Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 657, Issue -, Pages 231-236Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.10.106
Keywords
Lithium zinc magnesium silicate glass-ceramic; High thermal expansion; Micro-hardness; Sealing test
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Funding
- National Natural Science Foundation of China [51202098, 11465010, 51362013]
- National Key Technology R&D Program of China [2011BAC11B08]
- Natural Science Foundation of Jiangxi Province [20133ACB21008, 20132BAB206009, 20114BAB216021, GJJ14649]
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Lithium zinc magnesium silicate glass ceramics were prepared by conventional melt-quenching technique and subsequently converted to glass-ceramics by a controlled nucleation and crystallization process. The nucleation and crystallization temperatures were determined by DSC curve. Crystalline phases were identified using powder X-ray diffraction technique and microstructures were observed by SEM images. The effects of heat treatment temperature on some thermo-physical properties, such as coefficient of thermal expansion (CTE), bend strength and Vickers micro-hardness of glass-ceramics were investigated in detail. The CTE, bend strength and micro-hardness of the optimized glass-ceramic is found to be 16.64 x 10(-6) degrees C-1, 121.23 MPa and 6.65 GPa, respectively. The test on sealing to SUS310S stainless steel was also carried out as a possible application in filtration device to purify the dust-contained high temperature exhaust. (C) 2015 Elsevier B.V. All rights reserved.
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