Question

Which of the following is/are the characteristics of the vapor phase inhibitor?

(a) It has a very high vapor pressure

(b) Inhibit the atmospheric corrosion without being contact with the metal surface

(c) Effective in closed spaces

(d) It has very high vapor pressure, inhibit atmosphere corrosion without being contact with the metal surface and very effective in closed spaces

This question was posed to me in my homework.

My query is from Corrosion Prevention topic in chapter Corrosion Prevention of Corrosion Engineering

Answer 1

The correct choice is (d) It has very high vapor pressure, inhibit atmosphere corrosion without being contact with the metal surface and very effective in closed spaces

For explanation I would say: Vapor-phase inhibitors are very similar to organic adsorption-type inhibitors. Characteristics of vapor-phase inhibitors are:

i. It has a very high vapor pressure

ii. Inhibit the atmospheric corrosion without being contact with the metal surface

iii. Effective in closed spaces.