通过一步水热法在镁合金上形成疏水和耐腐蚀涂层。
Formation of a hydrophobic and corrosion resistant coating on magnesium alloy via a one-step hydrothermal method.
机构信息
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing 400044, China.
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing 400044, China.
出版信息
J Colloid Interface Sci. 2017 Nov 1;505:87-95. doi: 10.1016/j.jcis.2017.05.092. Epub 2017 May 26.
A hydrophobic coating was fabricated on the surface of magnesium alloy using a simple one-step hydrothermal method with the use of environmentally friendly agent. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and contact angle test were used to characterize the surfaces. Corrosion behavior in a 3.5wt.% NaCl solution was evaluated using OCP time curves test, potentiodynamic polarization test and EIS analysis. The findings show that the substrate is covered by the coating of magnesium hydroxide and magnesium stearate, reaching a contact angle of around 146°. Corrosion behavior show huge improvement, the progress with increase of treatment time could be related to the increased growth rate of coating.
采用简单的一步水热法，在镁合金表面制备了一种疏水涂层，使用了环保型试剂。通过扫描电子显微镜、能谱仪、傅里叶变换红外光谱仪、X 射线光电子能谱和接触角测试对表面进行了表征。采用 OCP 时间曲线测试、动电位极化测试和电化学阻抗谱分析评估了在 3.5wt.%NaCl 溶液中的腐蚀行为。结果表明，基底被氢氧化镁和硬脂酸镁的涂层所覆盖，接触角约为 146°。腐蚀行为得到了显著改善，处理时间的增加与涂层生长速率的增加有关。
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