کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1579364 | 1514827 | 2010 | 5 صفحه PDF | دانلود رایگان |
Monolithic TiB2 ceramics with fine-grained microstructures and good mechanical properties were synthesized by spark plasma sintering (SPS) technique under a pressure of 50 MPa, with heating rate of 150 °C/min, and sintering temperature ranging from 1200 °C to 1800 °C. Microstructures, mechanical properties, and densification behavior of the ceramics were investigated. Results indicate that TiB2 ceramics sintered at 1800 °C provide the optimal combination of dense microstructure and excellent properties, including the relative density of 97.6%, the microhardness of 29.6 ± 2.5 GPa, the flexural strength of 538 ± 45 MPa, and the fracture toughness of 5.2 ± 0.4 MPa m1/2. The dense microstructure is the main factor to improve the mechanical properties of the TiB2 ceramics synthesized by SPS process.
Journal: Materials Science and Engineering: A - Volume 527, Issues 21–22, 20 August 2010, Pages 5947–5951