O on high temperature viscosity and crystallization behavior of lithium aluminum silicate glass-ceramic[J].Journal of Wuhan University of Technology,2010,22(32):44-47.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,2010,22(32):44-47.
[11]Andrea Z,Cynthia M G,Enrico B,et al.LAS glass-ceramic scaffolds by three-dimensional printing[J].Journal of the European Ceramic Society,2013,33(9):1525-1533.
[12]Lu Anxian,Wang Yu,Xiao Zhuohao.Effects of alkalis on crystallization and properties of MgO-Al2O3-SiO2 system glass ceramics[J].Journal of Central South University,2008,39(1):42-47.卢安贤,王宇,肖卓豪.碱金属氧化物对MgO-Al2O3-SiO2系统微晶玻璃析晶和性能的影响[J].中南大学学报,2008,39(1):42-47.
[13]Kinggery W D,Bowen H K,Uhlmann D R.Introduction to ceramics[M].New York:John Wiley&Sons Inc,1976:609
[14]Hu Anming,Li Ming,Mao Dali,et al.Phase transition and properties of Li2O-Al2O3-SiO2system glass-ceramic with partial replacement of Al2O3by ZnO[J].Journal of the Chinese Ceramic Society,2005,33(8):990-995胡安民,李明,毛大立,等.ZnO取代部分Al2O3的Li2O-Al2O3-SiO2系微晶玻璃的相变和性能[J].硅酸盐学报,2005,33(8):990-995.