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Thermal barrier coa...
Thermal barrier coatings from sol-gel-derived spray-grade Y2O3-ZrO2 microspheres
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Chatterjee, M. (författare)
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Ray, J. (författare)
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Chatterjee, A. (författare)
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visa fler...
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Ganguli, D. (författare)
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Joshi, S. V. (författare)
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Srivastava, M. P. (författare)
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- Kluwer Academic Publishers, 1993
- 1993
- Engelska.
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Ingår i: Journal of Materials Science. - : Kluwer Academic Publishers. ; 28:10, s. 2803-2807
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- For the development of ceramic thermal barrier coatings, spray-grade yttria-stabilized zirconia microspheres were prepared by the sol-gel technique. Oxide microspheres were obtained by calcination of the corresponding gel spheres at 1000 °C. Scanning electron microscopic and optical microscopic observations revealed the material thus obtained to have a predominantly spherical morphology and the requisite size distribution (5-50 μm). The dense, calcined microspheres showed good flowability. X-ray diffraction studies indicated the presence of the tetragonal polymorph of ZrO2 as the major phase, in addition to about 14% monoclinic ZrO2. The plasma-sprayed YSZ coatings made from the sol-gel-derived microspheres showed a further decrease in the monoclinic ZrO2 content (6%). The coatings survived 40-50 thermal cycles (30 min at 1200 °C followed by a water quench), indicating good thermal shock resistance. © 1993 Chapman & Hall.
Nyckelord
- Ceramic coatings
- Morphology
- Plasma spraying
- Zirconia
- Oxide microsphere
- Thermal barrier coatings
- Thermal shock resistance
- X-ray diffraction studies
- Zirconia powders
- Sol-gels
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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