Effects of Electric Field on Selective Laser Sintering of Yttria-Stabilized Zirconia Ceramic Powder

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Date

2018

Authors

Hagen, Deborah
Kovar, Desiderio
Beaman, Joseph J.

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University of Texas at Austin

Abstract

Selective laser sintering (SLS) of ceramic material is particularly challenging. High sintering temperatures and slow sintering kinetics of ceramic material combined with poor thermal shock resistance have resulted in cracking when ceramics are sintered to full density one layer at a time. This work investigates the use of an electric field applied simultaneously with laser scanning to accelerate the kinetics of sintering to produce a multi-layer SLS ceramic part. Ceramic sintering rates have been shown to increase by orders of magnitude during conventional furnace-based flash sintering, in which electric field applied simultaneously with furnace heating. In this work, we investigate the effects of an electric field applied during SLS processing of yttria-stabilized zirconia ceramic.

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