| 涂敷型铬酸盐钝化膜的结构与耐蚀性 |
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| 引用本文： | 卢燕平,任玉苓.涂敷型铬酸盐钝化膜的结构与耐蚀性[J].电镀与涂饰,1997,16(3):8-11,21. |
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| 作者姓名： | 卢燕平 任玉苓 |
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| 作者单位： | [1]北京科技大学表面科学与腐蚀工程系 [2]宝山钢铁集团公司冷轧厂 |
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| 摘 要： | 采用ＳＲＤ，ＥＤＸＡ，ＧＤＳ等方法研究了镀锌钢板表面涂敷型ＣｒＯ３－Ｈ３ＰＯ４－ＳｉＯ２系钝化膜的成分与结构。该钝化膜是一种由ＣｒＯ３，Ｃｒ（ＯＨ）３，ＣｒＯＯＨ，ＺｎＣｒＯ４，ＺｎＳｉＯ３，Ｚｎ３（ＰＯ４）２，ＣｒＰＯ４和ＳｉＯ２组成的凝胶网络状结构的涂敷型复合转化膜。探讨了其耐蚀机理，中性盐雾试验表明：该钝化膜的耐蚀性大大优于ＣｒＯ３－ＳｉＯ２系钝化膜。
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| 关 键 词： | 电镀 锌钢板 铬酸盐钝化 耐蚀性 钝化膜 |
Structure and Corrosion Resistance of Dry-in-place Chromating Coating |
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| LU Yanping , WU Jixun , REN Yuling.Structure and Corrosion Resistance of Dry-in-place Chromating Coating[J].Electroplating & Finishing,1997,16(3):8-11,21. |
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| Authors: | LU Yanping WU Jixun REN Yuling |
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| Affiliation: | LU Yanping ; WU Jixun ; REN Yuling |
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| Abstract: | Composition and structure of dry- in - place CrO3 - H3PO4-SiO2 chromating film on galvanized steel sheet were studied by means of XRD, SEM, EDXA and GDS.The chromating filin is a complex chemical conversion coating with gelatineous net structure containing CrO3, Cr(OH)3,CrOOH, ZnCrO4, ZnSiO3, Zn3(PO4)2. CrPO4 and SiO2. Corrosion protection mechanism was also discussed. Salt spray test results show that its corxosion resistance is much better than that of CrO3- SiO2 chromating coating. |
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| Keywords: | galvanized steel sheet dry-in-place chromating coating |
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