Development and evaluation of TiB2–AlN ceramic composites sintered by spark plasma |
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Affiliation: | 1. Centre for Materials Research and Sintering Technology, Institute of Advanced Manufacturing Technology, Krakow 30-011, Poland;2. Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Krakow 30-059, Poland;3. Institute of Metallurgy and Materials Science, Polish Academy of Science, Krakow 30-059, Poland |
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Abstract: | Titanium diboride (TiB2) is a ceramic material with high mechanical resistance, chemical stability, and hardness at high temperatures. Sintering this material requires high temperatures and long sintering times. Non-conventional sintering techniques such as spark plasma sintering (SPS) can densify materials considered difficult to sinter. In this study, TiB2–AIN (aluminum nitride) composites were sintered by using the SPS technique at different sintering temperatures (1500 °C, 1600 °C, 1700 °C, 1800 °C, and 1900 °C). x-ray diffraction was used to identify the phases in the composites. mechanical properties such as hardness and indentation fracture toughness was obtained using a vickers indenter. Different toughening mechanisms were identified, and good densification results were obtained using shorter times and lower temperatures than those previously reported. |
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Keywords: | Composite Ceramics Sintering Densification |
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