Nonmetals Test and Evaluation: Delivery Order 0007: The Development of On-Aircraft Surface Preparations Utilizing Sol-Gel Coatings for Adhesive Bonding Aluminum Alloys

Abstract

High-performance surface preparations for adhesive bonding of metals typically require the use of strong acids or bases, volatile organic compounds (VOCs), and hexavalent chromium. Surface preparations used for on-aircraft repair of aluminum rely on hazardous materials or inconvenient processing steps, or they do not yield adequate bond performance. Grit-blast/silane (GBS)', phosphoric acid containment system (PACS)2, which is a version of phosphoric acid anodize (PAA)3, and certain acid paste etches are the high-performance surface treatments currently available for on-aircraft application. All are used in conjunction with chromated, high- VOC primers. All are time consuming for on-aircraft repair. Furthermore,, their use is becoming more difficult due to existing and proposed environmental, safety, and health regulations.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 2001
Accession Number
ADA406628

Entities

People

  • Daniel B. Mccray

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Biomedical
  • Human Systems

DTIC Thesaurus Topics

  • Adhesive Bonding
  • Adhesives
  • Air Force
  • Air Force Research Laboratories
  • Aircrafts
  • Alloys
  • Aluminum Alloys
  • Aluminum Oxides
  • Chemical Synthesis
  • Chemistry
  • Environment
  • Lasers
  • Materials
  • Materials Engineering
  • Mechanical Properties
  • Test And Evaluation
  • Volatile Organic Compounds

Readers

  • Surface Coatings Technology.
  • Systems Analysis and Design