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Preparation and Characteristic of Glass-Ceramics with Super Low Thermal Expansion Coefficient
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作者 Zhao Chunxia Fan Shigang Chen Guangle Jiang Hui Wang Shengjun Wang Kun 《Journal of Rare Earths》 SCIE EI CAS CSCD 2006年第z1期119-121,共3页
The preparation technics of glass-ceramics with super low coefficient of thermal expansion containing β-quartz solid solution as a main crystal phase based on the glass in the system Li2O-Al2O3-SiO2 was introduced. T... The preparation technics of glass-ceramics with super low coefficient of thermal expansion containing β-quartz solid solution as a main crystal phase based on the glass in the system Li2O-Al2O3-SiO2 was introduced. The composition of base glass, technics of melting and heat treatment effecting on characteristic of glass-ceramics was described. Specimens were prepared by melting, anneal and controlled two steps heat treatment. Crystal phase, microstructure and elementary distributing were studied by using XRD, SEM and EDS respectively. Prepared specimens show excellent transparency and super low thermal expansion coefficient of 2×10-8 ·K-1, which reaches international advanced level. 展开更多
关键词 low thermal expansion LI2O-AL2O3-SIO2 TRANSPARENT glass-ceramics
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Effect of Na_(2)O Content on the Structure and Properties of LAS Glass-ceramics Prepared by Spodumene 被引量:1
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作者 ZHOU Zhiqiang HE Feng +3 位作者 SHI Mingjuan XIE Junlin WAN Peng CAO Dahua 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2022年第5期794-800,共7页
The Li_(2)O-Al_(2)O_(3)-SiO_(2) (LAS) glass-ceramics with low lithium content were prepared from spodumene mineral by melting method.XRD,DSC,and FTIR were used to study the crystallization process and structure of the... The Li_(2)O-Al_(2)O_(3)-SiO_(2) (LAS) glass-ceramics with low lithium content were prepared from spodumene mineral by melting method.XRD,DSC,and FTIR were used to study the crystallization process and structure of the samples.The results showed that the addition of Na_(2)O promoted the precipitation of β-quartz solid solution and its transformation to β-spodumene solid solution.Mechanical performance tests and FESEM indicated that the larger grain size and inhomogeneous grain dispersion caused by the increase of Na_(2)O content led to lower mechanical properties.In addition,low expansion glass-ceramics were prepared by an appropriate heat treatment according to DSC result,and when Na_(2)O content was in the range of 1.22 wt% to 2.41 wt%,the average coefficient of thermal expansion (CTE) (30-300 ℃) increased from-5.810 ×10^(-7 )to 5.322×10^(-7)℃^(-1). 展开更多
关键词 low thermal expansion Na_(2)O content LAS glass-ceramics SPODUMENE
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利用锂辉石尾矿研制低膨胀微晶玻璃 被引量:4
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作者 孙小卫 张民福 +2 位作者 张辉旭 张金青 邱长青 《中国陶瓷工业》 CAS 2009年第3期5-7,4,共4页
利用新疆可可托海锂辉石矿尾矿研制出了低膨胀微晶玻璃,用尾矿代替部分常规原料能够降低原料成本,降低熔化温度,为尾矿综合利用开辟了新的途径。通过实验探讨了低膨胀微晶玻璃的成分、热处理制度与其性能之间的关系。
关键词 尾矿 低膨胀.微晶玻璃
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