Corrosion of low-temperature nitrided molybdenum-bearing stainless steels

M. Kuczynska-Wydorska; I. Flis-Kabulska; J. Flis

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Corrosion of low-temperature nitrided molybdenum-bearing stainless steels

机译：低温氮化钼钢的腐蚀

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Austenitic stainless steels with up to 6.1 wt.% Mo were nitrided at 425 °C and examined in 0.1 M Na2SO4 without and with chlorides at pH 3.0 and 6.5. Nitrided steels exhibited an increased resistance to pitting, but at pH 3.0 they had a decreased resistance to general corrosion. After corrosion at pH 3.0 surface films contained chromium nitrides and oxides of Mo, Cr and Fe. It is proposed that the improved pitting resistance of nitrided steels is associated with the initially accelerated dissolution which leads to the accumulation of corrosion resistant CrN and of oxidised steel components.

机译：Mo含量高达6.1 wt。％的奥氏体不锈钢在425°C下进行了氮化处理，并在0.1 M Na2SO4中进行了测试，pH为3.0和6.5时不使用氯化物。渗氮钢显示出更高的耐点蚀性，但在pH 3.0时，其耐一般腐蚀性能下降。在pH 3.0腐蚀后，表面膜包含氮化铬和Mo，Cr和Fe的氧化物。提出氮化钢的改善的抗点蚀性与最初加速的溶解有关，这导致耐腐蚀的CrN和氧化的钢组分的积累。

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来源
《Corrosion science》 |2011年第5期|p.1762-1769|共8页
作者
M. Kuczynska-Wydorska; I. Flis-Kabulska; J. Flis;
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作者单位

Institute of Physical Chemistry of PAS, Kasprzaka 44/52, 01-224 Warsaw, Poland;

Institute of Physical Chemistry of PAS, Kasprzaka 44/52, 01-224 Warsaw, Poland;

Institute of Physical Chemistry of PAS, Kasprzaka 44/52, 01-224 Warsaw, Poland;

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正文语种 eng
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a. stainless steel; b. polarisation; b. xps; c. anodic films;

机译：一个。不锈钢;b。极化;b。 xps;c。阳极膜;

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Corrosion of low-temperature nitrided molybdenum-bearing stainless steels

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