151. DENSIFICATION, MICROSTRUCTURE AND GRAIN GROWTH IN SPARK PLASMA SINTERING OF ZIRCONIUM CARBIDE POWDER

Department: Mechanical & Aerospace Engineering
Faculty Advisor(s): Marc A. Meyers | Olevsky Eugene

Primary Student
Name: Xialu Wei
Email: x2wei@ucsd.edu
Phone: 858-260-8390
Grad Year: 2016

Abstract
In the present work, a rapid sintering technique - spark plasma sintering (SPS) has been employed to consolidate micron sized zirconium carbide powder under various processing conditions to construct a SPS densification map for such material. Densification mechanisms incorporated in both low heating rate and high heating rate SPS of ZrC powder have been compared to those involved in hot pressing using power-law creep equation. The prepared specimens have been characterized to qualitatively describe the impact of processing conditions on the densification kinetics at the microscopic level. A quantitative study on the grain growth mechanism during the final SPS stage is conducted by taking porosity dependence into account.

Industry Application Area(s)
Aerospace, Defense, Security | Energy/Clean technology | Materials

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