L.L. Sousa, J.W.J. Silva
The 59.6% Ni, 24.0% Cr and 9.8% Mo alloy, used in dental prosthesis was recast in open fire - oxy-GLP torch and naturally cooled. The electrochemical study has shown that the alloy has behavior similar to chrome, displaying an extensive passivity area due to formation of a chrome oxide layer. The development study of corrosive process was carried out by interrupting the potentiodynamic polarization curve in four different potentials and their surfaces were analyzed by optical microscopy and scanning electronic microscopy. The material micrograph, before being subjected to the electrochemical test, displayed homogeneous surface, showing some pores, probably formed during the recast procedure. The wear and tear process begins after the transpassivity potential, with intergranular corrosion characteristics with preferential dissolution of region with the smallest Mo content, as quantified by EDS. The obtained surface has appearance of a sample electrolitically attacked in HCl, displaying Mo-rich precipitates in the grains boundaries.
@article{65258963-0399-41a8-8dff-1f88177112dd,
title={Corrosion Process Development Of A Ni Cr},
author={L.L. Sousa and J.W.J. Silva},
year={2026},
language={en}
}TY - JOUR TI - Corrosion Process Development Of A Ni Cr AU - L.L. Sousa AU - J.W.J. Silva PY - 2026 LA - en ER -
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