Paper Title:
Thermal Shock Behaviour of Open-Cell Cordierite Foams
  Abstract

Open-cell ceramic foams are being considered for a variety of applications owing to their high permeability and low weight, including molten metal filters, catalytic substrates and radiant burners. In these applications, foams are exposed to high temperatures and thermal gradients and thus the materials used require resistance to severe thermal stresses during service. Unfortunately, little is known about the thermal shock behaviour of cordierite foams when subjected to sudden changes in temperature. The objective of the present study was to investigate the thermal shock behaviour of two kinds of cordierite-based ceramic foams manufactured by the replication process. Thermal shock experiments were carried out by rapidly transferring the heated samples from a resistance furnace to a quenching bath containing distilled water followed by measuring of the retained flexural strength. Unlike dense cordierite samples that showed a sudden decrease in flexural strength at quench temperature differences above 325 K, the strength retained after thermal shock by open-cell cordierite foams decreased gradually with increasing quench temperatures. This suggests a cumulative damage mechanism reflecting an increase in damage throughout the material rather than sudden failure owing to propagation of pre-existing cracks.

  Info
Periodical
Materials Science Forum (Volumes 514-516)
Edited by
Paula Maria Vilarinho
Pages
764-767
DOI
10.4028/www.scientific.net/MSF.514-516.764
Citation
F. A. C. Oliveira, S. Dias, J. C. Fernandes, "Thermal Shock Behaviour of Open-Cell Cordierite Foams", Materials Science Forum, Vols. 514-516, pp. 764-767, 2006
Online since
May 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: A. Balakrishnan, Min Cheol Chu, B.B. Panigrahi, K.J. Yoon, J.C. Kim, Byoung Cheon Lee, Taik Nam Kim, Seong Jai Cho
Abstract:Molten Soda lime glass (SLG) was penetrated into the surface of ZTA at 1500°C for the holding time of 1 to 10 h. The depth of the glass...
695
Authors: Jian Li, Zhi Xiong Huang, De Liang Jin
Abstract:The heating style of the plane mould has great influence on the mechanical properties of E-SMC parts. In this paper, the temperature...
321
Authors: You Jun Lu, Hong Fang Shen, Yan Ming Wang
Composites
Abstract:High-temperature mechanical properties, machinability, oxidation resistance and thermal shock resistance of different content of carbon...
276
Authors: Xin Yan Yue, Jian Jun Wang, Qi Sun, Hong Qiang Ru
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:SiC-TiB2 composite was prepared at 2298 K by using pressureless sintering. The microstructures and mechanical properties of the SiC-TiB2...
812
Authors: Hai Jiang, Chun Yan Tian
Chapter 2: Micro/Nano Materials and Equipments
Abstract:Silicon nitride nanoceramics were fabricated by hot press sintering two kinds of Si3N4 nano-sized powders. The effect...
239