Table 4-1 Evaluation of the damage time for sheath materials used in MI cables under air or air/H2O mixtures at 1015 ℃
Since the oxidation rate depended upon the parabolic path, it was calculated from the conservative initial exposure. Damage time was predicted based on the oxidation rate and the thickness of the sheath material of the MI cables. Thus, it was confirmed that the NCF600 damage time was four times longer than that of SUS316 at 1015 ℃.
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