Publication Cover
Advances in Applied Ceramics
Structural, Functional and Bioceramics
Volume 110, 2011 - Issue 1
239
Views
10
CrossRef citations to date
0
Altmetric
Original Article

Low temperature sintering of Si3N4 ceramics by spark plasma sintering technique

, &
Pages 20-24 | Received 04 Apr 2010, Accepted 01 Jun 2010, Published online: 22 Nov 2013
 

Abstract

Abstract

Low temperature sintering of α‐Si3N4 matrix ceramics was developed in the present study using 4 wt‐%MgO together with Al2O3 or AlPO4 as the sintering additives and spark plasma sintering technique. The results suggested that α‐Si3N4 ceramics could be densified at low sintering temperature by adjusting both the sintering temperature and sintering additive content. For low temperature sintered α‐Si3N4 ceramics, using MgO and Al2O3 as the sintering additives, the densification is not complete at a temperature lower than 1600°C, and the mechanical strength is <200 MPa. When MgO and AlPO4 were used as the sintering additives, the increase in AlPO4 content not only declines the sintering temperature but also promotes the mechanical property of the sintered Si3N4 ceramics. It was the AlPO4 phosphate binder that played a significant role in low temperature sintering of Si3N4 ceramics.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.