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Which of the following methods is/are used for the surface preparation of a specimen?

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in Corrosion Engineering by (98.5k points)
Which of the following methods is/are used for the surface preparation of a specimen?

(a) Polishing belts

(b) Emery papers

(c) Electrolytic polishing

(d) Polishing belts, emery papers, and electrolytic polishing

I got this question during an online exam.

My question is based upon Testing in chapter Corrosion Testing of Corrosion Engineering

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The correct answer is (d) Polishing belts, emery papers, and electrolytic polishing

For explanation I would say: The surface finish of the specimen is one of the factors of corrosion. Surface preparation of a specimen can be done by using polishing belts, emery papers, and electrolytic polishing.

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