不锈钢上液相电沉积类金刚石薄膜

Diamond-Like-Carbon Film Prepared on Stainless Steel Substrates by Liquid Phase Electrochemical Deposition

以甲醇有机溶液作碳源,应用直流脉冲电化学沉积方法,在不锈钢表面制备了类金刚石碳薄膜.用原子力显微镜、扫描电镜、拉曼光谱仪和傅立叶红外吸收光谱表征该薄膜的表面形貌和结构.结果表明:经电化学沉积的含氢类金刚石碳薄膜均匀、致密,表面粗糙度小;Raman光谱在1 332.51cm-1处有一强的谱峰,与金刚石的特征谱峰相重合.加入活性添加剂,增加了电流密度,使沉积速率提高到0.5μm/h.

Diamond-like carbon （DLC） films were deposited on stainless steel substrates at atmospheric pressure and low temperature （60℃） by electrolysis in a methanol solution with a pulseddirect current power supply. The morphology and microstructure of the resulting DLC films were analyzed using atomic force microscopy （AFM）、 scanning electron microscopy （ SEM）, Rarnan spectroscopy and Fourier transformation infrared spectrometa＇y（FTIR）. The experimental results show that the hydrogenated diamond-like carbon filmsare smooth and compact. Raman spectroscopy analysis confirmed the presence of a strongpeak at 1 332.51 cm^-1 ,which is assigned to crystalline diamond. The deposition rate can be enhanced to 0.5μm/h by adding hydrogenous organic solutions.