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Impact of Impurity ...
Impact of Impurity Content on the Sintering Resistance and Phase Stability of Dysprosia- and Yttria-Stabilized Zirconia Thermal Barrier Coatings
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- Curry, Nicholas, 1984- (författare)
- Högskolan Väst,Avd för maskinteknik,PTW
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- Janikowski, Wysomir (författare)
- University of Manchester
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- Pala, Zdenek (författare)
- Academy of Sciences of the Czech Republic, Institute of Plasma Physics
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- Vilémová, Monica (författare)
- Academy of Sciences of the Czech Republic, Institute of Plasma Physics
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- Markocsan, Nicolaie, 1967- (författare)
- Högskolan Väst,Avd för industriell produktion,PTW
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(creator_code:org_t)
- 2013-10-19
- 2014
- Engelska.
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Ingår i: Journal of thermal spray technology (Print). - : Springer Science and Business Media LLC. - 1059-9630 .- 1544-1016. ; 23:1-2, s. 160-169
- Relaterad länk:
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http://link.springer...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Dysprosia-stabilized zirconia (DySZ) is a promising candidate to replace yttria-stabilized zirconia (YSZ) as a thermal barrier coating due to its lower inherent thermal conductivity. It is also suggested in studies that DySZ may show greater stability to high temperature phase changes compared to YSZ, possibly allowing for coatings with extended lifetimes. Separately, the impurity content of YSZ powders has been proven to influence high-temperature sintering behavior. By lowering the impurity oxides within the spray powder, a coating more resistant to sintering can be produced. This study presents both high purity and standard purity dysprosia and YSZ coatings and their performance after a long heat treatment. Coatings were produced using powder with the same morphology and grain size; only the dopant and impurity content were varied. Samples have been heat treated for exposure times up to 400 h at a temperature of 1150 °C. Samples were measured for thermal conductivity to plot the evolution of coating thermal properties with respect to exposure time. Thermal conductivity has been compared to microstructure analysis and porosity measurement to track structural changes. Phase analysis utilizing x-ray diffraction was used to determine differences in phase degradation of the coatings after heat treatment. © 2013 ASM International.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- atmospheric plasma spray (APS)
- thermal and phase stability of coatings
- thermal barrier coatings (TBCs)
- thermal conductivity
- zirconia
- WIL
- Work-integrated Learning
- AIL
- Manufacturing and materials engineering
- Produktions- och materialteknik
- Work Integrated Learning
- Arbetsintegrerat lärande
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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