Oxide Spallation During Post-isothermal High Temperature Oxidation Cooling of Cr-rich Cast Alloys Highly Alloyed with Hf

Fig. (9) Surface states of three of the HfC-containing nickel-based samples after oxidation (here after 46h at 1200°C): Ni-25Cr-0.25C-3.7Hf alloy (A), of the Ni-25Cr-0.50C-3.7Hf alloy (B) and of the Ni-25Cr-0.50C-5.6Hf alloy (C).