Effect Of Holding Time On The Microstructure And Properties Of Flash-Sintered Y2O3-Doped Zro2

Keywords

Defects; Flash-sintering; Impedance; ZrO 2

Abstract

A mixture of pure monolithic ZrO2and Y2O3 powders was flash-sintered at different holding times. The results show that flash-sintering led to a rapid phase transformation: The starting monolithic ZrO2completely transformed to tetragonal phase after the flash-sintering for as short as 10 s. Although dense samples with relatively uniform microstructures were obtained at a holding time of longer than 5 min, the holding time had no significant effect on grain size. Both the bulk and intrinsic grain-boundary conductivity increased with an increase in the holding time, indicating that flash-sintering created oxygen vacancies in both grains and grain boundaries that accumulated with an increase in the holding time.

Publication Date

11-15-2016

Publication Title

Ceramics International

Volume

42

Issue

15

Number of Pages

17442-17446

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.ceramint.2016.08.048

Socpus ID

84995461003 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84995461003

This document is currently not available here.

Share

COinS