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Corrosion Resistance of Ni-Cr-Mo Alloys in Fluoride Media Simulating Oral Rinse Solutions

Eduardo Norberto Codaro

2013encorrosionalloysbiomaterialsdentalengineering

Abstract

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Ni-Cr-Mo alloys have been widely adopted for dental prostheses due to their superior mechanical properties, corrosion resistance, and cost-effectiveness. This study evaluates the corrosion resistance of three specific Ni-Cr-Mo alloys, namely SC, SB, and W, in fluoride-containing environments that simulate oral rinse solutions, utilizing NaF, NaCl, and commercial mouthwashes at a controlled pH of 6.0 and temperature of 37°C. Specific metallography analyses, immersion techniques, electrochemical tests, and impedance analysis were employed to assess the performance of these alloys. Results indicate that SC, which possesses the highest nickel and lowest chromium content, does not exhibit passivation in the tested media, leading to increasing current density with potential. Conversely, alloys W and SB display successful passivation, maintaining current density levels at approximately 10^-6 A/cm² within a passive range of 600 mV. Ultimately, our findings suggest that SC underperforms in corrosive environments compared to W and SB, highlighting the importance of alloy composition in enhancing reliability and longevity in dental applications.

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Cite This Work

@article{1a976b21-dea1-45d6-b155-1c5888c3ede7,
  title={Corrosion Resistance of Ni-Cr-Mo Alloys in Fluoride Media Simulating Oral Rinse Solutions},
  author={Eduardo Norberto Codaro},
  year={2013},
  language={en}
}
TY  - JOUR
TI  - Corrosion Resistance of Ni-Cr-Mo Alloys in Fluoride Media Simulating Oral Rinse Solutions
AU  - Eduardo Norberto Codaro
PY  - 2013
LA  - en
ER  -

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