SYMPOSIA PAPER Published: 01 January 2000

Aerosol Model Aids Interpretation of Corrosivity Measurements in a Tropical Region of Australia


The corrosivity pattern near the tropical coastal city of Townsville, Australia is of interest because of concerns related to the corrosion of RAAF aircraft. The corrosivity at seven sites near Townsville was characterized over a four-year period with bimetallic specimens (CLIMAT units) and salt candles. The CLIMAT results highlight the effects of elevation above the ground and topography on local corrosivity. The increase in corrosivity due to elevation at the same site is readily explained by the increase in aerosol deposition. The flow pattern around objects that significantly obstruct wind is very complicated but one clear conclusion is that the wind flow speed and turbulence are highest near the top. Thus aerosol deposition, and therefore corrosion, rates are higher near the top of obstructions to wind such as hills and buildings. The main conclusion is that the principles of salt aerosol transport and deposition offer a physical framework for understanding and predicting patterns of aerosol deposition and consequently the patterns of corrosivity.

Author Information

Klassen, R
Royal Military College of Canada, Kingston, Ontario, Canada
Hinton, B
Aeronautical and Maritime Research Laboratory, Melbourne, Victoria, Australia
Roberge, P
Royal Military College of Canada, Kingston, Ontario, Canada
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: G01
Pages: 48–59
DOI: 10.1520/STP13553S
ISBN-EB: 978-0-8031-5446-9
ISBN-13: 978-0-8031-2873-6