2012
DOI: 10.1016/j.surfcoat.2012.06.055
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Characterization of the thermal conductivity of EB-PVD ZrO2–Y2O3 coatings with a pulsed thermal imaging method

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Cited by 7 publications
(3 citation statements)
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“…It consists in inserting a heating probe between two identical pieces of the sample under study, and to measure the temperature variation, which is linked with the thermal conductivity, given with 5% accuracy. The values found are 0:96 W m À1 K À1 for the Erbium oxide part and 0:73 W m À1 K À1 for the Dysprosium oxide part, which are close to pure Zirconia values (typically between 1 and 2 W m À1 K À1 [23]). The resolution of the 1-D Fourier equation with the assumption of same radiative and convection losses on this sample gives a surface temperature difference between the two parts of 34°C for a 1000°C backside uniform heating.…”
Section: Thermal Conductivity Measurementsupporting
confidence: 61%
“…It consists in inserting a heating probe between two identical pieces of the sample under study, and to measure the temperature variation, which is linked with the thermal conductivity, given with 5% accuracy. The values found are 0:96 W m À1 K À1 for the Erbium oxide part and 0:73 W m À1 K À1 for the Dysprosium oxide part, which are close to pure Zirconia values (typically between 1 and 2 W m À1 K À1 [23]). The resolution of the 1-D Fourier equation with the assumption of same radiative and convection losses on this sample gives a surface temperature difference between the two parts of 34°C for a 1000°C backside uniform heating.…”
Section: Thermal Conductivity Measurementsupporting
confidence: 61%
“…The TBC density ( can be calculated directly from its heat capacity because the TBC's specific heat (c) is affected only by the material's composition and, thus, is a constant for these specimens. Based on a commonly used TBC-specific heat value, c = 480 J/kg•K [19,20], predicted TBC densities for the specimens (a)~(d) are listed in Table 1. Further, because the bulk density of 100% dense ZrO 2 -4mol%Y 2 O 3 material is also a constant,  s = 6.05 g/cm 3 , the porosities (1-/ s ) of these specimens can also be calculated as listed in Table 1.…”
Section: Thermal Properties By the Pti-mla Methodsmentioning
confidence: 99%
“…세라믹스 열차폐 코팅재의 코팅 방법으로서는 대기 플 라즈마 용사법(APS, atmospheric plasma spraying) [1][2][3][4] , 전 자 빔 물리적 증착법(EBPVD, electron beam physical vapor deposition) [5][6][7][8] , 감압 플라즈마 용사법(LPPS, low pressure plasma spray), 진공 플라즈마 용사법(VPS, vacuum plasma spray), 용액 전구체 플라즈마 용사법(SPPS, solution precursor plasma spray) [9][10] , 고속 화염 용사법(HVOF, high velocity oxygen fuel) 등 여러 가지 방법이 있으나, 설비 는 인자(factor)로 작용할 수 있음이 여러 문헌에서 보고 되고 있다. [11][12][13] 이러한 코팅용 분말을 제작하기 위한 공 정의 하나로서 분무 건조법(spray drying)에 의한 방법이 용사코팅을 위한 분말로서 폭넓게 활용되고 있다.…”
Section: 서 론unclassified