镍磷-纳米碳管复合镀层的力学性能

Mechanical properties of Ni-P-carbon nanotube composite electroless plating

采用化学复合镀的方法,在铜箔基体上进行Ni-P-纳米碳管复合镀。用金相显微镜、扫描电子显微镜、显微硬度计、万能拉伸试验机等实验手段研究复合镀试样的组织和性能。结果表明:随着镀液中纳米碳管含量的增加,复合镀层表面的粒度变小,硬度增加;最大延伸率、断面收缩率和拉伸断口侧面的裂纹密度增加,但抗拉强度、断裂强度和弹性模量降低。

The Ni P-carbon nanotubes （Ni-P-CNTs） composite electroless deposit on the basis of copper foil was prepared by means of composite electroless plating. The optical microscope, scanning electronic microscope （SEM）, microhardness tester and omnipotence tensile testing machine were used to study the Ni-P-CNTs composite electroless plating samples＇ microstructure and properties. The results show that the grain size on the sample surface de creases and the hardness for composite plating increases with the increment of CNTs content in the electroless plating solution. In addition, the maximum extensibility, the reduction of area and the crack density of the fracture side of Ni-P-CNTs composite electroless plating samples increase with the increment of CNTs content, while the tensile strength, the fracture strength and Young＇s modulus decrease.