Effect of h-BN rods on high-temperature properties of alumina-carbon refractory  

作　　者：Ya-ge Li Shuai-bing Wu Feng Liang Zhong Huang Tu Long Long Dong Jun-yi Lv Hong-juan Duan Biao Wen Yong Liu Hai-jun Zhang 

机构地区：[1]The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan,430081,Hubei,China [2]Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang,471039,Henan,China

出　　处：《Journal of Iron and Steel Research International》2025年第1期115-128,共14页钢铁研究学报(英文版)

基　　金：support from the National Natural Science Foundation of China(Grant Nos.52072274,52272021,U23A20559 and 52232002);the Open Foundation of State Key Laboratory of Advanced Refractories(No.SKLAR202207);the Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials(Wuhan University of Science and Technology,WKDM202201);the Open/Innovation Foundation of Hubei Three Gorges Laboratory(SK232006).

摘　　要：h-BN rods modified low-carbon alumina-carbon(Al_(2)O_(3)-C)refractories were prepared,and the effect of h-BN rod addition on the high-temperature properties was investigated and compared with commercial h-BN flake,carbon black,and carbon nanotubes additives.The results demonstrated that Al_(2)O_(3)-C refractories containing h-BN rods exhibited optimal high-temperature service performances,including 25%higher hot modulus of rupture,21.3%higher thermal shock strength residual ratio,20.9%lower in oxidation and 44.3%less in slag corrosion,compared to the counterpart specimens without additives.Moreover,benefiting from the synergistic enhancement of the rod-like h-BN and in-situ generated SiC whiskers,the high-temperature service performances of h-BN rods containing specimens outperformed counterpart specimens containing commercial h-BN flake,carbon black,and carbon nanotubes,respectively.

关 键 词：Al_(2)O_(3)-C refractory h-BN rod MICROSTRUCTURE High-temperature service performance 

分 类 号：TQ175.1[化学工程—硅酸盐工业]