Factors Affecting Corrosion in Gulf of Finland Brackish Water

The Baltic Sea is a relatively shallow inland sea surrounded by the countries of North-Eastern Europe and Scandinavia. The brackish water in the Baltic Sea has low salt concentration and it is typically one-sixth of the ocean seawater. The “nominal” amount of dissolved solids, upon which formulae fo...

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Main Authors: Jari Aromaa, Olof Forsén
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:International Journal of Electrochemistry
Online Access:http://dx.doi.org/10.1155/2016/3720280
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author Jari Aromaa
Olof Forsén
author_facet Jari Aromaa
Olof Forsén
author_sort Jari Aromaa
collection DOAJ
description The Baltic Sea is a relatively shallow inland sea surrounded by the countries of North-Eastern Europe and Scandinavia. The brackish water in the Baltic Sea has low salt concentration and it is typically one-sixth of the ocean seawater. The “nominal” amount of dissolved solids, upon which formulae for artificial seawater are based, is about 34,500 ppm, of which most is sodium chloride. The major constituents are those whose concentrations are greater than 1 mg/L and are not greatly affected by biological processes. The ratio of concentrations of these ions and molecules to each other is relatively constant. Corrosion rates were determined in long-term tests in Gulf of Finland brackish water off Helsinki. The water temperature varies through the year from about 0°C in January to 15-16°C in June to August. Salinity is 4–6‰, highest at the end of summer and lowest when ice melts. pH is between 7.0 and 8.1. Weight loss tests from one- to four-year tests for steel, stainless steel, copper, aluminium, zinc, and galvanized steel are reported and compared to short term laboratory tests in artificial seawater. Tests for passivation rates and crevice corrosion for stainless steel are discussed in terms of environment variation. The effect of corrosion on strength of steel is also discussed.
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spelling doaj-art-8b53a564208e4016b90ea42dc0ce89fa2025-08-20T03:37:34ZengWileyInternational Journal of Electrochemistry2090-35292090-35372016-01-01201610.1155/2016/37202803720280Factors Affecting Corrosion in Gulf of Finland Brackish WaterJari Aromaa0Olof Forsén1Department of Materials Science and Engineering, Aalto University, P.O. Box 16200, Aalto, 00076 Espoo, FinlandDepartment of Materials Science and Engineering, Aalto University, P.O. Box 16200, Aalto, 00076 Espoo, FinlandThe Baltic Sea is a relatively shallow inland sea surrounded by the countries of North-Eastern Europe and Scandinavia. The brackish water in the Baltic Sea has low salt concentration and it is typically one-sixth of the ocean seawater. The “nominal” amount of dissolved solids, upon which formulae for artificial seawater are based, is about 34,500 ppm, of which most is sodium chloride. The major constituents are those whose concentrations are greater than 1 mg/L and are not greatly affected by biological processes. The ratio of concentrations of these ions and molecules to each other is relatively constant. Corrosion rates were determined in long-term tests in Gulf of Finland brackish water off Helsinki. The water temperature varies through the year from about 0°C in January to 15-16°C in June to August. Salinity is 4–6‰, highest at the end of summer and lowest when ice melts. pH is between 7.0 and 8.1. Weight loss tests from one- to four-year tests for steel, stainless steel, copper, aluminium, zinc, and galvanized steel are reported and compared to short term laboratory tests in artificial seawater. Tests for passivation rates and crevice corrosion for stainless steel are discussed in terms of environment variation. The effect of corrosion on strength of steel is also discussed.http://dx.doi.org/10.1155/2016/3720280
spellingShingle Jari Aromaa
Olof Forsén
Factors Affecting Corrosion in Gulf of Finland Brackish Water
International Journal of Electrochemistry
title Factors Affecting Corrosion in Gulf of Finland Brackish Water
title_full Factors Affecting Corrosion in Gulf of Finland Brackish Water
title_fullStr Factors Affecting Corrosion in Gulf of Finland Brackish Water
title_full_unstemmed Factors Affecting Corrosion in Gulf of Finland Brackish Water
title_short Factors Affecting Corrosion in Gulf of Finland Brackish Water
title_sort factors affecting corrosion in gulf of finland brackish water
url http://dx.doi.org/10.1155/2016/3720280
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