Skip to main content

The Effects of BN Addition on the Mechanical Properties of Porous Si3N4/BN Ceramics Prepared Via Nitridation of Silicon Powder

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Porous Si3N4/BN ceramics were prepared via nitridation of silicon powder, with Si and BN as starting powder, Y2O3 as sintering additive. After nitridation and sintering at 1680°C, porous Si3N4/BN ceramics with a porosity of 47%–51% and a flexural strength of 170–90 MPa were obtained. Compared with pure porous Si3N4 ceramics, the grains of porous Si3N4/BN ceramics were finer, the aspect ratio of -Si3N4 grains was higher, and the pore size was decreased, which can be attributed to grain-boundary pinning due to BN dispersions. The relatively high flexural strength was obtained with 5% BN addition. The porous Si3N4/BN ceramics also showed low shrinkage and machinable properties.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2010.04371.x

Publication date: March 1, 2011

bsc/jace/2011/00000094/00000003/art00007
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more