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Which of the following noble metals will improve the corrosion resistance of titanium and chromium on galvanic coupling?

Which of the following noble metals will improve the corrosion resistance of titanium and chromium on galvanic coupling? Correct Answer Platinum, palladium, and rhodium

Noble metals such as platinum, palladium, and rhodium on galvanic coupling will improve the corrosion resistance of titanium and chromium by spontaneous passivation. It is due to the mixed potential of the couple lies in the passive region of titanium and chromium.

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