Effects of heat treatment on the morphological and crystallization behaviors of cadmium-silicate glasses and films
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- 作者：Il-Gu Kim ; Jong-Hwan Kim ; Jae-Yeop Jung…
- 关键词：Cadmium ; borosilicate glass ; Film ; Phase separation ; Morphology ; Crystallization ; Photoresponsivity
- 刊名：Journal of the Korean Physical Society
- 出版年：2014
- 出版时间：September 2014
- 年：2014
- 卷：65
- 期：5
- 页码：657-663
- 全文大小：1,559 KB
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Jong-Hwan Kim (1)
Jae-Yeop Jung (1)
Su-Yeon Choi (1)
Hyun-Jun Park (1)
Bong-Ki Ryu (1)
1. Department of Materials Science and Engineering, Pusan National University, Pusan, 609-735, Korea - ISSN：1976-8524
文摘
The authors report the effects of heat treatment on the morphological and the crystallization behaviors of a photoresponsive 65CdO-17.5B2O3-17.5SiO2 (mol%) bulk glass and its film. The bulk glass exhibited a clear phase-separation morphology when heat treated at 575 °C for 1 h, and started to crystallize preferentially into phases with high CdO contents after heat treatment at 595 °C. Heat treatment of the films at 575 °C for 2 h resulted in simultaneous phase separation and crystallization. The morphology of the film heat treated at 575 °C was found to comprise discontinuous CdO-poor phases formed in the matrix of a CdO-rich phase; however, these discontinuous phases became interconnected upon subsequent heat treatment at temperatures over 575 °C. Various phases were formed concurrently by crystallization, with relatively large crystals of high CdO content preferentially formed in the CdO-rich phase whereas small crystals of low CdO content formed in the CdO-poor phase. The main crystals of the heat-treated films were found to be transformed into crystal phases with higher CdO contents with increasing heat-treatment temperature, and this is likely caused by a change in the composition related to phase separation.