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What are the applications of chromium plating?

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What are the applications of chromium plating?

(a) Plastics

(b) Wheel and rims

(c) IC engine parts

(d) Castings

The question was posed to me in an interview.

This key question is from Mechanical Tests on Metals, Protection Against Wear topic in chapter Wear of Metals, Mechanical Properties and Testing of Engineering Material & Metallurgy

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Correct option is (c) IC engine parts

Explanation: The high corrosion-resistance of chromium is useful for reducing wear under corrosive conditions. Chromium plating is used in the cylinders and piston rings of internal combustion engines. The two types of chromium plating used are hard chromium and porous chromium.

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