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電刷鍍納米晶鎳鐵合金鍍層腐蝕特性的研究
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福建省科技計(jì)劃重點(diǎn)項(xiàng)目(2006H0020)；福建省自然科學(xué)基金項(xiàng)目（E0410011）


Corrosion Characteristic of Nanocrystalline Ni-Fe Alloy Coating Synthesized by Brush Plating
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    采用可溶性陽極電刷鍍的方法制備納米晶Ni-Fe合金和納米晶Ni鍍層，用浸泡法和電化學(xué)極化法研究了納米晶Ni、Ni-5.84%Fe和Ni-13.49%Fe鍍層在3.5% NaCl和10% HCl溶液中的腐蝕行為。結(jié)果表明：通過此法制備的Ni和Ni-Fe合金鍍層具有典型的納米晶結(jié)構(gòu)；隨著含F(xiàn)e量的增加，鍍層的晶粒尺寸減小，硬度增加；所制備的納米晶Ni-13.49%Fe合金鍍層組織結(jié)構(gòu)均勻致密，晶界處沒有明顯的孔洞或缺陷，晶界及三叉晶界處的原子錯(cuò)配度小，過渡均勻，其在3.5% NaCl溶液中的耐蝕性優(yōu)于納米晶Ni鍍層，而在10% HCl溶液中的耐蝕性與納米晶Ni鍍層相當(dāng)；納米晶Ni和納米晶Ni-Fe合金刷鍍層在3.5% NaCl溶液中的腐蝕形態(tài)均為點(diǎn)蝕，而在10% HCl溶液中的腐蝕形態(tài)則為均勻腐蝕。

    Abstract:

    Nanocrystalline nickel and Ni-Fe alloy coatings were synthesized by brush plating using soluble anode. The corrosion characteristics of nanocrystalline nickel, Ni-5.84%Fe and Ni-13.49%Fe alloys were investigated by soak a method and an electrochemical polarization method, respectively. The experimental results indicate that the typical nanocrystalline nickel and Ni-Fe alloy coatings can be synthesized by brush plating, and the alloying element Fe has the effects of solution strengthening and grain size refinement. The nanocrystalline Ni-13.49%Fe alloy is dense in nature and pore free, and exhibits better corrosion resistance in a 3.5 wt% NaCl solution than the nanocrystalline nickel. In 10 wt% HCl solution, the nanocrystalline Ni-13.49%Fe alloy also shows a good corrosion resistance as the nanocrystalline nickel. The surface morphology of all samples after corrosion show a spot corrosion feature in 3.5 wt% NaCl solution, however, the samples are uniformly corroded in 10 wt% HCl solution.

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項(xiàng)忠楠,戴品強(qiáng),陳閃閃,林志福,葛 敏.電刷鍍納米晶鎳鐵合金鍍層腐蝕特性的研究[J].稀有金屬材料與工程,2009,38(1):151~156.[Xiang Zhongnan, Dai Pinqiang, Chen Shanshan, Lin Zhifu, Ge Min. Corrosion Characteristic of Nanocrystalline Ni-Fe Alloy Coating Synthesized by Brush Plating[J]. Rare Metal Materials and Engineering,2009,38(1):151~156.]
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  • 收稿日期:2008-01-10
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