Fig. 1. XRD patterns of the Fe-Al layer fabricated after 5 h at various temperatures

Fig. 2. Cross-section morphology of the Fe-Al layers fabricated after 5 h at various temperature (a) 923 K, (b) 973 K, (c) 1 023 K, (d) 1 073 K, (e) 1 123 K, (f) 1 173 K

Fig. 3. Cross-section morphology and composition curve of the Fe-Al layers fabricated after 5 h at different temperature (a) 973 K, (b) 1 173 K

Fig. 4. XRD patterns of the Fe-Al layer fabricated at various time

Fig. 5. Cross-section morphology and composition curve of the Fe-Al layers fabricated at different time (a) 2 h, (b) 5 h, (c) 7 h, (d) 10 h

Fig. 6. Correlation curve between the Fe-Al layer thicknesses and different aluminizing temperature

Fig. 7. Correlation curve between the Fe-Al layer thicknesses and different aluminizing time