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Evaluation of Ti-6Al-4V surface treatments for use with a polyphenylquinoxaline adhesiveThree surface treatments for Ti-6Al-4V adherends were evaluated using a thermoplastic polymer monoether polyphenylquinoxaline, MEPPQ, which had been shown in previous studies to have good potential as a high temperature adhesive for aerospace applications. Initial results based on long term thermal exposure at 232 C (450 F) using the phosphate-fluoride (PF) and chromic acid anodized (CAA) treatments with MEPPQ adhesive were not encouraging. A significant improvement in strength retention and a change in failure mode (cohesive) at 232 C (450 F) was found for the SHA treated specimens compared to the PF and CAA treatments. Although an improvement in long term thermal durability was obtained with the SHA treatment of Ti-6Al-4V, an improved surface treatment with better long term durability is still required for aerospace applications.
Document ID
19880036967
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Progar, Donald J.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Journal of Adhesion Science and Technology
Volume: 1
Issue: 2, 19
ISSN: 0169-4243
Subject Category
Chemistry And Materials (General)
Accession Number
88A24194
Distribution Limits
Public
Copyright
Other

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