Gevorkyan Edwin, Rucki Mirosław, Panchenko Sergey, Sofronov Dmitry, Chałko Leszek, Mazur Tomasz
Department of Quality, Standardization, Certification and Manufacturing Technology, Ukraine State University of Railway Transport, 7 Feuerbach sq., 61010 Kharkiv, Ukraine.
Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, ul. Stasieckiego 54, 26-600 Radom, Poland.
Materials (Basel). 2020 Nov 17;13(22):5195. doi: 10.3390/ma13225195.
In this study, the effect of the addition of silicon carbide to alumina ceramics commonly used in cutting tool applications is addressed. Performance of AlO-SiC composite cutting inserts during the machining of hardened steels and ductile iron was compared to the results obtained for a cutting tool made out of 99 wt.% AlO, AlO-TiC, AlO-TiC-ZrO, and AlO-TiN. In almost all tests, the composite with silicon carbide demonstrated better wear resistance, longer tool lifetime, and the ability to cut at higher speeds. The enhanced properties of cutting tools with SiC can be attributed to the morphology and dimensions of the inclusions in the matrix as well as to the strength of the interphase boundaries, small porosity, and lack of high inner stresses in the volume.
在本研究中，探讨了向切削刀具应用中常用的氧化铝陶瓷添加碳化硅的效果。将AlO-SiC复合切削刀片在加工淬硬钢和球墨铸铁时的性能，与由99 wt.% AlO、AlO-TiC、AlO-TiC-ZrO和AlO-TiN制成的切削刀具所获得的结果进行了比较。在几乎所有测试中，含有碳化硅的复合材料表现出更好的耐磨性、更长的刀具寿命以及在更高速度下切削的能力。含SiC切削刀具性能的增强可归因于基体中夹杂物的形态和尺寸，以及相间边界的强度、小孔隙率和体积内缺乏高内应力。
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