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首页> 外文期刊>International Journal of Electrochemical Science >Electrodeposition of Ternary Zn-Cr2O3-SiO2 Nanocomposite Coating on Mild Steel for Extended Applications
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Electrodeposition of Ternary Zn-Cr2O3-SiO2 Nanocomposite Coating on Mild Steel for Extended Applications

机译：低碳钢上三元Zn-Cr 2 O 3 -SiO 2 纳米复合涂层的电沉积

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摘要

Nano-materials surface engineering is the key constituent for advanced manufacturing and highperformance engineering components. Zn-Cr2O3-SiO2 nanocomposite coatings were produced fromelectrolytic chloride bath solution on the surface of mild steel. The surface morphology, structuralanalysis and composition of the coatings was studied using Scanning electron microscope equippedwith energy dispersive spectrometry (EDS) and X-ray diffractometer. The mixed oxide nanocompositeincorporated coating revealed a modification in crystallographic orientation and refinement of crystalswas observed. Potentiodynamic polarization technique was used to investigate the corrosion behaviorof the composites in 3.65% NaCl solution. The nanocomposites were also evaluated for theirmechanical and tribological properties using CETR reciprocating sliding tester and diamond basemicrohardness indenter respectively. Zn-2.5g/L Cr2O3-7.5g/L SiO2 exhibited better corrosionresistance and high microhardness values. An improvement in tribological behavior was also achievedfor all the composites coatings fabricated. Heat treatment tests showed that the composite coatingsexhibit better thermal stability properties than Zn coatings.
机译：纳米材料表面工程是先进制造和高性能工程组件的关键组成部分。 Zn-Cr2O3-SiO2纳米复合涂层是由低碳钢表面的电解氯化物浴溶液制成的。使用配备有能量色散光谱仪（EDS）和X射线衍射仪的扫描电子显微镜研究了涂层的表面形貌，结构分析和组成。混合氧化物纳米复合材料涂层揭示了晶体学取向的改变，并且观察到晶体的细化。电位动力极化技术用于研究复合材料在3.65％NaCl溶液中的腐蚀行为。还分别使用CETR往复滑动测试仪和金刚石基显微硬度压头评估了纳米复合材料的机械性能和摩擦学性能。 Zn-2.5g / L Cr2O3-7.5g / L SiO2具有更好的耐蚀性和较高的显微硬度值。所有制造的复合涂层的摩擦性能也得到了改善。热处理测试表明，该复合涂层具有比Zn涂层更好的热稳定性能。

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