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← ScienceWhich consequence results when sodium chloride deposition concentrates near gas turbine blades?
A)Accelerated high-temperature sulfidation corrosion occurs✓
B)Titanium alloy compressive strength suddenly increases
C)Thermal barrier coating effectiveness increases greatly
D)Platinum aluminide bond coat oxidation slows
💡 Explanation
Concentrated NaCl disrupts the protective oxide layers because ionic compounds form low-melting eutectics with oxides. Accelerated sulfidation occurs, therefore, rather than improved material properties, due to increased reactant diffusion via eutectic regions rather than solid-state diffusion alone.
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