Materials Reports  2020, Vol. 34 Issue (Z1): 94-96 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Crystallization of Jadeite Glass Material Induced by Seed Crystal UnderAtmospheric Pressure |
| GUO Zhichao1, ZANG Jinhao2, WANG Jinlong1, LIU Yan1
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1 College of Physics and Electronic Engineering, Xinxiang University, Xinxiang 453003, China;
2 School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China |
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Abstract Jadeite maybe was formed in metamorphic rocks under high pressure and relatively high temperature conditions. According to this statement, the exploration of artificial synthesis jadeite was generally carried out under this harsh preparation conditions, which make the manufacturing cost higher, and the products were not commercialized. The core issue of the synthesis jadeite was the difficulty in the transformation from vitreous substance to jadeite mineral crystals, which was also the bottleneck in the exploration and development of low-cost synthetic jadeite. Aiming at the problem of crystallization of jadeite glass, the present paper we prepared jadeite sample by seed-induced crystallization under atmospheric pressure. The XRD results of the sample showed that the crystals of the synthesized samples were jadeite (NaAlSi2O6). Utilizing optical microscopy, SEM and TEM, mesoscopic and microstructure of the sample were investigated systematically. The flake structure and micro cracks were observed on the surface of the sample by optical microscopy, the SEM results show that the lamellar crystals and flower-like structure of lamellar clusters in sample, and the TEM results show that the samples have complete lattice fringes with different orientations. Due to the existence of micro-voids and macro-cracks in the samples, the prepared samples were unsatisfactory as gemstones. However, the transformation from jadeite vitreous to NaAlSi2O6 mineral crystals were realized under atmospheric pressure.
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Published: 01 July 2020
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| Fund:This work was financially supported by the National Natural Science Foundation Youth Fund of China (1170050821), the Key Scientific Research Projects in Colleges and Universities (17A140026). |
| About author:: Zhichao Guo received his Ph.D. degree in materials from Beijing University of Technology in 2013. After he finished his post-doctoral research in 2016, he is currently an lecturer in Xinxiang University and participates in the development of synthesis materials and crystallographic analysis. |
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