Self-propagating high-temperature synthesis method for synthesis of AlN powder

Shyan Lung Chung, Wen Liang Yu, Chun Nan Lin

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

A new self-propagating high-temperature synthesis (SHS) process has been developed for synthesis of AlN powder under low nitrogen pressures. Al and NH4X (X = F, Cl, Br, or I) powders were mixed and pressed into a compact, which was placed in a reaction chamber filled with nitrogen. The combustion synthesis reaction was ignited by heating directly the compact, and high product yields (approx. 90%) were obtained under nitrogen pressures of around 0.5 MPa. The product yield was affected by the reactant composition, the nitrogen pressure, and the compact-forming pressure. The powder as synthesized consists mainly of fibers, coarse granules, and agglomerated fine particles, which become mostly smaller than 10 μm after grinding. A reaction process was also proposed that explains the effects of the experimental parameters on the product yield.

Original languageEnglish
Pages (from-to)1928-1933
Number of pages6
JournalJournal of Materials Research
Volume14
Issue number5
DOIs
Publication statusPublished - 1999 May

All Science Journal Classification (ASJC) codes

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

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