Influence of oxides on high velocity arc sprayed Fe-Al/Cr3C2 composite coatings

Fe-Al/Cr3C2 coatings were sprayed on low steel by high velocity arc spraying (HVAS) technology. The influences of oxides on erosion, corrosion and wear behavior for high velocity arc sprayed Fe-Al/Cr3C2 coatings were studied. The results show that HVAS-sprayed Fe-Al/Cr3C2 coatings have good erosion, heat corrosion and wear resistance. The erosion resistance improves with the increase of the temperature. On one hand, the ferrous oxides are incompact, so they peel off the surface of the coatings easily during the high temperature erosion. On the other hand, compact Al2O3 films on the surface can protect the coatings.

[1]  A. Huntz,et al.  Effect of the Application of a Mechanical Load on the Oxide-Layer Microstructure and on the Oxidation Mechanism of Ni–20Cr Foils , 2000 .

[2]  J. Celis,et al.  Sliding wear behavior of thermally sprayed 75/25 Cr3C2/NiCr wear resistant coatings , 1996 .

[3]  C. Xu,et al.  High temperature oxidation behaviour of FeAl intermetallics—oxide scales formed in ambient atmosphere , 2000 .

[4]  K. Kurzydłowski,et al.  Quantitative characteristics of FeCrAl films deposited by arc and high-velocity arc spraying , 2001 .

[5]  H. Steffens,et al.  The “sonarc” process: Combining the advantages of arc and HVOF spraying , 1994 .

[6]  E. Sampson,et al.  Arc spray process for the aircraft and stationary gas turbine industry , 1997 .

[7]  P. March,et al.  THE RESISTANCE OF NICKEL AND IRON ALUMINIDES TO CAVITATION EROSION AND ABRASIVE WEAR , 1990 .

[8]  I. Baker,et al.  Mechanical properties of FeAl , 1997 .

[9]  M. Hyland,et al.  Study of the influence of microstructural properties on the sliding-wear behavior of HVOF and HVAF sprayed WC-cermet coatings , 1999 .

[10]  P. Shipway,et al.  A comparison of the abrasive wear behaviour of HVOF sprayed titanium carbide- and titanium boride-based cermet coatings , 2001 .

[11]  V. Sobolev,et al.  Dynamic processes during high velocity oxyfuel spraying , 1996 .

[12]  R. Link,et al.  The Response of Alloys to Erosion-Corrosion at High Temperatures , 1998 .

[13]  P. Tortorelli,et al.  Behavior of iron aluminides in oxidizing and oxidizing/sulfidizing environments , 1992 .