Boron carbide as a target for the SPES project

Corradetti, S.; Carturan, S.; Biasetto, Lisa; Andrighetto, A.; Colombo, Paolo

doi:10.1016/j.jnucmat.2012.08.024

Cited by 17 publications

(8 citation statements)

References 42 publications

(51 reference statements)

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“…The broad peak observed at 3230 cm −1 (Fig. 1(ii a)) is due to the presence of -OH groups in CA and ethylene glycol derivatives [13][14][15][16][17]21,[23][24][25], which is much weaker than that of starting citric acid and ethylene glycol. This result suggests the consumption of OH group by esterification and also the existence of unreacted OH groups.…”

Section: Resultsmentioning

confidence: 95%

“…An alternative to above processes is the utilization of polymer precursors, e.g. sucrose and glucose, glycerin, polyols, and phenolic resin, as low-temperature synthetic route to B 4 C facilitated by improving the homogeneity and dispersibility of B 2 O 3 and carbon [11][12][13][14][15][16][17][18][19][20][21][22]. Nevertheless, the disadvantage of using organic precursors is the presence of residual carbon in the products synthesized at lower temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the disadvantage of using organic precursors is the presence of residual carbon in the products synthesized at lower temperatures. Citric acid (CA) has been employed to produce B 4 C with significant residual carbon at 1500-1900 • C [15][16][17][18]. Recently, it is indicated that the addition of tartaric acid to boric acid (BA)-glycerin ameliorates the dispersion of B 2 O 3 /C [21].…”

Section: Introductionmentioning

confidence: 99%

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Ethylene glycol assisted low-temperature synthesis of boron carbide powder from borate citrate precursors

Rafi-Ud-Din

Zahid

Asghar

et al. 2014

Journal of Asian Ceramic Societies

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a b s t r a c t B 4 C powders were synthesized by carbothermal reduction of ethylene glycol (EG) added borate citrate precursors, and effects of EG additions (0-50 mol% based on citric acid) on the morphologies and yields of synthesized B 4 C powders were investigated. The conditions most suitable for the preparation of precursor were optimized and optimum temperature for precursor formation was 650 • C. EG additions facilitated low-temperature synthesis of B 4 C at 1350 • C, which was around 100-300 • C lower temperature compared to that without EG additions. The lowering of synthesis temperature was ascribed to the enlargement of interfacial area caused by superior homogeneity and dispersibility of precursors enabling the diffusion of reacting species facile. The 20% EG addition was optimal with free residual carbon lowered to 4%. For smaller EG additions, the polyhedral and rod-like particles of synthesized product co-existed. With higher EG additions, the morphology of synthesized product was transformed into needle and blade-like structure.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ethylene glycol assisted low-temperature synthesis of boron carbide powder from borate citrate precursors

Rafi-Ud-Din

Zahid

Asghar

et al. 2014

Journal of Asian Ceramic Societies

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“…Porous boron carbide has been proposed recently as a target for the production of p-rich Be beams, in particular 7 Be, to be used for astrophysics experiments. Research carried out at SPES demonstrated the possibility to obtain porous B 4 C based discs by means of two different techniques, both based on the use of boric acid as a boron source, reacting it with proper carbon sources [7].…”

Section: Other Materialsmentioning

confidence: 99%

“…Research carried out at SPES demonstrated the possibility to obtain porous B 4 C based discs by means of two different techniques, both based on the use of boric acid as a boron source, reacting it with proper carbon sources [7]. Lanthanum carbide has been extensively used in past years [8] as a test material to develop devices and techniques for the obtainment of carbide targets by means of reaction:…”

Section: Other Materialsmentioning

confidence: 99%

Research and development on materials for the SPES target

Corradetti

Andrighetto

Manzolaro

et al. 2014

EPJ Web of Conferences

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Abstract.The SPES project at INFN-LNL (Istituto Nazionale di Fisica Nucleare -Laboratori Nazionali di Legnaro) is focused on the production of radioactive ion beams. The core of the SPES facility is constituted by the target, which will be irradiated with a 40 MeV, 200 µA proton beam in order to produce radioactive species. In order to efficiently produce and release isotopes, the material constituting the target should be able to work under extreme conditions (high vacuum and temperatures up to 2000 • C). Both neutronrich and proton-rich isotopes will be produced; in the first case, carbon dispersed uranium carbide (UC x ) will be used as a target, whereas to produce p-rich isotopes, several types of targets will have to be irradiated. The synthesis and characterization of different types of material will be reported. Moreover, the results of irradiation and isotopes release tests on different uranium carbide target prototypes will be discussed.

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