Journal
PRZEMYSL CHEMICZNY
Volume 99, Issue 6, Pages 844-847Publisher
WYDAWNICTWO SIGMA-N O T SP Z O O
DOI: 10.15199/62.2020.6.2
Keywords
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Funding
- Scientific Grant Agency of Ministry of Education, Science and Sport of Slovak Republic
- Slovak Academy of Sciences grants KEGA [0492U-4/2017, 0132U-4/2019]
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Com. Ti-stabilized Cr-Ni-Mo austenitic stainless steel was passivated with HNO3 soln. and then studied for pitting corrosion in 5% FeCl3 soln. (pH 1.2) by 24-hours std. immersion test and in 0.9 M NaCl + 0.1 M HCl soln. (pH 1.1) by electrochem. impedance spectroscopy (EIS test) at 22-80 degrees C. The pits were significantly bigger at 22 degrees C than those at 50 degrees C but the distribution of pitting was markedly lower. The polarization resistance decreased with increasing the temp. The quality of the surface passive film was several times lower at 80 degrees C than at the lower temp.
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