Nitriding using cathodic cage technique of austenitic stainless steel AISI 316 with addition of CH4
| Autor: | K.J.B. Ribeiro, Júlio César Pereira Barbosa, R.R.M. de Sousa, J.A.P. da Costa, F.O. de Araújo, Clodomiro Alves |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Precipitation (chemistry) Scanning electron microscope Mechanical Engineering Metallurgy chemistry.chemical_element engineering.material Condensed Matter Physics Indentation hardness Carburizing Chromium chemistry Mechanics of Materials engineering General Materials Science Austenitic stainless steel Layer (electronics) Nitriding |
| Zdroj: | Materials Science and Engineering: A. 487:124-127 |
| ISSN: | 0921-5093 |
| Popis: | Samples of austenitic stainless steel AISI 316 were nitrided using the cathodic cage technique with the addition of methane in the nitriding atmosphere. The aim was to study the influence of this technique in reducing the precipitation of chromium nitrite and in improving the wear resistance. The results show that there was a significant improvement in such properties when compared to the results of ionic plasma nitriding. Formation of a double layer, one more internal composed of carbon and another with high nitrogen content, was confirmed by Scanning Electron Microscopy (SEM). The microhardness profile of the layer showed an increase in hardness values and a larger uniformity, while X-ray analysis showed less chromium nitriding precipitation when compared with results obtained for samples treated using ionic plasma nitriding. |
| Databáze: | OpenAIRE |
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