Very Hard Corrosion-Resistant Roll-Bonded Cr Coating on Mild Steel in Presence of Graphite
| العنوان: | Very Hard Corrosion-Resistant Roll-Bonded Cr Coating on Mild Steel in Presence of Graphite |
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| المؤلفون: | S. Khara, Shashank Shekhar, K. Mondal, Pankaj Kumar |
| المصدر: | Journal of Materials Engineering and Performance. 26:5885-5896 |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 010302 applied physics, Argon, Materials science, Passivation, Annealing (metallurgy), Mechanical Engineering, Metallurgy, chemistry.chemical_element, 02 engineering and technology, engineering.material, 021001 nanoscience & nanotechnology, 01 natural sciences, Corrosion, Roll bonding, Diffusion layer, chemistry, Coating, Mechanics of Materials, 0103 physical sciences, engineering, General Materials Science, Graphite, Composite material, 0210 nano-technology |
| الوصف: | The present work discusses the development of very hard Cr and Cr-carbide coating by roll bonding of Cr powder on a mild steel followed by annealing at 800, 1000, 1100 and 1200 °C with and without the presence of graphite powder packing in argon environment. In addition, the effect of a roll skin pass of 5% prior to the application of coating was studied. The presence of graphite allows diffusion of both carbon and Cr in the mild steel substrate, leading to the formation of Cr-carbide on the outer surface, making the surface very hard (VHN ~ 1800). Depending on the annealing temperature and processing condition, diffusion layer thickness of Cr is found to be in the range of 10-250 μm with Cr content of 12.5-15 wt.% across the diffusion layer. Excellent stable passivity of the coated surface is observed in 0.2 N H2SO4, which is comparable to a highly passivating 304 stainless steel, and very low corrosion rate of the coating is observed as compared to the substrate mild steel. |
| تدمد: | 1544-1024 1059-9495 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::98f58330d1208beda27e11b355b10f63Test https://doi.org/10.1007/s11665-017-3050-7Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........98f58330d1208beda27e11b355b10f63 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15441024 10599495 |
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