Hostname: page-component-7479d7b7d-jwnkl Total loading time: 0 Render date: 2024-07-11T13:30:33.928Z Has data issue: false hasContentIssue false
  • English
  • Français

The Effect of Carbon Black Additions on Electromagnetic Wave Absorption of Fe73Si16B7Nb3Cu1 Base P/M Sheets

Published online by Cambridge University Press:  15 March 2011

Sun-I Kim ,
K. Y. Sohn  and
W. W. Park
Sun-I Kim
Affiliation:
School of Nano Engineering, Inje University, 607 Obang-dong, Gimhae, Gyeongnam 621-749, Republic of Korea
K. Y. Sohn
Affiliation:
School of Nano Engineering, Inje University, 607 Obang-dong, Gimhae, Gyeongnam 621-749, Republic of Korea
W. W. Park
Affiliation:
School of Nano Engineering, Inje University, 607 Obang-dong, Gimhae, Gyeongnam 621-749, Republic of Korea
Get access

Abstract

Melt-spun Fe73-Si16-B7-Nb3-Cu1 (at%) amorphous strip was pulverized and then crystallized to obtain nano-grain structure at 540° for 1h under a nitrogen atmosphere. Carbon black of 0.1∼ 1wt% and its dispersant were mixed with the nano-grain structured Fe-based powder for 1h via ball milling for 1h. The mixture was tape-cast with a polymer-based organic binder, and dried at 100° to make a thin sheet. The microstructure and electromagnetic wave absorption properties of the sheet were investigated using a network analyzer. As a result, the properties of electromagnetic wave absorption were improved by the increase of dielectric loss, which was mainly caused by the increase of complex permittivity with the addition of carbon black.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1118: Symposium K – Magnetic Nanostructures by Design , 2008 , 1118-K07-11
Copyright
Copyright © Materials Research Society 2009

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. Jarupat, S., Kawabata, A., Tokura, H., Borkiewicz, A., J Physiol Anthropol 22 (1), 61 (2003).Google Scholar
2. Taflove, A. Brodwin, M. E., IEEE Trans. Microwave Theory Tech. 23 (11), 888 (1975).Google Scholar
3. Snoek, J. L., Physica, 14, 207 (1948).Google Scholar
4. Yoshizawa, Y., Oguma, S., Yamauchi, K., J. appl. Phys 64, 10 (1988).Google Scholar
5. Akihisa, H., Koji, N., Shinji, J., Katsuya, Y., Takuma, Y., Kazuaki, I., “Development of electromagnetic Wave Absorbent”, SEI Technical review 54, 20–24 (2002).Google Scholar
6. Woo, S. H., Cho, H. J., Cho, E. K., Kim, M.S., Sohn, K.Y., Park, W.W., Met. Mater. -Int. 14(4), 511 (2008).Google Scholar
7. Kim, M. R., Cho, H. J., Park, W.W., Journal of Korean power metallurgy Institute, 15 (1), 53 (2008)Google Scholar
8. Jung, J. C., Jang, Y. G., Yoon, H. G, The Korean Society of Industrial Application 5, 27 (2006).Google Scholar
9. Cho, E. K., Kwon, H.T., Cho, E.M., Song, Y.S., Sohn, K.Y., Park, W.W.: Mater. Sci. & Eng. A 449, 368 (2007).Google Scholar
10. Parkansky, N., Alterkop, B., Boxman, R. L., Leitus, G., Berkh, O., Barkay, Z., Rosenberg, Yu., Eliaz, N., Carbon 46, 215 (2008).Google Scholar