Hostname: page-component-745bb68f8f-b95js Total loading time: 0 Render date: 2025-01-26T04:42:16.100Z Has data issue: false hasContentIssue false
  • English
  • Français

Processing and Magnetic Properties of Ni-Fe Alloy Dispersed Alumina Nanocomposites

Published online by Cambridge University Press:  21 March 2011

Jai-Sung Lee ,
Sung-Tag Oh  and
Seok Namkung
Jai-Sung Lee
Affiliation:
Dept of Metallurgy and Materials Science, Hanyang University, Ansan 425-791, KOREA
Sung-Tag Oh
Affiliation:
Dept of Metallurgy and Materials Science, Hanyang University, Ansan 425-791, KOREA
Seok Namkung
Affiliation:
Dept of Metallurgy and Materials Science, Hanyang University, Ansan 425-791, KOREA
Get access

Abstract

An optimum route to fabricate the Al2O3/Ni-Fe alloy nanocomposites with sound microstructure and magnetic propertieswas investigated. The composites were fabricated by the hot pressing of powder mixtures of Al2O3 and nano-sized Ni-Fe alloy, in which the alloy was prepared by solution-chemistry routes using Ni- and Fe-nitrate powders and a subsequent hydrogen reduction process. Microstructural observation of reduced powder mixture revealed that the Ni-Fe alloy particles of about 20 nm in size were homogeneously surrounded Al2O3, forming nanocomposite powder. The hot-pressed composite showed improved mechanical properties and magnetic response. The properties are discussed in terms of microstructural characteristics such as the distribution and size of Ni-Fe dispersion.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 676: Symposium Y – Synthesis, Functional Properties and Applications of Nanostructures , 2001 , Y8.40
Copyright
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Niihara, K., J. Ceram. Soc. Jpn. 99, 974 (1991).Google Scholar
2. Sekino, T. and Niihara, K., J. Mater. Sci. 32, 3943 (1997).Google Scholar
3. Oh, S.-T., Sekino, T. and Niihara, K., J. Eur. Ceram. Soc. 18, 31 (1998).Google Scholar
4. Sekino, T., Nakajima, T., Ueda, S. and Niihara, K., J. Am. Ceram. Soc. 80, 1139 (1997).Google Scholar
5. Lee, J. S., Kim, T. H., Yu, J. H. and Chung, S. W., Nanostr. Mater. 9, 153 (1997).Google Scholar
6. Budiansky, B., Amazigo, J. C. and Evans, A. G., J. Mech. Phys. Solids. 36, 167 (1988).Google Scholar
7. Cullity, B. D., Introduction to Magnetic Materials, (Addison-Wesley Publ. Co., Massachusetts, 1972), p. 525.Google Scholar
8. Qin, X. Y., Kim, J. G. and Lee, J. S., Nanostr. Mater. 11, 259 (1999).Google Scholar