Nanoscale toughening of low carbon Al2O3‐C refractories by means of SiCnw/Al2O3 composite reinforcement

• DOI: 10.1111/jace.19232
• Publication Date: 2023-06-09T21:17:42Z
• Authors: Xiaochuan Chong; Jiyuan Luo; Donghai Ding; Shengli Jin; Guoqing Xiao
• Keywords: Thermal shock; Carbon fibers; Toughening

Abstract To improve the thermal shock resistance of low carbon Al 2 O 3 ‐C refractories, SiC nanowires (SiC nw ) containing /Al composite reinforcement were introduced. The specific fracture energy refractory matrix was obtained by statistical grid nano‐indentation. mechanism on refractories investigated. results revealed that matrix‐specific A6 (6 wt% added) 217 N/m, which 58.4% higher than reference sample A0 (137 N/m) and 18.6% MA6 (183 6 SiC/Al added). showed highest residual strength ratio 49.8%, 114.7 % (23.2%) 82.4 (27.3%). components with different morphology in cluster, especially nanowires, promote generation microcracks, crack multi‐deflection, branching, toughen refractories. In comparison to literature, a rising those graphite content (4 20 wt%), will greatly reduce consumption carbon‐containing contribute reduction CO emission.