ABSTRACT Corrosion processes can compromise the durability of metallic materials. One way to minimise the effects of corrosion is to coat them with corrosion-resistant alloys. In this study, Co–W alloys were produced by electrodeposition and their anticorrosive performance was evaluated at different levels of current density, Co bath concentration and bath temperature, using factorial experiment design and ANOVA techniques. This evaluation consisted of measuring corrosion current and using electrochemical impedance spectroscopy. Adherent and corrosion resistant alloys were obtained at the lowest temperature of experimental design (25°C) and current density (10 mA cm−2) values. From the corrosion tests, X-ray Diffraction and Scanning Electron Microscopy analysis it was possible to conclude that the increase in the tungsten percentage in the composition of the alloy generated an increase in corrosion resistance. Although the alloys’ chemical composition has influence on the corrosion resistance, their physical aspect, such as the presence of cracks, are more significant for the resistance to corrosion.

中文翻译：

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使用析因实验设计和方差分析技术，温度、电流密度和钴浓度对电沉积防腐钴钨合金的影响

摘要 腐蚀过程会损害金属材料的耐用性。最小化腐蚀影响的一种方法是用耐腐蚀合金涂覆它们。在这项研究中，通过电沉积生产 Co-W 合金，并使用因子实验设计和方差分析技术在不同水平的电流密度、Co 镀液浓度和镀液温度下评估其防腐性能。该评估包括测量腐蚀电流和使用电化学阻抗谱。在实验设计的最低温度 (25°C) 和电流密度 (10 mA cm-2) 值下获得粘附性和耐腐蚀合金。从腐蚀试验来看，X 射线衍射和扫描电子显微镜分析可以得出结论，合金成分中钨百分比的增加导致耐腐蚀性的增加。虽然合金的化学成分对耐蚀性有影响，但它们的物理方面，如裂纹的存在，对耐蚀性更为重要。