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Magnetic performance and corrosion resistance of electroless plating CoWP film

查看全文 作　　者：Jiang, [1]Li; Pan, [1]Shanshan; Lu, [1]Jianbiao; Ke, [2]Xin; He, [2]Wenhao; Yu, [1]Yundan; Wei, [1]Guoying; Ge, [1]Hongliang 高影响力作者 机构地区：[1] College of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, China; [2] Zhejiang Keda Magnetoelectricity Limited Company, Huzhou, 313200, China高影响力机构 出　　处：《Rare Metals》索引2012年第31卷第3期,共8页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China (Nos. 20971116 and 21171155);International Scientific and Technological Cooperation Project (No. 2011DFA52400);Education Commission of Zhejiang Province of China (No. Y201122332);Zhejiang Provincial Natural Science Foundation of China (No.Q12E010017) 摘　　要：The CoWP film with good magnetic performance and corrosion resistance was electrolessly plated from alkaline solution. The technical parameters of the electroless plating system were optimized. When the pH value of electroless plating solution was 11.0 and the reducing agent (NaH2PO2) content was 0.4 mol L 1, the target chemical reactions proceeded in the electroless plating solution smoothly with negligible interference and side effects. CoWP film prepared under optimal deposition condition contained more hexagonal close-packed (hcp) cobalt (ε-Co) of [110] and crystallographic orientation of Co [002]. VSM analysis reveals that the saturation magnetization of the CoWP film is 100~220 Am2 kg 1 and coercivity is (2.87~4.38)×104 A·cm 1. The corrosion behavior of CoWP film in 3.5% NaCl aqueous solution was studied by electrochemical experiments. The results prove that the corrosion resistance of the CoWP film deposited under the optimal depo-sition condition exhibites relatively lower corrosion current of (3.054~3.162)×10 6 A·cm 2. The surface morphology analysis indicates that the film is smooth and composed of regular-shaped crystallites. 关 键 词：CoWP 电影 腐蚀 磁性 微观结构
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