全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
材料工程  2010 

氟对锂铝硅系统玻璃结构及析晶的影响

Keywords: 锂铝硅微晶玻璃,玻璃结构,黏度,析晶

Full-Text   Cite this paper   Add to My Lib

Abstract:

通过引入氟以降低锂铝硅玻璃的高温黏度,使“温度-黏度”曲线适应浮法工艺的需求,并采用激光拉曼光谱、XRD、高温旋转黏度计等测试手段研究氟对锂铝硅系统玻璃的结构及随后析晶的影响.结果表明氟的引入使母体玻璃网络结构中的[Si(Al)O4]四面体相互之间形成的环结构向小环结构发展,[Si(Al)O4]四面体之间的相互连接程度降低,Si(Al)—O—Si(Al)键的振动减弱,从而能有效地降低母体玻璃的高温黏度.随着氟引入量从0.00mol增加到0.28mol,母体玻璃在晶化过程中析出的主晶相并未发生改变,皆为β-锂辉石固溶体,且析出的主晶相含量随氟引入量的增加而增加.此外,结合Raman光谱分析可以发现,试样中有微量的锐钛矿晶相析出.

References

[1]  JAMES P F.Glass ceramics:new composition and uses[J].J Non-Cryst Solids,1995,181(1):1-15.
[2]  BEALL G H,PINCKNEY L R.Nanophase glass-ceramics[J].J Am Ceram Soc,1999,82(1):5-15.
[3]  GUO X Z,YANG H,CAO M.Nucleation and crystallization behavior of Li2O-Al2O3-SiO2 system glass-ceramic containing little fluorine and no-fluorine[J].J Non-Cryst Solids,2005,351(24):2133-2137.
[4]  张彪.氟化物在玻璃中的作用[J].玻璃,1987,(2):21-22.
[5]  楼贤春,程金树,郑伟宏,等.锂铝硅系统微晶玻璃热处理制度优化研究[J].玻璃,2005,32(3):7-10.
[6]  SHARMA S K,SIMONS B.Raman study of crystalline polymorphs and glasses of spodumene composition quenched from various pressures[J].Am Mineral,1981,66(1):118-126.
[7]  AMAULT L,GERLAND M,RIVERE A.Microstructural study of two LAS-type glass-ceramics and their parent glass[J].J Mater Sci,2000,35(9):2331-2345.
[8]  SIEBERS F,BEUDT H W,RUDINGER B,et al.Optically detectable,floatable arsenic and antimony-free,glazable lithium-aluminosilicate glass[P].USA Patent:0259767.2007-11-08.
[9]  ZHENG W H,CHENG J S,TANG L Y,et al.Effect of Y2O3 addition on viscosity and crystallization of the lithium aluminosilicate glasses[J].Thermochim Acta,2007,456(1):69-74.
[10]  HU A M,LIANG K M,PENG F,et al.Crystallization and microstructure changes in fluorine-containing Li2O-Al2O3-SiO2 glasses[J].Thermochim Acta,2004,413(1):53-55.
[11]  GUO X Z,YANG H,HAN C,et al.Nucleation of lithium aluminosilicate glass containing complex nucleation agent[J].Ceramics International,2007,33(7):1375-1379.
[12]  GUO X Z,YANG H,HAN C,et al.Crystallization and microstructure of Li2O-Al2O3-SiO2 glass containing complex nucleating agent[J].Thermochimica Acta,2006,444(2):201-205.
[13]  BAE S J,KANG U,DYMSHITS O S,et al.Raman spectroscopy study of phase transformations in titania-containing lithium aluminosilicate glasses doped with CoO[J].J Non-Cryst Solids,2005,351(37):2969-2978.
[14]  GALEENER F L,BARRIO R A,MARTINEZ E,et al.Vibrational decoupling of rings in amorphous solids[J].Phys Rev Lett,1984,53(25):2429-2432.
[15]  OKUNO M,ZOTOV N,SCHMUCKER M,et al.Structure of SiO2-Al2O3 glasses Combined X-ray diffraction,IR and Raman studies[J].J Non-Cryst Solids,2005,351(12):1032-1038.
[16]  西北轻工业学院.玻璃工艺学[M].北京:中国轻工业出版社,1982.
[17]  肖萍,郑少波,尤静林,等.钛氧化物结构及其拉曼光谱表征[J].光谱学与光谱分析,2007,27(5):936-939.
[18]  ROOS C,BECKER O,SIEBERS F.Microstructure and stresses in a keatite solid-solution glass ceramic[J].J Mater Sci,2007,42(1):50-58.
[19]  NORDMANN A,CHENG Y B.Crystallization behaviour and microstructural evolution of a Li2O-Al2O3-SiO2 glass derived from spodumene mineral[J].J Mater Sci,1997,32(1):83-89.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133