Document Type
Thesis
Date of Award
6-30-1961
Degree Name
Master of Science in Chemical Engineering - (M.S.)
Department
Chemical Engineering
First Advisor
John W. Axelson
Second Advisor
C. L. Mantell
Third Advisor
James A. Bradley
Abstract
An experimental program was set up to investigate the effect of temperature on the protection efficiency of various inhibitors of metal corrosion. Contrary to most studies, an appreciable amount of the work was done with the corrosive effect being determined on the metal specimens that were exposed first to the inhibitor, then to air at different temperature, and finally to the corrosive medium with no inhibitor present. The purpose being to determine whether the inhibitor treatment would provide a permanent protection for a metal surface or would it be necessary to furnish a continuous supply of the inhibitor to the system.
Corrosion tests were conducted using such inhibitors as inorganic nitrites, dichromates, phosphates, silicates, iodides, as well as organic nitrites and amines. Test specimens were of mild steel, type 504 and 410 stainless steels, aluminum, and galvanized steel. The corrosion media were selected for the specific system and consisted of various concentrations of different acids, chlorides, and hydroxides.
Both elevated temperature (120 to 145°C) and a depletion of the inhibitor from a corrosive medium had a deleterious effect upon the corrosion protective efficiency of the investigated inhibitors. Depending upon the corrosive system used, such degradation of the inhibitive value was manifested as (a) a reduction in corrosion protection, (b) a complete loss in the protection, or (c) as an acceleration of corrosion.
Recommended Citation
Dzingala, Walter, "Effect of elevated temperature on efficiency of corrosion inhibitors" (1961). Theses. 2953.
https://digitalcommons.njit.edu/theses/2953
