Al添加MgO-C煉瓦の特性に及ぼす熱処理条件の影響

概要

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The properties of MgO C bricks containing O to 5%. aluminum powder were investigated after heat treat ment at 1400℃ under different heating conditions. When Al_4C_3, the reaction product of Al and C, reacts with CO and MgO to form MgAl_2O_4 and C, a weight in crease of MgO-C brick containing Al should be ob tained. However, the weight increase decreased with increasing heating rate and Al content. It was consi dered that Mg (g) diffused to the surface of brick and reacted with CO to form MgO, from the fact that the carbon powder contained MgO after heat treatment. Mg (g) was generated by the reaction of MgO and AI or C in the brick. The decrease in weight increase was con trolled by slow heating. The mechanical properties were almost the same regardless of the difference of weight increase between fast and slow heatings.
社団法人日本セラミックス協会の論文
1994-05-01