AFM and KPFM investigation of high strength aluminium brazing sheets

Publikationen: KonferenzbeitragPosterForschung

Externe Organisationseinheiten

  • AMAG Austria Metall AG

Abstract

High strength aluminum brazing compounds used in car-cooler systems become susceptible to corrosion after brazing. An intermediate layer has to be inserted to separate the 4xxx filler-material from the 7xxx base-material. The effectivity of this layer in preventing corrosion was investigated using atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM). Samples were subjected to a simulated brazing cycle and exposed to a corrosive medium. The investigations revealed the presence of cathodic inclusions in the Al-matrix. Further, a line of up to 3 µm wide holes is formed at the transition between intermediate layer and base material.

Details

OriginalspracheEnglisch
StatusVeröffentlicht - 2015
VeranstaltungÖPG Jahrestagung 2015 - Technische Universität Wien, Vienna, Österreich
Dauer: 1 Sep 20154 Sep 2015

Konferenz

KonferenzÖPG Jahrestagung 2015
LandÖsterreich
OrtVienna
Zeitraum1/09/154/09/15