| 3种主盐对AZ31镁合金Ni-P化学镀层性能的影响 |
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| 引用本文： | 袁亮,马立群,杨猛,贺忠臣,丁毅.3种主盐对AZ31镁合金Ni-P化学镀层性能的影响[J].材料保护,2010,43(2). |
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| 作者姓名： | 袁亮 马立群 杨猛 贺忠臣 丁毅 |
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| 作者单位： | 南京工业大学材料科学与工程学院,江苏,南京,210009;南京工业大学材料科学与工程学院,江苏,南京,210009;南京工业大学材料科学与工程学院,江苏,南京,210009;南京工业大学材料科学与工程学院,江苏,南京,210009;南京工业大学材料科学与工程学院,江苏,南京,210009 |
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| 摘 要： | 对镁合金进行化学镀,主盐对镀层性能有重要影响.分别以Ni(CH_3COO)_2·4H_2O,NiSO_4·6H_2O,NiCO_3·2Ni(OH)_2·4H_2O为主盐,在AZ31镁合金表面化学镀.分别采用扫描电镜(SEM)、能谱分析仪(EDS)和X射线衍射仪(XRD)分析镀层表面形貌、成分和物相结构,并用电化学工作站测量镀层在3.5%的NaCl溶液中的动电位极化曲线和电化学交流阻抗谱来评价镀层的耐蚀性.结果表明:以Ni(CH_3COO)_2·4H_2O为主盐的镀液所得镀层表面有微裂纹,而以NiSO_4·6H_2O和NiCO_3·2Ni(OH)_2·4H_2O为主盐的镀液所得镀层均匀、完整、致密;3种镀液所得镀层均属于高磷镀层;以NiSO_4·6H_2O和NiCO_3·2Ni(OH)_2·4H_2O为主盐的镀液所得镀层为非晶态,而以Ni(CH_3COO)_2·4H2O为主盐的镀液所得镀层出现少量纳米晶;以Ni(CH_3COO)_2·4H_2O为主盐的镀液所得镀层的耐蚀性最差,而以NiCO_3·2Ni(OH)_2·4H_2O为主盐的镀液所得镀层的耐蚀性最好.
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| 关 键 词： | AZ31镁合金 Ni(CH_3COO)_2·4H_2O NiSO_4·6H_2O NiCO_3·2Ni(OH)_2·4H_2O 耐蚀性 |
Effect of Three Kinds of Major Salts on Properties of Electroless Ni-P Coating on AZ31 Magnesium Alloy |
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| YUAN Liang,MA Li-qun,YANG Meng,HE Zhong-chen,DING Yi.Effect of Three Kinds of Major Salts on Properties of Electroless Ni-P Coating on AZ31 Magnesium Alloy[J].Journal of Materials Protection,2010,43(2). |
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| Authors: | YUAN Liang MA Li-qun YANG Meng HE Zhong-chen DING Yi |
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| Affiliation: | YUAN Liang,MA Li-qun,YANG Meng,HE Zhong-chen,DING Yi( College of Materials Science , Engineering,NanjingPolytechnical University,Nanjing 210009,China) |
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| Abstract: | Electroless Ni-P alloy coatingswere prepared on the surface of AZ31 magnesium alloy from thebaths containing three different types of major salts includingnickel sulfate hexahydrate,nickel carbonate basic tetrahydrateand nickel acetate tetrahydrate.The morphology,phosphoruscontent and phase composition of the coatings were studied bymeans of scanning electron microscopy,energy dispersive spec-trometry and X-ray diffraction.The corrosion resistance of thecoatings was evaluated by measuring both electrokineti... |
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| Keywords: | AZ31 magnesium alloy Ni(CH_3COO)_2 4H_2O ance |
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