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Bonding to Bulk Metallic Glass using Aerospace-Grade Structural Adhesive

Show simple item record Roberts, Rose Kidd, Elizabeth Hilgemann, Evan W Dillingham, Giles 2021-11-01T18:34:49Z 2021-11-01T18:34:49Z 2020-05-04
dc.identifier.citation Society for the Advancement of Material and Process Engineering Conference & Exhibition, Seattle, Washington, May 4-7, 2020
dc.identifier.clearanceno CL#20-0619
dc.description.abstract Bulk metallic glasses (BMGs) are non-crystalline metals with growing applications in aerospace. Due to their amorphous nature, BMGs generally exhibit stronger mechanical properties than most crystalline alloys and are more corrosion resistant. The limited reactivity of a corrosion resistant surface may explain the difficulty in establishing robust bonds to certain adhesives, especially commonly used structural adhesives for aerospace applications. Here, an amine cured aerospace adhesive was used for bonding an iron-nickel based BMG satellite component. Various types of processes were explored to avoid adhesive failure and increase bond strength. It was found that the BMG required specific chemical derivatization of the metal surface in order to achieve cohesive failure. Surface analysis was used to determine the mechanisms of adhesion enhancement. The process was optimized to maximize bond strength. This work helps explain the difficulties in bonding BMG materials and provides strategies for design of future bonded BMG components.
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2020
dc.title Bonding to Bulk Metallic Glass using Aerospace-Grade Structural Adhesive
dc.type Preprint

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