- Possible Erosion Mechanisms -

• Oxidation

  • FeO, Fe2O3, Fe3O4

• Hydrogen Embrittlement

  • in H-rich atmospheres, solid grain ablation

• Pyrolysis

  • melting of the surface

• Spallation

  • cracking and loss of the coating and steel surface

• Carburization

  • carbon diffusion into the surface

In-situ experiments are difficult:
Which of these actually occur?
Which is dominant?

Picture: P.J. Cote, C. Rickard. Wear, 241, p.17-25 (2000).

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