Effect of Elements (Mo, Zr) on a Copper-Based Alloy to Attenuate X-Rays

Abstract

Copper-based alloys were prepared by powder metallurgy technique (Cu +5%Al +3%Ti) to measure the attenuation coefficients of X-rays for a range of operating voltages (20,25,30,35) kV with variable thickness (0.2 - 0.6)Cm at constant compressive pressure (600Mpa) according to the order (A1, A2, A3, A4, A5), variable percentages of molybdenum and zirconium (X=1,2,3,4,5) were added separately to the allo  (Cu 92-x + 5%Al +3%Ti + Mo x) in the order (B1,B2,B3,B4,B5), and allo  (Cu92-x + 5%Al + 3%Ti + Zr x) in the order (C1,C2,C3,C4,C5) with a thickness of (0.6 Cm) and a pressure of (600Mpa), all samples were sintered at a temperature of (900 0C) for a period of (4 hours).The results show that at an operating voltage of (20Kv), the linear and mass attenuation coefficients increased by (47%) (61.8%), the Hardness increased by (30%), and the porosity decreased by (13.3%) when comparing the results of Alloys (A1) with (A5). Results The attenuation coefficients increased when adding the molybdenum element by (31.3%) (30%), the Hardness increased by (22.3%), and the porosity decreased by (33.5%) when comparing the results of Alloys (B1) with (B5).The decrease in the attenuation coefficients when zirconium was added in proportions (28.5%) (25.6%), and the Hardness decreased by (11.4%). The porosity increased by (15%) when comparing the results of Alloys (C1) with (C5). The attenuation coefficient is inversely proportional to the operating voltage. It decreased by (29.4%) when comparing the results of voltages (20Kv) with (35Kv) for alloy (B5) and by (36%) for alloy (C5).