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Título: | The effect of plasma nitriding on the synergism between wear and corrosion of SAF 2205 duplex stainless steel |
Autor(es): | Núñez de La Rosa, Yamid Enrique Mafra, Márcio Melgarejo Morales, Rigoberto Eleazar Borges, Paulo César Pintaúde, Giuseppe |
Palavras-chave: | Desgaste mecânico Corrosão e anticorrosivos Aço inoxidável Superfícies (Tecnologia) Tribologia Mechanical wear Corrosion and anti-corrosives Steel, Stainless Surfaces (Technology) Tribology |
Data do documento: | 9-Nov-2020 |
Câmpus: | Curitiba |
Citação: | NÚÑEZ DE LA ROSA, Yamid Enrique et al. The effect of plasma nitriding on the synergism between wear and corrosion of SAF 2205 duplex stainless steel, London, v. 72, n. 9, p. 1117-1122, nov. 2020. DOI: https://doi.org/10.1108/ILT-08-2019-0302. Disponível em: https://www.emerald.com/insight/content/doi/10.1108/ILT-08-2019-0302/full/html. |
Abstract: | Purpose - his study aims to assess the performance of SAF 2205 duplex stainless steel against pure wear, tribo-corrosion, corrosion and the synergism between wear and corrosion. The effect of plasma nitriding conducted at low temperature (380°C) on SAF 2205 steel was analyzed. Design/methodology/approach - Three systems were used for assessing the synergism between wear and corrosion: tribo-corrosion - wear tests conducted using the micro-scale abrasion test, performed under a slurry of alumina particles containing 3.5% NaCl; pure wear - tests conducted using the previous system but isolated in a glovebox with a 99% N2 atmosphere; and cyclic polarization under 3.5% NaCl solution. A hard nitrided layer of 3 mm thickness was characterized using X-ray diffraction, presenting expanded austenite. Findings - The wear mode after micro-scale abrasion tests changed in the absence of an oxygen atmosphere. During pure wear, a mixed mode was identified (rolling 1 grooving), with the grooving mode more intense for the untreated steel. For tribo-corrosion tests, only rolling wear was identified. For all cases, the nitrided samples presented less wear. The corrosion results indicated a higher repassivation potential for the nitrided condition. Practical implications - The synergism was more positive for the nitrided sample than for the untreated one, which can be considered for surface treatments of duplex stainless steels in practical applications. Originality/value - A detailed description of wear mechanisms showed a significant change in the presence of oxygen atmosphere, a new approach for isolating pure wear. |
URI: | http://repositorio.utfpr.edu.br/jspui/handle/1/32957 |
ISSN: | 0036-8792 |
Aparece nas coleções: | PCS - Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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effectplasmanitridingsynergism.pdf | 1,48 MB | Adobe PDF | Visualizar/Abrir |
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