Time evolution of Cr and N on AISI 304 steel surface during pulsed plasma ion nitriding
| Autor: | B.J. Gómez, J. Ferron, Jorge Feugeas, Aldo F. Craievich, G Sánchez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: |
Glow discharge
Auger electron spectroscopy Materials science Ion beam Ciencias Físicas Metallurgy Metals and Alloys Analytical chemistry chemistry.chemical_element Surfaces and Interfaces engineering.material Surfaces Coatings and Films Electronic Optical and Magnetic Materials Astronomía Chromium chemistry Conversion electron mössbauer spectroscopy Nuclear reaction analysis Materials Chemistry engineering Austenitic stainless steel Nitriding CIENCIAS NATURALES Y EXACTAS |
| Popis: | Chromium concentration on steels plays an important role in ion nitriding processes. In this work, the time variation of the concentration of the elements in the near-surface region of the AISI 304 (18% of Cr) stainless steel, during pulsed ion nitriding, was studied. The techniques used were the real time and in situ X-ray diffraction by Synchrotron radiation. Auger spectroscopy, Nuclear Reaction Analysis, and Conversion Electron Mossbauer Spectroscopy. Ion nitriding was performed with a 100 Hz square wave pulsed glow discharge, with different treatment times, in an atmosphere of 80% N and 20% H mixture, under a total 2 2 pressure of 5.6 mbar. The high Cr concentration in the near surface layers (;17 A) and the intermediate ‘S’ phase formation ˚ were explained through the nitrogen ion sputtering during the ion nitriding process. Fil: Gomez, Bernardo Jose Armando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Feugeas, Jorge Nestor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Sanchez, Guillermo. Universidad Federal de Porto Alegre; Brasil Fil: Ferron, Julio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Craievich, A.. Universidade de Sao Paulo; Brasil |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|