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PITTING CORROSION OF A DENTAL COPPER ALLOY IN ARTIFICIAL SALIVA


UNGUREANU GINA 1 *, MARECI DANIEL 1, AELENEI DELIA 1, MÎRZA ROŞCA JULIA C. 2
(1)TECHNICAL UNIVERSITY “GH. ASACHI” IAŞI, FACULTY OF INDUSTRIAL CHEMISTRY, B-DUL D. MANGERON, NO. 71A, IAŞI 700050, ROMANIA (2)LAS PALMAS DE GRAN CANARIA UNIVERSITY, SPAIN *CORRESPONDING AUTHOR: E-MAIL: GUNGUREANU@CH.TUIAŞI.RO

Issue:

SCSCC6, Volume VI, No. 2

Section:

Volume VI - No. 2 (2005)

Abstract:

The corrosion behaviour of a copper based dental alloy (GAUDENT) in a simulated saliva environment was studied by potentiodynamic polarization and by electrochemical impedance spectroscopy (EIS). It was established that the metallurgical processing (melting in air and manually casting) influences negatively the corrosion resistance. The keeping of this alloy in solution reduces the thermodynamic tendency to corrosion but not influence appreciably the type and intensity of the corrosion. In all cases a pitting corrosion was evidenced.

Keywords:

Gaudent, cyclic polarisation, corrosion current, EIS.

Code [ID]:

CSCC6200506V02S01A0008 [0001052]

Full paper:

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