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In situ preparation, microstructure and properties of anorthite ceramic thin plates by concentrated solar power furnace.

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Title: In situ preparation, microstructure and properties of anorthite ceramic thin plates by concentrated solar power furnace.
Authors: Wu, Jianfeng1 (AUTHOR), Wang, Dong1 (AUTHOR) wangdong202300@163.com, Xu, Xiaohong1 (AUTHOR), Shen, Yaqiang1 (AUTHOR), Qiu, Saixi1,2 (AUTHOR), Zhang, Deng1,2 (AUTHOR), Zhang, Yu1 (AUTHOR), Liu, Tong1 (AUTHOR)
Source: Ceramics International. Apr2026:Part B, Vol. 52 Issue 9, p12909-12923. 15p.
Subjects: Anorthite, Ceramic tiles, Solar energy, Chemical synthesis, Photothermal conversion, Microstructure, Properties of matter
Abstract: To reduce environmental pollution from conventional energy sources in building material production, anorthite ceramic thin plates were prepared in situ by electric furnaces (EF) and concentrated solar power furnaces (CSPF) respectively in this study. The effects of these two firing methods on the physical properties and microstructure of the ceramic thin plates were investigated. The results indicated that the samples fired by CSPF exhibit superior properties, with bending strength of 86.22 MPa, water absorption of 0.15 %, porosity of 0.38 %, density of 2.62 g/cm3 vickers hardness of 7.66 GPa and fracture toughness of 2.51 MPa•m1/2. Under concentrated photon irradiation, anorthite was synthesized in situ via phase separation-nucleation-crystallization, leading to more uniform grain size and higher density. The solar absorber ZnO (SA-ZnO) not only enhanced the solar absorptivity of the green body by 15.4 %, thereby promoting photothermal conversion, but also participated in the reaction, yielding new phases of hardystonite and a highly stable gahnite phase, which improved the physical properties of the sample. This study confirms the feasibility of utilizing concentrated solar energy for the production of ceramic thin plates, providing a theoretical basis and data support for the large-scale solar-driven fabrication of ceramic thin plates in the future. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:To reduce environmental pollution from conventional energy sources in building material production, anorthite ceramic thin plates were prepared in situ by electric furnaces (EF) and concentrated solar power furnaces (CSPF) respectively in this study. The effects of these two firing methods on the physical properties and microstructure of the ceramic thin plates were investigated. The results indicated that the samples fired by CSPF exhibit superior properties, with bending strength of 86.22 MPa, water absorption of 0.15 %, porosity of 0.38 %, density of 2.62 g/cm3 vickers hardness of 7.66 GPa and fracture toughness of 2.51 MPa•m1/2. Under concentrated photon irradiation, anorthite was synthesized in situ via phase separation-nucleation-crystallization, leading to more uniform grain size and higher density. The solar absorber ZnO (SA-ZnO) not only enhanced the solar absorptivity of the green body by 15.4 %, thereby promoting photothermal conversion, but also participated in the reaction, yielding new phases of hardystonite and a highly stable gahnite phase, which improved the physical properties of the sample. This study confirms the feasibility of utilizing concentrated solar energy for the production of ceramic thin plates, providing a theoretical basis and data support for the large-scale solar-driven fabrication of ceramic thin plates in the future. [ABSTRACT FROM AUTHOR]
ISSN:02728842
DOI:10.1016/j.ceramint.2026.01.430