Semiconductor Physics, Quantum Electronics & Optoelectronics. 2013. V. 16, N 2. P. 162-165.
DOI: https://doi.org/10.15407/spqeo16.02.162/

                                                                 

Effect of neutron irradiation on non-equilibrium HfB2-B4C composites
I.M. Totsky1, V.V. Shynkarenko2, O.Yu. Popov1, V.A. Makara1

1Taras Shevchenko Kyiv National University, Department of Physics 4, prospect Hlushkova, 03680 Kyiv, Ukraine
2V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine 41, prospect Nauky, 03680 Kyiv, Ukraine Phone: 38(044) 525-61-82; e-mail: shynkarenko@isp.kiev.ua

Abstract. We studied the effect of neutron irradiation on composite material HfC-HfB2-C made using rapid reactive hot pressing technology. The histograms of microhardness and results of X-ray phase analysis, obtained both before and after neutron and electron irradiation of the samples, were considered. It was found that secondary electrons make a considerable contribution at low-fluence (~1014 neutron/cm2) neutron irradiation. A fluence range was determined at which reduction of composite material microhardness is observed.

Keywords: composite materials, HfB2, B4C, neutron irradiation, small-dose effect, rapid reactive hot-pressed sintering.

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