- Author
-
Shepherd, C. M.
|
Jones, R. L.
- Title
- Evaluation of Inhibitors in the Corrosion of AISI 304 Stainless Steel by FC-196 Aqueous Film-Forming Foam Concentrate.
- Coporate
- Naval Research Laboratory, Washington, DC
- Report
-
NRL Report 7360,
December 7, 1971,
11 p.
- Keywords
-
corrosion
|
stainless steels
|
aqueous films
|
aqueous foams
|
inhibitors
- Abstract
- An accelerated corrosion test employing rubber band-gridled coupons, the "NRL Rubber Band Test," was used to determine corrosion characteristics of 304 stainless steel in FC-196, a 3-M Company mixture of fluorine-substituted organic compounds used to generate aqueous film-forming foam (AFFF) for fire control on Navy ships. Large variations in corrosive properties among production lots of FC-196 examined could not be explained on the basis of chloride content and pH alone. Of the chemicals and commercial inhibitors tested as preventives against pitting corrosion of 304 stainless steel in FC-196, sodium nitrate was the most effective and should be considered for further testing and possible shipboard use.