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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A comparative study of the corrosion resistance of incoloy MA 956 and PM 2000 superalloys

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Author(s):
Terada, Maysa [1] ; Marques, Rogerio Albuquerque [1] ; Magnani, Marina [2] ; Padilha, Angelo Fernando [3] ; Costa, Isolda [1]
Total Authors: 5
Affiliation:
[1] IPEN CNEN SP, Ctr Tecnol Ciencia Mat CCTM, BR-05508900 Sao Paulo - Brazil
[2] LNLS, BR-13083970 Campinas, SP - Brazil
[3] Univ Sao Paulo, Escola Politecn, Dept Met & Mat Engn, BR-05508030 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 13, n. 4, p. 425-429, OCT-DEC 2010.
Web of Science Citations: 0
Abstract

Austenitic stainless steels, titanium and cobalt alloys are widely used as biomaterials. However, new medical devices require innovative materials with specific properties, depending on their application. The magnetic properties are among the properties of interest for some biomedical applications. However, due to the interaction of magnetic materials with Magnetic Resonance Image equipments they might used only as not fixed implants or for medical devices. The ferromagnetic superalloys, Incoloy MA 956 and PM 2000, produced by mechanical alloying, have similar chemical composition, high corrosion resistance and are used in high temperature applications. In this study, the corrosion resistance of these two ferritic superalloys was compared in a phosphate buffer solution. The electrochemical results showed that both superalloys are passive in this solution and the PM 2000 present a more protective passive film on it associated to higher impedances than the MA 956. (AU)