Fig. 6: Marine static immersion test results.

The engineered surface (135 × 400 mm) after immersion for a 40 days and b 77 days. The surface (600 × 600 mm) with the anticorrosive coating after immersion for c 40 days and d 77 days. The marine static immersion test was conducted during the summer at Geoje (34° 53′ 59.8″ N, 128° 37′ 06.1″ E; South Korea). The immersion depth was 1 m.