Uni SA/Building Materials Manufacturer

Problem: Discolouration on the surface of premium aluminium cladding was occurring when the building product was installed onsite at a particular location. The client, a building materials manufacturer, was interested to know the identity and cause of this discolouration.

Solution: X-ray photoelectron spectroscopy in the AMMRF at the University of South Australia was used to collect surface-specific information from ‘good’ and ‘stained’ areas of the product. Survey spectra provided the identity and quantity of all chemical species present, and high-resolution spectra of aluminium provided information about its oxidation state. It was found that an etchant in the local environment was responsible for the removal of a protective aluminium-oxide layer, giving the stained appearance.

Related Stories

University of Adelaide/Origin Energy

Origin Energy is an energy company with a pilot production facility in South Australia set up to ...Read More

SA Water Testing

University of South Australia/SA Water

Profile 2011, p34

Problem: The performance of a reverse osmosis membrane used by SA Water was affected by an unknown ...Read More


The University of Queensland/Very Small Particle Company

2009 Profile

The Very Small Particle Company (VSPC) have developed a unique process to produce industrial-scale ...Read More