Elastic Modulus Determination of Al-Cu Film Alloys Prepared by Thermal Diffusion. (11th July 2012)

• Record Type: Journal Article
• Authors: Huerta, E.; Oliva, A. I.; Avilés, F.; González-Hernández, J.; Corona, J. E.
• Other Names: Bahmanpour Hamed Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2012(2012)
• Publication Date: 2012-07-11
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2012/895131
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : Elastic moduli of 50–250 nm thick Al-50 at % Cu film alloys deposited by thermal evaporation on Kapton substrates and postformed by thermal diffusion are investigated. Formation of the Al2 Cu alloy phase was confirmed by X-ray photoelectron spectroscopy (XPS). Surface morphology was examined by atomic force microscopy (AFM) and scanning electron microscopy (SEM) before and after tensile mechanical testing. Force-strain curves of the Al-Cu alloy were obtained by subtracting the effect of the force-strain Kapton curves from the corresponding curves of the Al-Cu/Kapton system. A reduction in the elastic modulus of the Al-Cu alloys from 106.1 to 77.8 GPa with the increase of alloy thickness was obtained. Measured elastic moduli were between the reported bulk modulus for Al and Cu. Reductions in the surface roughness and increments in the grain size were measured after tensile testing of the Al-Cu alloys.