李俊松,何京生,李春晓,刘琪.镁合金表面二维MoS2薄膜的制备及其耐蚀性能研究[J].表面技术,2022,51(8):375-380, 459.
LI Jun-song,HE Jing-sheng,LI Chun-xiao,LIU Qi.Preparation and Corrosion Resistance Study of 2D-MoS2 Thin Films on Magnesium Alloy Surface[J].Surface Technology,2022,51(8):375-380, 459 |
| 镁合金表面二维MoS2薄膜的制备及其耐蚀性能研究 |
| Preparation and Corrosion Resistance Study of 2D-MoS2 Thin Films on Magnesium Alloy Surface |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.08.033 |
| 中文关键词: 镁合金 电泳沉积法 二维纳米材料 MoS2 耐蚀性能 |
| 英文关键词:magnesium alloy electrophoresis deposition method 2D-nanomaterials MoS2 corrosion resistance |
| 基金项目:安徽省自然科学基金(2008085ME132) |
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| Author | Institution |
| LI Jun-song | School of Materials Science and Engineering, Anhui Polytechnic University, Anhui Wuhu 241000, China |
| HE Jing-sheng | School of Materials Science and Engineering, Anhui Polytechnic University, Anhui Wuhu 241000, China |
| LI Chun-xiao | School of Materials Science and Engineering, Anhui Polytechnic University, Anhui Wuhu 241000, China |
| LIU Qi | School of Materials Science and Engineering, Anhui Polytechnic University, Anhui Wuhu 241000, China |
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| 中文摘要: |
| 目的 提高镁合金的耐蚀性能。方法 借助曲拉通X-100(电泳级)将MoS2粉末充分分散到去离子水中作为电泳溶液，采用电泳沉积法在镁合金表面制备二维MoS2薄膜，试验主要探究不同电泳沉积时间对薄膜耐蚀性能的影响。通过动态电位极化曲线测试和亲疏水性能测试，分别评价二维MoS2薄膜的耐蚀性能和润湿性，并通过扫描电子显微镜(SEM)和X-射线衍射仪(XRD)对二维MoS2薄膜的微观形貌和物相结构进行表征，分别分析电泳沉积时间为30、60、90、120 s时薄膜的微观形貌及其对镁合金的防护作用。结果 当电泳沉积时间为60 s时，MoS2薄膜最为完整且致密，随着沉积时间的增加，薄膜厚度增加，但出现明显裂纹。当电泳沉积时间为60 s时，样品的腐蚀电位最正，为–0.99 V;腐蚀电流密度最小，为9.78×10–6 A.cm–2。相对于镁合金基体，电泳沉积后样品的腐蚀电位正移了0.46 V，腐蚀电流密度减小了93%。电泳后金属的静态接触角增大，最高达到86.34°。结论 在镁合金表面制备二维MoS2薄膜可有效提高镁合金耐蚀性能，且电泳沉积时间为60 s时薄膜腐蚀电位最正、腐蚀电流密度最小，此时耐蚀性能最佳。 |
| 英文摘要: |
| In order to improve the corrosion resistance of magnesium alloy, 2D-MoS2 thin films were prepared on magnesium alloy surface by electrophoresis deposition. The electrophoresis solution was prepared by dispersing MoS2 powder into deionized water by means of Triton X-100 (electrophoresis grade). The experiment mainly explored the influence of different electrophoretic deposition time on the corrosion resistance of the thin films. The corrosion resistance and wettability of 2D-MoS2 films were evaluated by dynamic potential polarization curve test and hydrophobic performance test, respectively. The microstructure and phase structure of 2D-MoS2 films were characterized by scanning electron microscope (SEM) and X-ray diffractive (XRD). The micromorphology of thin films and their protective effects on magnesium alloys when electrophoretic deposition time is 30, 60, 90 and 120 s were analyzed. The results show that MoS2 film are the most complete and compact when electrophoretic deposition time is 60 s. With the increase of deposition time, the film thickness increases and obvious cracks appear. When electrophoretic deposition time is 60 s the most positire corrosion potential of this surface-treated magnesium alloy is –0.99 V, which is positively shifted by 0.46 V compared to that of untreated magnesium alloy. And minimum corrosion current density is 9.78×10–6 A.cm–2, which decreased by 93%. After electrophoresis, the static contact angle of the metal increases and reaches up to 86.34°. The conclusion is that 2D-MoS2 thin films prepared on the surface of magnesium alloy can effectively improve the corrosion resistance of magnesium alloy, and the corrosion potential of films is the most positive and the corrosion current density is smallest when the deposition time of MoS2 films is 60 s, which shows the best corrosion-resistant performance. |
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