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New Approach Identifying Corrosion Effects besides Standardized Materials Testing

V. Hopp, A. Masoudi, A. Sax, P. Quirmbach

Journal of Ceramic Science and Technology, Vol. 6, No. 1 (2015), pp. 47-54

DOI: 10.4416/JCST2014-00039

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Abstract

The corrosion resistance of waterglass-based putties is influenced considerably by the alkali modulus. The acid resistance of such putties is currently tested according to the standard DIN EN 993 – 16 and described by means of the measured change in weight. Dynamic Mechanical Analysis (DMA), a testing procedure to define the viscoelastic behavior of plastic materials, has brought about new findings on evaluation of the influence of the alkali modulus and the kind of damage resulting from corrosion caused by acids, with regard to mechanical behavior. Both applied test methods have revealed two different effects of corrosion: weight loss on the one hand, and a decrease in the storage modulus EI, on the other hand.

Keywords

Acid-resistant putties, corrosion, Dynamic Mechanical Analysis

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