Civil Engineering Handbook

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oxide n

AI-NI layer oxide

Al-Nl layer

Figure 3 REM images of cross section of surface layers before and after inmersión test at 650'C under 70%air-30%C0i atmosphere.

oxide n

AI-NI layer diffused layer oxide

Al-Nl layer diffused layer

Figure 3 REM images of cross section of surface layers before and after inmersión test at 650'C under 70%air-30%C0i atmosphere.