NDLI: Study of relationships among synthesis, microstructure and mechanical properties of lithium aluminosilicate glass-ceramics containing ZnO and MgF$

Content Provider	Springer Nature Link
Author	Wu, Yu Han Hsu, Kuo Chuan Lee, Chih Hao
Copyright Year	2013
Abstract	The effect of MgF$_{2}$ and ZnO as additives on the microstructure evolution of a lithium aluminosilicate glass-ceramic is studied by X-ray powder diffraction and X-ray absorption near edge structure. The changes of main, secondary phase development and morphology under different additive concentrations are responsible for the variation in flexural strength. The decreased flexural strength (>50 %) of MgF$_{2}$-bearing samples can be attributed to the non-uniform microstructure, while the increased flexural strength of the ZnO-doped samples might be due to the decreased residual stress resulting from a reduction of viscosity. In addition, the structural role of Zn ions is changed under different phase evolutions. For highly crystalline samples with commercial-like composition, Zn ions tend to have spinel-like local environments; while in a simplified composition, Zn ions favor hexagonal ZnO-like surroundings. The appearance of significant multiple scattering peaks in the near edge structure indicates Zn ions usually presented in an ordered local environment in high doping level samples (>1 % ZnO or MgF$_{2}$).
Starting Page	4427
Ending Page	4437
Page Count	11
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	48
Issue Number	12
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2013-03-08
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Characterization and Evaluation of Materials Polymer Sciences Continuum Mechanics and Mechanics of Materials Crystallography Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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