Accession Number : ADD008280

Title :   Process and Composition of Low Toxicity for Preparing Aluminum Surfaces for Adhesive Bonding.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Russel,William J ; Garnis,Elizabeth A

Report Date : 15 Jul 1980

Pagination or Media Count : 6

Abstract : The invention provides a process and composition of low toxicity for preparing aluminum surfaces for adhesive bonding. The process involves treating the aluminum with an etching composition composed of sulfuric acid, ferric sulfate, and water. The invention eliminates the toxicity and pollution problems associated with the conventional chromate-type etching baths, reduces the contamination of the work place and environment to acceptable levels, and produces aluminum surfaces, which when adhesively bonded yield joints comparable in strength to those obtained by use of the conventional chromate-type etchant bath. (Author)

Descriptors :   *Patents, *Aluminum, *Surface finishing, *Adhesive bonding, Bonded joints, Etching, Chemical composition, Sulfuric acid, Iron compounds, Sulfates, Water, Toxicity

Subject Categories : Physical Chemistry
      Properties of Metals and Alloys
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE