Shortcomings of international standard iso 9223 for the classification, determination, and estimation of atmosphere corrosivities in subtropical archipelagic conditions—The case of the Canary Islands (Spain)

Juan J. Santana; Alejandro Ramos; Alejandro Rodriguez-Gonzalez; Helena C. Vasconcelos; Vicente Mena; Bibiana M. Fernández-Pérez; Ricardo M. Souto

doi:10.3390/met9101105

Shortcomings of international standard iso 9223 for the classification, determination, and estimation of atmosphere corrosivities in subtropical archipelagic conditions—The case of the Canary Islands (Spain)

Juan J. Santana, Alejandro Ramos, Alejandro Rodriguez-Gonzalez, Helena C. Vasconcelos, Vicente Mena, Bibiana M. Fernández-Pérez, Ricardo M. Souto

CeFITec – Centro de Física e Investigação Tecnológica

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9 Citations (Scopus)

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Abstract

The classification, assessment, and estimation of the atmospheric corrosivity are fixed by the ISO 9223 standard. Its recent second edition introduced a new corrosivity category for extreme environments CX, and defined mathematical models that contain dose–response functions for normative corrosivity estimations. It is shown here that application of the ISO 9223 standard to archipelagic subtropical areas exhibits major shortcomings. Firstly, the corrosion rates of zinc and copper exceed the range employed to define the CX category. Secondly, normative corrosivity estimation would require the mathematical models to be redefined introducing the time of wetness and a new set of operation constants.

Original language	English
Article number	1105
Journal	Metals
Volume	9
Issue number	10
DOIs	https://doi.org/10.3390/met9101105
Publication status	Published - 15 Oct 2019

Keywords

Archipelagic regions
Atmospheric corrosion
Canary Islands
Corrosivity categories
ISO 9223
Predictive models

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Santana, J. J., Ramos, A., Rodriguez-Gonzalez, A., Vasconcelos, H. C., Mena, V., Fernández-Pérez, B. M., & Souto, R. M. (2019). Shortcomings of international standard iso 9223 for the classification, determination, and estimation of atmosphere corrosivities in subtropical archipelagic conditions—The case of the Canary Islands (Spain). Metals, 9(10), Article 1105. https://doi.org/10.3390/met9101105

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abstract = "The classification, assessment, and estimation of the atmospheric corrosivity are fixed by the ISO 9223 standard. Its recent second edition introduced a new corrosivity category for extreme environments CX, and defined mathematical models that contain dose–response functions for normative corrosivity estimations. It is shown here that application of the ISO 9223 standard to archipelagic subtropical areas exhibits major shortcomings. Firstly, the corrosion rates of zinc and copper exceed the range employed to define the CX category. Secondly, normative corrosivity estimation would require the mathematical models to be redefined introducing the time of wetness and a new set of operation constants.",

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Santana, JJ, Ramos, A, Rodriguez-Gonzalez, A, Vasconcelos, HC, Mena, V, Fernández-Pérez, BM & Souto, RM 2019, 'Shortcomings of international standard iso 9223 for the classification, determination, and estimation of atmosphere corrosivities in subtropical archipelagic conditions—The case of the Canary Islands (Spain)', Metals, vol. 9, no. 10, 1105. https://doi.org/10.3390/met9101105

Shortcomings of international standard iso 9223 for the classification, determination, and estimation of atmosphere corrosivities in subtropical archipelagic conditions—The case of the Canary Islands (Spain). / Santana, Juan J.; Ramos, Alejandro; Rodriguez-Gonzalez, Alejandro et al.
In: Metals, Vol. 9, No. 10, 1105, 15.10.2019.

Research output: Contribution to journal › Article › peer-review

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AU - Santana, Juan J.

AU - Ramos, Alejandro

AU - Rodriguez-Gonzalez, Alejandro

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KW - Atmospheric corrosion

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Shortcomings of international standard iso 9223 for the classification, determination, and estimation of atmosphere corrosivities in subtropical archipelagic conditions—The case of the Canary Islands (Spain)

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