Treatment Predictions

The equilibrium conditions of heat treatments with the presence of gaseous species can also be predicted using the TCS Ni-based Superalloys Database (TCNI), for example oxidation or sulfidation treatments.

Oxide scale formed on Ni-18Cr alloy at 1000 °C a) calculated b) experiments for 20 hours in 1.0 atm O2

Figure 1: Oxide scale formed on Ni-18Cr alloy at 1000 °C (A) calculated (B) experiments for 20 hours in 1.0 atm O2.

ulfidized Ni-18Cr alloy at 1000 °C a) calculated b) experiments for 200 seconds in aS=3.2e-3.

Figure 2: Sulfidized Ni-18Cr alloy at 1000 °C (A) calculated (B) experiments for 200 seconds in aS=3.2e-3. The surface sulfide layer contains particles of CrS (dark grey) and gamma-Ni (light) in a matrix of NiS.