C. M. P. Kumar, Avinash Lakshmikanthan, M. Chandrashekarappa, D. Pimenov, K. Giasin
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The influence of WC nanoparticles on Zn–Ni deposition was also investigated. The surface morphologies, texture coefficients via XRD (X-ray diffraction), SEM (Scanning Electron Microscopy), and EDS (Energy-dispersive X-ray spectroscopy) were analyzed. The electrochemical test such as polarization curves (PC) and electrochemical impedance spectroscopy (EIS) resulted in a corrosion rate of 0.6948 A/min for Zn–Ni–WC composite nanocoating, and 1.192 A/min for Zn–Ni coating. The results showed that the Zn–Ni–WC composite nanocoating reduced the corrosion rate by 41.71% and showed an 8.56% increase in microhardness compared to the hardness of the Zn–Ni coating. These results are augmented to better wettable characteristics of zinc, which developed good interfacial metallurgical adhesion amongst the Ni and WC elements. The results of the novel Zn–Ni–WC nanocomposite coatings achieved a great improvement of mechanical property and corrosion protection to the steel substrate surface.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":"29 1","pages":"712"},"PeriodicalIF":0.0000,"publicationDate":"2021-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"23","resultStr":"{\"title\":\"Electrodeposition Based Preparation of Zn–Ni Alloy and Zn–Ni–WC Nano-Composite Coatings for Corrosion-Resistant Applications\",\"authors\":\"C. M. P. Kumar, Avinash Lakshmikanthan, M. Chandrashekarappa, D. Pimenov, K. Giasin\",\"doi\":\"10.3390/COATINGS11060712\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Zinc (Zn) is one of the five most widely consumed metals in the world. Indeed, more than 50% of all the zinc produced is used in zinc-galvanizing processes to protect steel from corrosion. 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The electrochemical test such as polarization curves (PC) and electrochemical impedance spectroscopy (EIS) resulted in a corrosion rate of 0.6948 A/min for Zn–Ni–WC composite nanocoating, and 1.192 A/min for Zn–Ni coating. The results showed that the Zn–Ni–WC composite nanocoating reduced the corrosion rate by 41.71% and showed an 8.56% increase in microhardness compared to the hardness of the Zn–Ni coating. These results are augmented to better wettable characteristics of zinc, which developed good interfacial metallurgical adhesion amongst the Ni and WC elements. 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引用次数: 23
摘要
锌是世界上消费最广泛的五种金属之一。事实上,生产的所有锌中有50%以上用于锌镀锌工艺,以保护钢材免受腐蚀。锌基涂层具有用作耐腐蚀屏障的潜力,但由于锌的机械性能较差,因此其广泛使用受到限制,而锌需要保护钢和其他金属不生锈。在锌镀层中加入Ni(镍)、WC(碳化钨)等其他合金元素可以改善镀层的性能。研究了在低碳钢基体上制备的Zn-Ni涂层和Zn-Ni - wc复合纳米涂层在环保镀液中的腐蚀性能。研究了纳米WC对Zn-Ni沉积的影响。通过XRD (x射线衍射)、SEM(扫描电子显微镜)和EDS(能量色散x射线能谱)分析了材料的表面形貌和织构系数。极化曲线(PC)和电化学阻抗谱(EIS)等电化学测试结果表明,Zn-Ni - wc复合纳米涂层的腐蚀速率为0.6948 a /min, Zn-Ni复合纳米涂层的腐蚀速率为1.192 a /min。结果表明,与Zn-Ni涂层相比,Zn-Ni - wc复合纳米涂层的腐蚀速率降低了41.71%,显微硬度提高了8.56%。锌具有较好的可湿性,在镍和WC元素之间形成了良好的界面冶金附着力。结果表明,新型的Zn-Ni-WC纳米复合涂层对钢基体表面的力学性能和防腐性能都有很大的改善。
Electrodeposition Based Preparation of Zn–Ni Alloy and Zn–Ni–WC Nano-Composite Coatings for Corrosion-Resistant Applications
Zinc (Zn) is one of the five most widely consumed metals in the world. Indeed, more than 50% of all the zinc produced is used in zinc-galvanizing processes to protect steel from corrosion. Zn-based coatings have the potential for use as a corrosion-resistant barrier, but their wider use is restricted due to the poor mechanical properties of Zn that are needed to protect steel and other metals from rusting. The addition of other alloying elements such as Ni (Nickle) and WC (Tungsten Carbide) to Zn coating can improve its performance. This study investigates, the corrosion performance of Zn–Ni coating and Zn–Ni–WC composite nanocoatings fabricated on mild steel substrate in an environmentally friendly bath solution. The influence of WC nanoparticles on Zn–Ni deposition was also investigated. The surface morphologies, texture coefficients via XRD (X-ray diffraction), SEM (Scanning Electron Microscopy), and EDS (Energy-dispersive X-ray spectroscopy) were analyzed. The electrochemical test such as polarization curves (PC) and electrochemical impedance spectroscopy (EIS) resulted in a corrosion rate of 0.6948 A/min for Zn–Ni–WC composite nanocoating, and 1.192 A/min for Zn–Ni coating. The results showed that the Zn–Ni–WC composite nanocoating reduced the corrosion rate by 41.71% and showed an 8.56% increase in microhardness compared to the hardness of the Zn–Ni coating. These results are augmented to better wettable characteristics of zinc, which developed good interfacial metallurgical adhesion amongst the Ni and WC elements. The results of the novel Zn–Ni–WC nanocomposite coatings achieved a great improvement of mechanical property and corrosion protection to the steel substrate surface.