Fabrication of silicon nitride ceramics with electrical conductivity

Yoon Ho Kim, T. Sekino, H. Kawaoka, T. Kusunose, T. Nakayama, K. Niihara

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

Abstract

The electrical conductivity was provided to structural ceramics by controlling the grain boundary phase. We focused on the grain boundary phase of Si3N4 ceramics, which can be considered as an infinite network for conducting paths. In this study, we investigated the correlationship of the microstructure, mechanical properties, and electrical conductivity of Si3N4 ceramics with V2O5 based glasses. The Si3N4 ceramic with V2O5 based glasses were successfully fabricated by controlling the composition of grain boundary phase. Fabricated materials by a PECS method indicated a very fine microstructure. The mechanical properties of Si3N4 ceramics with V2O5 based glasses were not good compared to those of conventional Si3N4. However, the values for the SNVB and the SNVBA were four or six orders of magnitude higher at room temperature and had excellent mechanical properties compared to pure V 2O5 based glasses.

Original languageEnglish
Title of host publicationEco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6
PublisherTrans Tech Publications Ltd
Pages501-505
Number of pages5
ISBN (Print)0878499660, 9780878499663
DOIs
Publication statusPublished - 2005
Event6th International Symposium on Eco-Materials Processing and Design, ISEPD-6 - Jinju, Korea, Republic of
Duration: 2005 Jan 162005 Jan 18

Publication series

NameMaterials Science Forum
Volume486-487
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other6th International Symposium on Eco-Materials Processing and Design, ISEPD-6
CountryKorea, Republic of
CityJinju
Period05/1/1605/1/18

Keywords

  • Electrical conductivity
  • Glassy grain boundary phase
  • Silicon nitride

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Fabrication of silicon nitride ceramics with electrical conductivity'. Together they form a unique fingerprint.

  • Cite this

    Kim, Y. H., Sekino, T., Kawaoka, H., Kusunose, T., Nakayama, T., & Niihara, K. (2005). Fabrication of silicon nitride ceramics with electrical conductivity. In Eco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6 (pp. 501-505). (Materials Science Forum; Vol. 486-487). Trans Tech Publications Ltd. https://doi.org/10.4028/0-87849-966-0.501