INVESTIGADORES
BOERI Roberto Enrique
artículos
Título:
Corrosion Mechanisms in ADI parts
Autor/es:
SOSA, AMADEO DANIEL; ROSALES, CAREN; BOERI, ROBERTO ENRIQUE; SIMISON, SILVIA NOEMI
Revista:
INTERNATIONAL JOURNAL OF CAST METALS RESEARCH
Editorial:
Taylor and Francis
Referencias:
Lugar: London; Año: 2016 vol. 29 p. 106 - 111
ISSN:
1364-0461
Resumen:
The objective of this research is to study the influence of microstructure and grinding on the corrosion resistance of ADI in salt water. Immersion and electrochemical tests were performed on samples austempered at two different temperatures and ground. The results indicate that the dissolution rate increases as the nodule count does, and depends on the microstructure and on the surface changes introduced during grinding. A porous layer is formed on ADI corroded surface due to the selective dissolution of ferrite, and a preferential dissolution of the matrix around graphite is noticeable. Ground surfaces are less corrosion resistant than polished ones.