Production of iron silicide by mechanochemical method and usability as radar absorbtion material

Radar absorption material (RAM); absorbs a portion of electromagnetic waves transmitted by radar and make it difficult to be detected by radar. Unfortunately, in our country (Turkey), RAM cannot be produced and have to be imported from other countries. If RAM etc. other strategic materials will be produced in our country, we want to be able to use in Turkish Armed Forces with no limitation for place or time and can sale RAM to other countries. Therefore, the production of strategic materials such as RAM, is very important for our country. Because of these reasons, synthesis of iron silicon, which can be used as RAM, was decided. The aims of this thesis are; to produce iron silicide by mechanochemical method by using high energy mill, to mix by proper binder to produce high temperature resistant RAM and research to availability as RAM. Parametric study was performed to optimize production conditions of Iron silicon (Fe3Si). In parametric study, silicon percent is the most important parameter so firstly it was optimized and was found as %17. After that, milling time, annealing temperature and annealing time was optimized respectively. Optimum milling time, annealing temperature and annealing time was identified as 1000 minute, 12000C and 2 hours respectively. The most important portion of RAM is pigment, which absorbs the magnetic waves, was completed by production of Fe3Si. Usage of silicon based resin was decided to produce high temperature resistant paint from produced pigment. Produced paint absorbs -16 dB at 18-40 frequency bands as well as resistant to 5700C, so it was evaluated as high temperature resistant RAM.