Shim Jee Soo, Beom Hyeon Gyu
Department of Mechanical Engineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.
Nanomaterials (Basel). 2023 Jan 31;13(3):575. doi: 10.3390/nano13030575.
Recently, many researchers in the semiconductor industry have attempted to fabricate copper with carbon nanotubes for developing efficient semiconductor systems. In this work, tensile tests of a carbon-nanotube-reinforced copper specimen were conducted using the molecular statics method. The copper substrate utilized in the tensile tests had an edge half-crack, with the carbon nanotube located on the opposite side of the copper substrate. Subsequently, the effects of carbon nanotube radius were investigated. The mechanical properties of the copper/carbon nanotube composite were measured based on the simulation results, which indicated that the atomic behavior of the composite system exhibited the blocking phenomenon of crack propagation under tension. The fracture toughness of the composite system was measured using the Griffith criterion and two-specimen method, while the crack growth resistance curve of the system was obtained by varying the crack length. This study demonstrated that the mechanical reliability of copper can be improved by fabricating it with carbon nanotubes.
最近，半导体行业的许多研究人员试图用碳纳米管制造铜，以开发高效的半导体系统。在这项工作中，使用分子静力学方法对碳纳米管增强铜试样进行了拉伸试验。拉伸试验中使用的铜基体有一个边缘半裂纹，碳纳米管位于铜基体的另一侧。随后，研究了碳纳米管半径的影响。基于模拟结果测量了铜/碳纳米管复合材料的力学性能，结果表明复合系统的原子行为在拉伸时表现出裂纹扩展的阻碍现象。使用格里菲斯准则和双试样法测量了复合系统的断裂韧性，同时通过改变裂纹长度获得了系统的裂纹扩展阻力曲线。这项研究表明，用碳纳米管制造铜可以提高其机械可靠性。
