Zhang Wei, Zhang Mingyang, Peng Yingbo, Liu Fangzhou, Liu Yong, Hu Songhao, Hu Yang
Powder Metallurgy Research Institute, Central South University, Changsha 410083, China.
College of Engineering, Nanjing Agricultural University, Nanjing 210031, China.
Entropy (Basel). 2019 Feb 10;21(2):164. doi: 10.3390/e21020164.
In this study, an effective way of applying Ti/Ni deposited coating to the surface of diamond single crystal particles by magnetron sputtering was proposed and novel high-entropy alloy (HEA)/diamond composites were prepared by spark plasma sintering (SPS). The results show that the interfacial bonding state of the coated diamond composite is obviously better than that of the uncoated diamond composite. Corresponding mechanical properties such as hardness, density, transverse fracture strength and friction properties of the coated diamond composite were also found to be better than those of the uncoated diamond composite. The effects of interface structure and defects on the mechanical properties of HEA/diamond composites were investigated. The research directions for further improving the structure and properties of high-entropy alloy/diamond composites were proposed.
本研究提出了一种通过磁控溅射将Ti/Ni沉积涂层应用于金刚石单晶颗粒表面的有效方法，并通过放电等离子烧结（SPS）制备了新型高熵合金（HEA）/金刚石复合材料。结果表明，涂层金刚石复合材料的界面结合状态明显优于未涂层金刚石复合材料。涂层金刚石复合材料的相应力学性能，如硬度、密度、横向断裂强度和摩擦性能也优于未涂层金刚石复合材料。研究了界面结构和缺陷对HEA/金刚石复合材料力学性能的影响。提出了进一步改善高熵合金/金刚石复合材料结构和性能的研究方向。
