The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution

The electrochemical behaviour of 316 stainless steel was studied in nearly neutral electrolytes containing NaCl in the - 3 to 50°C temperature range, using potentiostatic and potentiodynamic techniques. Special attention was paid to both the current fluctuations previous to the irreversible breakdow...

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Autor principal:	Pallotta, César Daniel
Publicado:	1986
Materias:	CHROMIUM PLATING ELECTROCHEMISTRY STEEL CORROSION - Pitting PASSIVE LAYERS STAINLESS STEEL
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v31_n10_p1265_Pallotta http://hdl.handle.net/20.500.12110/paper_00134686_v31_n10_p1265_Pallotta
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00134686_v31_n10_p1265_Pallotta
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spelling	paper:paper_00134686_v31_n10_p1265_Pallotta2025-07-30T17:18:42Z The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution Pallotta, César Daniel CHROMIUM PLATING ELECTROCHEMISTRY STEEL CORROSION - Pitting PASSIVE LAYERS STAINLESS STEEL The electrochemical behaviour of 316 stainless steel was studied in nearly neutral electrolytes containing NaCl in the - 3 to 50°C temperature range, using potentiostatic and potentiodynamic techniques. Special attention was paid to both the current fluctuations previous to the irreversible breakdown of the passive film and to the breakdown potential. No pitting was observed at temperature lower than 0°C. In the 0-15°C range the breakdown potential shifts slightly in the negative direction. Between 15 and 25°C a remarkable decrease in the breakdown potential was observed whereas in the 25-50°C range it remained practically constant. The temperature dependence of the breakdown potential correlates closely with the temperature dependence of the Cr(III) to soluble Cr(VI) electrooxidation current. This suggests that the depletion of Cr(III) and surrounding water with increasing temperature decreases the capability of self-repair of the passive film. Conversely, the increase in temperature produces a thicker and more crystalline passive film which becomes more resistant to breakdown. As this effect is counterbalanced by the depletion of Cr(III) in the passive layer the breakdown potential in the 25-50°C range remains practically constant. © 1986. Fil:Pallotta, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1986 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v31_n10_p1265_Pallotta http://hdl.handle.net/20.500.12110/paper_00134686_v31_n10_p1265_Pallotta
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	CHROMIUM PLATING ELECTROCHEMISTRY STEEL CORROSION - Pitting PASSIVE LAYERS STAINLESS STEEL
spellingShingle	CHROMIUM PLATING ELECTROCHEMISTRY STEEL CORROSION - Pitting PASSIVE LAYERS STAINLESS STEEL Pallotta, César Daniel The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution
topic_facet	CHROMIUM PLATING ELECTROCHEMISTRY STEEL CORROSION - Pitting PASSIVE LAYERS STAINLESS STEEL
description	The electrochemical behaviour of 316 stainless steel was studied in nearly neutral electrolytes containing NaCl in the - 3 to 50°C temperature range, using potentiostatic and potentiodynamic techniques. Special attention was paid to both the current fluctuations previous to the irreversible breakdown of the passive film and to the breakdown potential. No pitting was observed at temperature lower than 0°C. In the 0-15°C range the breakdown potential shifts slightly in the negative direction. Between 15 and 25°C a remarkable decrease in the breakdown potential was observed whereas in the 25-50°C range it remained practically constant. The temperature dependence of the breakdown potential correlates closely with the temperature dependence of the Cr(III) to soluble Cr(VI) electrooxidation current. This suggests that the depletion of Cr(III) and surrounding water with increasing temperature decreases the capability of self-repair of the passive film. Conversely, the increase in temperature produces a thicker and more crystalline passive film which becomes more resistant to breakdown. As this effect is counterbalanced by the depletion of Cr(III) in the passive layer the breakdown potential in the 25-50°C range remains practically constant. © 1986.
author	Pallotta, César Daniel
author_facet	Pallotta, César Daniel
author_sort	Pallotta, César Daniel
title	The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution
title_short	The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution
title_full	The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution
title_fullStr	The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution
title_full_unstemmed	The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution
title_sort	influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in nacl solution
publishDate	1986
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v31_n10_p1265_Pallotta http://hdl.handle.net/20.500.12110/paper_00134686_v31_n10_p1265_Pallotta
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The influence of temperature and the role of chromium in the passive layer in relation to pitting corrosion of 316 stainless steel in NaCl solution

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