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  1. siegenerbuerger

    SiO2-ZrO2 reaction at 1100¦C

    Dear fellows, I have an alloy which is protected by an outer SiO2-scale at high temperatures. The scale forms when you expose the alloy to lets say 1100°C because alloy substrate evaporates leavin SiO2 behind (actually substrate is Mo). Since the alloy also contains ZrO2, particles of ZrO2 can...
  2. siegenerbuerger

    Si active oxidation

    Hello engineering fellows, does anyone have an idea about critical factors for the formation of volatile SiO instead of SiO2, e.g. temperature and oxygen partial pressure? I have an alloy which forms a silica scale at 1200°C under vacuum conditions. The silica appears as small droplets upon...
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