DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Particle atomic layer deposition of alumina for sintering yttria-stabilized cubic zirconia

Journal Article · · Journal of the American Ceramic Society
DOI: https://doi.org/10.1111/jace.16091 · OSTI ID:1480237

The addition of aluminum oxide (Al2O3) as a sintering aid to yttria-stabilized zirconia (YSZ) reduces the required densification temperature. Sintering aids are incorporated using a number of processes which can lead to ambiguity when determining the effect of the sintering aid on the densification mechanism. In this study, a novel method for sintering aid addition, Particle Atomic Layer Deposition (ALD), was used to deposit an amorphous Al2O3 thin film on YSZ particles. Transmission electron microscopy confirmed the deposition of conformal Al2O3 thin films on the surface of the YSZ particles. The addition of Al2O3 to YSZ reduced the temperature at which densification began by ~75 degrees C, and 2.2 wt% Al2O3 addition resulted in a minimum activation energy for the intermediate stage of densification. This concentration is well in excess of the solubility limit of Al2O3 in YSZ, showing that Al2O3 does not enhance the densification of YSZ solely by dissolving into the YSZ lattice and activating volume diffusion. The addition of 0.7 wt% Al2O3 with one Particle ALD cycle enhanced the ionic conductivity of YSZ by 23% after sintering at 1350 degrees C for 2 hours, demonstrating that dense parts with high oxygen ion conductivities can be produced after sintering at reduced temperatures. One Particle ALD cycle is a fast, easily scaled-up process that eliminates the use of solvents and has substantial cost/performance advantages over conventional processing.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1480237
Report Number(s):
NREL/JA-5K00-72691
Journal Information:
Journal of the American Ceramic Society, Vol. 102, Issue 5; ISSN 0002-7820
Publisher:
American Ceramic SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

References (46)

A brief review of the ionic conductivity enhancement for selected oxide electrolytes journal October 2007
Electrolysis of carbon dioxide in Solid Oxide Electrolysis Cells journal August 2009
Microstructural, mechanical and electrical properties of alumina-doped cubic zirconia (c-ZrO2) journal March 2008
Atomic layer deposition on particles using a fluidized bed reactor with in situ mass spectrometry journal September 2007
Mechanical behavior of zirconia/alumina composites journal January 2005
Degradation of solid oxide cells during co-electrolysis of steam and carbon dioxide at high current densities journal October 2016
Initial Sintering with Constant Rates of Heating journal December 1970
Proton conduction in doped LaScO3 perovskites journal November 2004
Influence of α-Al2O3 addition on sintering and grain growth behaviour of 8 mol% Y2O3-stabilised cubic zirconia (c-ZrO2) journal January 2004
Mechanism of Alumina-Enhanced Sintering of Fine Zirconia Powder: Influence of Alumina Concentration on the Initial Stage Sintering journal June 2008
Effect of alumina additions upon electrical properties of 8 mol.% yttria-stabilised zirconia journal June 1999
Advances in solid oxide fuel cell technology journal November 2000
Catalyst Design with Atomic Layer Deposition journal February 2015
Effect of alumina-doping on grain boundary segregation-induced phase transformation in yttria-stabilized tetragonal zirconia polycrystal journal September 2006
Sintering densification curve: A practical approach for its construction from dilatometric shrinkage data journal January 2008
Computer Simulation Studies on Sintering and Grain Growth journal January 2005
Effect of cation doping on lattice and grain boundary diffusion in superplastic yttria-stabilized tetragonal zirconia journal February 2010
Cubic-Formation and Grain-Growth Mechanisms in Tetragonal Zirconia Polycrystal journal August 2003
Alumina atomic layer deposition nanocoatings on primary diamond particles using a fluidized bed reactor journal February 2008
Surface chemistry of atomic layer deposition: A case study for the trimethylaluminum/water process journal June 2005
Solid Solubility and Precipitation in a Single-Crystal Alumina-Zirconia System journal December 2002
Functionalization of fine particles using atomic and molecular layer deposition journal May 2012
Effects of doping alumina on the electrical and sintering performances of yttrium-stabilized-zirconia journal June 2016
Effect of alumina addition on initial sintering of cubic ZrO2 (8YSZ) journal April 2010
Colloidal processing, sintering and static grain growth behaviour of alumina-doped cubic zirconia journal January 2005
Atomic Layer Deposition: An Overview journal January 2010
Roles of alumina in zirconia-based solid electrolyte journal February 1995
Effect of Alumina on Sintering Behavior and Electrical Conductivity of High-Purity Yttria-Stabilized Zirconia journal August 1994
Microstructural Analysis of Sintered High-Conductivity Zirconia with Al203 Additions journal October 1982
Estimate of the Activation Energies for Boundary Diffusion from Rate-Controlled Sintering of Pure Alumina, and Alumina Doped with Zirconia or Titania journal May 1990
The role of Al2O3 impurities on the microstructure and properties of Y-TZP journal August 1999
Enhanced superplasticity in a alumina-containing zirconia prepared by colloidal processing journal September 2000
Sintering mechanism of fine zirconia powders with alumina added by powder mixing and chemical processes journal February 2008
Effect of Pore Distribution on Microstructure Development: I, Matrix Pores journal February 1988
Ni-based anode-supported Al2O3-doped-Y2O3-stabilized ZrO2 thin electrolyte solid oxide fuel cells with Y2O3-stabilized ZrO2 buffer layer journal February 2014
Average Grain Size in Polycrystalline Ceramics journal August 1969
Two-Stage Master Sintering Curve Approach to Sintering Kinetics of Undoped and Al2O3-Doped 8 Mol% Yttria-Stabilized Cubic Zirconia: Two-Stage MSC Approach to Sintering Kinetics of YSZ journal November 2010
Activation Energy for the Sintering of Two-Phase Alumina/Zirconia Ceramics journal August 1991
Emerging Applications of Atomic Layer Deposition for Lithium-Ion Battery Studies journal June 2012
Coating Fine Nickel Particles with Al 2 O 3 Utilizing an Atomic Layer Deposition-Fluidized Bed Reactor (ALD-FBR) journal April 2004
A computational study of yttria-stabilized zirconia: II. Cation diffusion journal March 2017
Sintering Kinetics at Constant Rates of Heating: Effect of Alumina on the Initial Sintering Stage of Yttria-Stabilized Cubic Zirconia Powder journal January 2006
Improvement of Grain-Boundary Conductivity of 8 mol % Yttria-Stabilized Zirconia by Precursor Scavenging of Siliceous Phase journal January 2000
Sensors, Chemical Sensors, Electrochemical Sensors, and ECS journal January 2003
Template-directed synthesis of porous alumina particles with precise wall thickness control via atomic layer deposition journal February 2012
Functionalization of Fine Particles Using Atomic and Molecular Layer Deposition journal September 2009

Cited By (1)

Particle atomic layer deposition journal January 2019

Figures / Tables (7)


Similar Records

· · OSTI ID:

· · OSTI ID:

· · OSTI ID: