Synthesis and microstructure of Si3N4-TiN nanocomposites

Mei Yang, Mingli Lv, Hongmin Zhu

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

1 Citation (Scopus)

Abstract

Si3N4-TiN nanocomposite was prepared by in situ coating in liquid ammonia using TiCl4 and Si3N4 as starting materials. The reduction reaction of TiCl4 by sodium was performed at around - 40°C and resulted TiN nano-powders which nuclei and grew on the surface of Si3N4 particles. The composite powder was consolidated through spark plasma sintering (SPS) at 1600°C and dense compact (>98% of theoretical) with grain size of less than 500 nanometers was obtained. By compositing 20vol. % TiN to Si3N 4. the electrical resistivity of the compact was reduced to small enough value (3.6×10-3Ω·cm) for electrical discharge machining (EDM).

Original languageEnglish
Title of host publicationTMS2008 - 137th Annual Meeting and Exhibition Supplemental Proceedings
Subtitle of host publicationMaterials Processing and Properties
Pages237-242
Number of pages6
Publication statusPublished - 2008 Sep 19
Externally publishedYes
EventTMS 2008 Annual Meeting Supplemental: Materials Processing and Properties - New Orleans, LA, United States
Duration: 2008 Mar 92008 Mar 13

Publication series

NameTMS Annual Meeting
Volume3

Other

OtherTMS 2008 Annual Meeting Supplemental: Materials Processing and Properties
CountryUnited States
CityNew Orleans, LA
Period08/3/908/3/13

Keywords

  • Coating
  • Conductive
  • SiN-TiN

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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  • Cite this

    Yang, M., Lv, M., & Zhu, H. (2008). Synthesis and microstructure of Si3N4-TiN nanocomposites. In TMS2008 - 137th Annual Meeting and Exhibition Supplemental Proceedings: Materials Processing and Properties (pp. 237-242). (TMS Annual Meeting; Vol. 3).