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Title: Synthesis of porous yttria-stabilized zirconia microspheres by ultrasonic spray pyrolysis

Authors:
; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1411448
Grant/Contract Number:
NE0000704
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Materials Letters
Additional Journal Information:
Journal Volume: 188; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-12-05 23:10:48; Journal ID: ISSN 0167-577X
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

Perez-Page, Maria, Guzalowski, Ryan, Muche, Dereck N. F., Castro, Ricardo H. R., and Stroeve, Pieter. Synthesis of porous yttria-stabilized zirconia microspheres by ultrasonic spray pyrolysis. Netherlands: N. p., 2017. Web. doi:10.1016/j.matlet.2016.10.082.
Perez-Page, Maria, Guzalowski, Ryan, Muche, Dereck N. F., Castro, Ricardo H. R., & Stroeve, Pieter. Synthesis of porous yttria-stabilized zirconia microspheres by ultrasonic spray pyrolysis. Netherlands. doi:10.1016/j.matlet.2016.10.082.
Perez-Page, Maria, Guzalowski, Ryan, Muche, Dereck N. F., Castro, Ricardo H. R., and Stroeve, Pieter. Wed . "Synthesis of porous yttria-stabilized zirconia microspheres by ultrasonic spray pyrolysis". Netherlands. doi:10.1016/j.matlet.2016.10.082.
@article{osti_1411448,
title = {Synthesis of porous yttria-stabilized zirconia microspheres by ultrasonic spray pyrolysis},
author = {Perez-Page, Maria and Guzalowski, Ryan and Muche, Dereck N. F. and Castro, Ricardo H. R. and Stroeve, Pieter},
abstractNote = {},
doi = {10.1016/j.matlet.2016.10.082},
journal = {Materials Letters},
number = C,
volume = 188,
place = {Netherlands},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.matlet.2016.10.082

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

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  • Fine yttria-stabilized zirconia powders were prepared by the spray pyrolysis of aqueous solutions of ZrOCl{sub 2} {center dot} 8H{sub 2}O and Y(NO{sub 3}){sub 3} {center dot} 5H{sub 2}O (3 mol%). An appropriate thermal treatment resulted in slightly porous spherical particles with a narrow size distribution. The sintering ability of these powders is evaluated.
  • Previous researchers have shown that it is possible to combine rare-earth oxides with the standard thermal barrier coating material (4.5 mol% Y{sub 2}O{sub 3}-ZrO{sub 2} 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 alloyedmore » 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 ZrO{sub 2}-4.4 Y{sub 2}O{sub 3}-1.4 Nd{sub 2}O{sub 3}-1.3 Yb{sub 2}O{sub 3}. The amount of Yb{sup 3+} and Nd{sup 3+} ions in the final coating was {approx}50% of that added to the starting suspension. Wide-angle X-ray diffraction revealed a cubic ZrO{sub 2} phase, consistent with the incorporation of more stabilizer into the zirconia crystal structure. The total porosity in the coatings was {approx}35-36%, with a bulk density of 3.94 g/cm{sup 3}. Small-angle X-ray scattering measured an apparent void specific surface area of {approx}2.68 m{sup 2}/cm{sup 3} for the alloyed coating and {approx}3.19 m{sup 2}/cm{sup 3} for the baseline coating. Thermal conductivity (k{sub th}) of the alloyed coating was {approx}0.8 W/m/K at 800 C, as compared with {approx}1.5 W/m/K at 800 C for the YSZ-only baseline coating. After 50 h at 1200 C, kth increased to {approx}1.1 W/m/K at 800 C for the alloyed samples, with an associated decrease in the apparent void specific surface area to {approx}1.55 m{sup 2}/cm{sup 3}.« less
  • Previous researchers have shown that it is possible to combine rare-earth oxides with the standard thermal barrier coating material (4.5 mol% Y{sub 2}O{sub 3}-ZrO{sub 2} 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 alloyedmore » 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 ZrO{sub 2}-4.4 Y{sub 2}O{sub 3}-1.4 Nd{sub 2}O{sub 3}-1.3 Yb{sub 2}O{sub 3}. The amount of Yb{sup 3+} and Nd{sup 3+} ions in the final coating was {approx}50% of that added to the starting suspension. Wide-angle X-ray diffraction revealed a cubic ZrO{sub 2} phase, consistent with the incorporation of more stabilizer into the zirconia crystal structure. The total porosity in the coatings was {approx}35-36%, with a bulk density of 3.94 g/cm{sup 3}. Small-angle X-ray scattering measured an apparent void specific surface area of {approx}2.68 m{sup 2}/cm{sup 3} for the alloyed coating and {approx}3.19 m{sup 2}/cm{sup 3} for the baseline coating. Thermal conductivity (k{sub th}) of the alloyed coating was {approx}0.8 W/m/K at 800 C, as compared with {approx}1.5 W/m/K at 800 C for the YSZ-only baseline coating. After 50 h at 1200 C, k{sub th} increased to {approx}1.1 W/m/K at 800 C for the alloyed samples, with an associated decrease in the apparent void specific surface area to {approx}1.55 m{sup 2}/cm{sup 3}.« less