Combating Corrosion Degradation of Turbine Materials Using HVOF Sprayed 25% (Cr₃C₂-25(Ni20Cr)) + NiCrAlY Coating

Figure 11

SEM and EDX analysis of 25% (Cr₃C₂-25(Ni20Cr)) + NiCrAlY coated materials subjected to hot corrosion for 50 cycles in Na₂SO₄ + 50%V₂O₅ at 800°C. (a) Ti-31, (b) Superco-605, and (c) MDN-121.

(a)

(b)

(c)