B4C-CNT Produced by Spark Plasma Sintering |
| B. Apak, F.C. Sahin
Istanbul Technical University, Metallurgical and Materials Engineering Department, 34469 Maslak, Istanbul, Turkey |
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| H.C. Starck HS Grade boron carbide (B4C) powders with multi-walled carbon nanotube (CNT) were sintered by Spark Plasma Sintering (SPS) method in a vacuum atmosphere to obtain highly dense and fine grained final ceramic products. Powder mixtures were densified by SPS at 1650 and 1725°C using 40 MPa pressure for 5 min. The effects of heating rate, spark plasma sintering temperature and CNT additive on density, hardness, fracture toughness and microstructures of B4C-CNT samples are investigated. Density measurements were carried out using Archimedes method. Hardness and fracture toughness were examined by Vickers indentation technique. Scanning Electron Microscope (SEM) was used to observe microstructural investigation. |
DOI: 10.12693/APhysPolA.127.1029 PACS numbers: 81.20.Ev, 81.05.Je, 81.05.U-, 88.30.rh |