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Preparation and characterization of cordierite glass–ceramics for bonding solar thermal transmission pipelines
Author(s) -
Wu Jianfeng,
Ding Chunjiang,
Xu Xiaohong,
Xu Xiaoyang
Publication year - 2021
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13732
Subject(s) - materials science , cordierite , thermal shock , frit , ceramic , crystallization , microstructure , composite material , thermal expansion , mineralogy , chemical engineering , chemistry , engineering
TiO 2 was employed to develop cordierite glass–ceramics for thermal transmission pipeline binders by a melt‐quenching method. The effects of TiO 2 on the phase composition, microstructure, and physical properties of glass–ceramics were studied. In addition, the thermal shock resistance of the glass–ceramics based binder was investigated. The results showed the formation of α cordierite could be increased by adding 1.0 wt% TiO 2 , thereby improving bending strength and decreasing the coefficient of thermal expansion. However, a 3‐5 wt% TiO 2 additive resulted in massive generation of µ cordierite, which exhibited a negative effect on the above performances. After crystallization at 1000°C for 2 h, sample B1 (1 wt% TiO 2 additional) displayed the best overall properties. It was demonstrated that cordierite glass–ceramics were satisfactory materials as heat transmission pipeline binders when the C2 binder (40 wt% frit, 60 wt% as‐prepared sample B1) was applied, which had a good thermal shock resistance.