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← ScienceWhich consequence results when the temperature coefficient, α, is too low during a constant-current anodization of aluminum?
A)Reduced oxide layer thickness✓
B)Increased electrical breakdown strength
C)Faster electrolyte consumption rate
D)Higher film growth efficiency
💡 Explanation
A low temperature coefficient results in less heat dissipation, decreasing the oxide formation rate via ion transport because field-enhanced diffusion is lower. This reduced diffusion ultimately limits the final film thickness, therefore less thick film is formed, rather than stronger films or faster consumption.
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