Accession Number:

ADA409002

Title:

The Durability of Epoxy Adhesive Bonds Formed with Titanium Alloy

Descriptive Note:

Technical rept.

Corporate Author:

DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION VICTORIA (AUSTRALIA) AERONAUTICAL AND MARITIME RESEARCH LAB

Personal Author(s):

Report Date:

2002-08-01

Pagination or Media Count:

33.0

Abstract:

The durability of adhesive bonds formed between titanium alloy Ti-6A1-4V and rubber toughened epoxy structural adhesives used for repair bonding applications was examined. Two surface treatments were studied the grit-blast and silane method, currently employed for titanium repairs on F-111 at RAAF Amberley and the FA-18 SRM method which uses Pasa-Jell 107, a proprietary based toxic chemical treatment Results from wedge style durability tests indicated the grit-blast and silane pre-treatment provided notably better performance than the Pasa-Jell 107 pre-treatment for epoxy bonds formed with Ti-6A1AV alloy. Addition of BR127 primer to the pre-treated surfaces did not offer substantial improvement in durability performance. The durability of titanium-epoxy adhesive bonds for the grit-blast and silane pre-treatment on titanium was inferior to the performance observed on aluminum alloys. Further research will be required to improve the performance of the grit-blast and silane treatment on titanium to levels observed for aluminium.

Subject Categories:

  • Attack and Fighter Aircraft
  • Adhesives, Seals and Binders
  • Couplers, Fasteners and Joints

Distribution Statement:

APPROVED FOR PUBLIC RELEASE