耐火浇注料增强用莫来石宏针

Q3 Materials Science

Cerâmica Pub Date : 2022-12-01 DOI:10.1590/0366-69132022683883342

A. Mocciaro, A. Cimas, N. Rendtorff, A. Scian

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引用次数: 1

摘要

研究了在商品耐火浇注料中掺入陶瓷宏针作为增强材料的方法。以高岭石粘土和三水铝石为原料，制备了以莫来石为主晶相的陶瓷大针（Å2x20mm）。在两个温度（815和1400°C）下处理后，通过压缩对具有陶瓷增强件的试样进行评估。将结果与使用相同的商品混凝土但用钢纤维加固和不使用加固获得的结果进行比较。在暴露于815°C和1400°C后，陶瓷宏观针试样的压缩值分别比钢纤维试样高74%和50%。基于这些结果，确定了陶瓷宏针是提高浇注料在高温下的机械阻力的可行解决方案。

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Mullite macro-needles for reinforcement of refractory castables

Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. Ceramic macro-needles (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite as the main crystalline phase. Specimens with the ceramic reinforcement were evaluated by compression after being treated at two temperatures (815 and 1400 °C). The results were compared with those obtained using the same commercial concrete but reinforced with steel fibers and without reinforcement. Compression values presented by specimens with ceramic macro-needles were 74% and 50% higher than specimens with steel fibers after exposition to 815 and 1400 °C, respectively. Based on these results, it was established that ceramic macro-needles are a feasible solution to improve the mechanical resistance of castables exposed to high temperatures.

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来源期刊

Cerâmica Materials Science-Ceramics and Composites

CiteScore

1.90

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： A Revista Cerâmica, órgão oficial da Associação Brasileira de Cerâmica (ABCERAM) publica contribuições originais de interesse na área de cerâmica, compreendendo arte cerâmica, abrasivos, biocerâmicas, cerâmicas avançadas, cerâmica branca, cerâmica de mesa, cerâmica eletroeletrônica, cerâmica estrutural, cerâmica magnética, cerâmica nuclear, cerâmica óptica, cerâmica química, cerâmica termomecânica, cerâmica vermelha, cimento, compósitos de matriz cerâmica, materiais refratários, materiais de revestimento, matérias-primas, vidrados, vidros e vitrocerâmicas, análise microestrutural, ciência básica, instrumentação, processos de fabricação, síntese de pós, técnicas de caracterização etc.