Thermal shock behavior of andalusite-based refractories: Microstructural investigation of crack bridging and grain-matrix interactions

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2024-09-13 DOI:10.1111/jace.20117

Dominik Hahn, Jong-Won Shin, David Tissen, Almuth Sax, Peter Quirmbach

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引用次数: 0

Abstract

Andalusite-based refractories are characterized by superior thermal shock resistance. Although the demand for alternative raw materials is increasing, it is proving difficult to replicate the thermal shock behavior of andalusite with alternative materials. The physico-mechanical properties of andalusite refractories are well-studied. However, comprehensive chemical and microstructural analysis is still needed to fully understand factors influencing the thermal shock resistance. This investigation highlights the use of complementary microstructural techniques (3D digital microscopy, scanning electron microscopy–energy-dispersive X-ray spectroscopy, and micro-X-ray fluorescence) to analyze crack propagation as well as glass bridge formation and composition in aluminosilicate-based refractory castables. Andalusite-based refractories are compared with chamotte 45 and chamotte 60, before and after a thermal shock, as well as after an additional firing. Factors influencing the thermal shock resistance of aluminosilicate refractory castables include (1) crack shape, size, occurrence, and propagation (2) glass bridge formation, size, occurrence, and composition, and (3) aggregate-matrix interactions.

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基于安达卢西亚石的耐火材料的热冲击行为：裂纹桥接和晶粒-基质相互作用的微观结构研究

安达卢西亚石基耐火材料具有优异的抗热震性。尽管对替代原材料的需求不断增加，但事实证明，用替代材料来复制安达卢西亚石的抗热震性能十分困难。安达卢瑟石耐火材料的物理机械性能已得到充分研究。然而，要充分了解影响抗热震性的因素，还需要进行全面的化学和微观结构分析。本研究强调使用互补的微观结构技术（三维数字显微镜、扫描电子显微镜-能量色散 X 射线光谱和微 X 射线荧光）来分析铝硅酸盐基耐火浇注料中的裂纹扩展、玻璃桥形成和成分。在热冲击前后以及额外焙烧后，将安达卢硅酸盐基耐火材料与 Chamotte 45 和 Chamotte 60 进行了比较。影响铝硅酸盐耐火浇注料抗热震性的因素包括：(1) 裂纹的形状、大小、出现和扩展；(2) 玻璃桥的形成、大小、出现和组成；以及 (3) 骨料与基质之间的相互作用。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.