MXene（TiC）相添加对氮化硅陶瓷微观结构和力学性能的影响
Influence of MXene (TiC) Phase Addition on the Microstructure and Mechanical Properties of Silicon Nitride Ceramics.
作者信息
Wozniak Jaroslaw, Petrus Mateusz, Cygan Tomasz, Lachowski Artur, Adamczyk-Cieślak Bogusława, Moszczyńska Dorota, Jastrzębska Agnieszka, Wojciechowski Tomasz, Ziemkowska Wanda, Olszyna Andrzej
机构信息
Faculty of Material Science and Engineering, Warsaw University of Technology, Wołoska 141 Str, 02-507 Warsaw, Poland.
Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
出版信息
Materials (Basel). 2020 Nov 19;13(22):5221. doi: 10.3390/ma13225221.
This paper discusses the influence of TiC (MXene) addition on silicon nitride and its impact on the microstructure and mechanical properties of the latter. Composites were prepared through powder processing and sintered using the spark plasma sintering (SPS) technic. Relative density, hardness and fracture toughness, were analyzed. The highest fracture toughness at 5.3 MPa·m and the highest hardness at HV5 2217 were achieved for 0.7 and 2 wt.% TiC, respectively. Moreover, the formation of the SiNO phase was observed as a result of both the MXene addition and the preservation of the α-SiN→β-SiN phase transformation during the sintering process.
本文讨论了添加TiC（MXene）对氮化硅的影响及其对后者微观结构和力学性能的影响。通过粉末加工制备复合材料，并使用放电等离子烧结（SPS）技术进行烧结。分析了相对密度、硬度和断裂韧性。对于0.7 wt.%和2 wt.%的TiC，分别实现了5.3 MPa·m的最高断裂韧性和HV5 2217的最高硬度。此外，由于添加MXene以及在烧结过程中保留了α-SiN→β-SiN相变，观察到了SiNO相的形成。
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