Independence of EPR and PAP tests performed on resistance spot welding joints
| Autor: | Pilar De Tiedra, José Manuel Galán, Óscar Martín, José Ignacio Santos, Virginia Ahedo |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Coefficient of determination General Chemical Engineering Ensayos (Tecnología) Testing 02 engineering and technology 01 natural sciences Reactivation charge law.invention AISI 304 stainless steel law 0103 physical sciences Pitting corrosion General Materials Science Resistance spot welding Electron paramagnetic resonance Maximal information coefficient Spot welding Materials Independence (probability theory) 010302 applied physics Materiales Metallurgy General Chemistry Ingeniería mecánica Distance correlation Electrochemical potentiokinetic reactivation test 021001 nanoscience & nanotechnology On resistance Mechanical engineering Linear relationship Pitting potential 0210 nano-technology Potentiodynamic anodic polarisation test |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Repositorio Institucional de la Universidad de Burgos (RIUBU) |
| Popis: | In the present paper, the possible relationships among the variables of the potentiodynamic anodic polarisation (PAP) test and the electrochemical potentiokinetic reactivation (EPR) test, both performed on resistance spot welding joints of AISI 304 stainless steel, are investigated. Results show that PAP variables are statistically independent from those of EPR, which implies independence between the pitting corrosion behaviour and the degree of sensitisation of the material. Parameters from PAP test are dependent among them, but this association is found noisy since the current density along the passive zone is not exactly constant. The parameters from the EPR test are confirmed as very related, presenting a linear relationship and a high coefficient of determination. The authors acknowledge support from the Spanish Ministerio de Ciencia e Innovación (MICINN) Project CSD2010-00034 (SimulPast CONSOLIDER-INGENIO 2010). |
| Databáze: | OpenAIRE |
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