CORROSION BEHAVIORS OF LOW-CARBON STEEL IN COCOA BUTTER MEDIUM

Corrosion-resistant metals and alloys towards liquid metals determine the service performances and lifetime of the devices employing liquid metals. This paper studies the static corrosion behaviors of iron, chromium, nickel, low carbon steel, and four types of stainless steels (SS410, SS430, SS304, SS316L) in liquid Sb-Sn at 500 oC, aiming to screen corrosion-resistant SS for Li||Sb-Sn liquid metal batteries (LMBs). The corrosion rates of Fe and Ni are 0.94 μm h-1 and 6.03 μm h-1 after 160 h’s measurement, respectively. Cr shows a low corrosion rate of < 0.05μm h-1, which is due to the formation of a relatively stable Cr-Sb layer that may be able to prevent the interdiffusion between the solid substrate and liquid Sb-Sn. Ni has a high corrosion rate because the formed Ni-Sb and Ni-Sn compounds are soluble in the liquid Sb-Sn. The corrosion products of both pure metals and SS can be predicted by thermodynamic and phase diagram analysis. Among the four types of SS, SS430 shows the best corrosion resistance towards liquid Sb-Sb with a corrosion rate of 0.19 μm h-1. Therefore, a liquid Sb-Sn resistant material should have a high Cr content and a low Ni content, and this principle is applicable to design metallic materials not only for LMBs but also for other devices employing liquid Sb- and Sn-containing liquid metals.

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Corrosion Behavior of Al-Si-Cr-Cu Bearing Low Carbon Steel in A Cyclic Dry/Wet Laboratory Test

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.79-82.1017 ◽

2009 ◽

Vol 79-82 ◽

pp. 1017-1020 ◽

Cited By ~ 1

Author(s):

Hui Shu Zhang ◽

Dong Ping Zhan ◽

Song Lian Bai ◽

Zhou Hua Jiang

Keyword(s):

Carbon Steel ◽

Electrochemical Impedance ◽

Low Carbon Steel ◽

Optical Microscope ◽

Low Carbon ◽

Rust Layer ◽

Electrochemical Behaviors ◽

Corrosion Rates ◽

The Matrix ◽

Corrosion Behaviors

The corrosion behaviors of Al-Si-Cr-Cu bearing low carbon steel and a reference steel Q235 were tested in a cyclic dry/wet environment containing 0.01mol/L NaHSO3 in laboratory. Rust layers were observed by optical microscope (OM), scanning electron microscopy (SEM) and XRD. The electrochemical behaviors of the steels were studied on the polarization curves and electrochemical impedance spectroscopy (EIS). The results indicate that after 120h corrosion test, the annual corrosion rates of the designed steels reduce 42 % than Q235 at least. The corrosion products are generally iron oxyhydroxides and oxides such as FeOOH, γ-FeOOH, α-FeOOH, γ-Fe2O3, Fe3O4. The α-FeOOH possesses good stabilization mainly exits and can improve the corrosion resistance. There are the enrichments of Cu, Cr, Si and Al in the rust layer close to the matrix, which make the rust layer be more compact and protected. The corrosion currents of the two designed steels are lower than that of Q235, the corrosion potentials are higher than that of Q235 after Tafel fitting. The rust layer impedances of the designed steels are higher than that of Q235.

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Corrosion behaviors of low carbon steel, SUS310 and Fe–Mn–Al alloy with hot-dipped aluminum coatings in NaCl-induced hot corrosion

Surface and Coatings Technology ◽

10.1016/s0257-8972(02)00588-1 ◽

2003 ◽

Vol 163-164 ◽

pp. 37-43 ◽

Cited By ~ 51

Author(s):

C.J Wang ◽

J.W Lee ◽

T.H Twu

Keyword(s):

Carbon Steel ◽

Hot Corrosion ◽

Low Carbon Steel ◽

Al Alloy ◽

Low Carbon ◽

Aluminum Coatings ◽

Corrosion Behaviors

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Corrosion behaviors and contact resistances of the low-carbon steel bipolar plate with a chromized coating containing carbides and nitrides

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2009.05.103 ◽

2009 ◽

Vol 34 (16) ◽

pp. 6778-6789 ◽

Cited By ~ 50

Author(s):

Ching-Yuan Bai ◽

Ming-Der Ger ◽

Min-Sheng Wu

Keyword(s):

Carbon Steel ◽

Low Carbon Steel ◽

Bipolar Plate ◽

Low Carbon ◽

Corrosion Behaviors

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Corrosion and Oxidation Resistance of Electroless Ni-P-Al2O3 Composite Coatings on Carbon Steel

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.34-35.831 ◽

2010 ◽

Vol 34-35 ◽

pp. 831-835 ◽

Cited By ~ 4

Author(s):

Wan Chang Sun ◽

Ming Feng Tan ◽

Jian Hua Lu ◽

Lei Zhang ◽

Quan Zhou

Keyword(s):

Carbon Steel ◽

Oxidation Resistance ◽

Composite Coatings ◽

Low Carbon Steel ◽

Low Carbon ◽

Electrochemical Tests ◽

Al2o3 Composite ◽

Corrosion Behaviors ◽

Al2o3 Particles ◽

Electroless Ni

Electroless Ni-P and Ni-P-Al2O3 composite coatings on low carbon steel (Q235) sheets were prepared by adopting optimum plating process. The cross-section morphology and structure as well as the phase transformation of the composite coatings were studied by scanning electron microscopy(SEM), X-ray diffraction(XRD). It was shown that the Al2O3 particles homogeneously dispersed in the entire Ni-P film matrix, and the structure of Ni-P-Al2O3 composite coatings as deposited was amorphous. The corrosion behaviors were evaluated by electrochemical tests. The experimental results indicated that the corrosion resistance of Ni-P-Al2O3 coatings was superior to Ni-P coatings due to the effect of Al2O3 particles. In addition, the oxidation resistance test, which was carried out by using oxidation weight method, showed that ternary Ni-P-Al2O3 composite coating had a better oxidation resistance than Ni-P coating.

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