Colour variations in silicon nitride Online publication date: Wed, 02-Jul-2003
by R. Westergard, G. Akdogan, N. Axen
International Journal of Materials and Product Technology (IJMPT), Vol. 16, No. 8, 2001
Abstract: Silicone nitride is a general-purpose structural ceramic material used for example in gas turbines, bearings, seals and various wear parts. After densification of silicon nitride with sintering additives, variations in the colour or nuance occasionally appear on the material. To investigate the origin of the colour variations, differently coloured hot-isostatically pressed silicone nitrides with yttria additives were analysed with respect to composition, microstructure, hardness, fracture toughness and wear resistance. The results suggest that the differences in colour originate from the degree of crystallinity of the intergranular silicate phase. The colour variations were also accompanied by differences in the mechanical properties.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Product Technology (IJMPT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com