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Effects of CeO2 and nano-ZrO2 agents on the crystallization behavior and mechanism of CaO–Al2O3–MgO–SiO2-based glass ceramics

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摘要 The crystallization behavior and mechanism of CaO–Al2O3–MgO–SiO2(CAMS)-based diopside glass ceramics with nano-ZrO2 nucleators and CeO2 agents have been investigated.The use of nanoscale ZrO2 as nucleators is favorable to the crystallization of glass ceramic at a relatively lower temperature due to the reduction of the activation energy, while the activation energy is increased after adding the CeO2 agent.The microstructure and orientation have been analyzed by scanning electron microscopy and electron backscatter diffraction.Two discernible layers are observed, featured in glass and crystalline phases, respectively.Remarkably textured polycrystalline diopsides are verified for the samples(A and B)free of CeO2 agents, with c-axes perpendicular to the interface of the two layers.Comparatively, the c-axes of diopside grains of the sample(C) with CeO2 agents are proved to be parallel to the interface.Nanocrystals are detected in the vicinity of the interface for sample C.
作者 张艳 石钰 张雪峰 胡凤霞 孙继荣 赵同云 沈保根 Yan Zhang;Yu Shi;Xuefeng Zhang;Fengxia Hu;Jirong Sun;Tongyun Zhao;Baogen Shen(不详)
出处 《中国物理B:英文版》 SCIE EI CAS CSCD 2019年第7期511-516,共6页 Chinese Physics B
基金 Project supported by the National Natural Sciences Foundation of China (Grant No. 51590881) the National Key Research Program of China (Grant No. 2016YFB0700903) the Inner Mongolia Science and Technology Major Project of China 2016, and the Fujian Institute of Innovation, Chinese Academy of Sciences (Grant No. FJCXY18040302).
作者简介 Corresponding Authors: Baogen Shen, E-mail: shenbaogen@yeah.net.
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