SOME OBSERVATIONS ON BARNACLE GROWTH AND CORROSION OF MATERIALS IN SEAWATER

Stainless steel, nickel, aluminium and mild steel coupons, 40 sqcm in area, were suspended in the coastal waters south the Madras at a depth of 3m. The coupons were periodically observed for barnacle growth and withdrawn after 6 months for a close study of barnacle-induced corrosion. The study showed growth of barnacles reaching a maximum of 12-mm diameter on all the coupons suspended for 200 days except those made of mild steel. The mild steel coupons showed a periodic 'throwing off' of foulants along with corrosion products, resulting in fresh settlement of barnacles. The nickel coupons showed the worst pitting corrosion, and a correlation was observed between dead barnacles and the number of pits. Among the dead barnacles maximum pitting was observed beneath those measuring 8mm.

• Supplemental Notes:
  • Corrosion Prevention and Control, v 38 n 6, Dec 1991, p 145 [6 p, 16 ref, 1 tab, 9 fig]
• Authors:
  • Sasikumar, N
  • Nair, K V
  • Azariah, J
• Publication Date: 1991

Language

• English

Subject/Index Terms

• TRT Terms: Barnacles; Corrosion; Marine fouling; Metals; Naval architecture
• Uncontrolled Terms: Marine structures
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00702025
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM