The durability of adhesively bonded titanium: Performance of plasma-sprayed polymeric coating pretreatments
- Hampton Univ., VA (United States); and others
The role of a surface treatment of an adherend is to promote highly stable adhesive-adherend interactions; high stability is accomplished by making the chemistry of the adherend and adhesive compatible. The common surface preparations used to enhance durability include grit blasting, chromic acid or sodium hydroxide anodization, and other chemical treatments for titanium. As interest has grown in the development of environmentally benign surface treatments, other methods have been explored. In this study, plasma-sprayed polymeric materials have been evaluated as a surface coating pretreatment for adhesively bonding titanium alloy. Polyimide and polyether powders were plasm-sprayed onto grit-blasted titanium-6Al-4V. The alloy was adhesively bonded using a high performance polyimide adhesive. The coating was characterized using surface sensitive analytical measurements. The durability performance of the plasma-sprayed adherends was compared to the performance for chromic acid anodized titanium. Among the plasma-sprayed coatings, a LaRC-TPI polyimide-based coating exhibited performance comparable to that for chromic acid anodized specimens.
- OSTI ID:
- 441471
- Report Number(s):
- CONF-960214--
- Country of Publication:
- United States
- Language:
- English
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