762 Localized Corrosion Resistance

Localized corrosion has caused more failures in the CPI than any other single corrosion phenomena. Chromium, molybdenum, nitrogen, and to a lesser extent tungsten contribute significantly to enhancing pitting and crevice corrosion resistance of nickel base alloys. Table 7.8 shows the critical pitting and crevice corrosion behavior of these alloys per American Society for Testing and Materials (ASTM) G-48 (10% ferric chloride) test method. As is evident the lower molybdenum containing alloy C-22 had significantly lower critical corrosion

TABLE 7.9 Localized Corrosion Resistance in Green Death Solution

TABLE 7.9 Localized Corrosion Resistance in Green Death Solution

Alloy

0 0

Post a comment