TY - GEN
T1 - Effect of surface treatment on enhancing the interfacial bond between aluminum and epoxy
AU - Albers, R. G.
AU - White, S. R.
PY - 1992
Y1 - 1992
N2 - Methods for the improvement of the interfacial bonding of aluminum and epoxy are discussed and tested experimentally. Current adhesion procedures are reviewed. The use of an epoxy adhesive film as an interface coupler and a method of anodizing the aluminum in phosphoric acid to create a favorable oxide surface are discussed. Adhesion through silane coupling agents is also studied, as a strong covalent chemical bond can be developed. Experimentally, seven different surface treatments and combinations of those treatments are tested in shear. The interfacial shear strength of the bond is tested in a manner resembling a fiber pull-out test. A half-inch diameter aluminum rod with the appropriate surface treatment is embedded in a cylinder of epoxy. Results show that mechanical types of adhesion enhancement, such as knurling and phosphoric acid anodizing, have the greatest ability to increase the shear strength of the interface. A corrosion-inhibiting primer in conjunction with an adhesive film also showed significant strength improvement.
AB - Methods for the improvement of the interfacial bonding of aluminum and epoxy are discussed and tested experimentally. Current adhesion procedures are reviewed. The use of an epoxy adhesive film as an interface coupler and a method of anodizing the aluminum in phosphoric acid to create a favorable oxide surface are discussed. Adhesion through silane coupling agents is also studied, as a strong covalent chemical bond can be developed. Experimentally, seven different surface treatments and combinations of those treatments are tested in shear. The interfacial shear strength of the bond is tested in a manner resembling a fiber pull-out test. A half-inch diameter aluminum rod with the appropriate surface treatment is embedded in a cylinder of epoxy. Results show that mechanical types of adhesion enhancement, such as knurling and phosphoric acid anodizing, have the greatest ability to increase the shear strength of the interface. A corrosion-inhibiting primer in conjunction with an adhesive film also showed significant strength improvement.
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M3 - Conference contribution
AN - SCOPUS:0026989473
SN - 0877629978
T3 - Proceedings of the American Society for Composites
SP - 587
EP - 596
BT - Proceedings of the American Society for Composites
PB - Publ by Technomic Publ Co Inc
T2 - Proceedings of the 7th Technical Conference of the American Society for Composites
Y2 - 13 October 1992 through 15 October 1992
ER -