Abstract
This paper presents the reults of comprehensive testing to characterize the effect of several different surface treatments on shear and tensile bond strength between 7075-T6 aluminum and two epoxy systems: EPON 815/V40 and EPON 828/Z. A rod pull-out test was used to determine interfacial shear strength, modeled after similar tests on reinforced concrete. The tensile bond strength was characterized using a tension test fixture designed in this study. Overall, the interfacial shear strengths were higher than the tension strengths. Surface knurling gave the highest interfacial shear strength, representing a 72% increase over untreated specimens. Phosphoric acid anodization (PAA) was also quite effective in shear. In tension, the highest strength was obtained from specimens treated with the PAA process along with a silane coupling agent. These specimens showed an increase in interfacial tensile strength by a factor of 5.6.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 303-316 |
| Number of pages | 14 |
| Journal | Journal of Adhesion |
| Volume | 55 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - 1996 |
Keywords
- Adhesive bonding
- Adhesive films
- Aluminum surface treatments
- Aluminum/epoxy interface
- Interfacial shear strength
- Interfacial tensile strength
- Phosphoric acid anodization
- Silane coupling agent
ASJC Scopus subject areas
- General Chemical Engineering
- Computational Mechanics
- Mechanics of Materials
- General Materials Science