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Title: Additive manufacturing and mechanical characterization of high density fully stabilized zirconia

Abstract

Mechanical properties of additively manufactured 8 mol% yttria-stabilized zirconia (8YSZ) parts were extensively studied for the first time. A novel freeform extrusion fabrication process, called Ceramic On-Demand Extrusion (CODE), was employed to deposit an aqueous viscous suspension (~50 vol% solids loading) of fully stabilized zirconia powder in a layer-by-layer fashion. Each layer was exposed to infrared radiation after deposition to attain partial solidification due to drying. Before exposure, the layer was surrounded by oil to preclude non-uniform evaporation, which could cause warpage and crack formation. After the fabrication process was completed, the parts were humid-dried in an environmental chamber and densified by sintering under atmospheric pressure. Here standard test methods were employed to examine the properties of sintered parts including density, Vickers hardness, fracture toughness, Young's modulus, and flexural strength. Microstructural evaluation was also performed to observe the microstructural morphology and measure grain size. The results indicate that the properties of 8YSZ parts produced by the CODE process match those obtained by conventional fabrication techniques.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Missouri University of Science and Technology, Rolla, MO (United States)
Publication Date:
Research Org.:
Univ. of Missouri, Columbia, MO (United States); Missouri Univ. of Science and Technology, Rolla, MO (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE); Missouri University of Science and Technology
OSTI Identifier:
1533618
Alternate Identifier(s):
OSTI ID: 1414340
Grant/Contract Number:  
FE0012272
Resource Type:
Accepted Manuscript
Journal Name:
Ceramics International
Additional Journal Information:
Journal Volume: 43; Journal Issue: 8; Journal ID: ISSN 0272-8842
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; zirconium dioxide; Yttria; 3D printing; mechanical properties

Citation Formats

Ghazanfari, Amir, Li, Wenbin, Leu, Ming C., Watts, Jeremy L., and Hilmas, Gregory E. Additive manufacturing and mechanical characterization of high density fully stabilized zirconia. United States: N. p., 2017. Web. doi:10.1016/j.ceramint.2017.01.154.
Ghazanfari, Amir, Li, Wenbin, Leu, Ming C., Watts, Jeremy L., & Hilmas, Gregory E. Additive manufacturing and mechanical characterization of high density fully stabilized zirconia. United States. https://doi.org/10.1016/j.ceramint.2017.01.154
Ghazanfari, Amir, Li, Wenbin, Leu, Ming C., Watts, Jeremy L., and Hilmas, Gregory E. Wed . "Additive manufacturing and mechanical characterization of high density fully stabilized zirconia". United States. https://doi.org/10.1016/j.ceramint.2017.01.154. https://www.osti.gov/servlets/purl/1533618.
@article{osti_1533618,
title = {Additive manufacturing and mechanical characterization of high density fully stabilized zirconia},
author = {Ghazanfari, Amir and Li, Wenbin and Leu, Ming C. and Watts, Jeremy L. and Hilmas, Gregory E.},
abstractNote = {Mechanical properties of additively manufactured 8 mol% yttria-stabilized zirconia (8YSZ) parts were extensively studied for the first time. A novel freeform extrusion fabrication process, called Ceramic On-Demand Extrusion (CODE), was employed to deposit an aqueous viscous suspension (~50 vol% solids loading) of fully stabilized zirconia powder in a layer-by-layer fashion. Each layer was exposed to infrared radiation after deposition to attain partial solidification due to drying. Before exposure, the layer was surrounded by oil to preclude non-uniform evaporation, which could cause warpage and crack formation. After the fabrication process was completed, the parts were humid-dried in an environmental chamber and densified by sintering under atmospheric pressure. Here standard test methods were employed to examine the properties of sintered parts including density, Vickers hardness, fracture toughness, Young's modulus, and flexural strength. Microstructural evaluation was also performed to observe the microstructural morphology and measure grain size. The results indicate that the properties of 8YSZ parts produced by the CODE process match those obtained by conventional fabrication techniques.},
doi = {10.1016/j.ceramint.2017.01.154},
journal = {Ceramics International},
number = 8,
volume = 43,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}

Journal Article:

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Cited by: 53 works
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