Synthesis and sintering of aluminium nitride nano-particles

Zhao Han, Mei Yang, Hongmin Zhu

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

Abstract

Aluminum nitride (AlN) nano-particles were synthesized from aluminum chloride by sodium reduction in liquid ammonia. A liquid solution of sodium dissolved in ammonia was employed as a reduction-nitridation agent, which enabled direct nitridation of aluminum chloride at -45°C The synthesized particles were heat-treated at 1000°C in vacuum, and were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and BET surface area measurement. The results indicated that the products were hexagonal wurtzite AlN particles, with a specific surface area of 262 m2g-1. Spark plasma sintering (SPS) process was used to consolidate the as-prepared AlN nanoparticles, and dense AlN ceramic (>98.5%) with average grain size of 200-400 nm was obtained at 1600°C without the use of sintering additives.

Original languageEnglish
Title of host publicationNitrides and Related Bulk Materials
Pages134-139
Number of pages6
Publication statusPublished - 2008 Dec 1
Externally publishedYes
Event2007 MRS Fall Meeting - Boston, MA, United States
Duration: 2007 Nov 262007 Nov 30

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1040
ISSN (Print)0272-9172

Other

Other2007 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period07/11/2607/11/30

ASJC Scopus subject areas

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

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