Single‐step densification of nanocrystalline CeO2 by the cold sintering process
Abstract
This study reports the successful single‐step cold sintering of nanocrystalline cerium dioxide (CeO2) at temperatures ranging from 250°C to 400°C under 500 MPa, using molten hydroxides flux solvents. CeO2 ceramics obtained were 82 to 91% of the theoretical density. Structural and microstructural investigations of the as‐cold sintered CeO2 ceramics were conducted to further understand this new approach to cold sinter ceramics. Electrical conductivity measured by two‐point AC impedance demonstrated an activation energy for grain conductivity of 0.49 eV, with impedance spectra characteristic of nanoscale CeO2.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 17, 2020
- Source ID
- 10.1111/jace.17003
Entities
People
- Arnaud Ndayishimiye
- Clive A. Randall
- Jonathan Perini
- Kosuke Tsuji
- Scott T. Misture
- Sun Hwi Bang
- Thomasina H. Zaengle
- Zhongming Fan
Organizations
- Air Force Office of Scientific Research
- Alfred University
- Pennsylvania State University
- United States Department of Energy