Based on polarization measurements, high Au alloys are highly corrosion-resistant and exhibit the lowest corrosion rates; intermediate Au, Ag, and Pd alloys with Cu are passive but exhibit higher corrosion rates. Twenty weight percent (w/o) In-Ag alloys exhibit active corrosion behavior at potentials only 100 m V noble to the corrosion potential.
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References
1.
Sarkar, N.K. ; Fuys, R.A., Jr.; and Stanford , J.W.: Application of Electrochemical Techniques to Characterize the Corrosion of Dental Alloys, Corrosion and Degradation of Implant Materials, ASTM STP684, 1978, pp. 277-294.
2.
Sarkar, N.K. ; Fuys, R.A., Jr.; and Stanford , J.W.: The Chloride Corrosion Behavior of Silver-base Casting Alloys, J Dent Res 58:1979, 1572-1577.
3.
Ishizaki, N. : Corrosion Resistance of Ag-Pd Alloy System in Artificial Saliva: An Electrochemical Study, J Osaka Dent Univ3:121-133,1969.
4.
Vaidyanathan, T.K. and Prasad, A.: In vitro Corrosion and Tarnish Analysis of the Ag-Pd Binary System, J Dent Res60:707-715, 1981.
5.
Sastri, S.; Vaidyanathan, K.; and Mukherjee, K.: Potentiodynamic Polarization Analysis of Silver-Palladium Alloys in Chloride Solutions, Met Trans A13A:313-317, 1982.
6.
Rickard, T.J. : An Investigation of the Corrosion Characteristics of Dental Alloys. Master's Thesis, Air Force Inst. of Tech., School of Engineering, 1971.
7.
Weins, W.N.: Personal communication, 1981.
8.
Moreland, J.P. and Rowlands, J. 0.: Technique and Instrumentation for Polarization Resistance Measurements, Br CorrJ12:72-79, 1977.
9.
AstmStandard G59-78, ASTM, Philadelphia, PA, 1978, p. 757.
10.
Geisert, R.E. ; Greene, N.D.; and Agarwal, V.S.: A Versatile Polarization Cell System, Corrosion32:407, 1976.
11.
AstmStandard G59-78, ASTM, Philadelphia, PA, 1978, p. 964.
