نوع مقاله : مقاله کامل پژوهشی
نویسندگان
1 مجتمع مواد و فناوری های ساخت، دانشگاه صنعتی مالک اشتر، تهران، ایران
2 باشگاه پژوهشگران جوان و نخبگان، واحد دزفول، دانشگاه آزاد اسلامی، دزفول، ایران
چکیده
در این پژوهش، اثر افزودن ایتریا و بنزوتریازول بر رفتار خوردگی و فعال‌سازی سازوکار خودترمیم‌شوندگی در پوشش‌های نانوساختار پایه آلومینا مورد بررسی قرار گرفت. پوشش‌های پایه سرامیکی تک‌جزئی آلومینا، دو‌جزئی آلومینا- ایتریا و سه‌جزئی آلومینا- ایتریا- بنزوتریازول جهت بهبود رفتار خوردگی فولاد St52 توسط فرایند سل- ژل برروی سطح فولاد St52 لایه‌نشانی شدند. سپس آنالیز فازی، مورفولوژی و توپوگرافی این پوشش‌ها به‌ترتیب توسط GIXRD،FE-SEM و AFMارزیابی شده است. هم‌چنین به منظور بررسی توزیع عناصر در پوشش‌های لایه‌نشانی شده از آنالیز EDS استفاده گردید. در نهایت، رفتار خوردگی پوشش‌های لایه‌نشانی شده و زیرلایه مورد بررسی، در زمان‌های غوطه‌وری 1، 48 و 96 ساعت در محلول 3.5wt.%NaCl توسط آزمون‌های طیفسنجی امپدانس الکتروشیمیایی و پلاریزاسیون پتانسیودینامیک مورد بررسی قرار گرفت. نتایج GIXRD بیانگر آمورف بودن پوشش‌ها و عدم تشکیل ساختار بلوری بود. مشاهدات FE-SEM و AFM نشان‌دهنده بدون نقص بودن پوشش‌های دو‌جزئی آلومینا- ایتریا و سه‌جزئی آلومینا- ایتریا- بنزوتریازول در مقایسه با پوشش تک‌جزئی آلومینا بود.
کلیدواژه‌ها
عنوان مقاله [English]
Review of the Effect of Presence of Yttria and Benzotriazole Inhibitor Factor on Electrochemical Properties and Activation of Self-Healing Mechanism in Alumina-Based Coatings
نویسندگان [English]
- Saeid Mersagh Dezfuli 1
- Masoud Sabzi 2
1 Metallurgy Engineering, Metallic Materials Research Center, Malek Ashtar University of Technology (MUT), Tehran, Iran
2 Young Researchers and Elite Club, Dezful Branch, Islamic Azad University, Dezful, Iran
چکیده [English]
In this study, the effect of yttria and benzotriazole doping on corrosion behavior and activation of self-healing mechanism in Alumina-based nanostructured coatings was investigated. Single-component Alumina, double-component Alumina-Ytteria, and triple-component Alumina-Ytteria-benzotriazole ceramic-based coatings have been layer-deposited over St52 steel surface by the sol-gel process in order to improve the abrasion and corrosion behaviour of this steel. Afterwards, phase analysis, morphology, and topography of these coatings have been carried out respectively by Grazing Incidence X-ray Diffraction (GIXRD), Field Emission Scanning Electron Microscopy (FE-SEM), and Atomic Force Microscopy (AFM). Moreover, in order to investigate elemental distribution in layer-deposited coatings, Energy Dispersive Spectroscopy (EDS) was performed. Also, the corrosion behaviour of under-investigation coatings and substrate were studied using electrochemical impedance spectroscopy and potentiodynamic polarization for 1, 48, and 96 hours of immersion in 3.5wt%NaCl solution. GIXRD results revealed the amorphous nature of the coatings and the absence of formation of crystalline structure. AFM and FE-SEM observations revealed intactness of double-component Alumina-Ytteria and Alumina-Ytteria-benzotriazole coatings in comparison with single component Aluminacoating.
کلیدواژه‌ها [English]
- Alumina-based coatings
- Yttria
- Benzotriazole
- Corrosion behavior
- Self-healing mechanism
- Sol-gel
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- Sabzi, M., Mersagh Dezfuli, S., “Drastic improvement in mechanical properties and weldability of 316L stainless steel weld joints by using electromagnetic vibration during GTAW process”, J of Manufacturing Processes, 33 (2018) 74-85.
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- Mersagh Dezfuli, S., Sabzi, M., “A study on the effect of presence of CeO2 and benzotriazole on activation of self‐healing mechanism in ZrO2 ceramic‐based coating”, International Journal of Applied Ceramic Technology, 15 (2018) 1248-1260.
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- Sabzi, M., Mersagh Dezfuli, S., Moeini Far, S., “Deposition of Ni-tungsten carbide nanocomposite coating by TIG welding: Characterization and control of microstructure and wear/corrosion responses”, Ceramics International, (2018) 1-14. Available online 10 September 2018, https://doi.org/10.1016/j.ceramint.2018.09.073
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