Electrochemical deposition of nickel targets from aqueous electrolytes for medical radioisotope production in accelerators: a review

Mieszkowska, M.; Grdeń, M.

doi:10.1007/s10008-021-04950-w

Cited by 6 publications

(1 citation statement)

References 243 publications

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“…Sometimes they are provided in powder form, without a uniform shape and size distribution. This may not be an issue when standard target manufacturing techniques are used, such as evaporation, rolling or electrodeposition because before these processes, the powder is melted in a bead, pressed in a pellet or it is dissolved in the electrolyte solution, respectively [1][2][3][4][5][6]. However, in some cases, such as isotopically enriched refractory metals (e.g., Ti), non-standard techniques for target manufacturing, requiring a fine and homogeneous powder particle distribution, have to be considered instead [1,7,8].…”

Section: Introductionmentioning

confidence: 99%

Cryomilling of Isotope-Enriched Ti Powders for HIVIPP Deposition to Manufacture Targets for Nuclear Cross Section Measurement

et al. 2023

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The realization of isotopically enriched Ti targets for nuclear cross-section measurements requires particular attention, from the starting material preparation up to the deposition technique. In this work, a cryomilling process was developed and optimized, aimed at reducing the size of 49,50Ti metal sponge as provided by the supplier (size up to 3 mm), to the optimal size of 10 µm, to fit the High Energy Vibrational Powder Plating technique used for target manufacturing. The optimization of the cryomilling protocol and the HIVIPP deposition using natTi material was thus performed. The scarce amount of the enriched material to be treated (about 150 mg), the need to obtain a non-contaminated final powder and a uniform target thickness of about 500 µg/cm2 were taken into account. The 49,50Ti materials were then processed and 20 targets of each isotope were manufactured. Both powders and the final Ti targets produced were characterized by SEM-EDS analysis. The amount of Ti deposited was measured by weighing, indicating reproducible and homogeneous targets, with an areal density of 468 ± 110 µg/cm2 for 49Ti (n = 20) and 638 ± 200 µg/cm2 for 50Ti (n = 20). The uniformity of the deposited layer was also confirmed by the metallurgical interface analysis. The final targets were used for the cross section measurements of the 49Ti(p,x)47Sc and 50Ti(p,x)47Sc nuclear reaction routes aimed at the production of the theranostic radionuclide 47Sc.

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Section: Introductionmentioning

confidence: 99%

Cryomilling of Isotope-Enriched Ti Powders for HIVIPP Deposition to Manufacture Targets for Nuclear Cross Section Measurement

et al. 2023

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Electrochemical deposition of nickel from aqueous electrolytic baths prepared by dissolution of metallic powder

Próchniak

Grdeń

2021

J Solid State Electrochem

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A new method of preparation of aqueous electrolyte baths for electrochemical deposition of nickel targets for medical accelerators is presented. It starts with fast dissolution of metallic Ni powder in a HNO3-free solvent. Such obtained raw solution does not require additional treatment aimed to removal nitrates, such as the acid evaporation and Ni salt precipitation-dissolution. It is used directly for preparation of the nickel plating baths after dilution with water, setting up pH value and after possible addition of H3BO3. The pH of the baths ranges from alkaline to acidic. Deposition of 95% of ca. 50 mg of Ni dissolved in the bath takes ca. 3.5 h for the alkaline electrolyte while for the acidic solution it requires ca. 7 h. The Ni deposits obtained from the acidic bath are physically and chemically more stable and possess smoother and crack-free surfaces as compared to the coatings deposited from the alkaline bath. A method of estimation of concentration of H2O2 in the electrolytic bath is also proposed.

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Optimisation of parameters of complete nickel electrodeposition from acidic aqueous electrolytic baths prepared by dissolution of metal powder

Próchniak

Grdeń

2022

J Solid State Electrochem

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Electrochemical deposition of nickel targets from aqueous electrolytes for medical radioisotope production in accelerators: a review

Cited by 6 publications

References 243 publications

Cryomilling of Isotope-Enriched Ti Powders for HIVIPP Deposition to Manufacture Targets for Nuclear Cross Section Measurement

Cryomilling of Isotope-Enriched Ti Powders for HIVIPP Deposition to Manufacture Targets for Nuclear Cross Section Measurement

Electrochemical deposition of nickel from aqueous electrolytic baths prepared by dissolution of metallic powder

Optimisation of parameters of complete nickel electrodeposition from acidic aqueous electrolytic baths prepared by dissolution of metal powder

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