Studies on atmospheric ageing of nanosized silicon nitride powders

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ageing of nanosized silicon nitride powder produced by the vapor phase reaction of silicon tetrachloride and ammonia has been studied in argon gas, in dry air and in air of 80% humidity, respectively, for 3 to 540 days. No remarkable changes were observed either in the bulk or the surface properties on storage in argon gas for 90 days. However, samples stored in dry air and humid air, respectively, exhibited remarkable oxidation and formation of N-H species. It was proved that nanosized silicon nitride powders should be stored and processed in oxygen-free conditions.

Original languageEnglish
Pages (from-to)2311-2314
Number of pages4
JournalKey Engineering Materials
Volume264-268
Issue numberIII
Publication statusPublished - 2004

Fingerprint

Silicon nitride
Powders
Aging of materials
Argon
Air
Gases
Ammonia
Surface properties
Atmospheric humidity
Vapors
Oxygen
Silicon
Oxidation
silicon nitride

Keywords

  • Atmospheric ageing
  • Nanosized ceramic powder
  • Silicon nitride

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

Cite this

Studies on atmospheric ageing of nanosized silicon nitride powders. / Szépvölgyi, J.; Mohai, I.; Gubicza, J.

In: Key Engineering Materials, Vol. 264-268, No. III, 2004, p. 2311-2314.

Research output: Contribution to journalArticle

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