Accession Number : AD0711950

Title :   PASSIVATION OF METAL AIRCRAFT SURFACES.

Descriptive Note : Final rept. 1 Jan-30 Jun 70,

Corporate Author : AMERICAN CYANAMID CO STAMFORD CONN CENTRAL RESEARCH DIV LABS

Personal Author(s) : Rauch,Francis C. ; Luciw,Fred W.

Report Date : JUL 1970

Pagination or Media Count : 27

Abstract : An effort was directed toward the screening of a variety of appropriately modified chelating agents as corrosion resistant and adhesion promoting treatments for mild steel, stainless steel and titanium alloys. The program was essentially an extension of earlier work in which the general validity of the concept had been demonstrated for aluminum substrates. Several types of chelating agents were found to be effective in varying degrees as paint primers on E4130 annealed aircraft steel and 321 stainless steel. The formulation previously found to be the most effective for aluminum proved to be an effective treatment for the ferrous substrates as well. Some indications were obtained that it was superior to state-of-the-art phosphatizing treatments and wash primer as a paint primer for steel. Under application conditions similar to those used for aluminum and steel, titanium was found to be resistant to all of the treatments assayed. A technique involving abrasion of the titanium submerged in a de-oxygenated solution of the chelating agent was found to give a substantial increase in the paint retaining properties of the titanium. (Author)

Descriptors :   (*AIRCRAFT FINISHES, *CORROSION INHIBITION), CHELATE COMPOUNDS, ADHESION, STEEL, TITANIUM ALLOYS, ADSORPTION, ELECTROCHEMISTRY, SALT SPRAY TESTS, PAINT PRIMERS

Subject Categories : Coatings, Colorants and Finishes
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE