Paper Title:
Crack Healing, Reopening and Thermal Expansion Behavior of Al2TiO5 Ceramics at High Temperature
  Abstract

The low thermal expansion (α25-1100oC = 0.05 ~ 1.6 × 10–6/K) of Al2TiO5 ceramics are apparently due to a combination of grain boundary micro cracking caused by the large thermal expansion anisotropy of the crystal axes of the Al2TiO5 phase. During the reheating run, the individual crystallites expanded at low temperature; thus, the solid volume of the specimen expanded into the micro cracks, where as the macroscopic dimensions remained almost unchanged. As a result, the material expanded very little. The micro cracks closed at higher temperatures. This result is closely related to relatively steeper thermal expansion curves.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
2448-2450
DOI
10.4028/www.scientific.net/KEM.336-338.2448
Citation
I. J. Kim, K. S. Lee, C. G. Aneziris, "Crack Healing, Reopening and Thermal Expansion Behavior of Al2TiO5 Ceramics at High Temperature", Key Engineering Materials, Vols. 336-338, pp. 2448-2450, 2007
Online since
April 2007
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: M.C. Tsai, Y.A. Chen, C.F. Wu, Fuh Kuo Chen
Abstract:Micro-metal forming technologies are mass production methods, net shape forming, low-cost procedures and quality controlled processes. Its...
705
Authors: Li Chen, Mehran Mehregany
Abstract:Micro-hotplate platforms, including the heating and sensing resistors, are fabricated by surface micromachining techniques from...
863
Authors: Zdeněk Majer, Pavel Hutař, Zdeněk Knésl
Abstract:In this paper polymeric particulate composites are studied (especially polypropylene (PP) matrix stuffed by rigid mineral fillers)....
564
Authors: Jong Guk Yun, Xin Ming Cao, Yue Wang, Yan Kang, Xiao Wu Li
Abstract:Fatigue deformation behavior of the commercially pure iron containing micro-voids at grain boundaries (GBs) were investigated under total...
1942
Authors: Jun Cheng, Ya Dong Gong, Yue Ming Liu
Chapter 5: Micro and Nano Machining
Abstract:This paper presents a micro-grinding experiment on AISI 1020 steel to study micro grinding principle. A novel micro shaft grinding tool is...
557