高波,董立洋,朱广林,高超,周英伟.热镀锌板双硅烷无铬钝化膜性能的研究[J].表面技术,2017,46(6):202-206.
GAO Bo,DONG Li-yang,ZHU Guang-lin,GAO Chao,ZHOU Ying-wei.Properties of Bis-silane Chromium-free Passive Film on Hot-dip Galvanized Steel[J].Surface Technology,2017,46(6):202-206 |
| 热镀锌板双硅烷无铬钝化膜性能的研究 |
| Properties of Bis-silane Chromium-free Passive Film on Hot-dip Galvanized Steel |
| 投稿时间：2017-01-15 修订日期：2017-06-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.06.032 |
| 中文关键词: 热镀锌板 耐腐蚀性能 硅烷 无铬 钝化膜 |
| 英文关键词:hot-dip galvanized steel corrosion resistance silane chromium-free passive film |
| 基金项目:国家自然科学基金（51671052） |
| 作者 | 单位 |
| 高波 | 东北大学 冶金学院，沈阳 110819 |
| 董立洋 | 东北大学 冶金学院，沈阳 110819 |
| 朱广林 | 东北大学 冶金学院，沈阳 110819 |
| 高超 | 东北大学 冶金学院，沈阳 110819 |
| 周英伟 | 东北大学 冶金学院，沈阳 110819 |
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| Author | Institution |
| GAO Bo | School of Metallurgy, Northeastern University, Shenyang 110819, China |
| DONG Li-yang | School of Metallurgy, Northeastern University, Shenyang 110819, China |
| ZHU Guang-lin | School of Metallurgy, Northeastern University, Shenyang 110819, China |
| GAO Chao | School of Metallurgy, Northeastern University, Shenyang 110819, China |
| ZHOU Ying-wei | School of Metallurgy, Northeastern University, Shenyang 110819, China |
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| 中文摘要: |
| 目的 为进一步提高热镀锌板无铬钝化膜的耐腐蚀性能。方法 以偏钒酸铵和氟钛酸作为无机组分，添加主要成膜物质苯丙乳液，通过硅烷偶联剂KH-560和KH-570将两者紧密连接，在热镀锌板表面获得一层耐腐蚀性较强的双硅烷无铬钝化膜。采用中性盐雾试验、电化学试验、扫描电镜（SEM）、傅里叶红外光谱（FTIR）等表征钝化膜的耐腐蚀性能。结果 热镀锌板-双硅烷无铬钝化膜经96 h中性盐雾试验，腐蚀面积在2%~4%，腐蚀电流密度比热镀锌板基体降低一个数量等级，这表明双硅烷无铬钝化膜能提供良好的耐腐蚀能力。SEM分析表明在热镀锌板表面生成了一层均匀、连续、致密的钝化薄膜，钝化膜的厚度大约在3 μm。FTIR分析表明，双硅烷无铬钝化膜中存在—(CH2)n—、C＝O、Si—O、Si—O—Si、Si—O—Zn键。结论 在热镀锌板表面生成了一层均匀、致密的钝化膜，使热镀锌板呈现良好的耐腐蚀性能，且满足工业应用标准。 |
| 英文摘要: |
| The work aims to further improve corrosion resistance of chromium-free passive film on hot-dip galvanized steel. With H2TiF6 and NH4VO3 as proper inorganic constituents and styrene-acrylic emulsion as major film-forming material, a layer of corrosive bis-silane chromium-free passive film was obtained on hot-dip galvanized steel by binding the constituents tightly using silicon coupling agent (KH-560, KH-570). Corrosion resistance of the bis-silane chromium-free passive film was characterized by neutral salt spray test, electrochemical test, scanning electron microscopy and Fourier infrared spectroscopy. Corrosion area of the film accounted for approximately 2%~4% after 96 h neutral salt spray test, and corrosion current density was one order of magnitude lower than that of untreated hot-dip galvanized steel, indicating that the bis-silane chromium-free passive film could exhibit excellent corrosion resistance. SEM analysis showed that a nearly 3 μm thick uniform, continuous and compact passive film took shape on the surface of hot-dip galvanized steel. FTIR analysis indicated that —(CH2) n—, C＝O, Si—O, Si—O—Si and Si—O—Zn bonds were present in the passive film. The hot-dip galvanized steel exhibits excellent corrosion resistance and meets requirements of industrial application since a layer of uniform and compact passive film takes shape on the surface of hot-dip galvanized steel. |
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