Naturwissenschaften und Technologie in der Kunst; Akademie der bildenden Künste Wien; Schillerplatz 3; 1010 Wien
Research > Projects > Degradation and Stability of Materials > Corrosion of Metals > Long-term corrosion Print

Surface Sensitive Analytical Methods for the In-Situ Investigation of the
Metal - Atmosphere Interface

Hohe Warte

In the framework of the Working Group on Effects on Materials Including Historic and Cultural Monuments of the Economic Commission for Europe within the United Nations (UN/ECE) the effects of various air pollutants (such as SO2, NOx and O3) as well as climatic parameters (temperature, relative humidity, amount of precipitation) on the atmospheric corrosion (weathering) of various materials is studied. Since 2008 the Institute of Science and Technology in Art provides an exposure site in cooperation with the Central Institute for Meteorology and Geodynamics (ZAMG, Hohe Warte 36, 1190 Vienna, Austria). Samples of zinc, steel, aluminium, copper, sand stone as well as modern glass provided by international partners in the UN/ECE project are exposed on a wooden rack (see figure) for exposure times of 1-7 years.

Environmental and climatic data are measured and provided by the ZAMG. The aim of this project, which exists since the mid 1980s, is the development of so-called dosis-response functions expressing the mathematical relation between the amount of corrosion of the materials and the environmental conditions on site. These functions can then be used to predict the damage by air pollution to objects of our cultural heritage and for the assessment of threshold levels for the pollutants in order keep the atmospheric corrosion at an “acceptable” level.