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Characterization of...
Characterization of Microstructure and Thermal Properties of YSZ Coatings Obtained by Axial Suspension Plasma Spraying (ASPS)
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- Ganvir, Ashish, 1991- (författare)
- Högskolan Väst,Avd för tillverkningsprocesser,PTW
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- Curry, Nicholas, 1984- (författare)
- Högskolan Väst,Avd för maskinteknik,PTW
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- Björklund, Stefan, 1969- (författare)
- Högskolan Väst,Avd för tillverkningsprocesser,PTW
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- Markocsan, Nicolaie, 1967- (författare)
- Högskolan Väst,Avd för tillverkningsprocesser,PTW
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- Nylén, Per, 1960- (författare)
- Högskolan Väst,Avd för industriell produktion,PTW
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(creator_code:org_t)
- 2015-06-24
- 2015
- Engelska.
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Ingår i: Journal of thermal spray technology (Print). - : Springer Science and Business Media LLC. - 1059-9630 .- 1544-1016. ; 24:7, s. 1195-1204
- Relaterad länk:
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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
- The paper aims at demonstrating various microstructures which can be obtained using the suspension spraying technique and their respective significance in enhancing the thermal insulation property of a thermal barrier coating. Three different types of coating microstructures are discussed which were produced by the Axial Suspension Plasma Spraying. Detailed characterization of coatings was then performed. Optical and scanning electron microscopy were utilized for microstructure evaluations; x-ray diffraction for phase analysis; water impregnation, image analysis, and mercury intrusion porosimetry for porosity analysis, and laser flash analysis for thermal diffusivity measurements were used. The results showed that Axial Suspension Plasma Spraying can generate vertically cracked, porous, and feathery columnar-type microstructures. Pore size distribution was found in micron, submicron, and nanometer range. Higher overall porosity, the lower density of vertical cracks or inter-column spacing, and higher inter-pass porosity favored thermal insulation property of the coating. Significant increase in thermal diffusivity and conductivity was found at higher temperature, which is believed to be due to the pore rearrangement (sintering and pore coarsening). Thermal conductivity values for these coatings were also compared with electron beam physical vapor deposition (EBPVD) thermal barrier coatings from the literature and found to be much lower. © 2015 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
- Coatings; Cracks; Diffusion; Diffusion barriers; Microstructure; Physical vapor deposition; Plasma jets; Plasma spraying; Pore size; Porosity; Scanning electron microscopy; Sintering; Thermal conductivity; Thermal diffusivity; Thermal insulation; Thermal spraying; X ray diffraction; Yttria stabilized zirconia
- Axial injections; Columnar microstructures; Nanometer pores; Suspension plasma spraying; Vertical crack
- Thermal barrier coatings
- Manufacturing and materials engineering
- Produktions- och materialteknik
- Production Technology
- Produktionsteknik
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- art (ämneskategori)
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