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XPS-Investigations of corroded man-made mineral fibres
|Duran, A. ; Sociedad Espanola de Ceramica y Vidrio:|
XVI. International Congress on Glass 1992. Proceedings. Vol. 7
Madrid: Industrias Graficas, 1992 (Boletin de la Sociedad Espanola de Ceramica y Vidrio 31C)
|International Congress on Glass <16, 1992, Madrid>|
| Conference Paper|
|Fraunhofer ISC ()|
| glass corrosion; glasswool fibre; mineral fibre; photoelectron spectroscopy; XPS-investigation|
The progress of glass corrosion is influenced by the state of the glass surface during corrosion. The development of different types of surface layers is reported. Since the surface layers have a thickness of 2 micrometre or less, x-ray photoelectron spectroscopy (XPS) was used to obtain further information of the corroded fibre surface. More than 20 different types of fibres, representing a wide range of insulation wools, were corroded in a physiological model fluid at a pH of 7.6 or 5, respectively, and investigated by XPS. The results of a set of 4 typical fibres are reported in detail. All fibres show a remarkable, but differing enrichment of Ca at the surface. Whereas glasswool fibres show more or less the same shape of depth profiles, rockwool fibre profiles can be classified into three groups.