Wollastonite Based-Chemically Bonded Phosphate Ceramics with Lead Oxide Contents under Gamma Irradiation
The shielding properties to gamma rays as well as the effect of lead concentration incorporated into Chemically Bonded Phosphate Ceramics (CBPCs) composites are presented. The Wollastonite-based CBPC was fabricated by mixing a patented aqueous phosphoric acid formulation with Wollastonite powder. CBPC has been proved to be good structural material, with excellent thermal resistant properties, and research already showed their potential for radiation shielding applications. Wollastonite-based CBPC is a composite material itself with several crystalline and amorphous phases. Irradiation experiments were conducted on different Wollastonite-based CBPCs with lead oxide. Radiation shielding potential, attenuation coefficients in a broad range of energies pertinent to engineering applications and density experiments showing the effect of the PbO additions (to improve gamma shielding capabilities) are also presented. Microstructure was identified by using scanning electron microscopy and X-ray diffraction. © 2011 Elsevier B.V. All rights reserved.
H. A. Colorado et al., "Wollastonite Based-Chemically Bonded Phosphate Ceramics with Lead Oxide Contents under Gamma Irradiation," Journal of Nuclear Materials, Elsevier, Jan 2012.
The definitive version is available at http://dx.doi.org/10.1016/j.jnucmat.2011.08.043
Mining and Nuclear Engineering
Article - Conference proceedings
© 2012 Elsevier, All rights reserved.