Compressive creep behavior of spark plasma sintered La2O3–YSZ composite |
| |
| Authors: | KD Robles Arellano L Bichler K Mondal |
| |
| Affiliation: | 1. School of Engineering, University of British Columbia – Okanagan, 3333 University Way, Kelowna, Canada V1V 1V7;2. Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur 208016, India |
| |
| Abstract: | The present paper describes compressive creep behavior of cubic 8 mol% yttria stabilized zirconia+10 mol% La2O3 (fabricated by Spark Plasma Sintering) in the temperature range of 1300–1330 °C at a stress level of 45–78 MPa in vacuum. The pre- and post-creep microstructures, relative magnitudes of the stress exponent (n=1.7–2.1) and the activation energy (540–580 kJ/mol) suggest that grain boundary sliding aided by inter-diffusion of La and Zr leading to the formation of pyrochlore La1.6Y0.4Zr2O7 phase at the grain boundaries during creep is the active creep mechanism in this composite. |
| |
| Keywords: | A Sintering B Composite C Creep D ZrO2 La2O3 |
| 本文献已被 ScienceDirect 等数据库收录！ |
