Effect of stainless steel fibers on properties of MgO-C refractories  

作　　者：Jian-zhao Shang Bao-liang Liu Kai Shi Yang Liu Yong-hao Mi Wen-hao Fan Yi-xian He 

机构地区：[1]School of Material Science and Engineering,Henan University of Technology,Zhengzhou,450001,Henan,China [2]Henan Industrial School,Zhengzhou,450001,Henan,China

出　　处：《Journal of Iron and Steel Research International》2023年第11期2186-2193,共8页

基　　金：supported by the Scientific and Technological Research Project of the Henan Provincial Department of Science and Technology of China(No.212102210579).

摘　　要：MgO-C refractories with stainless steel fibers were prepared to investigate the effects of stainless steel fibers addition on the thermal shock resistance,oxidation resistance,and microstructure of MgO-C refractories,and the optimum amount of stainless steel fibers was determined.The results showed that adding stainless steel fiber in MgO-C refractories can increase flexural strength and thermal shock resistance,with an optimal addition of 2 wt.%,owing to the bridging effect and crack deflection toughening of stainless steel fibers inside the material.The formation of MgAl1.9Fe0.1O4 composite spinel,which was responsible for higher oxidation resistance,produced volume expansion and prevented the diffusion of oxygen.The strengthening mechanism is physical embedding at room temperature,while it is reaction bonding at high temperature.

关 键 词：MgO-C refractory Stainless steel fiber Thermal shock resistance Oxidation resistance MICROSTRUCTURE 

分 类 号：TG142.71[一般工业技术—材料科学与工程]