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利用复合电沉积的方法在钛合金基体上成功制备出具有优异光学性能的碳纳米管/黑镍复合涂层,并研究了复合涂层的微观形貌、光学性能以及镀液中碳纳米管浓度和电镀电流密度对光学性能的影响。实验结果表明:相较于传统电镀方法获得的单一黑镍涂层,复合涂层的晶粒尺寸明显减小,形成多孔结构,表面粗糙程度明显增加。复合涂层对300~2300 nm范围内的入射光吸收率达到98%左右,在2.5~20?m范围内的红外吸收率达到94%,远远高于传统单一黑镍涂层。复合涂层的太阳吸收比会随着镀液中碳纳米管浓度与电镀电流密度的增加呈先增大后减小的变化规律。
The composite electrodeposited carbon nanotubes / black nickel composite coatings with excellent optical properties were successfully prepared on the titanium alloy substrate. The morphology and optical properties of the composite coatings and the concentration of carbon nanotubes And the influence of plating current density on optical properties. The experimental results show that, compared with the single black nickel coating obtained by the conventional electroplating method, the grain size of the composite coating is obviously reduced, the porous structure is formed, and the surface roughness is obviously increased. The composite coating absorbs about 98% of the incident light in the range of 300 ~ 2300 nm and has an infrared absorption of 94% in the range of 2.5 ~ 20 μm, which is much higher than that of the conventional single black nickel coating. The solar absorption ratio of the composite coating first increases and then decreases with the increase of the concentration of the carbon nanotubes and the plating current density in the plating solution.