Skip to main content

The Relationship Between Microstructure and Fracture Toughness for Fibrous Materials for Diesel Particulate Filters

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

The Mode I fracture toughness of fibrous SiC and mullite materials with 60%–70% porosity was determined under ambient conditions using the double-torsion test method. The fracture toughness values obtained were 0.27 and 0.34 MPa¬∑m1/2 for fibrous SiC and mullite, respectively. These fibrous ceramics exhibit greater fracture resistance than porous monolithic ceramics with similar levels of porosity. A higher degree of cross-linking between the fibers led to further improvement in the fracture characteristics of the fibrous material. The differences in fracture behavior can be explained by the microstructural differences between these two classes of materials. The combination of high porosity and high fracture toughness for fibrous materials makes them ideal candidates for applications in diesel particulate filtration.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2009.03524.x

Affiliations: 1: GEO2 Technologies Inc., Woburn, Massachusetts 01801 2: Oak Ridge National Laboratory, Materials Science and Technology Division, Oak Ridge, Tennessee 37831

Publication date: April 1, 2010

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Partial Open Access Content
Partial 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