Gamma Attenuation Behavior of h-BN and h-BN-TiB2 Composites

B. Buyuka, A. Beril Tugrula, A. Okan Addemirb and N. Ayc aIstanbul Technical University, Energy Institute, Nuclear Researches Division, ITU Ayazaga Campus, 34469, Sariyer, Istanbul, Turkey bIstanbul Technical University, Materials Science Engineering Faculty, ITU Ayazaga Campus, 34469, Sariyer, Istanbul, Turkey cAnadolu University, Department of Materials Science and Engineering, Ikı Eylul Campus, 26555, Eskisehir, Turkey

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Hexagonal boron nitride (h-BN) and hexagonal boron nitride-titanium diboride (h-BN-TiB2) composites are advanced materials for high-tech applications. They were investigated against gamma radioisotope sources Cs-137 and Co-60 which have gamma peaks 0.662 MeV for Cs-137, and 1.17 and 1.33 MeV for Co-60. Materials have been produced at 1800°C temperature in argon atmosphere without pressure during 2 h time. Linear and mass attenuation coefficients were calculated for the materials. Gamma transmission technique was used in the experiments. The experimental investigated mass attenuation coefficients of the materials for Cs-137 and Co-60 gamma radioisotope sources were compared with XCOM computer code. For h-BN-TiB2 composites the ratio of TiB2 in the composites is 55% by weight. So gamma attenuation effects of adding TiB2 to h-BN were discussed. It could be said that adding TiB2 to h-BN increases the linear gamma attenuation of the samples.

DOI: 10.12693/APhysPolA.125.420 PACS numbers: 25.20.Dc