| Journal: | Superficies y vacío |
| Database: | PERIÓDICA |
| System number: | 000405033 |
| ISSN: | 1665-3521 |
| Authors: | Valencia, R1 López Callejas, R2 Muñoz, A1 Barocio, S.R1 Chávez, E1 Godoy Cabrera, O2 |
| Institutions: | 1Instituto Nacional de Investigaciones Nucleares, Laboratorio de Física de Plasmas, México, Distrito Federal. México 2Instituto Tecnológico de Toluca, Departamento de Electrónica, Toluca, Estado de México. México |
| Year: | 2004 |
| Season: | Mar |
| Volumen: | 17 |
| Number: | 1 |
| Pages: | 17-20 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | Recent results obtained from the Plasma Immersion Ion Implantation (PIII) nitriding process on AISI 304 stainless steel by means of a DC toroidal plasma source of 0.23m and 0.08m major and minor radii, respectively, are reported. Among the main plasma parameters, electron densities in the range 1-4×109 cm-3 were established at an electron temperature between 0.5 and 2 eV. Nitrogen ions were extracted from the plasma and implanted in the steel substratum by means of a high voltage negative modulator operated at 5 kV, with 50 µs long pulses and a 1 kHz rate. This technology has achieved increments in the steel Vickers microhardness between 500 and 700 units at a 15 g load, according to the gas pressure. X ray diffraction (XRD) pattern confirmed the presence of the γN phase as a result of the nitriding process. Scanning Electronic Microscopy (SEM) indicated a 20 at.% increment in the nitrogen content of the implanted samples |
| Disciplines: | Física y astronomía, Ingeniería |
| Keyword: | Física de materia condensada, Teoría cinética y plasmas, Ingeniería de materiales, Superficies, Nitruración, Acero inoxidable, Implantación de iones |
| Keyword: | Physics and astronomy, Engineering, Condensed matter physics, Kinetic theory and plasma, Materials engineering, Surfaces, Nitriding, Stainless steel, Ion implantation |
| Full text: | Texto completo (Ver PDF) |
