Non-destructive analysis of miniaturized fusion materials samples and irradiation capsules by X-ray micro-tomography

Tiseanu, Ion; Mandache, Bogdan N.

doi:10.1016/j.fusengdes.2005.06.180

Cited by 11 publications

(11 citation statements)

References 3 publications

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“…While the maximum resolution of 2.5 m/voxel, on a relatively large sample (up to 5 mm × 5 mm × 5 mm), is a remarkable performance, the image noise might be a perturbation factor for the accurate porosity factor evaluation. In order to reduce the image noise two steps were considered: (1) reduction of reconstruction artefacts like "ring artefacts" [8] and "beam hardening artefacts" [9,10] and (2) upgrade the irradiation head of our X-ray tube with a high power diamond target for improved photon statistics. The diamond target ( Fig.…”

Section: Experiments and Resultsmentioning

confidence: 99%

X-ray micro-tomography studies on carbon based composite materials for porosity network characterization

Tiseanu

Tsitrone

Kreter

et al. 2011

Fusion Engineering and Design

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Section: Experiments and Resultsmentioning

confidence: 99%

X-ray micro-tomography studies on carbon based composite materials for porosity network characterization

Tiseanu

Tsitrone

Kreter

et al. 2011

Fusion Engineering and Design

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“…The image acquisition, 3D reconstruction and visualization have been carried out by two networked Dual CPU (2 GHz, 2GB) workstations using X-ray source (Phoenix X-ray) at 70 kV and the tube current of 250 mA [17].…”

Section: Characterization Of Cnf/smf Composite Materialsmentioning

confidence: 99%

Carbon nanofibers grown on metallic filters as novel catalytic materials

Tribolet

Kiwi‐Minsker

2005

Catalysis Today

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Carbon nanofibers (CNF) were synthesized on sintered metal fibers (SMF) filters of nickel and Ni-containing alloys (Inconel, stainless steel (SS)) by thermal chemical vapor deposition of ethane in the presence of hydrogen at $660 8C. The CNFs were formed directly over the SMF filters without deposition of metal particles. The catalytic active sites leading to the CNF formation were attained by oxidation-reduction of the SMF filter. The CNFs present platelet morphology as determined by X-ray diffraction and transmission electron microscopy. The CNF/ SMF composites have thin carbon layer in the microns range strongly anchored to the metal surface. The initial open structure of SMF filters is preserved. Scanning electron microscopy together with temperature programmed oxidation suggests the formation of uniform CNFs deposits on SMF Inconel with fiber's diameters in the range of 70 nm. Carbon deposits with a different nature were observed over SMF Ni and SMF ss .The CNF/SMF Inconel composites have high specific surface area due to mesopores of CNFs, high thermo-conductivity and open 3D macrostructure. This is advantageous for catalytic applications, especially during the catalysis of highly exo/endothermic reactions in reactors with structured catalytic bed. #

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“…The system is equipped with a high performance Nanofocus X-Ray source for non-destructive inspection. The source is operational in micro-or nano-focus regime in which case it is capable of sub-micron feature recognition, at a tube voltage up to 225 kV and a maximum power of 10÷20 W. X-Ray images can be acquired by using three different high resolution detector types: Image Intensifier (768x576 pixels of 132x132 µm The method for tungsten coating analysis was implemented using the Tomo-Analytic system, which was developed especially for fusion materials analysis [4]. Tomo-Analytic is a combined X-ray fluorescence (µXRF) and cone-beam µXCT system for the noninvasive 3D morphology and composition mapping.…”

Section: Methodsmentioning

confidence: 99%

“…Upgrade and work is currently in progress to completely replace the existing JET CFC tiles with tungsten-coated tiles within the JET ITER-like wall project. The need for a fast and nondestructive method which allows the quantitative determination of the thickness of a tungsten coating on a carbon material on large areas motivated us to develop a combined absorption/fluorescence X-ray technique [4]. We show in this paper that this method provides fast analysis with high spatial resolution of the deposited layers.…”

Section: Introductionmentioning

confidence: 92%

Advanced x-ray imaging of metal-coated/impregnated plasma-facing composite materials

et al. 2011

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PACS: 81.70.Tx, 78.70.En. AbstractA combination of X-ray imaging techniques is employed for the characterization of coated/impregnated carbon based composite materials to be used as Plasma Facing Components (PFC) in fusion devices. X-ray micro-tomography (µXCT) is applied for the visualization of Carbon Fiber Composites (CFC) -Cu joined samples and also for the CFC material porosity network characterization. The quantitative determination of the tungsten coating thickness on carbon materials is performed using a combined absorption/fluorescence X-ray technique (µXRFT). The method was applied at the analysis of W coated fine grain graphite (FGG) and CFC tiles. The X-ray imaging techniques provide fast analysis and high spatial resolution.

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Non-destructive analysis of miniaturized fusion materials samples and irradiation capsules by X-ray micro-tomography

Cited by 11 publications

References 3 publications

X-ray micro-tomography studies on carbon based composite materials for porosity network characterization

X-ray micro-tomography studies on carbon based composite materials for porosity network characterization

Carbon nanofibers grown on metallic filters as novel catalytic materials

Advanced x-ray imaging of metal-coated/impregnated plasma-facing composite materials

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