181-Bournias-Varotsis.pdf (1.7 MB)

Selectively anodised aluminium foils as an insulating layer for embedding electronic circuitry in a metal matrix via ultrasonic additive manufacturing

Download (1.7 MB)
conference contribution
posted on 12.01.2017, 10:11 by Alkaios Bournias-Varotsis, Ross J. Friel, Russell A. Harris, Daniel Engstrom
Ultrasonic Additive Manufacturing (UAM) is a hybrid Additive Manufacturing (AM) process that involves layer-by-layer ultrasonic welding of metal foils and periodic machining to achieve the desired shape. Prior investigative research has demonstrated the potential of UAM for the embedding of electronic circuits inside a metal matrix. In this paper, a new approach for the fabrication of an insulating layer between an aluminium (Al) matrix and embedded electronic interconnections is presented. First, an Anodic Aluminium Oxide (AAO) layer is selectively grown onto the surface of Al foils prior to bonding. The pre-treated foils are then welded onto a UAM fabricated aluminium substrate. The bonding step can be repeated for the full encapsulation of the electronic interconnections or components. This ceramic AAO insulating layer provides several advantages over the alternative organic materials used in previous works.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Solid Freeform Fabrication Symposium

Citation

BOURNIAS-VAROTSIS, A. ... et al, 2016. Selectively anodised aluminium foils as an insulating layer for embedding electronic circuitry in a metal matrix via ultrasonic additive manufacturing. IN: Bourell, D.L. ...et al. (eds.) 27th Annual International Solid Freeform Fabrication (SFF) Symposium– An Additive Manufacturing Conference, Austin, Texas, Aug 8-10th, pp. 2260-2270.

Publisher

© the Authors. Published by the Laboratory for Freeform Fabrication

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

08/09/2016

Publication date

2016

Notes

This is a conference paper.

Language

en

Location

Austin, TX

Exports

Logo branding

Keywords

Exports