Affiliation:
1. College of Mining Engineering College of Materials Science and Engineering Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials North China University of Science and Technology Tangshan China
2. Tangshan Guoliang Special Refractory Limited Company, Postdoctoral Workstation Tangshan China
Abstract
AbstractHerein, MgO–C refractories were prepared using fused magnesite, aluminum powder, and silicon powder as antioxidants and different kinds of graphite as carbon sources at 1200°C–1600°C. The microstructure and mechanical strength of MgO–C refractories were studied. The results showed that using cobalt‐loaded expanded graphite as partial carbon source, carbon nanotubes (CNTs) were formed in situ in MgO–C refractories at 1200°C, and the CNTs gradually reacted with Si to form SiC fibers over 1400°C. Consequently, the mechanical strength of MgO–C refractories was significantly improved.
Subject
Materials Chemistry,Marketing,Condensed Matter Physics,Ceramics and Composites