Spark plasma sintering of ZrB2 powders synthesized by citrate gel method |
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| Affiliation: | 1. Department of Material Science and Engineering, Dumlupınar University, Kutahya, Turkey;2. Department of High-temperature Materials and Powder Metallurgy, National Technical University of Ukraine, Igor Sikorsky Kyiv Polytechnic Institute, Kyiv, Ukraine;1. Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea;2. Department of Metallurgical and Materials Engineering, Colorado School of Mines, Golden 80401, USA;3. Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea;1. Islamic Azad University, Saveh Branch, Saveh, Iran;2. Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran;3. Materials and Energy Research Center, Karaj, Iran;4. Department of Mechanical Engineering, University of Mohaghegh Ardabili, Ardabil, Iran;1. Key Laboratory of High-Efficiency and Clean Mechanical Manufacture, Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, China;2. Research Centre for Stone Engineering(Shandong Province), Jinan 250061, China;1. College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, PR China;2. Max-Planck Institut für Eisenforschung GmbH, Max-Planck-Str. 1, 40237 Düsseldorf, Germany |
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| Abstract: | The densification behavior of nanocrystalline zirconium diboride (ZrB2) powders with nickel (5 vol%) is reported by spark plasma sintering (SPS) technique. SPS experiments were performed at 1600 and 1900 °C with 65 MPa pressure and 1 min holding time. A maximum relative density around 95% was obtained after SPS processing of ZrB2 at 1900 °C while the density of ZrB2 sample sintered at 1600 °C reached 88% of the theoretical density. Hardness and fracture toughness values are 11 GPa and 4.11 MPa m1/2 for the sample sintered at 1600 °C and 13.7 GPa and 2.65 MPa m1/2 for the sample sintered at 1900 °C, respectively. |
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