Preparation and Performance Analysis of Nb Matrix Composites Reinforced by Reactants of Nb and SiC
Zhen Lu,
Chaoqi Lan,
Shaosong Jiang,
Zhenhan Huang,
Kaifeng Zhang
Affiliations
Zhen Lu
National Key Laboratory for Precision Heat Processing of Metals, Key laboratory of Micro-Systems and Micro-Structures Manufacturing Ministry of Education, Department of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Chaoqi Lan
National Key Laboratory for Precision Heat Processing of Metals, Key laboratory of Micro-Systems and Micro-Structures Manufacturing Ministry of Education, Department of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Shaosong Jiang
National Key Laboratory for Precision Heat Processing of Metals, Key laboratory of Micro-Systems and Micro-Structures Manufacturing Ministry of Education, Department of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Zhenhan Huang
National Key Laboratory for Precision Heat Processing of Metals, Key laboratory of Micro-Systems and Micro-Structures Manufacturing Ministry of Education, Department of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Kaifeng Zhang
National Key Laboratory for Precision Heat Processing of Metals, Key laboratory of Micro-Systems and Micro-Structures Manufacturing Ministry of Education, Department of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
In this paper, one kind of new composite material formed with Nb and SiC was prepared by hot pressing sintering. The influence of the addition of SiC particles on the mechanical properties at room and high temperature was analyzed. The composite material consists of three phases: Nb2C, Nb3Si, and Nb solid solution (Nbss). The fraction of SiC particles added in the Nb matrix was 3%, 5%, and 7%, respectively. Flexural strength, Vickers hardness, and compressive strength at room temperature were improved with the increasing of SiC content. Among them, compressive strength and fracture toughness were higher than those of Nb/Nb5Si3 composites. The compressive strength at high temperature of the new composites was higher than that of Nb-Si alloys, which improved with the increasing of SiC content.
