Studies on Atmospheric Ageing of Nanosized Silicon Nitride Powders

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...

Full description

Saved in:
Bibliographic Details
Published in:Key engineering materials 2004-01, Vol.264-268, p.2311-2314
Main Authors: Gubicza, Jenő, Mohai, I., Szépvölgyi, J.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.264-268.2311