Aluminising of Mild Steel Plates

Figure 6

(a) Intermetallic layer formation at 750°C for 2400 s. At (%) at various locations are (A) 100Fe, (B) 93Fe7Zn, (C) FeAl₃ ratio, Zn 1.4 to 3, (D) Al : Fe ratio 3.6 : 1 to 4.2 : 1, Zn up to 1.2, (G) Fe : Al : Zn = 1 : 94 : 5, (F) Fe : Al : Zn = 80.4 : 18.8 : 0.8.3b: Enlarged at point (E). EDS at arrow point in (b) indicates a ternary system with Fe : Al : Zn = 85.5 : 6.6 : 7.9.

(a)

(b)