Materials and Corrosion

Cover image for Vol. 68 Issue 4

Online ISSN: 1521-4176

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Recently Published Articles

  1. Cr diffusion and continuous repairing behavior during high-temperature oxidation of duplex stainless steel

    L.C. An, J. Cao, T. Zhang and Y.T. Yang

    Version of Record online: 24 APR 2017 | DOI: 10.1002/maco.201609387

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    The initial oxidation behavior of duplex stainless steel was investigated at different temperatures in laboratory conditions through scanning electronic microscopy and Raman spectroscopy. Increased diffused Cr content could induce increased ferrite phase transformation into austenite and a denser Cr2O3 layer, which could lead to the continuous repairing effect of the ferrite diffusion layer.

  2. Effect of dissolved oxygen and coupled resistance on the galvanic corrosion of Cr-Ni low-alloy steel/90-10 cupronickel under simulated deep sea condition

    S. H. Xing, Y. Li, J. A. Wharton, W. J. Fan, G. Y. Liu, F. Zhang and X. D. Zhao

    Version of Record online: 24 APR 2017 | DOI: 10.1002/maco.201709473

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    The influence of dissolved oxygen content (DOC) and coupled resistance on the galvanic corrosion rate of Cr-Ni low-alloy steel (FeCrNi) coupled with 90Cu-10Ni cupronickel alloy in simulated 500 m deep sea environment was investigated by means of weight loss measurements and SEM. The results indicated that the galvanic corrosion rate increased with the increase of DOC and decreased with the resistance increased.

  3. Enhanced inhibition of steel corrosion by L-cysteine under visible-light illumination

    P. Qiu, H. F. Yang, L. J. Yang, Z. S. Chen, L. J. Lv, Y. Song and C. F. Chen

    Version of Record online: 24 APR 2017 | DOI: 10.1002/maco.201609386

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    The steel sample surface could cover with iron oxides and hydroxides upon contact with the sodium chloride solution, the thiol head of L-cysteine as an inhibitor exhibits a strong affinity to adsorb on the substrate in dark condition. Essentially, L-cysteine molecule can bond to the substrate through bridge adsorption, thiol, and amino group owing to the sample surface photovoltaic effect under visible-light illumination condition. So we can observe an enhanced inhibition performance.

  4. Corrosion behaviour of ruthenium laser surface alloyed austenitic stainless steel in sulphuric acid and sodium chloride solutions

    J. W. van der Merwe, F. Moyo and E. M. Phetla

    Version of Record online: 24 APR 2017 | DOI: 10.1002/maco.201609343

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    At 25 and 45 °C 304L stainless steel enriched with 0.18 wt% ruthenium through laser surface alloying dramatically improves the corrosion and pitting resistance in 3.5 wt% sodium chloride.

  5. Effects of milling on the corrosion behavior of Al2NbTi3V2Zr high-entropy alloy system in 10% nitric acid solution

    X. R. Tan, Q. Zhi, R. B. Yang, F. Z. Wang, J. R. Yang and Z. X. Liu

    Version of Record online: 24 APR 2017 | DOI: 10.1002/maco.201709472

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    Al2NbTi3V2Zr alloys were prepared by low-energy (LE) and high-energy (HE) ball milling and subsequent vacuum hot pressing. The corrosion behavior of the Al2NbTi3V2Zr alloy in 10 wt% HNO3 solution was investigated. Results showed that the HE bulk exhibited improved corrosion resistance than the LE bulk. Both had lower corrosion rates than Ti64.