نویسندگان
1 دانشگاه جامع امام حسین )ع(، دانشکده فنی مهندسی، گروه مهندسی مواد، تهران، ایران.
2 دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، باشگاه پژوهشگران جوان و نخبگان، تهران، ایران.
چکیده
در این مقاله با هدف بررسی رفتار جذب امواج رادار توسط پودر مغناطیسی هگزافریت باریم آلاییده شده، کامپوزیت‌هایی حاوی این پودر با درصد وزنی مختلف (30، 40 و 50 درصد وزنی) در زمینه رزین اپوکسی تهیه شد. آنالیزهای پراش اشعه ایکس (XRD)، مغناطیس‌سنج نمونه مرتعش (VSM) و تجزیه و تحلیل شبکه بردار (VNA) به ترتیب به منظور بررسی فازی، مغناطیسی و جذب امواج مایکرویو انجام شد. طبق نتایج ترکیب هگزافریت باریم به همراه مقدار ناچیزی فاز غیرمغناطیسی هماتیت تشکیل گردید. نتایج VSM حاکی از کاهش مقادیر مغناطش اشباع (Ms) و نیروی وادارندگی (Hc) در تمامی نمونه‌ها بود و کمترین میزان مغناطش اشباع (emu/g 14/18) و نیروی وادارندگی (Oe 118) در نمونه حاوی یون قلع مشاهده شد. طبق نتایج VNA بیشترین میزان جذب در حالت استفاده از 50 درصد وزنی پودر در زمینه رزینی و در صورت استفاده از نمونه با ترکیب BaZn0.6Zr0.3Sn0.3Fe10.8O19 در فرکانس GHz 1/11 به میزان dB 16/3- حاصل گردید.
کلیدواژه‌ها
عنوان مقاله [English]
Investigation the Radar Absorption Behavior of Polymer Matrix Composites with Doped Barium Hexaferrite Particles
نویسندگان [English]
- Seyyed Salman Seyyed Afghahi 1
- Mojtaba Jafarian 2
- Mohsen Salehi 2
1 Department of Materials sciencend Engineering, Imam Hossein University, Tehran, Iran.
2 Young Researchers and Elites club, Science and Research Branch, Islamic Azad University, Tehran, Iran.
چکیده [English]
In this paper with the aim of investigating the radar absorption behavior of doped barium hexaferrite, composites contain this powder with different weight percent in resin epoxy matrix were prepared. X-ray diffraction analysis (XRD), Vibration sample magnetometer (VSM) and Vector network analysis (VNA) were performed in order to evaluate phase, magnetic properties and microwave absorption properties. According to the results, barium hexaferrite with negligibility amount of non-magnetic hematite phase were was formed. VSM results, representing the reduction of saturation magnetization (Ms) and coercive force (Hc) values in all samples, and the lowest value of saturation magnetization (18.14 emu/g) and coercive force (118 Oe) corresponded to the sample that contain tin ion. According to the VNA results, the maximum absorption is achieved when 50 wt.% of powder is used in resin matrix which was related to the sample with the composition of BaZn0.6Zr0.3Sn0.3Fe10.8O19 at the frequency of 11.1 GHz with -16.3 dB.
کلیدواژه‌ها [English]
- Barium Hexaferrite
- Magnetic properties
- Radar waves absorption
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