Electrochemical Noise Analysis in Passivated Martensitic Precipitation-Hardening Stainless Steels in H2SO4 and NaCl Solutions
Precipitation-hardenable stainless steels (PHSS) are widely used in various applications in the aeronautical industry such in as landing gear supports, actuators, and fasteners, among others. This research aims to study the pitting corrosion behavior of passivated martensitic precipitation-harden...
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| Format: | Article |
| Language: | English |
| Published: |
Molecular Diversity Preservation International
2025
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| Subjects: | |
| Online Access: | http://eprints.uanl.mx/30336/1/metals-15-00837.pdf |
| _version_ | 1842097105180557312 |
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| author | Almeraya Calderón, Facundo Gaona Tiburcio, Citlalli |
| author_facet | Almeraya Calderón, Facundo Gaona Tiburcio, Citlalli |
| author_sort | Almeraya Calderón, Facundo |
| collection | Repositorio Institucional |
| description | Precipitation-hardenable stainless steels (PHSS) are widely used in various applications in
the aeronautical industry such in as landing gear supports, actuators, and fasteners, among
others. This research aims to study the pitting corrosion behavior of passivated martensitic
precipitation-hardening stainless steel, which underwent passivation for 120 min at 25 ◦C
and 50 ◦C in citric and nitric acid baths before being immersed in solutions containing 1 wt.%
sulfuric acid (H2SO4) and 5 wt.% sodium chloride (NaCl). Electrochemical characterization
was realized employing electrochemical noise (EN), while microstructural analysis employed
scanning electron microscopy (SEM). The result indicates that EN reflects localized
pitting corrosion mechanisms. Samples exposed to H2SO4 revealed activation–passivation
behavior, whereas those immersed in NaCl exhibited pseudo-passivation, indicative of an
unstable oxide film. Current densities in both solutions ranged from 10−3 to 10−5 mA/cm2,
confirming susceptibility to localized pitting corrosion in all test conditions. The susceptibility
to localized attack is associated with the generation of secondary oxides on
the surface. |
| format | Article |
| id | eprints-30336 |
| institution | UANL |
| language | English |
| publishDate | 2025 |
| publisher | Molecular Diversity Preservation International |
| record_format | eprints |
| spelling | eprints-303362025-08-25T21:05:04Z http://eprints.uanl.mx/30336/ Electrochemical Noise Analysis in Passivated Martensitic Precipitation-Hardening Stainless Steels in H2SO4 and NaCl Solutions Almeraya Calderón, Facundo Gaona Tiburcio, Citlalli Ingeniería y Tecnología TJ Ingeniería Mecánica TN Ingeniería Minera. Metalurgia TP Tecnología Química Precipitation-hardenable stainless steels (PHSS) are widely used in various applications in the aeronautical industry such in as landing gear supports, actuators, and fasteners, among others. This research aims to study the pitting corrosion behavior of passivated martensitic precipitation-hardening stainless steel, which underwent passivation for 120 min at 25 ◦C and 50 ◦C in citric and nitric acid baths before being immersed in solutions containing 1 wt.% sulfuric acid (H2SO4) and 5 wt.% sodium chloride (NaCl). Electrochemical characterization was realized employing electrochemical noise (EN), while microstructural analysis employed scanning electron microscopy (SEM). The result indicates that EN reflects localized pitting corrosion mechanisms. Samples exposed to H2SO4 revealed activation–passivation behavior, whereas those immersed in NaCl exhibited pseudo-passivation, indicative of an unstable oxide film. Current densities in both solutions ranged from 10−3 to 10−5 mA/cm2, confirming susceptibility to localized pitting corrosion in all test conditions. The susceptibility to localized attack is associated with the generation of secondary oxides on the surface. Molecular Diversity Preservation International 2025-07-26 Article PeerReviewed text en http://eprints.uanl.mx/30336/1/metals-15-00837.pdf http://eprints.uanl.mx/30336/1.haspreviewThumbnailVersion/metals-15-00837.pdf Almeraya Calderón, Facundo y Gaona Tiburcio, Citlalli (2025) Electrochemical Noise Analysis in Passivated Martensitic Precipitation-Hardening Stainless Steels in H2SO4 and NaCl Solutions. Metals, 15 (8). pp. 1-20. ISSN 2075-4701 https://doi.org/10.3390/met15080837 837 |
| spellingShingle | Ingeniería y Tecnología TJ Ingeniería Mecánica TN Ingeniería Minera. Metalurgia TP Tecnología Química Almeraya Calderón, Facundo Gaona Tiburcio, Citlalli Electrochemical Noise Analysis in Passivated Martensitic Precipitation-Hardening Stainless Steels in H2SO4 and NaCl Solutions |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Electrochemical Noise Analysis in Passivated Martensitic
Precipitation-Hardening Stainless Steels in H2SO4 and
NaCl Solutions |
| title_full | Electrochemical Noise Analysis in Passivated Martensitic
Precipitation-Hardening Stainless Steels in H2SO4 and
NaCl Solutions |
| title_fullStr | Electrochemical Noise Analysis in Passivated Martensitic
Precipitation-Hardening Stainless Steels in H2SO4 and
NaCl Solutions |
| title_full_unstemmed | Electrochemical Noise Analysis in Passivated Martensitic
Precipitation-Hardening Stainless Steels in H2SO4 and
NaCl Solutions |
| title_short | Electrochemical Noise Analysis in Passivated Martensitic
Precipitation-Hardening Stainless Steels in H2SO4 and
NaCl Solutions |
| title_sort | electrochemical noise analysis in passivated martensitic precipitation hardening stainless steels in h2so4 and nacl solutions |
| topic | Ingeniería y Tecnología TJ Ingeniería Mecánica TN Ingeniería Minera. Metalurgia TP Tecnología Química |
| url | http://eprints.uanl.mx/30336/1/metals-15-00837.pdf |
| work_keys_str_mv | AT almerayacalderonfacundo electrochemicalnoiseanalysisinpassivatedmartensiticprecipitationhardeningstainlesssteelsinh2so4andnaclsolutions AT gaonatiburciocitlalli electrochemicalnoiseanalysisinpassivatedmartensiticprecipitationhardeningstainlesssteelsinh2so4andnaclsolutions |