Question

Which of the following is/are factors to consider for organic coatings?

(a) Surface preparation only

(b) Surface preparation and selection of primary coating

(c) Surface preparation and selection of primary and top coatings

(d) Selection of primary and top coatings

I have been asked this question during an internship interview.

This intriguing question originated from Corrosion Prevention topic in section Corrosion Prevention of Corrosion Engineering

Answer 1

Right answer is (c) Surface preparation and selection of primary and top coatings

To elaborate: Factors to consider for organic coatings are:

i. Surface preparation usually is done by sandblasting

ii. Selection of primary coatings for strong adhesive bonding

iii. Selection of top coating for appearance and corrosion resistance.