Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea.
Division of Advanced Materials Engineering and the Research Center of Hydrogen Fuel Cell, Engineering College, Chonbuk National University, 561-756, Republic of Korea.
J Nanosci Nanotechnol. 2019 Apr 1;19(4):2354-2357. doi: 10.1166/jnn.2019.15980.
The significance of Al matrix composites reinforced with metal carbide having low density and very high hardness increases in order to reduce CO₂ emissions and improve the efficiency of energy in automobile and transportation industries. Nanopowder mixture of Ta and Al₄C₃ were fabricated by high energy ball milling. Highly dense nanostructured 4Al-3TaC composite was consolidated by high-frequency induction heated sintering within one min from the mechanically activated nanopowder mixture of Ta and Al₄C₃ under the 80 MPa pressure. The microstructure, sintering behavior and mechanical properties (hardness and fracture toughness) were evaluated using FE-SEM and Vickers hardness tester.
为了减少二氧化碳排放并提高汽车和运输行业的能源效率，具有低密度和超高硬度的碳化硅增强铝基复合材料的意义日益增加。通过高能球磨制备了 Ta 和 Al₄C₃的纳米粉末混合物。通过高频感应加热在 80 MPa 压力下从机械激活的 Ta 和 Al₄C₃纳米粉末混合物在 1 分钟内固结了高密度纳米结构 4Al-3TaC 复合材料。使用 FE-SEM 和维氏硬度计评估了微观结构，烧结行为和机械性能（硬度和断裂韧性）。
