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

Autor(es)

Terada, Maysa ^[1] ; Marques, Rogerio Albuquerque ^[1] ; Magnani, Marina ^[2] ; Padilha, Angelo Fernando ^[3] ; Costa, Isolda ^[1]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 13, n. 4, p. 425-429, OCT-DEC 2010.
• Citações Web of Science: 0
• Assunto(s): Biomateriais Corrosão

Resumo

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)

• Processo FAPESP: 08/54836-4 - Correlação entre microestrutura e resistência à corrosão nas ligas ODS Eurofer para reatores de fusão nuclear
• Beneficiário: Maysa Terada
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado