Kozień Dawid, Czekaj Izabella, Gancarz Patrycja, Ziąbka Magdalena, Wieczorek Wojciech, Pasiut Katarzyna, Zientara Dariusz, Pędzich Zbigniew
Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicz Av., 30-059 Kraków, Poland.
Materials (Basel). 2022 Dec 5;15(23):8657. doi: 10.3390/ma15238657.
In this study, we investigated the effect of adding two different intermetallics, TiSi and TiSi, for the preparation of TiB-SiC-BC composites. As part of the research, stoichiometric composites consisting only of two phases TiB and SiC were obtained. The TiB-SiC-BC composites were prepared via pressureless sintering. The presence of the phases in the sintered composites was confirmed using X-ray diffraction and scanning electron microscopy. The SEM-EDS examination revealed that the TiB and SiC phases were formed during the composite process synthesis and were distributed homogeneously in the BC matrix. The obtained results allowed us to usually exceed 2000 °C and the use of specialized equipment for firing, that is, vacuum or protective atmosphere furnaces as well as control and measurement equipment. Such an approach generates high costs that are decisive for the economics of the technological processes. In the case of our compositions, it is possible to lower the temperature to 1650 °C. The TiB-SiC-BC composites were classified as UHTCs.
在本研究中，我们研究了添加两种不同金属间化合物TiSi和TiSi对制备TiB-SiC-BC复合材料的影响。作为研究的一部分，获得了仅由TiB和SiC两相组成的化学计量复合材料。TiB-SiC-BC复合材料通过无压烧结制备。使用X射线衍射和扫描电子显微镜确认了烧结复合材料中各相的存在。扫描电子显微镜-能谱分析表明，TiB和SiC相在复合材料合成过程中形成，并均匀分布在BC基体中。所获得的结果使我们通常能够超过2000°C，并使用专门的烧制设备，即真空或保护气氛炉以及控制和测量设备。这种方法会产生高昂的成本，这对工艺流程的经济性起着决定性作用。就我们的成分而言，可以将温度降低到1650°C。TiB-SiC-BC复合材料被归类为超高温陶瓷。
