作者：WANG Li,LIU Shijie,WEI Haoyu,MA Juanjuan,DONG Binbin,GENG Shangrui,YAN Miaoxin,QIN Feng,GUO Yusen

作者单位：Luoyang Institute of Science and Technology

刊名：China's Refractories

ISSN：1004-4493

出版年：2024-12-15

卷：33

期：4

起页：9-13

止页：

分类号：TQ175.7

语种：英文

关键词：

内容简介

Al4SiC4 was prepared using Al powder, silicon carbide powder, and graphite as raw materials, and silicon as the additive by microwave sintering. Effects of silicon additions（0, 5%, 10% and 15%, by mass） on the phase composition, microstructure,apparent porosity and bulk density of the Al4SiC4 sample prepared with different aluminum additions（20%, 25%, by mass）were researched. Then the developed Al4SiC4 samples were applied to MgO-C bricks to investigate the effect on the oxidation resistance and mechanical properties of the MgO-C bricks. The results show that Al4SiC4 can be synthesized at lower temperatures using the microwave sintering method. The sample with 20% aluminum addition has a lower Al4SiC4 content than the one with 25% aluminum. When the silicon addition is 10% and the aluminum addition is 25%, the sample appears needlelike system, the porosity is only 28.69%, and the sample is dense. The developed Al4SiC4 was added into MgO-C bricks as the antioxidant, which greatly increased the oxidation resistance and the mechanical properties of the MgO-C bricks.