LAUSR

Abstract Particles of micron gadolinium oxide core and nano tungsten shell were introduced into aluminum matrix to prepare neutron and gamma ray co shielding materials. The neutron and gamma ray simulation results show that the absorption efficiency for neutron and the half value layers for primary and secondary gamma ray meet the shielding application. Morphology of core-shell structures and composites have been analyzed using scanning electron microscopy. Compared with the original particles reinforced aluminum matrix composite, tensile strength is improved by the core-shell structure particles. The tensile fracture morphology shows that the main reason for the transgranular fracture of composite is that the grain boundary Gd2O3@W particles prevent the crack growth.