Correlation of corrosion and surface analyses for Ni-Cr alloys
Abstract
In this study, the corrosion properties of six commercial Ni-Cr dental casting alloys were evaluated and correlated with alloy bulk compositions and surface chemistries. Semi-quantitative bulk elemental composition data for the alloys was acquired through energy dispersive spectroscopy and compared to the manufacturer's reported compositions. Corrosion properties, in an artificial saliva solution (ph = 4.6), were evaluated by cyclic polarization techniques. Surface compositions were evaluated by X-ray photoelectron spectroscopy. Results indicated alloys containing at least 16-22% Cr and 9-14% Mo formed a complex stable passive oxide layer, which provides resistance to accelerated corrosion processes. Alloys without these Cr and Mo levels and or Be additions, formed oxide layers that were not resistant to accelerated corrosion processes.
Publication Title
Critical Reviews in Biomedical Engineering
Recommended Citation
Roach, M., Parsell, D., Gardner, S., & Bumgardner, J. (1998). Correlation of corrosion and surface analyses for Ni-Cr alloys. Critical Reviews in Biomedical Engineering, 26 (5), 391-392. Retrieved from https://digitalcommons.memphis.edu/facpubs/12327
