Corrosion behavior of Al-Al3Ni and Al-Al2Cu functionally graded materials fabricated by a centrifugal method

Kazuhiko Noda, Keita Miyahara, Yoshimi Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Intermetallic compounds, such as Al3Ni and Al2Cu, are effective for enhancing the mechanical properties of an alloy. Al-Al 3Ni and Al-Al2Cu functionally graded materials (FGMs) might be attractive materials for advanced materials. Al-Al3Ni and Al-Al2Cu FGMs were fabricated by a centrifugal method; the centrifugal method is an extremely effective method for fabricating FGMs. Al-Al3Ni and Al-Al2Cu FGMs that had a graded distribution of intermetallic compounds could be produced by this in-situ centrifugal method. Particle size, particle shape and the distribution of intermetallic compounds were controlled by varying the content of the alloy element (Ni, Cu) in the master alloy, the cooling rate in casting and the gravity number. The casting mechanism is explained in terms of the microstructures of the Al-Al 3Ni and Al-Al2Cu FGMs fabricated by this method. The corrosion behavior of the FGMs was investigated by electrochemical analysis. Polarization curves of the FGMs in a borate solution were measured by a potentiodynamic method. The presence of Al2Cu exerted a larger effect on the corrosion behavior of the FGMs than Al3Ni. Analysis of the polarization curve parameters was effective for evaluating the corrosion resistance of the FGMs.

Original languageEnglish
Title of host publicationMultiscale and Functionally Graded Materials - Proceedings of the International Conference, FGM IX
Pages574-578
Number of pages5
DOIs
Publication statusPublished - 2008 Mar 13
Event9th International Conference on Multiscale and Functionally Graded Materials, FGM IX - Oahu Island, HI, United States
Duration: 2006 Oct 152006 Oct 18

Publication series

NameAIP Conference Proceedings
Volume973
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference9th International Conference on Multiscale and Functionally Graded Materials, FGM IX
CountryUnited States
CityOahu Island, HI
Period06/10/1506/10/18

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Keywords

  • Centrifugal force method
  • Corrosion
  • FGMs
  • Intermetallic compounds

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Noda, K., Miyahara, K., & Watanabe, Y. (2008). Corrosion behavior of Al-Al3Ni and Al-Al2Cu functionally graded materials fabricated by a centrifugal method. In Multiscale and Functionally Graded Materials - Proceedings of the International Conference, FGM IX (pp. 574-578). (AIP Conference Proceedings; Vol. 973). https://doi.org/10.1063/1.2896842