In-Flight Alloying of Nanocrystalline Yttria-Stabilized Zirconia Using Suspension Spray to Produce Ultra-Low Thermal Conductivity Thermal Barriers
2010; Wiley; Volume: 8; Issue: 6 Linguagem: Inglês
10.1111/j.1744-7402.2010.02593.x
ISSN1744-7402
AutoresKent VanEvery, Matthew John M. Krane, Rodney W. Trice, Wallace D. Porter, Hsin Wang, M.F. Besser, D.J. Sordelet, Ján Ilavský, Jonathan Almer,
Tópico(s)nanoparticles nucleation surface interactions
ResumoInternational Journal of Applied Ceramic TechnologyVolume 8, Issue 6 p. 1382-1392 In-Flight Alloying of Nanocrystalline Yttria-Stabilized Zirconia Using Suspension Spray to Produce Ultra-Low Thermal Conductivity Thermal Barriers Kent VanEvery, Kent VanEvery School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 §Present address: Progressive Surface, 4695 Danvers Dr. SE, Grand Rapids, Michigan 49512Search for more papers by this authorMatthew John M. Krane, Matthew John M. Krane School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907Search for more papers by this authorRodney W. Trice, Rodney W. Trice School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 * rtrice@purdue.edu Search for more papers by this authorWallace Porter, Wallace Porter Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6064Search for more papers by this authorHsin Wang, Hsin Wang Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6064Search for more papers by this authorMatthew Besser, Matthew Besser Ames Laboratory, Iowa State University, Ames, Iowa 50011-3020Search for more papers by this authorDan Sordelet, Dan Sordelet Ames Laboratory, Iowa State University, Ames, Iowa 50011-3020 ¶Present address: Caterpillar Inc., Technical Center Bldg. E/854, 14009 Old Galena Road, Mossville, Illinois 61552Search for more papers by this authorJan Ilavsky, Jan Ilavsky Argonne National Laboratory, Argonne, Illinois 60439Search for more papers by this authorJonathan Almer, Jonathan Almer Argonne National Laboratory, Argonne, Illinois 60439Search for more papers by this author Kent VanEvery, Kent VanEvery School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 §Present address: Progressive Surface, 4695 Danvers Dr. SE, Grand Rapids, Michigan 49512Search for more papers by this authorMatthew John M. Krane, Matthew John M. Krane School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907Search for more papers by this authorRodney W. Trice, Rodney W. Trice School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 * rtrice@purdue.edu Search for more papers by this authorWallace Porter, Wallace Porter Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6064Search for more papers by this authorHsin Wang, Hsin Wang Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6064Search for more papers by this authorMatthew Besser, Matthew Besser Ames Laboratory, Iowa State University, Ames, Iowa 50011-3020Search for more papers by this authorDan Sordelet, Dan Sordelet Ames Laboratory, Iowa State University, Ames, Iowa 50011-3020 ¶Present address: Caterpillar Inc., Technical Center Bldg. E/854, 14009 Old Galena Road, Mossville, Illinois 61552Search for more papers by this authorJan Ilavsky, Jan Ilavsky Argonne National Laboratory, Argonne, Illinois 60439Search for more papers by this authorJonathan Almer, Jonathan Almer Argonne National Laboratory, Argonne, Illinois 60439Search for more papers by this author First published: 17 December 2010 https://doi.org/10.1111/j.1744-7402.2010.02593.xCitations: 7 Major portions of this research were funded by the National Science Foundation via grant CMMI-0456534. This support is gratefully acknowledged. Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. This project involved research sponsored by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies, as part of the High Temperature Materials Laboratory User Program, Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract number DE-AC05-00OR22725. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Previous researchers have shown that it is possible to combine rare-earth oxides with the standard thermal barrier coating material (4.5 mol% Y2O3–ZrO2 or YSZ) to form ultra-low thermal conductivity coatings using a standard powder manufacturing route. A similar approach to making low thermal conductivity coatings by adding rare-earth oxides is discussed presently, but a different manufacturing route was used. This route involved dissolving hydrated ytterbium and neodymium nitrates into a suspension of 80 nm diameter 4.5 mol% YSZ powder and ethanol. Suspension plasma spray was then used to create coatings in which the YSZ powders were alloyed with rare-earth elements while the plasma transported the melted powders to the substrate. Mass spectrometry measurements showed a YSZ coating composition, in mol%, of ZrO2–4.4 Y2O3–1.4 Nd2O3–1.3 Yb2O3. The amount of Yb3+ and Nd3+ ions in the final coating was ∼50% of that added to the starting suspension. Wide-angle X-ray diffraction revealed a cubic ZrO2 phase, consistent with the incorporation of more stabilizer into the zirconia crystal structure. The total porosity in the coatings was ∼35–36%, with a bulk density of 3.94 g/cm3. Small-angle X-ray scattering measured an apparent void specific surface area of ∼2.68 m2/cm3 for the alloyed coating and ∼3.19 m2/cm3 for the baseline coating. Thermal conductivity (kth) of the alloyed coating was ∼0.8 W/m/K at 800°C, as compared with ∼1.5 W/m/K at 800°C for the YSZ-only baseline coating. After 50 h at 1200°C, kth increased to ∼1.1 W/m/K at 800°C for the alloyed samples, with an associated decrease in the apparent void specific surface area to ∼1.55 m2/cm3. Citing Literature Volume8, Issue6November/December 2011Pages 1382-1392 RelatedInformation
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