Journals / İmalat Teknolojileri ve Uygulamaları / 2025 / Cilt: 6 Sayı: 3

Development and Evaluation of Hybrid Sol-Gel Coatings for Enhanced Corrosion Resistance on Mild Steel

Yumuşak Çelikte Gelişmiş Korozyon Direnci için Hibrit Sol-Jel Kaplamaların Geliştirilmesi ve Değerlendirilmesi

Pages
287–295
Publication Date
2025-12-30
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Overall, the hybrid sol–gel coatings, especially TEOS/MPTS formulations, exhibit effective physical and chemical protective properties against corrosion and enhanced hydrophobicity and barrier properties.

📌 3 Key Takeaways

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Objective & Hypothesis:This article describes the design, synthesis, and characterization of sol–gel hybrid coatings to improve corrosion protection for low-carbon steel.
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Key Findings & Data:The contact angle measurements demonstrated a significant improvement in hydrophobicity, with System A exhibiting a contact angle value of 89.8° for the TE3 sample.
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Conclusion & Impact:Overall, the hybrid sol–gel coatings, especially TEOS/MPTS formulations, exhibit effective physical and chemical protective properties against corrosion and enhanced hydrophobicity and barrier properties.
🔬Design:Araştırma Makalesi
📍Scope:3 sample
⚙️Variables:Sol-jel kaplama · Yumuşak çelik · Korozyon direnci

Abstract

This article describes the design, synthesis, and characterization of sol–gel hybrid coatings to improve corrosion protection for low-carbon steel. We intensively studied System A (TEOS/MPTS) and System B (TEOS/MPTS/PhTMS). The process included dip-coating, then temperature curing, and we applied techniques like SEM, XRD, FTIR, contact angle measurements, and potentiodynamic Tafel polarization tests to characterize the results. The SEM and FTIR analyses confirmed that we properly developed dense, cross-linked siloxane networks, and XRD patterns suggested mainly amorphous structures. The contact angle measurements demonstrated a significant improvement in hydrophobicity, with System A exhibiting a contact angle value of 89.8° for the TE3 sample. Electrochemical measurements indicated significant corrosion current density decreases for System A (i_corr = 8.13 µA/cm², 91% improvement in comparison to bare steel), while System B showed a relatively less significant enhancement. Contrary to expectations, films cast from freshly synthesized sols outperformed those from aged sols, underlining the significance of sol aging in film homogeneity and barrier performance. Overall, the hybrid sol–gel coatings, especially TEOS/MPTS formulations, exhibit effective physical and chemical protective properties against corrosion and enhanced hydrophobicity and barrier properties. The precursor mixture, sol aging, and deposition parameters must be optimized to ensure optimal performance and uniformity. These findings portend a promising future for these green, scalable, and long-lasting protective coatings in industrial applications.

Özet

Bu çalışma, düşük karbonlu çelik yüzeylerinin korozyona karşı korunmasını artırmak amacıyla hibrit sol–jel kaplamaların tasarımını, sentezini ve karakterizasyonunu sunmaktadır. İki kaplama sistemi incelenmiştir: Sistem A (TEOS/MPTS) ve Sistem B (TEOS/MPTS/PhTMS). Kaplamalar dip-coating yöntemi ile kaplama işlemi yapılmış ve termal kürleme sonrasında SEM, XRD, FTIR, kontak açısı ölçümleri ve potansiyodinamik Tafel polarizasyon testleri ile karakterize edilmiştir.SEM ve FTIR analizleri, yoğunlaştırulmuş ve çapraz bağlı siloksan ağlarının oluşumunu onaylar iken, XRD desenleri kaplamaların önemli ölçüde amorf yapıda olduğunu ortaya koymuştur. Kontak açısı ölçümleri, Sistem A'da TE3 örneğinde 89,8° ile hidrofobiklikte önemli bir artışı ortaya koymuştur. Elektrokimyasal ölçümler, Sistem A için korozyon akım yoğunluğunun (i_corr = 8,13 µA/cm², çıplak çelik ile karşılaştırıldığında ~%91 iyileşme) önemli ölçüde azaldığını göstermiştir, Sistem B orta seviyede bir iyileşme göstermiştir. Özellikle, taze hazırlanmış sol çözeltilerle uygulanan kaplamalar, yaşlandırılmış sol çözeltilere göre daha iyi performans sergileyerek, solün yaşlanmasının film homojenliği ve bariyer etkinliği üzerindeki kritik rolünü vurgulamıştır. Elde edilen sonuçlar, özellikle TEOS/MPTS bazlı hibrit sol–jel kaplamaların, korozyona karşı etkili fiziksel ve kimyasal bir bariyer sağladığını, hidrofobikliği ve bariyer özelliklerini artırdığını göstermektedir. Kaplayıcı performansın maksimize edilmesi ve tekrarlanabilirliğin sağlanması için öncü bileşen oranı, sol yaşlanma süresi ve uygulama parametrelerinin optimize edilmesi önemlidir. Bulgular, bu çevre dostu, ölçeklenebilir ve dayanıklı koruyucu kaplamaların endüstriyel uygulamalar için büyük potansiyele sahip olduğunu gösteriyor.

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Cite This Article

Al-owaidi, M. J. A., Kara, İ. H., Hayat, F. (2025). Development and Evaluation of Hybrid Sol-Gel Coatings for Enhanced Corrosion Resistance on Mild Steel. İmalat Teknolojileri ve Uygulamaları, Cilt: 6 Sayı: 3, 287–295. https://doi.org/10.52795/mateca.1736960

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