Endüstriyel Asitleme ile Oluşturulan Yüzey Özelliklerinin Boya Yapışma Direnci ve Korozyon Performansına Etkisi

Abstract

Bu çalışmada, endüstriyel asitleme işlemleri sırasında oluşan ve asit yanığı ve durdurma izleri olarak adlandırılan yüzey kusurlarının düşük karbonlu çelik bir sacın boya yapışma performansı ve korozyon direnci üzerindeki etkisi araştırılmıştır. Optimum ölçüde asitlenmiş, aşırı asitlenmiş ve durdurma izi oluşturulmuş yüzeylerin bu özellikleri, boyama sonrasında yapışma testi (EN ISO 2409:2020) ve tuz püskürtme (ASTM B117-19) testi ile karşılaştırmalı olarak değerlendirilmiştir. Endüstriyel asitleme sınırları içerisinde yürütülen çalışmalardan elde edilen bulgular, hem optimum ölçüde asitlenmiş hem de aşırı asitlenmiş yüzeyler için tatmin edici boya yapışması (Sınıf 0) ve korozyon direnci (Derece 10) ortaya çıkarmıştır. Durdurma izi oluşturulmuş yüzeyler sorunsuz boya yapışması göstermiş, ancak korozyon direncinde hafif bir düşüş (72 saat sonra Derece 9) tespit edilmiştir. Bu kusurların etkisini daha kesin bir şekilde değerlendirmek için, daha zorlu ve uzun süreli duruş koşulları altında ek testler yapılmalı ve bunlar gelişmiş yüzey analiz teknikleriyle desteklenmelidir.

Keywords

• Asitleme
• Boya yapışması
• Tuz püskürtme testi

The Effect of Surface Properties Created by Industrial Pickling on Paint Adhesion Resistance and Corrosion Performance

Abstract

This study investigated the effects of surface defects, known as acid burns and stop marks, formed during industrial pickling processes on the paint adhesion performance and corrosion resistance of a low-carbon steel sheet. These properties of optimally pickled, heavily pickled, and stop mark-formed surfaces were evaluated comparatively using a post-painting adhesion test (EN ISO 2409:2020) and salt spray (ASTM B117-19) tests. Findings from studies conducted within the industrial pickling range revealed satisfactory paint adhesion (Grade 0) and corrosion resistance (Grade 10) for optimally pickled and heavily pickled surfaces. The stop mark-formed surfaces exhibited excellent paint adhesion, but a slight decrease in corrosion resistance (Grade 9 after 72 hours) was observed. To more accurately assess the impact of these defects, additional tests should be conducted under more challenging and prolonged stop conditions, supported by advanced surface analysis techniques.

Keywords

• Pickling
• Paint adhesion
• Salt spray test
• Acid burns
• Low-carbon steel

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