NDLI: Crystallization and microstructural evolution of MgO–Al$_{2}$O$_{3}$–SiO$_{2}$–TiO$_{2}$–La$_{2}$O$

Content Provider	Springer Nature Link
Author	Wang, Hui Juan Zscheckel, Tilman Li, Bo Tao Lin, Hui Xing Bocker, Christian Rüssel, Christian Luo, Lan
Copyright Year	2016
Abstract	Crystallization and microstructure of glasses with the molar compositions 1MgO·1.2Al$_{2}$O$_{3}$·2.8SiO$_{2}$·1.2TiO$_{2}$·xLa$_{2}$O$_{3}$ (x = 0.1 and 0.4) were thermally treated at different temperatures in the range from 950 to 1250 °C and then analyzed by X-ray diffraction and scanning electron microscopy, in combination with energy-dispersive X-ray spectroscopy and electron backscatter diffraction. It was found that the microstructure is first homogeneous with the precipitation of randomly distributed crystals and then indialite domains with embedded perrierite and rutile crystals are formed. For higher temperatures or prolonged times, more domains appear and expand into the bulk of the sample. Finally, the entire sample consists of the indialite domains and the boundaries that are enriched in rutile, perrierite, and magnesium aluminotitanate. Nevertheless, very distinct differences are observed between the samples with different La$_{2}$O$_{3}$ concentrations. For the sample with x = 0.4, the domains were detected at lower temperatures, while the quantity and size of the domains increase faster due to the promoted precipitation of indialite. For the sample with x = 0.1, in addition to the domain boundaries, secondary boundaries between the “regions” (assemblages of the domains) are observed in a larger length scale. The average size of the crystalline phases found between the “regions” is larger than that typically observed at the domain boundaries. The sizes of the crystals at the boundaries decrease with higher concentrations of La$_{2}$O$_{3}$, and the crystals (especially perrierite) within the domains become larger, resulting in a more homogeneous microstructure. This results in better dielectric properties, i.e., much higher quality factor for the sample with x = 0.4 in comparison to that with x = 0.1 after heat-treatment at 1150 or 1250 °C.
Starting Page	1330
Ending Page	1347
Page Count	18
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	52
Issue Number	3
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2016-09-26
Publisher Place	New York
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 and Scattering Methods Classical Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Effect of replacement of MgO by CaO on sintering, crystallization and properties of MgO–Al$_{2}$O$_{3}$–SiO$_{2}$ system glass-ceramics

Effect of the ZrO$_{2}$ concentration on the crystallization behavior and the mechanical properties of high-strength MgO–Al$_{2}$O$_{3}$–SiO$_{2}$ glass–ceramics

Effect of Y$_{2}$O$_{3}$ on the crystallization behavior of SiO$_{2}$–MgO–B$_{2}$O$_{3}$–Al$_{2}$O$_{3}$ glasses

Phase formation and microstructure during laser sintering and crystallization of a 4.2 MgO·5.0 ZnO·44.1 CaO·26.7 Al$_{2}$O$_{3}$·20.0 SiO$_{2}$ glass

Elastic properties of quaternary glasses in the MgO–CaO–Al$_{2}$O$_{3}$–SiO$_{2}$ system: modelling versus measurement

Glasses and glass-ceramics in the SrO–TiO$_{2}$–Al$_{2}$O$_{3}$–SiO$_{2}$–B$_{2}$O$_{3}$ system and the effect of P$_{2}$O$_{5}$ additions

High strength glass–ceramics in the system MgO/Y$_{2}$O$_{3}$/Al$_{2}$O$_{3}$/SiO$_{2}$/ZrO$_{2}$ without quartz as crystalline phase

Effect of the addition of CaO–MgO–SiO$_{2}$ glass on the sintering and mechanical properties of Al$_{2}$O$_{3}$/3Y-TZP composites

Effect of Y$_{2}$O$_{3}$ and CeO$_{2}$ on the crystallisation behaviour and mechanical properties of glass–ceramics in the system MgO/Al$_{2}$O$_{3}$/SiO$_{2}$/ZrO$_{2}$

Crystallization and microstructural evolution of MgO–Al$_{2}$O$_{3}$–SiO$_{2}$–TiO$_{2}$–La$_{2}$O$_{3}$ glass-ceramics

Similar Documents

Effect of replacement of MgO by CaO on sintering, crystallization and properties of MgO–Al$_{2}$O$_{3}$–SiO$_{2}$ system glass-ceramics

Effect of the ZrO$_{2}$ concentration on the crystallization behavior and the mechanical properties of high-strength MgO–Al$_{2}$O$_{3}$–SiO$_{2}$ glass–ceramics

Effect of Y$_{2}$O$_{3}$ on the crystallization behavior of SiO$_{2}$–MgO–B$_{2}$O$_{3}$–Al$_{2}$O$_{3}$ glasses

Phase formation and microstructure during laser sintering and crystallization of a 4.2 MgO·5.0 ZnO·44.1 CaO·26.7 Al$_{2}$O$_{3}$·20.0 SiO$_{2}$ glass

Elastic properties of quaternary glasses in the MgO–CaO–Al$_{2}$O$_{3}$–SiO$_{2}$ system: modelling versus measurement

Glasses and glass-ceramics in the SrO–TiO$_{2}$–Al$_{2}$O$_{3}$–SiO$_{2}$–B$_{2}$O$_{3}$ system and the effect of P$_{2}$O$_{5}$ additions

High strength glass–ceramics in the system MgO/Y$_{2}$O$_{3}$/Al$_{2}$O$_{3}$/SiO$_{2}$/ZrO$_{2}$ without quartz as crystalline phase

Effect of the addition of CaO–MgO–SiO$_{2}$ glass on the sintering and mechanical properties of Al$_{2}$O$_{3}$/3Y-TZP composites

Effect of Y$_{2}$O$_{3}$ and CeO$_{2}$ on the crystallisation behaviour and mechanical properties of glass–ceramics in the system MgO/Al$_{2}$O$_{3}$/SiO$_{2}$/ZrO$_{2}$

Crystallization and microstructural evolution of MgO–Al$_{2}$O$_{3}$–SiO$_{2}$–TiO$_{2}$–La$_{2}$O$_{3}$ glass-ceramics