Investigation of the physical properties of ceramic additive composite materials produced by vacuum infusion method

In this study, ceramic materials, such as Barium Titanete (BaTiO3), doped with Gd, Zn, B, Mn, Yttiria zirconate (YZr2O7) dobed with La, Sr, Bi, Co, Bismuth ferrite (BiFeO3) doped with Mn, and Barium zirconate (BaZrO3) doped with Co, Bi and Sr; externally prepared MnYO3 solution which are known to have good radar absorbing characteristics were prepared mechnically as mixed and unmixed solutions at %2, %3, %5, %10 ve %15 fractions in an epoxy matrix by sol-gel method. The obtained doped epoxy vacuum infusion method was used to infuse 10x10 cm size 4x biaxial, mesh angle = 0/90, density (gr / m²) = 800 fiber samples. In addition, solid epoxy samples of each doped epoxy are prepared for measurement in equal dimensions. The radar absorbency and hardness of these samples were measured. According to these results, 2% Co0.5La0.5YZr2O7 added composite sample had a radar absorption of 17% at 3.5 GHz. 5% Mn0.5Bi0.5FeO3 added composite sample had a radar absorption of 6.5% at 6.5 Ghz, 5% MnYO3 added sample. It has been determined that the sample has a radar absorption rate of 44% at 6.5 Ghz, the sample with 10% Sr0.5La0.5La0.5YZr2O7 additive has 43% radar absorption at 5 Ghz and the sample with 5% BaZrO3 additive has a radar absorption of 5% at 5 Ghz. The results of the tests carried out in different samples showed that the best radar absorber at low frequency was observed at 5 GHz frequency in the Sr0.5La0.5YZr2O7 doped sample. All radar absorbances were measured according to the ratio of the hardness values of the measured samples.