Spark Plasma Sintering of Rare-Earth Metals Doped Ceria
Download
1 / 1

Spark Plasma Sintering of Rare-Earth Metals Doped Ceria - PowerPoint PPT Presentation


  • 132 Views
  • Uploaded on

Spark Plasma Sintering of Rare-Earth Metals Doped Ceria. Lia Stanciu, School of Materials Engineering, Purdue University, West Lafayette, IN, 47907.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Spark Plasma Sintering of Rare-Earth Metals Doped Ceria' - xaviera-bowers


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Spark Plasma Sintering of Rare-Earth Metals Doped Ceria

Lia Stanciu, School of Materials Engineering, Purdue University, West Lafayette, IN, 47907

Spark Plasma Sintering: The novel sintering method that we used, which applies an electrical field, high heating rate and short holding times at the maximum sintering temperature to densify, while preserving a fine grain size, the lanthanide-doped ceria ceramics.

We aim investigate the behavior of doped ceria materials upon SPS sintering at 1100 and 1200 degrees Celsius.

Nanometric powders of ceria doped with 20 at% of three different rare earth metals (Sm, Gd, Yb) were synthesized by a solution method and subsequently sintered by SPS at 1100 and 1200°C. The particle sizes of the precursor powders were 26.4 (SDC), 19.3 (YDC) and 31.4 nm (GDC), respectively. The grain sizes of the samples SPS sintered at 1100°C registered a three to five fold increase relative to the precursor powders. When the SPS sintering temperature was increased to 1200°C, the grain growth was enhanced to an 8-19 fold increase relative to the precursor powder.

Schematic of the SPS set up

Impedance spectra for the M3+-CeO2 samples, SPS sintered at 1100°C; (left) measurement temperature = 290°C; (right) measurement temperature = 250°C

SEM images of the SPS sintered lanthanide doped CeO2


ad