Plasma nitriding of AISI 2205 steel: effects of surface mechanical attrition treatment and chemical etching
| Autor: | Shashi Bhushan Arya, Rajkumar P. Singh, Atul M. Gatey, Carlos A. Figueroa, Santosh S. Hosmani |
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| Rok vydání: | 2015 |
| Předmět: |
010302 applied physics
Materials science Passivation Diffusion fungi Metallurgy technology industry and agriculture Sputter cleaning 02 engineering and technology Surfaces and Interfaces 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Isotropic etching Hardness Surfaces Coatings and Films Corrosion 0103 physical sciences Materials Chemistry 0210 nano-technology Layer (electronics) Nitriding |
| Zdroj: | Surface Engineering. 32:61-68 |
| ISSN: | 1743-2944 0267-0844 |
| DOI: | 10.1080/02670844.2015.1112937 |
| Popis: | In the present study, surface mechanical attrition treatment (SMAT) and plasma nitriding were conducted on AISI 2205 steel. SMAT was effective in enhancing the surface hardness of the steel by about 80%. The influence of SMAT on the corrosion behaviour of the steel was studied in a 3.5 wt-% NaCl solution. Due to the stable and thicker passive layer, improved corrosion resistance was observed for the SMATed steel. However, nitrogen diffusion during plasma nitriding was impeded by the improved passivation, especially for the lower duration (30 min) of chemical etching/cleaning (i.e. sputter cleaning in hydrogen plasma) of the specimen's surface. Furthermore, high chemical etching duration (120 min) resulted in improved surface hardness and nitriding kinetics. |
| Databáze: | OpenAIRE |
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