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首页> 外文期刊>Journal of Ceramic Science and Technology >Effect of Alumina-Coated Graphite (ACG) on the Microstructure and Mechanical Properties of Al2O3-C Refractories
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Effect of Alumina-Coated Graphite (ACG) on the Microstructure and Mechanical Properties of Al2O3-C Refractories

机译：氧化铝涂层石墨（ACG）对Al2O3-C耐火材料的微观结构和力学性能的影响

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摘要

Alumina-coated graphite(ACG) was prepared by soaking expanded graphite (EG) in an AlCl3 solution withvacuum impregnation. The graphite was then filtered, dried and treated in a coke bed at 400 -1000 degrees C. TheACGwas incorporated into Al2O3-C refractories, partly or completely replacing EG. The results showed that the alumina coating on the graphite was effective and delayed the oxidation behavior of the expanded graphite. It also allowed the structure of the graphite to survive largely intact at high temperatures as it had been incorporated into the Al2O3-C refractories while there were fewer in situ-formed ceramic phases in the matrix, e. g. SiC whiskers. As a result, ACG-containing Al2O3-C refractories exhibited better thermal shock resistance than that of common Al2O3-C refractories.
机译：通过浸渍浸渍溶液中的膨胀石墨（例如）制备氧化铝涂层石墨（ACG）。 然后将石墨过滤，干燥并在400-1000℃的焦床中处理，并将其掺入Al 2 O 3-C耐火材料中，部分或完全替换。 结果表明，石墨上的氧化铝涂层有效，延迟了膨胀石墨的氧化行为。 它还允许石墨的结构在很大程度上在高温下完整，因为它已被掺入Al2O3-C耐火材料中，而基质中的原位形成的陶瓷相较少，例如，e。 G。 SIC晶须。 结果，含ACG的Al 2 O 3-C耐火材料表现出比普通Al2O3-C耐火材料的热抗冲击性更好。

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