High-temperature strength behavior of tantalum diboride to 2000°C |
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| Authors: | Oleg Vasylkiv Dmytro Demirskyi |
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| Affiliation: | 1. Research Center for Electronic & Optical Materials, National Institute for Materials Science, Tsukuba, Japan;2. WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, Japan |
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| Abstract: | This study investigated the high-temperature strength of spark plasma sintered tantalum diboride (TaB2) for the first time. TaB2 exhibited a unique elastic fracture behavior below 1900°C, unlike other transition metal diborides. The consolidation process involved spark plasma sintering at 2000–2200°C yielding dense TaB2 samples. The flexural strength was measured at elevated temperatures up to 2000°C, showing a quite high flexural strength of 400 ± 20 MPa at 1900°C. These findings provide valuable insights into the high-temperature behavior of TaB2, highlighting its potential for advanced applications. |
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| Keywords: | spark plasma sintering strength ultrahigh-temperature ceramics |
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