The Effect of Borax on Corrosion of Steels

Öz

In this study, the effect of borax (Na2B4O7) on the corrosion of Ç 1010, Ç 304 and Ç 316 steels was investigated. For this purpose, solutions with borax at different concentrations (0.0125 M, 0.025 M, 0.050 M and 0.100 M) were prepared. Cycling Voltammetry (CV) technique was used to determine the electrochemical behavior of steels in this environment, and Tafel Polarization Method was used to measure corrosion rates. As a result of the experiments, it was determined that the corrosion rate decreased and the corrosion potential increased in all three steels with increasing borax concentrations. The lowest corrosion rate was determined at the highest borax concentration. Corrosion rates of Ç 1010, Ç 304 and Ç 316 steels at 0,100 M borax concentration, it has been measured respectively as 0.251, 0.132 and 0.071 mm / year. Borax protected steels from corrosion by showing anodic inhibitory behavior. It is concluded that the steels can be used safely in borax solutions.

Anahtar Kelimeler

• Boraks
• corrosion
• steel
• Tafel polarization method

Çeliklerin korozyonuna Boraksın Etkisi

Öz

Bu çalışmada Ç 1010, Ç 304 ve Ç 316 çeliklerin korozyonuna boraksın (Na2B4O7) etkisi araştırılmıştır. Bu amaçla farklı derişimlerde (0,0125 M, 0,025 M, 0,050 M ve 0,100 M) borakslı çözeltiler hazırlanmıştır. Çeliklerin bu ortamdaki elektrokimyasal davranışını belirlemek için Dönüşümlü Voltametri (CV) tekniği, korozyon hızlarını ölçmek için ise Tafel Polarizasyon Yöntemi uygulanmıştır. Deneyler sonucunda boraks derişiminin artması ile her üç çelikte korozyon hızının azaldığı ve korozyon potansiyelinin arttığı tespit edilmiştir. En yüksek boraks derişiminde en düşük korozyon hızı Ç 316 çeliğinde belirlenmiştir. Ç 1010, Ç 304 ve Ç 316 çeliklerin 0,100 M boraks derişiminde korozyon hızları sırasıyla; 0,251, 0,132 ve 0,071 mm/yıl olarak ölçülmüştür. Boraks anodik inhibitör davranışı göstererek çelikleri korozyondan korumuştur. Çeliklerin borakslı çözeltilerde güvenle kullanılabileceği sonucuna varılmıştır.

Anahtar Kelimeler

• Boraks
• çelik
• korozyon
• Tafel Polarizasyon metodu

Kaynakça

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