Hydrogen Absorption into Fe Plates with Rust Layers Containing Various MgCl&lt;sub&gt;2&lt;/sub&gt; Amounts during Atmospheric Corrosion with Controlled Humidity

Haruna, Takumi; Wang, Yang; Yamanishi, Jun

doi:10.2355/isijinternational.isijint-2020-502

ISIJ Int.

2021

DOI: 10.2355/isijinternational.isijint-2020-502

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Hydrogen Absorption into Fe Plates with Rust Layers Containing Various MgCl<sub>2</sub> Amounts during Atmospheric Corrosion with Controlled Humidity

Takumi Haruna

Yang Wang

Jun Yamanishi

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Cited by 2 publications

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Design, Fabrication, and Testing of Salt Spray as An Atmospheric Corrosion Test Tool Using MgCl₂ and NaCl Solutions

Hastuty,

Oktaviyanto,

Nadhor

et al. 2024

J. Kim. Sains Apl.

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The research aimed to design a salt spray chamber adhering to ASTM-B117 standards and test the chamber with determine the atmospheric corrosion rate in a salt spray chamber using steel materials (ST 37 and SS 304) in NaCl and MgCl2 solutions. Corrosion tests spanned 48 hours, with time variables of 4, 6, and 8 hours of wet and dry cycle for 48 hours total. The objective was to design salt spray chamber and test the chamber to compare the corrosion rate based on solution and material selected. Visual inspections post-corrosion included macro photos, microscopy, SEM, and EDS analyses. Weight loss in Steel ST 37, cleaned per ASTM G1 with HCl, was also assessed. Corrosion rates of Steel ST 37 varied marginally across time variables and solutions. NaCl corrosion rates at 4, 6, and 8 hours averaged 4.5232, 5.8418, and 6.7148 mmpy, respectively. For MgCl2, rates were 4.2564, 5.3436, and 6.0915 mmpy, respectively. Stainless steel exhibited higher resistance compared to Steel ST 37. In conclusion, both NaCl and MgCl2 solutions accelerate corrosion, with NaCl inducing a higher rate. Stainless steel outperforms Steel ST 37, and the chamber material displays resilience against atmospheric corrosion.

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Design, Fabrication, and Testing of Salt Spray as An Atmospheric Corrosion Test Tool Using MgCl₂ and NaCl Solutions

Hastuty,

Oktaviyanto,

Nadhor

et al. 2024

J. Kim. Sains Apl.

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show abstract

Mass Gain Rates of Various Steels during Atmospheric Corrosion under Cyclic Conditions of Dry and Controlled-humidity Air

2021

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Mass gain rates of various steels during atmospheric corrosion under cyclic conditions of dry and controlled-humidity air were investigated. Fe, SBHS500 carbon steel and SMA490AW weathering steel were selected for the test materials. A droplet of MgCl 2 solution was set on the plate steel specimen. The specimen was exposed in the humidity-controlled air for about 82.8 ks and in the dry air for 3.6 ks. After the process, an area as well as a volume of the corroded part, surface appearance and a mass of the specimen were recorded. The process was repeated over 5000 ks of an accumulated wet time. Selected values of relative humidity were 75, 43 and 33%. For the Fe specimen, the condition of RH75% induced Region(i), (ii) and (iii), where Region(i) is the period in which a corroded area was independent of time and a mass of the specimen linearly increased with time, Region(ii) is the period in which an area and a mass increased more rapidly, and Region(iii) is the period in which increments of an area and a mass relatively decrease. The conditions of RH43% induced only the Region(i) and RH33% provided Region(ii) in addition to (i). A mass gain rate in Region(i) was larger under RH75% than those under RH43 and 33%. For the condition of RH75%, any of the three specimens showed the three regions, and a mass gain rate in Region(i) was a maximum for SBHS500 steel and a minimum for Fe.

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Hydrogen Absorption into Fe Plates with Rust Layers Containing Various MgCl<sub>2</sub> Amounts during Atmospheric Corrosion with Controlled Humidity

Cited by 2 publications

References 24 publications

Design, Fabrication, and Testing of Salt Spray as An Atmospheric Corrosion Test Tool Using MgCl₂ and NaCl Solutions

Design, Fabrication, and Testing of Salt Spray as An Atmospheric Corrosion Test Tool Using MgCl₂ and NaCl Solutions

Mass Gain Rates of Various Steels during Atmospheric Corrosion under Cyclic Conditions of Dry and Controlled-humidity Air

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