【摘要】 用C₂H₂与O2火焰在高钴YG系硬质合金基体上沉积复合的碳材料,并分别对酸蚀脱钴预处理的YG8,YG16硬质合金基体表面进行火焰法沉积研究;用扫描电镜SEM、XRD射线衍射谱、Raman光谱、原子力显微镜等手段分析了复合碳涂层的组织结构、涂层的质量以及涂层横截面.结果表明:不同时间脱钴处理后的YG8硬质合金表面经火焰沉积后,在表面分别形成了典型的"菜花状"球形金刚石、碳纳米管以及金刚石、石墨和非晶碳复合而成的碳涂层;经20 min脱钴处理的YG16硬质合金表面沉积的碳涂层则以碳纳米管为主.更多还原

【Abstract】 C₂H₂ and O₂ of flame was used to deposit carbon coatings on high Co YG series cemented carbide surface,the influence of acid corroded Co YG8,YG16 and deposition time have been investigated With the method of XRD,SEM,Raman and atomic microscope,carbon coatings structure,quality and Cross sectional microstructures of carbon coating was analyzed.The experimental result show that after different acid corroded Co time,the typical diamond/nanometer carbon tube and diamond-graphite-no crystal carbon coatings have been formed on the cemented carbide YG8 surface;after acid corroded Co 20 time,nanometer carbon tube has been mainly formed on the cemented carbide YG16 surface更多还原