| Ni-P化学镀层对NdFeB永磁材料耐腐蚀性的改善 |
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| 引用本文： | 冒爱琴,沙菲. Ni-P化学镀层对NdFeB永磁材料耐腐蚀性的改善[J]. 腐蚀与防护, 2009, 30(12) |
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| 作者姓名： | 冒爱琴 沙菲 |
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| 作者单位： | 安徽工业大学材料科学与工程学院,安徽省金属材料与加工重点实验室,马鞍山,243002;上海市纳米技术孵化基地,上海,200237 |
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| 基金项目： | 安徽省教育厅自然科学基金(kJ2009B050) |
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| 摘 要： | 测量了不同类型Ni-P化学镀试样和基体的孔隙率,以及在HCl、NaCl和NaOH溶液中的腐蚀速率,比较了不同类型Ni-P化学镀试样在3.5%NaCl溶液中的极化曲线,对比分析了酸性和酸碱复合条件下所得Ni-P镀层的表面形貌。结果表明:化学镀Ni-P合金能显著改善NdFeB永磁体的耐腐蚀性和致密性,且以弱碱性化学镀为底层,酸性化学镀为表层的酸碱复合镀层的致密性和耐腐蚀性最佳,单一酸性镀层的耐腐蚀性又优于碱性镀层。
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| 关 键 词： | Ni-P镀层 稀土 NdFeB永磁体 耐腐蚀性 孔隙率 |
Effect of Electroless Ni-P Plating on Corrosion Resistance of NdFeB Magnets |
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| MAO Ai-qin,SHA Fei. Effect of Electroless Ni-P Plating on Corrosion Resistance of NdFeB Magnets[J]. Corrosion & Protection, 2009, 30(12) |
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| Authors: | MAO Ai-qin SHA Fei |
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| Affiliation: | MAO Ai-qin1,SHA Fei2(1.Anhui University of Technology,Maanshan 243002,China,2.Shanghai Nanometer Material Incubator,Shanghai 200237,China) |
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| Abstract: | The porosity of different types of Ni-P deposits and substrate were measured and the corrosion rates were studied in 3.5% NaCl,10% HCl and 20% NaOH solutions.The corrosion characteristics of different types of Ni-P deposites in 3.5% NaCl solution were envaluated by electrochemical potentiodynamic polarization curves.The microstructure of electroless Ni-P deposits in acidic and acidic-alkaline compositing baths were compared.The results showed that all the types of deposits could enhance the densification an... |
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| Keywords: | Ni-P plating rare earth NdFeB permanent magnet corrosion resistance porosity |
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