Performed investigations by cyclic thermometry in a solution containing 1 per cent H2SO4 by weight admixed with chloride ions in 0.2 per cent quantity by weight at 553K have shown that 654SMO steel is not susceptible to pitting, while 316L steel is intensively attacked in investigation conditions. On cyclic thermograms for 316L steel three temperature zones can be distinguished. The first zone is the zone of resistance to pitting. In the third temperature zone rapid development of pits is observed. The second intermediate temperature range includes the process of initiation and formation of pits. The temperature of pitting corrosion of 316L steel depends linearly on the applied polarisation. The temperature determined by extrapolation for a polarisation equal to zero is the measure of resistance to pitting corrosion. The pitting corrosion temperature determined in this way is related to stationary conditions, with no polarisation.
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Technical Paper|
February 01 2000
The temperature dependencies of susceptibility of 654SMO and 316L stainless steels to pitting Available to Purchase
K. Darowicki;
K. Darowicki
K. Darowicki is Head of Department at the Technical University of Gdan´sk, Anticorrosion Technology Department, Gdan´sk, Poland.
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S. Krakowiak
S. Krakowiak
S. Krakowiak is at the Technical University of Gdan´sk, Anticorrosion Technology Department, Gdan´sk, Poland.
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Publisher: Emerald Publishing
Online ISSN: 1758-4221
Print ISSN: 0003-5599
© MCB UP Limited
2000
Anti-Corrosion Methods and Materials (2000) 47 (1): 15–19.
Citation
Darowicki K, Krakowiak S (2000), "The temperature dependencies of susceptibility of 654SMO and 316L stainless steels to pitting". Anti-Corrosion Methods and Materials, Vol. 47 No. 1 pp. 15–19, doi: https://doi.org/10.1108/00035590010309960
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