Paper Titles
Ternary Polypropylene/Polyolefin Elastomer/Attapulgite Composites
p.477
Morphologies of Silver Films Fabricated by Thermal Decomposition of Silver Behenate
p.481
Simulation of Liquid/Solid Interfacial Structures in Metal/Ceramics Wetting Systems
p.485
Study on Base Body of Vegetable Concrete
p.489
Semi-Electrical Conductivity of Gelcast Alumina Sintered under Nitrogen Atmosphere
p.493
Surface Modification-Based Fabrication of Double Surface Highly Reflective and Conductive Metallized Polymeric Films and Microstructural Tuning Nanocomposite Layers
p.497
Preparation and Microwave Absorbing Property of Microwave Absorbers with FSS Embedded in Multilayer Composites
p.501
Electrochemical Corrosion Behavior of Carbon Fiber/Vinyl Ester Resin Composite Used for Sucker Rods
p.505
Introduction of Li+ Ions into Anodic Film by Hydrotalcite Precursor and Electrochemical Behavior
p.509

Semi-Electrical Conductivity of Gelcast Alumina Sintered under Nitrogen Atmosphere

Article Preview

Abstract:

This work demonstrated an in-situ pyrolysis of gelcast alumina under reduction sintering to make alumina and carbon composite in providing semi-electrical conductivity. To increase the carbon content, the monomer was varied in the premix solution with reduction sintering in nitrogen gas. Two-probe method was used to measure electrical resistance of the sintered samples. The results revealed that the increase of monomer addition and sintering treatment were effective in reducing electrical resistance. The lowest value was 3.6×106-cm, which is a potential candidate for electrostatic shielding application. The reduction-sintered sample was re-sintered in an air in order to gain insight on the conductive path due to carbon network. Further tests such as XRD, TGA/DTA, and scanning electron microscopywere used to explain the semi-conductive property of the material.

You might also be interested in these eBooks
AICAM 2005 View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 11-12)

Pages:

493-496

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.11-12.493

Citation:

Cite this paper

Online since:

February 2006

Authors:

Ruben L. Menchavez, Koichiro Adachi, Masayoshi Fuji, Minoru Takahashi

Keywords:

Aluminum (Al), Electrical Resistance, Gelcasting, Reduction Sintering

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2006 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] S. Ghosal, A. Emami-Naeini, Y.P. Ham, B.S. Draskovich and J.P. Pollinger: J. Am. Ceram. Soc. Vol. 3 (1994), p.1352.

Google Scholar

[2] M. Takahashi, K. Adachi, R. Menchavez and M. Fuji: J. Mater. Sci. (2005), accepted.

Google Scholar

[3] J. Cordelair and P. Greil: J. Eur. Ceram. Soc. Vol. 20 (2000), p. (1947).

Google Scholar

[4] M. Monthioux and O. Delverdier: J. Eur. Ceram. Soc. Vol. 16 (1996), p.721.

Google Scholar

[5] H.K. Chen, C. Lin and C. Lee: J. Am. Ceram. Soc. Vol. 77 (1994), p.1753.

Google Scholar

[6] H.K. Chen and C.I. Lin: J. Mat. Sci. Vol. 29 (1994), p.1352.

Google Scholar

[7] Y. Yourdshahyan, C. Ruberto, M. Halvarsson, L. Bengtsson, V. Langer, B.I. Lundqvist, S. Ruppi and U. Rolander: J. Am. Ceram. Soc. Vol. 82 (1999), p.1365.

DOI: 10.1111/j.1151-2916.1999.tb01926.x

Google Scholar

[8] P.S. Santos, H.S. Santos and S.P. Toledo: Mat. Res. Vol. 3 (1994), p.1352. a) b) Fig. 3. Microstructures of samples S1 sintered at 1550°C for 2 hours. a) sintered directly in nitrogen b) re-sintered in an air.

Google Scholar