化学沉积钴基纳米晶合金涂层工艺

Preparation and Microstructnre of Cobalt Alloy Nanoerystalline Coatings via Chemical Deposition

化学沉积是制备纳米材料的一种良好方法,通过控制溶液组份和操作条件可以获得不同尺度的纳米晶。在化学沉积钴硼、钴磷合金纳米晶涂层制备工艺的基础上,制备了钴镍硼、钴镍磷纳米晶合金涂层,研究了三元纳米晶合金的沉积速率和显微组织结构。结果表明:当CCo2+/CNi2+=3∶2时,pH值7.2,温度80℃,负载因子0.4dm2/L,可以获得钴镍硼合金纳米晶。以纳米晶钴磷合金沉积液为基本配方,CCo2+/(CCo2++CNi2+)保持在0.1～0.5之间变化,可获得较好的纳米晶钴镍磷合金沉积层。

Chemical deposition technology is a better preparation method of nanostructure materials, by which the nanocrystalline with different scale can be produced through controlling the concentration of solution and operation parameters. Based on the technology of Co-B and Co-P alloys nanocrystalline coatings, the ternary Co-Ni-B and Co-Ni-P nanocrystalline alloy coatings were obtained, and the deposit rate and microstructure of ternary nanocrystalline alloys were investigated.The results show that, as C_(Co)~^(2+)/C_(Ni)~^(2+)=3:2, pH =7.2, the temperature is 80℃ and loading factor is 0.4 dm^2/L, the nanocrystalline Co-Ni-B alloy can be obtained with controllable crystalline size. On the basis of the formula of Co-P nanocrystalline alloy, the nanocrystalline Co-Ni-P alloy is deposited with C_(co)^(2+)/(C_(Co)^(2+)+C_(Ni)^(2+))among 0.5～1.0.