Structure, Mechanical and Tribotechnical Properties of Glass-to-Metal Composites Based on Iron–Carbon Alloys
| Autor: | O. D. Kostenko, G. A. Baglyuk, G. A. Maksymova, V. Ya. Kurovskii, G. M. Molchanovska |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Metals and Alloys 02 engineering and technology Boron carbide Intergranular corrosion Condensed Matter Physics Hot pressing Microstructure 030226 pharmacology & pharmacy 03 medical and health sciences chemistry.chemical_compound 020303 mechanical engineering & transports 0302 clinical medicine 0203 mechanical engineering chemistry Mechanics of Materials Boron nitride Phase (matter) Materials Chemistry Ceramics and Composites Pearlite Composite material Powder mixture |
| Zdroj: | Powder Metallurgy and Metal Ceramics. 56:656-663 |
| ISSN: | 1573-9066 1068-1302 |
| Popis: | Principle mechanical and tribotechnical properties of glass-to-metal iron–carbon alloys with 5% glass modified with boron carbide, copper, and boron nitride additives are investigated. It is shown that the introduction of 2% boron carbide in the starting powder mixture provides a significant increase in the wear resistance and friction coefficient (0.27–0.42), compared to B4C-free materials. The use of hot pressing promotes a sharp increase in the wear resistance, compared to sintered materials, and hardly affects the friction coefficient. The microstructure of glass-to-metal sintered materials has a distinct heterophase character and consists of metal matrix phase based on at least three types of grains (boron–cementite Fe3(B0,7C0,3), lamellar and granular pearlite) and a glass phase, which is distributed in the steel matrix in the form of either thin layer at intergranular boundaries or separate inclusions of irregular shape up to 30–50 μm in size. |
| Databáze: | OpenAIRE |
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