”Taikabutsu”:A technical report on ”Analysis of a dense structure of Al2O3-Al4SiC4-C” published

2018.03.28

”Taikabutsu”:A technical report on ”Analysis of a dense structure of Al<sub>2</sub>O<sub>3</sub>-Al<sub>4</sub>SiC<sub>4</sub>-C” published

Summary

The Okayama Ceramics Research Foundation (OCRF) published a technical report(1) on ”Analysis of a dense structure of Al2O3-Al4SiC4-C” in the “Taikabutsu” issued by the Technical Association of Refractories.
Since the Aluminium Silicon Carbide (Al2O3-Al4SiC4-C) has an interesting feature, it has been drawing attention in the fields of high temperature materials and refractory raw materials as a new functional materials and it is expected to become developed for applications to various materials and applications.
Al2O3-Al4SiC4-C has such a high melting point (2037°C) and an excellent hydration resistance that it is said to be a promising refractory raw material.

複合炭化物Al<sub>2</sub>O<sub>3</sub>-Al<sub>4</sub>SiC<sub>4</sub>-Cは興味深い特徴をもつことから、新たな機能性材料として高温材料、耐火物原料等の分野において注目されており、各種の材料・用途への応用展開が期待されています。

In this study, they prepared an Al2O3-Al4SiC4-C sample material, which matrix is mostly consisted of Al4SiC4 powder and scaly graphite.
They burned it under the use conditions assumed in actual operation of the commercial furnace.
They analyzed that dense sintered sample by a spectroscopic analysis and an electron microscopy then discussed about its dense structure.

At high temperature in the furnace, the densified Al2O3-Al4SiC4-C material gets further densified by its internal reaction.
They revealed that the novel microstructures are formed in the material at this time.
In addition, the generation of the involved mesophase can be understood consistently with the thermodynamic consideration.
Though a mass production of Al4SiC4 had not been achieved before, OCRF and Tateho Chemical Industries established the mass production process as a result of our collaborative research.
In December 2017, TATEHO launched "REFTAT® AC-1" onto the market.

(1) Yasuhiro Hoshiyama, Shigeyuki Takanaga:Taikabutsu, 70 [1] 10-17 (2018).

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炭化アルミニウムケイ素(Al<sub>4</sub>SiC<sub>4</sub>) REFTAT®

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Tateho’s REFTAT® AC-1 (Aluminium silicon carbide, (Al4SiC4) has a high melting point of 2037 °C. This is a material stable in a wide range of temperatures and has excellent water resistance.

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