Characterization of boron carbide particles and its shielding behavior against neutron radiation

Developments in nuclear technology in the last century have lead to the use of radiation in different areas of human activity. These are not just the energetics but also food, agriculture, medicine, industry and science. Thus, radiation has become an inevitable phenomenon in our lives. Since we cannot isolate radiation from our life, the radiation protection methods should be available. As alternatives to conventional radiation prevention methods, such as lead and heavy concrete shielding, more functional materials need to become the focus of research. The development of the least harmful to the environment, easily applicable, flexible radiation shields has become very important. In this study, silicon matrix composite panels, doped with different ratios of barite and boron carbide, were produced and characterized by optical and scanning electron microscopy (SEM). Gamma and neutron radiation shielding properties of these materials were investigated. The results have been compared with the lead as the standard shielding material.

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“…Boron carbide in the rubber is studied in the nuclear energy field. Celli et al studied boron carbide in epoxy resin, elastomer [21,22].…”

Section: Introductionmentioning

confidence: 99%

“…Effect of addition of boron to different concretes has been studied by many investigations. Boron carbide (B 4 C) is an advanced ceramic material, used for neutron absorption in nuclear applications [11,17,20,21]. Boron carbide in the rubber is studied in the nuclear energy field.…”

Section: Introductionmentioning

confidence: 99%

Production of Barite and Boroncarbide Doped Radiation Shielding Polymer Composite Panels

Evcin

Bezir

et al. 2017

Acta Phys. Pol. A

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“…In these products, Kotoite [Mg3(BO3)2] and MgB 2 (MgB4O7) were the major phases in the products which synthesized at the ratio of MgO:H3BO3 3:2 and 1:1, respectively. FT-IR and Raman results of products showed that the peaks of synthesized materials were suitable with the characteristic peaks of non-hydrate boron minerals in literature 6,15,17 . The characters of synthesized material were less affected from changing of experimental parameters.…”

Section: Resultsmentioning

confidence: 64%

“…In similar way, lower boron contents of the products can be explained with the excess magnesium oxide and insufficient conversion to magnesium borate structure at the molar ratio of 2:1. Neutron permeability: Neutron permeability decreases with increasing thickness of the material 15 . Neutron permeability and macroscopic cross section values of the synthesized magnesium borate minerals are given in Table-4.…”

Section: Resultsmentioning

confidence: 99%

Neutron Permeation Properties and Characterization of Synthesized Non-Hydrated Magnesium Borate Minerals

Kıpçak¹,

Derun²,

Şenberber³

et al. 2014

Asian J. Chem.

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Boron minerals, which are abundantly present in Turkey holds about 72 % of their reserves with the largest share, have been investigated for decades all over the world 1. Metal borates, which are a member of notable ceramic materials, are useful additives in industry due to their features such as great mechanical properties, good chemical resistance and low density, as well as low thermal expansion coefficient. Magnesium borate minerals, which are a sub-class of metal borate minerals, have excellent potential in the development of thermoluminescence phosphor materials, detergents composition, energy conversion and storage systems, production of superconducting materials, whisker-reinforced composites and reducing friction additives. At the same time, they can be used in the production of-materials against-neutron and γ-radiation due to their high content of boron 2-5. Production of non-hydrated magnesium borates has been an interesting topic for a decade. Dosler et al. 2 synthesized single-phase Mg 3 B 2 O 6 and Mg 2 B 2 O 5 ceramics by solid-state reaction techniques by using the raw materials of MgO and B 2 O 3. At the end of the experiments, it was seen that Mg 2 B 2 O 5 and Mg 3 B 2 O 6 were formed at temperatures ranging between 1250-1280 °C, respectively 2. In another study on thermal

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“…B 4 C is the third hardest material and shows high Young's modulus, high melting point (2450 ∘ C without decomposing), excellent chemical resistance, very low density (2.52 g/cm 3 ), low stiffness, excellent thermoelectric properties, and good cross section absorption of thermal neutrons. These properties make it suitable for numerous applications from wear resistant components and cutting tools to high temperature thermocouples and neutron absorbers [1][2][3][4][5]. Boron carbide can also be used as a precursor or reduction agent to produce boron nitride and transition-metal diborides (TiB 2 , ZrB 2 , HfB 2 , and CrB 2 ) [6][7][8][9][10] and recently has been applied in gamma ray scintillator and neutron detectors and as high efficiency thermoelectric material [11,12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nanocrystalline Boron Carbide by Direct Microwave Carbothermal Reduction of Boric Acid

Gunnewiek

Souto

Kiminami

2017

Journal of Nanomaterials

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The excellent physical and chemical properties of boron carbide make it suitable for many applications. However, its synthesis requires a large amount of energy and is time-consuming. Microwave carbothermal reduction is a fast technique for producing well crystallized equiaxial boron carbide nanoparticles of about 50 nm and very few amounts of elongated nanoparticles were also synthesized. They presented an average length of 82 nm and a high aspect ratio (5.5). The total reaction time was only 20 minutes, which disfavor the growing process, leading to the synthesis of nanoparticles. Microwave-assisted synthesis leaded to producing boron-rich boron carbide. Increasing the forward power increases the boron content and enhances the efficiency of the reaction, resulting in better crystallized boron carbide.

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Characterization of boron carbide particles and its shielding behavior against neutron radiation

Cited by 56 publications

References 11 publications

Production of Barite and Boroncarbide Doped Radiation Shielding Polymer Composite Panels

Production of Barite and Boroncarbide Doped Radiation Shielding Polymer Composite Panels

Neutron Permeation Properties and Characterization of Synthesized Non-Hydrated Magnesium Borate Minerals

Synthesis of Nanocrystalline Boron Carbide by Direct Microwave Carbothermal Reduction of Boric Acid

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