化学镀镍-高磷合金的微观结构及晶化行为研究  

Studies on Microstructure and Crystallization Behavior of Electroless Nickel-High Phosphorus Coatings

作　　者：蒋太祥[1] 吴辉煌[1] 

机构地区：[1]厦门大学化学系

出　　处：《高等学校化学学报》2001年第6期976-979,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金! (批准号 :2 0 0 73 0 3 5 )资助

摘　　要：采用混合络合剂在酸性体系中进行化学镀镍 -高磷合金 ,并用原子力显微镜 ( AFM)、透射电镜( TEM)、差热分析 ( DSC)、X射线衍射 ( XRD)等技术研究所得到的化学镀镍 -高磷合金的微观结构和晶化行为 .结果表明 ,化学镀镍 -高磷合金具有胞状结构的微观形貌 ,镀态时呈典型的非晶态结构 ,3 0 0℃以下对热非常稳定 .镀层在 3 4 3 .8℃开始晶化 ,4 0 0℃时完全转化成亚稳相 Ni5P2 ,4 40 .4℃时进一步转变成稳定的Ni和 Ni3 P相 .其晶化行为同从碱性乙二胺镀液中得到的高磷化学镀镍层有明显的差异 .The electroless nickel high phosphorus coatings with 12.8% P(mass fraction) have been deposited from acidic bath containing mixed complexing agents. The microstrucrure and crystallization behavior of the deposits have been characterized by AFM, TEM, DSC and XRD. The results show that the as plated deposits exhibit a rounded mound topography and have an amorphous structure. The deposits crystallize into metastable phase Ni 5P 2 at 343.8 ℃, which are subsequently transformed into stable phases of nickel and Ni 3P crystallites at 440.4 ℃. This behavior is apparently different from that of the deposits produced from alkaline ethanolamine baths.

关 键 词：化学镀镍 高磷合金 微观结构 晶化行为 镀层 

分 类 号：TQ153.12[化学工程—电化学工业]