Anodize Optimization and Adhesive Evaluations for Repair Applications.
Abstract
This report covers a two-task follow-on program to investigate phosphoric acid non-tank anodize process optimization and evaluation of adhesive/surface preparation combinations. Work completed in Task I included investigating non-tank anodizing process variables of voltage, time, temperature, and rinse delay. Other parameters studied included the effect of anodizing over titanium and aluminum fasteners, battery anodizing, anodizing mode, and identification of common errors occurring in non-tank anodizing. Following the anodizing variable investigation, bond verification tests were conducted to assess bondability of representative RT,250 F, and 350 F cure adhesive systems. This work served as a basis for selecting the phosphoric acid non-tank anodize process parameter/conditions for Task II. The Task I work is reported in AFML-TR-78-7. Task II was aimed at developing a data base to facilitate repair bonding. Surface preparation methods including optimized FPL etch, and two hand-clean procedures, phosphoric acid non-tank anodize (PANTA) and PasaJell 105, were evaluated. Bondability and environmental durability of current and on-coming adhesive systems from TR,250 F, and 350 F cure categories were determined. Autoclave bonds versus vacuum bag bonds were compared. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1978
- Accession Number
- ADA061758
Entities
People
- J. E. Mccarty
- M. C. Locke
- R. E. Horton
Organizations
- Boeing Commercial Airplanes