Microwave-assisted synthesis of vanadium and chromium carbides nanocomposite and its effect on properties of WC-8Co cemented carbides. (15th July 2016)

• Record Type: Journal Article
• Authors: Zhao, Zhiwei
• Is Part Of: Scripta materialia. Volume 120(2016)
• Page Start: 103
• Page End: 106
• Publication Date: 2016-07-15
• Subjects: Cemented carbides -- Grain growth inhibitor -- Microwave sintering -- Microstructure -- Properties; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.04.024
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A new method of in-situ microwave heating is used to prepare vanadium and chromium carbides (V8 C7 -Cr3 C2 ) nanocomposite and their alloys. The as-prepared nanocomposite was used as the grain growth inhibitor of cemented tungsten carbides. Well dispersed V8 C7 -Cr3 C2 nanocomposite with a mean diameter of about 30 nm can be synthesized at lower temperature. The prepared nanocomposite has an important effect on the microstructure and properties of WC-8Co alloys. The microstructure of WC-8Co-0.8(V8 C7 -Cr3 C2 ) alloys is more uniform than that of WC-8Co alloys. Vickers hardness and fracture toughness of the former can be increased by about 7% compared with those of the latter. Graphical abstract: