| Journal: | Revista mexicana de física |
| Database: | PERIÓDICA |
| System number: | 000363616 |
| ISSN: | 0035-001X |
| Authors: | Carreón, H1 González Carrasco, J.L2 |
| Institutions: | 1Universidad Michoacana de San Nicolás de Hidalgo, Instituto de Investigaciones Metalúrgicas, Morelia, Michoacán. México 2Consejo Superior de Investigaciones Científicas, Centro Nacional de Investigaciones Metalúrgicas, Madrid. España |
| Year: | 2012 |
| Season: | Oct |
| Volumen: | 58 |
| Number: | 5 |
| Pages: | 372-377 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, teórico |
| In this paper, we present a technique that can give information on surface metallic inclusions embedded in a host material, i.e. by the magnetic sensing of local thermoelectric currents produced when a temperature gradient is established in the material. These thermoelectric currents generate flux magnetic densities that are detected by a highly sensitive magnetometer. A comparison between reported analytical results with experimental data of the magnetic field produced by thermoelectric currents around surface-breaking cylindrical tin inclusions in copper under external thermal excitation for different lift-off distances between the sensor and the surface of the specimen is presented. The diameter of the inclusions varied from 4.76 to 12.7 mm at different lift-off distance magnetometer probe and the specimen 1 to 8 mm respetively. A fairly modest 1.46±C/cm temperature gradient in the specimen produced magnetic flux densities ranging from 60 to 1460 nT | |
| Disciplines: | Física y astronomía |
| Keyword: | Física, Mediciones termoeléctricas, Densidad de flujo magnético, Inclusiones cilíndricas, Magnetómetros |
| Keyword: | Physics and astronomy, Physics, Thermoelectric measurements, Magnetic flux density, Cylindrical inclusions, Magnetometers |
| Full text: | Texto completo (Ver PDF) |
