Enhanced corrosion resistance of high-speed railway fastening systems: ZnAl coating on 38Si7 steel
Kovove Materialy, cilt.63, sa.2, ss.119-134, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 63 Sayı: 2
- Basım Tarihi: 2025
- Doi Numarası: 10.31577/km.2025.2.119
- Dergi Adı: Kovove Materialy
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Central & Eastern European Academic Source (CEEAS)
- Sayfa Sayıları: ss.119-134
- Anahtar Kelimeler: corrosion, rail fastening, railway, tension clamp, ZnAl coating
- Yozgat Bozok Üniversitesi Adresli: Evet
Özet
In this study, a ZnAl coating was applied to the SKL14 tension clamp, which is made of 38Si7 chemical composition, one of the HM-type rails fastening components, and its corrosion performance was evaluated. The corrosion test was conducted according to the EN ISO 9227 standard in a 5% NaCl environment for 720 hours. The test results were analyzed by ASTM D610-01. As a result, the non-coated sample completely rusted within 1 hour. The ZnAl coating successfully passed the corrosion test, showing only approximately 3 % rust. Weight losses for the non-coated samples, which completely rusted within the first hour, were found to be 0.02 g, whereas the ZnAl-coated samples exhibited a weight loss of 1.23 g after 720 hours of continuous exposure. The ZnAl coating improved the corrosion resistance of the tension clamp over 720 times and enhanced its mechanical properties.