Sucrose-based sol-gel synthesis of microporous titanium carbide as target material for the production of radioisotopes

Zanini, Alice; Corradetti, S.; Carturan, S.; Colombo, Paolo; Andrighetto, A.; Franchin, Giorgia

doi:10.1016/j.micromeso.2022.111917

Cited by 8 publications

(5 citation statements)

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“…The study specifically revolved around nanocrystalline TiC particles featuring a cubic modification. These particles exhibited dimensions of 40 nm, a specific surface area (SSA) measuring 50 m 2 /g, a nano-state density of 0.08 g/cm 3 (with a real density of 4.93 g/cm 3 ),and a purity exceeding 99%, in accordance with US2052. The investigation involved samples subjected to irradiation at room temperature, utilizing a Co-60 source with an activity of 1.8627Gy/s at the Irradiation Center of the Institute of Radiation Problems.…”

Section: Methodsmentioning

confidence: 64%

“…In recent times, a diverse range of modifications to titanium carbide compounds has been extensively utilized across multiple sectors of modern technological devices [1][2][3][4][5][6][7]. The exceptional physical properties and elevated temperature resilience inherent in these compounds have propelled the broadening of their applications [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Study of the entropy and enthalpy of gamma irradiated TiC nanoparticles

Hakhiyeva

2024

UNEC j. eng. appl. sci.

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The thermal characteristics of nanocrystalline titanium carbide (TiC) particles were systematically compared before and after gamma irradiation through the application of Differential Scanning Calorimetry (DSC) spectroscopy. Utilizing experimental findings, the Gibbs energy of titanium carbide nanoparticles was ascertained within the temperature range spanning from 300 to 1270 K. The investigation of potential phase transitions in nanoparticles and the amorphization processes induced by gamma radiation was investigated employing the Differential Thermal Analysis (DTA) methodology. The enthalpy and entropy of the system comprising nanocrystalline 3C-SiC particles were computed both before and after exposure to gamma irradiation, with theoretical calculations corroborated through comparison with experimental outcomes. The values derived from experimental results for all thermophysical parameters were compared both before and after exposure to gamma radiation.

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Section: Methodsmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Study of the entropy and enthalpy of gamma irradiated TiC nanoparticles

Hakhiyeva

2024

UNEC j. eng. appl. sci.

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“…Figure 2 reports the typical observed superficial pattern: the material was composed of two phases, the formed TiC matrix and a dispersion of residual unreacted graphite clusters, as expected by the designed stoichiometry of TiC + 2C. XRD or EDS analyses for the verification of the possible presence of a residual phase of TiO 2 were not performed since similar previous studies highlighted that a thermal treatment in vacuum at a temperature above 1700 °C ensures total oxide degradation [ 23 , 30 , 31 ]. All specimens exhibited crack-shaped pores that were homogenously distributed on the sample surface, confirming the expected high porosity.…”

Section: Resultsmentioning

confidence: 87%

“…In the presented study, the production and characterization of a porous titanium carbide suitable for ISOL applications were performed. The selected production technique, which involved the carbothermal reduction of TiO 2 in the presence of a carbon source, was already consolidated in previous works [ 23 , 30 ]. However, in this study, this procedure was successfully used for the manufacture of approximately 40 mm diameter thin disks for the first time.…”

Section: Discussionmentioning

confidence: 99%

Thermal and Structural Characterization of a Titanium Carbide/Carbon Composite for Nuclear Applications

et al. 2022

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In the framework of ISOL (isotope separation on-line) facilities, porous carbides are among the most employed target materials for the production of radioactive ion beams for research. As foreseen by the ISOL technique, a production target is impinged by an energetic particle beam, inducing nuclear reactions from such an interaction. The resulting radionuclides are subsequently released, thanks to the high target working temperature (1600–2000 °C); ionized; and extracted into a beam. Since the target microstructure and porosity play a fundamental role in the radionuclide release efficiency, custom-made target materials are often specifically produced, resulting in unknown thermal and structural properties. Considering that such targets might undergo intense thermal stresses during operation, a thermal and structural characterization is necessary to avoid target failure under irradiation. In the presented work, a custom-made porous titanium carbide that was specifically designed for application as an ISOL target was produced and characterized. The thermal characterization was focused on the evaluation of the material emissivity and thermal conductivity in the 600–1400 °C temperature range. For the estimation of a reference material tensile stress limit, the virtual thermoelastic parameter approach was adopted. In particular, for the aforementioned temperature range, an emissivity between 0.7 and 0.8 was measured, whereas a thermal conductivity between 8 and 10 W/mK was estimated.

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“…These involve the use of alternative carbon sources such as phenolic resin or sucrose and the use of sol-gel approaches in place of traditional production techniques based on dry methods (powder mixing and pressing). These innovative methods allow to have a better control on the final materials properties, particularly in terms of type and amount of porosity [7].…”

Section: The Target Ion Source Complexmentioning

confidence: 99%