FAUZIAH, ANNISA NUR (2024) Pengaruh Temperatur dan Waktu Hidrothermal BaFe12O19@MoS2 Core-Shell Composite Terhadap Nilai Reflection Loss. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
Currently, technological development is very rapid, there are many innovations and inventions in all aspects of technology that aim to make human life easier. According to data from the ministry of national defense (kemenham), anti-radar coating (non-ferrous) technology research is currently being developed at the national defense agency (brin) for later application to the tni's defense equipment. Barium hexaferrite is an example of technological developments in the field of anti-radar materials because it is very suitable for military applications as a microwave absorber. The nature of microwave absorption in barium hexaferrite can be seen from the reflection loss value. Barium hexaferrite has a hexagonal crystal structure. Barium hexaferrite has good chemical stability and is relatively cheap and easy to produce. This magnetic material has very strong mechanical properties and does not corrode easily. In this research, MoS2 was used as reinforcement in the matrix of the barium hexaferrite composite system. To make the core-shell composite structure BaFe12@MoS2, the hydrothermal synthesis method was carried out using variations in temperature and holding time for the hydrothermal process. Variations in temperature and hydrothermal holding time influence the formation of the core of the core-shell composite in BaFe12@MoS2. Temperature variations (160⁰c, 180⁰c, 200⁰c, 220⁰c) 18 hours and variations in holding time 220⁰c (14 hours, 16 hours, 18 hours and 20 hours) which aims to determine the effect of temperature and hydrothermal resistance time on the nanoflowers formed and their relationship to the reflection value loss. The lowest reflection loss value was -35.41db at a frequency of 17.37, the highest temperature variation was 220oc with a hydrothermal process holding time of 18 hours.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Pada saat ini perkembangan teknologi sangatlah pesat, banyak inovasi dan invensi dalam segala aspek teknologi yang bertujuan untuk memudahkan kehidupan manusia. Menurut data Kementrian Pertahanan Nasional (Kemenham) penelitian teknologi coating (nonferro) anti radar saat ini sedang dikembangkan di Badan Pertahanan Nasional (BRIN) untuk nantinya diaplikasikan pada Alutsista TNI. Barium hexaferrite merupakan salah satu contoh dari perkembangan teknologi di bidang material anti radar dikarenakan sangat sesuai untuk aplikasi militer sebagai penyerapan gelombang mikro. Sifat penyerapan gelombang mikro pada barium hexaferrite dapat dilihat dari nilai reflection loss. Barium hexaferrite memiliki struktur kristal hexagonal. Barium hexaferrite mempunyai kestabilan kimia yang bagus dan relatif murah dan kemudahan dalam produksi. Material magnet tersebut memiliki sifat mekanik yang sangat kuat dan tidak mudah terkorosi. Pada penelitian ini digunakan MoS2 sebagai reinforce pada matrix dari sistem komposit barium hexaferrite. Untuk membuat struktur core-shell composite BaFe12O19@MoS2 dilakukan menggunakan metode sintesis hidrotermal dengan variasi temperature dan waktu tahan proses hidrotermal. Variasi temperatur dan waktu tahan hidrotermal berpengaruh pada pembentukan inti dari core-shell composite pada BaFe12O19@MoS2. Variasi temperatur (160⁰C, 180⁰C, 200⁰C, 220⁰C) 18 jam dan variasi waktu tahan 220⁰C (14 Jam, 16 Jam, 18 Jam dan 20 Jam) yang bertujuan untuk mengetahui pengaruh temperatur dan waktu tahan hidrotermal pada nanoflower yang terbentuk dan hubungannya terhadap nilai reflection loss. Nilai reflection loss terendah didapatkan sebesar -35,41dB pada frekuensi 17,37 variasi temperatur tertinggi yaitu 220oC dengan waktu tahan proses hidrotermal selama 18 jam. | |||||||||
| Subjects: | T Technology > T Technology (General) T Technology > TN Mining engineering. Metallurgy |
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| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 27201-Jurusan Teknik Metalurgi |
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| Depositing User: | Mrs Annisa Nur Fauziah | |||||||||
| Date Deposited: | 03 Jan 2024 10:38 | |||||||||
| Last Modified: | 15 Jan 2024 15:01 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/31852 |
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