Properties of Dy2O3Li2OB2O3 Glass Used as Radiotherapy

Abstract:

Dy2O3Li2O-B2O3 (DyLB) glasses were prepared by traditional melting method. Properties of the glasses with seven different compositions were investigated by density and hardness measurements. The chemical durability of these glasses in simulated body fluid (SBF) was also studied. Results show that when the Dy2O3 content ranges from 10 to 22% and the Li2O content is 11%,the density increases and the dissolution rate decreases,but their hardness first decreases and then increases.With the increasing of Dy2O3 content,the dissolution rate of all glasses increases with the prolonging of the immersion time.Glass microspheres were made from one of the seven compositions and were testd by a neutron bombardment reactor. The radiation results for DyLB glass microspheres show that the radiated 8Li and 12B are nuclides with short halflife.Only 165Dy nuclide with halflife of 2.4 h can emit β rays, which can be used in radiotherapy in clinic.