کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1602396 | 1515906 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pitting corrosion and crevice corrosion behaviors of high nitrogen austenitic stainless steels
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Pitting corrosion and crevice corrosion behaviors of high nitrogen austenitic stainless steels Pitting corrosion and crevice corrosion behaviors of high nitrogen austenitic stainless steels](/preview/png/1602396.png)
چکیده انگلیسی
Pitting corrosion and crevice corrosion behaviors of high nitrogen austenitic stainless steels (HNSS) were investigated by electrochemical and immersion testing methods in chloride solution, respectively. The chemical constitution and composition in the depth of passive films formed on HNSS were analyzed by X-ray photoelectron spectrum (XPS). HNSS has excellent pitting and crevice corrosion resistance compared to 316L stainless steel. With increasing the nitrogen content in steels, pitting potentials and critical pitting temperature (CPT) increase, and the maximum, average pit depths and average weight loss decrease. The CPT of HNSS is correlated with the alloying element content through the measure of alloying for resistance to corrosion (MARC). The MARC can be expressed as an equation of CPT=2.55MARC-29. XPS results show that HNSS exhibiting excellent corrosion resistance is attributed to the enrichment of nitrogen on the surface of passive films, which forms ammonium ions increasing the local pH value and facilitating repassivation, and the synergistic effects of molybdenum and nitrogen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Minerals, Metallurgy and Materials - Volume 16, Issue 5, October 2009, Pages 517-524
Journal: International Journal of Minerals, Metallurgy and Materials - Volume 16, Issue 5, October 2009, Pages 517-524
نویسندگان
Hua-bing Li, Zhou-hua Jiang, Yan Yang, Yang Cao, Zu-rui Zhang,