Table 5 Corrosion criteria (C.R and ηw %) from WL of Inconel 800 dissolution in the corrosive environment in the presence and non-presence of NCDs at the studied temperatures after 240 min.
Temp (°C) | [inh.] × 10–6 M | NCD1 | NCD2 | ||
|---|---|---|---|---|---|
C.R (mg/cm2/min) | ηw (%) | C.R (mg/cm2/min) | ηw (%) | ||
25 | Blank | 0.191 | – | 0.191 | – |
5 | 0.061 | 68.1 | 0.051 | 73.3 | |
9 | 0.052 | 72.8 | 0.032 | 83.2 | |
13 | 0.042 | 78.0 | 0.025 | 86.9 | |
17 | 0.034 | 82.2 | 0.021 | 89.0 | |
21 | 0.016 | 91.6 | 0.013 | 93.2 | |
35 | Blank | 0.245 | – | 0.245 | – |
5 | 0.082 | 66.5 | 0.073 | 70.2 | |
9 | 0.074 | 69.8 | 0.061 | 75.1 | |
13 | 0.063 | 74.3 | 0.055 | 77.6 | |
17 | 0.054 | 78.0 | 0.046 | 81.2 | |
21 | 0.039 | 84.1 | 0.031 | 87.3 | |
45 | Blank | 0.283 | – | 0.283 | – |
5 | 0.101 | 64.3 | 0.091 | 67.8 | |
9 | 0.092 | 67.5 | 0.075 | 73.5 | |
13 | 0.071 | 74.9 | 0.063 | 77.7 | |
17 | 0.063 | 77.7 | 0.052 | 81.6 | |
21 | 0.052 | 81.6 | 0.043 | 84.8 | |
55 | Blank | 0.355 | – | 0.355 | – |
5 | 0.132 | 62.8 | 0.121 | 65.9 | |
9 | 0.121 | 65.9 | 0.114 | 67.9 | |
13 | 0.118 | 66.8 | 0.105 | 70.4 | |
17 | 0.082 | 76.9 | 0.075 | 78.9 | |
21 | 0.074 | 79.2 | 0.064 | 82.0 | |
65 | Blank | 0.496 | 0.496 | ||
5 | 0.234 | 52.8 | 0.185 | 62.7 | |
9 | 0.201 | 59.5 | 0.165 | 66.7 | |
13 | 0.186 | 62.5 | 0.134 | 73.0 | |
17 | 0.154 | 69.0 | 0.116 | 76.6 | |
21 | 0.122 | 75.4 | 0.097 | 80.4 | |
