AFM and KPFM investigation of high strength aluminium brazing sheets
Research output: Contribution to conference › Poster › Research
Authors
Organisational units
External Organisational units
- 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
Original language | English |
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Publication status | Published - 2015 |
Event | ÖPG Jahrestagung 2015 - Technische Universität Wien, Vienna, Austria Duration: 1 Sept 2015 → 4 Sept 2015 |
Conference
Conference | ÖPG Jahrestagung 2015 |
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Country/Territory | Austria |
City | Vienna |
Period | 1/09/15 → 4/09/15 |