Corrosion behaviour of boronized low carbon steel

Τσιπάς, Δ.; Noguera, H.; Rus, J.

doi:10.1016/0254-0584(87)90143-x

Cited by 16 publications

(5 citation statements)

References 14 publications

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“…-The amount of mackinawite layer always being smaller than the amount of iron lost to corrosion of mild steel (expressed in molar units) 9 and a lack of substantial mackinawite layer formation on stainless steel and other corrosionresistant alloys (Figure 2), both suggest that the iron "source" in mackinawite is the steel itself, rather than the bulk solution. -Mackinawite layers in corrosion tests have very similar structures and morphologies as the mackinawite layer seen in high-temperature sulfidation of mild steel exposed to gaseous or hydrocarbon environments, [25][26][27] where the precipitation mechanism is impossible. If the list above is accepted as sufficient evidence, it can be concluded that the corrosion of mild steel in H 2 S aqueous environments proceeds initially by a very fast, direct, heterogeneous reaction at the steel surface to form a solid adherent mackinawite layer.…”

Section: Physico-chemical Modelmentioning

confidence: 99%

A Mechanistic Model of Uniform Hydrogen Sulfide/Carbon Dioxide Corrosion of Mild Steel

Sun¹,

Nešić²

2009

CORROSION

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A mechanistic model of uniform hydrogen sulfide (H 2 S) and hydrogen sulfide/carbon dioxide (H 2 S/CO 2 ) corrosion of mild steel is presented that is able to predict the rate of corrosion with time. In the model, the corrosion rate of mild steel is primarily affected by H 2 S concentration, temperature, velocity, and the protectiveness of the mackinawite surface layer. The amount of mackinawite retained on the steel surface changes with time and depends on the layer formation rate as well as the layer damage rate. The layer formation may occur by corrosion and/or precipitation, while the layer damage can be by mechanical or chemical means. The model predictions were compared with a very broad set of experimental results and good agreement was found. The current version of the model does not yet include iron sulfide precipitation effects, nor hydrodynamic effects on film damage, which will be addressed in future work.

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Section: Physico-chemical Modelmentioning

confidence: 99%

A Mechanistic Model of Uniform Hydrogen Sulfide/Carbon Dioxide Corrosion of Mild Steel

Sun¹,

Nešić²

2009

CORROSION

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“…Both corr and pass increased by crystallization. Various kinds of borides and silicides, including FeB, Fe 2 B, CoB, CoSi, and MnSi, are reported to be resistant to corrosion or effective in reducing corrosion rate of alloys [17][18][19][20]. However the passive current density was rather increased for the crystalline alloy with borides and silicides in Figure 4.…”

Section: Methodsmentioning

confidence: 97%

Effects of Crystallization on the Corrosion and Passivity of Amorphous Pd-Fe-Co-Si-B Alloys

Jang

Lee

Kim

2017

Journal of Nanomaterials

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Corrosion behavior of Pd48.2Fe17Co16.7Si13.4B4.7 and Pd51.4Fe18Co18Si11.1B1.5 alloys was examined by potentiodynamic polarization tests in pH 8.5 buffer solution. The amorphous alloy ribbons showed passivity with the passive current densities of 2 × 10−6 A/cm2~4 × 10−6 A/cm2. The crystalline alloys showed a higher corrosion rate in pH 8.5 buffer solution with the degree of variation depending on the alloy composition. It is suggested from the Mott-Schottky analysis that the donor density was lower for the amorphous alloy than the crystalline alloy.

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“…As described in the available literature, [18][19][20] borides usually present excellent corrosion resistance to molten aluminum. As shown in Figure 1, there are many Cr-rich borides in S1, S2, and S3 alloys, and accordingly, these studied Fe-Cr-B alloys possess better corrosion resistance to molten aluminum in comparison with H13 steel.…”

Section: The Corrosion Mechanism Of Fe-cr-b Alloysmentioning

confidence: 99%

Corrosion behavior of novel Fe–Cr–B alloys containing high Cr content in molten aluminum

Yang

Chen

et al. 2022

Materials & Corrosion

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Materials applied in the aluminum processing industry commonly suffer harsh corrosion on account of the high aggressivity of molten aluminum. Fe–Cr–B alloys have shown outstanding corrosion resistance to molten aluminum due to the presence of Cr‐rich borides displaying high stability. Accordingly, three Fe–Cr–B alloys with high Cr contents (20.6, 28.7, and 36.6 wt%) were fabricated in this study. As the Cr content increased from 20.6 to 36.6 wt%, the (Cr,Fe)2B borides ultimately transformed into Cr2B borides. A corrosion test was carried out in molten aluminum at three temperatures (700°C, 750°C, and 800°C) for 4 h and the volume losses of the studied alloys were measured to estimate their corrosion resistance. The Fe–Cr–B alloy with 28.73 wt% Cr exhibited the finest corrosion resistance among the three studied Fe–Cr–B alloys on account of enhancing the corrosion resistance of the Fe matrix by solution mechanism as well as maintaining the generation of periodical layered structures in its corrosion interface. In addition, as the test temperature expanded, the volume loss of Fe–Cr–B alloys stepped up slowly, whereas that of H13 tended to increase drastically.

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Corrosion behaviour of boronized low carbon steel

Cited by 16 publications

References 14 publications

A Mechanistic Model of Uniform Hydrogen Sulfide/Carbon Dioxide Corrosion of Mild Steel

A Mechanistic Model of Uniform Hydrogen Sulfide/Carbon Dioxide Corrosion of Mild Steel

Effects of Crystallization on the Corrosion and Passivity of Amorphous Pd-Fe-Co-Si-B Alloys

Corrosion behavior of novel Fe–Cr–B alloys containing high Cr content in molten aluminum

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