Performance comparison of thermal-sprayed coatings for ductile iron pipe

Gulec A., Cevher O., Ustel F., Turk A., Akinci A., Yilmaz F.

Materials Performance, cilt.50, sa.2, ss.30-36, 2011 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 50 Sayı: 2
  • Basım Tarihi: 2011
  • Dergi Adı: Materials Performance
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.30-36
  • Manisa Celal Bayar Üniversitesi Adresli: Hayır

Özet

A study was conducted to compare the performance of sprayed coatings for ductile iron (DI) pipe. DI pipe samples were coated with zinc (Zn) and Zn/aluminum (Al) 85/15 to conduct the investigations. Structures coated using twin wire electric arc (TWEA) spray techniques were compared and their protective values evaluated, along with accelerated salt spray corrosion tests. The contribution of the surface oxide layer on DI to corrosion-resistance performance was investigated and some empirical studies were conducted on industrially produced pipe coatings and industrial results. The test sample surface, corrosion products and pitting corrosion were investigated by scanning electron microscopy (SEM) at the end of the corrosion test. The results of the investigations revealed that Zn and Zn/Al 85/15 coatings contain oxides and the Zn/Al alloy coating had relatively dense structure with less porosity.