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Title: MOCVD OF YSZ COATINGS USING ?-DIKETONATE PRECURSORS

Abstract

Metallorganic chemical vapor deposition (MOCVD) was used to fabricate yttria-stabilized zirconia as a thermal barrier coating. The MOCVD precursors were Y(tmhd)3 and Zr(tmhd)4 (tmhd = 2, 2, 6, 6-tetramethyl-3, 5-heptanedianato) and delivered via aerosol assisted liquid delivery (AALD). The maximum tetragonal YSZ coating rate was 14.2 1.3 m h -1 (at 845oC) yielding a layered coating microstructure. The growth was first-order with temperature (T < 827oC) with an apparent activation energy (Ea) of 50.9 4.3 kJ mol -1. Coating efficiency was a maximum of approximately 10% at the highest growth rate.

Authors:
 [1];  [1];  [2];  [1];  [3]
  1. ORNL
  2. Oak Ridge National Laboratory (ORNL)
  3. University of Florida
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML)
Sponsoring Org.:
FE USDOE - Office of Fossil Energy (FE)
OSTI Identifier:
947127
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 470; Journal Issue: 1-2; Journal ID: ISSN 0925-8388
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ACTIVATION ENERGY; AEROSOLS; CHEMICAL VAPOR DEPOSITION; COATINGS; EFFICIENCY; MICROSTRUCTURE; THERMAL BARRIERS; TBC; CVD; thermal barrier coating; chemical vapor deposition; yttria-stabilized zirconia

Citation Formats

Varanasi, Venu G, Besmann, Theodore M, Hyde, Robin L., Payzant, E Andrew, and Anderson, Timothy J. MOCVD OF YSZ COATINGS USING ?-DIKETONATE PRECURSORS. United States: N. p., 2009. Web. doi:10.1016/j.jallcom.2008.02.103.
Varanasi, Venu G, Besmann, Theodore M, Hyde, Robin L., Payzant, E Andrew, & Anderson, Timothy J. MOCVD OF YSZ COATINGS USING ?-DIKETONATE PRECURSORS. United States. https://doi.org/10.1016/j.jallcom.2008.02.103
Varanasi, Venu G, Besmann, Theodore M, Hyde, Robin L., Payzant, E Andrew, and Anderson, Timothy J. 2009. "MOCVD OF YSZ COATINGS USING ?-DIKETONATE PRECURSORS". United States. https://doi.org/10.1016/j.jallcom.2008.02.103.
@article{osti_947127,
title = {MOCVD OF YSZ COATINGS USING ?-DIKETONATE PRECURSORS},
author = {Varanasi, Venu G and Besmann, Theodore M and Hyde, Robin L. and Payzant, E Andrew and Anderson, Timothy J},
abstractNote = {Metallorganic chemical vapor deposition (MOCVD) was used to fabricate yttria-stabilized zirconia as a thermal barrier coating. The MOCVD precursors were Y(tmhd)3 and Zr(tmhd)4 (tmhd = 2, 2, 6, 6-tetramethyl-3, 5-heptanedianato) and delivered via aerosol assisted liquid delivery (AALD). The maximum tetragonal YSZ coating rate was 14.2 1.3 m h -1 (at 845oC) yielding a layered coating microstructure. The growth was first-order with temperature (T < 827oC) with an apparent activation energy (Ea) of 50.9 4.3 kJ mol -1. Coating efficiency was a maximum of approximately 10% at the highest growth rate.},
doi = {10.1016/j.jallcom.2008.02.103},
url = {https://www.osti.gov/biblio/947127}, journal = {Journal of Alloys and Compounds},
issn = {0925-8388},
number = 1-2,
volume = 470,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2009},
month = {Thu Jan 01 00:00:00 EST 2009}
}