Share This Article:

Study of Corrosion Resistance of Laser Welded Au-Pd-Ag-In Alloy Using Electrochemical Techniques

Abstract Full-Text HTML Download Download as PDF (Size:614KB) PP. 711-715
DOI: 10.4236/msa.2011.27098    4,964 Downloads   8,148 Views  


The aim of this work was to evaluate the corrosion resistance of AuPdAgIn alloy, submitted to laser beam welding, in 0.9% NaCl solution, using electrochemical techniques. Measures of the open circuit potential (OCP) versus time were applied to electrochemical experiments, as well as potentiodynamic direct scanning (PDS) and electrochemical impedance spectroscopy (EIS) on AuPdAgIn alloy, submitted to laser beam welding in 0.9% NaCl solution. Some differences observed in the microstructure can explain the results obtained for corrosion potential, Ecorr, and corrosion resistance, Rp. EIS spectra have been characterized by distorted capacitive components, presenting linear impedance at low frequencies, including a non-uniform diffusion. The area of the laser weld presented corrosion potential slightly superior when compared to the one of the base metal. The impedance results suggest the best resistant corrosion behavior for laser weld than base metal region. This welding process is a promising alternative to dental prostheses casting.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

M. Santos, H. Acciari, C. Riccardi and A. Guastaldi, "Study of Corrosion Resistance of Laser Welded Au-Pd-Ag-In Alloy Using Electrochemical Techniques," Materials Sciences and Applications, Vol. 2 No. 7, 2011, pp. 711-715. doi: 10.4236/msa.2011.27098.


[1] D. A. Givan, “Precious Metals in Dentistry,” Dental Clinics North America, Vol. 51, No. 3, 2007. pp. 591-601. doi:10.1016/j.cden.2007.03.005
[2] W. J. O`Brien, “Dental Materials and their Selection,” Quintessence Publishing Co. Inc., Hanover Park, 2002.
[3] R. A. Flinn and P. K. Trojan, “Engineering Materials and their Applications,” Houghton Mifflin Company, Boston, 1990.
[4] R. Zupanic, A. Legat and N. Funduk, “Tensile Strength and Corrosion resistance of Brazed and Laser-Welded Cobalt-Chromium Alloy Joints,” Journal of Prosthetic Dentistry, Vol. 96, No. 4, 2006, pp. 273-282. doi:10.1016/j.prosdent.2006.08.006
[5] H. Wulfes, “Precision Milling and Partial Denture Constructions,” Academia Dental, Lakewood, 2003.
[6] M. L. Santos, H. A. Acciari, L. C. O. Vercik and A. C. Guastaldi, “Laser Weld: Microstruture and Corrosion Study of Ag-Pd-Au-Cu alloy of Dental Application,” Materials Letters, Vol. 57, No. 13-14, 2003, pp. 1888-1893. doi:10.1016/S0167-577X(02)01095-9
[7] R. G. Kelly, D. W. Shoesmith and R. G. Buchheit, “Electrochemical Techniques in Corrosion Science and Engineering,” Marcel Dekker, New York, 2003.
[8] F. Mansfeld, H. Shih, H. Greene and C. H. Tsai, “Analysis of EIS Data Common Corrosion Processes,” In: J. R. Scully, D. C. Silverman and M. W. Kending, Ed., Electrochemical Impedance: Analysis and Interpretation, American Society for Testing and Materials, Philadelphia, 1993. doi:10.1520/STP18062S
[9] A. Legat and V. Dolecek, “Chaotic Analysis of ElectroChemical Noise Measured on Stainless Steel,” Journal of the Electrochemical Society, Vol. 142, No. 6, 1995, pp. 1851-1858. doi:10.1149/1.2044205
[10] A. Legat, “Influence of Electrolyte Movement on Measured Electrochemical Noise,” Corrosion, Vol. 56, No. 11, 2000, pp. 1086-1092. doi:10.5006/1.3294393
[11] D. Sun, P. Monaghan, W. A. Brantley and W. M. Johnston, “Electrochemical Impedance Spectroscopy Study of High-Palladium Dental Alloys. Part I. Behavior at Open Circuit Potential,” Journal of Materials Science: Materials in Medicine, Vol. 13, No. 5, 2002, pp. 435-442. doi:10.1023/A:1014719513624
[12] R. W. Phillips, “Materiais Dentários,” Guanabara Koogan, Rio de Janeiro, 1993.
[13] P. C. R. D. Souza, J. C. Dinato, C. R. S. Beatrice, A. C. Guastaldi and M. A. Bottino, “Soldagem na Odontologia: Estudo de Uni?es Soldadas Empregando-se Laser e Brasagem,” Revista da Associa??o Paulista de Cirurgi?es Dentistas, Vol. 54, No. 5, 2000, pp. 470-475.
[14] T. P. Hoar and D. C. Mears, “Corrosion-Resistant Alloys in Chloride Solutions: Materials for Surgical Implants,” Proceedings Royal Society London Series, Vol. 294, No. 18, 1966, pp. 486-511. doi:10.1098/rspa.1966.0220
[15] D. L. Johnson, V. W. Rinne and L. L. Bleich, “Polarization-Corrosion Behavior of Commercial Gold and Silver-Base Casting Alloys in Fusayama Solution,” Journal of Dental Research, Vol. 62, No. 12, 1983, pp. 1221-1225. doi:10.1098/rspa.1966.0220
[16] N. K. Sarkar, R. A. Fuys and J. W. Stanford, “The Chloride Corrosion Behavior of Silver-Base Casting Alloys,” Journal of Dental Research, Vol. 58, No. 6, 1979, pp. 1572-1577. doi:10.1177/00220345790580060501
[17] J. Brugirard, R. Bargain, J. C. Dupuy, H. Mazille and G. Monnier, “Study of the Electrochemical Behavior of Gold Dental Alloys,” Journal of Dental Research, Vol. 52, No. 4, 1973, pp. 828-836. doi:10.1177/00220345730520043001
[18] J. M. Meyer and L. Reclaru, “Electrochemical Determination of the Corrosion-Resistance of Noble Dental Casting Alloys,” Journal of Materials Science: Materials in Medicine, Vol. 6, No. 9, September 1995, pp. 534-540. doi:10.1007/BF00151035
[19] G. A. Zarb and J. M. Symington, “Osseointegrated Dental Implants: Preliminary Report on a Replication Study,” Journal of Prosthetic Dentistry, Vol. 50, No. 2, August 1983, pp. 271-276. doi:10.1016/0022-3913(83)90029-X
[20] M. L. Santos, “Estudo de Corros?o de Juntas Soldadas a Laser e Brasagem Utilizando-se Ligas Metálicas Odonto-lógicas Empregadas em Próteses Sobre Implantes,” MSc dissertation, Instituto de Química de Araraquara, Universidade Estadual Paulista, Araraquara, 2002.
[21] H. A. Acciari, A. C. Guastaldi and C. M. A. Brett, “Corrosion of the Component Phases Presents in High Copper Dental Amalgams. Application of Electrochemical Impedance Spectroscopy and Electrochemical Noise Analysis,” Corrosion Science, Vol. 47, No. 3, March 2005, pp. 635-647. doi:10.1016/j.corsci.2004.07.004

comments powered by Disqus

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.