SEMBIRING, MAULANA (2025) ANALISIS OKSIDASI PADUAN Al-FeCr-SiC YANG DIPERSIAPKAN DENGAN PENGGILINGAN MENGGUNAKAN PLANETARY BALL MILLING. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
Aluminum-based materials are widely used in modern industries due to their lightweight, corrosion resistance, and stability at high temperatures. However, one of the main challenges is their oxidation resistance when exposed to extreme conditions, such as in automotive systems and high-pressure industrial environments. To improve oxidation resistance, aluminum alloys have been developed by adding ferrochromium (FeCr) and reinforcing silicon carbide (SiC) particles. This study aims to evaluate the oxidation resistance and phase evolution in Al–FeCr–SiC alloys processed using the high-energy mechanical alloying method (Planetary Ball Mill), followed by sintering at 600°C, 700°C, and 800°C. Cyclic oxidation tests were conducted at 550°C for a total duration of 100 hours, and mass changes were analyzed to determine the oxidation rate. Phase characterization of the oxidized samples was carried out using X-Ray Diffraction (XRD). The results showed that the sample sintered at 800°C exhibited the lowest specific weight gain, 0.000575 g/mm², indicating the best oxidation resistance. such as Al2O3, AlFe3, Cr, Fe, and SiC were identified, with Al2O3 playing a dominant role in slowing down oxygen diffusion into the material. Thus, increasing the sintering temperature enhances the microstructural stability and oxidation resistance of the material, making this alloy a promising candidate for high- temperature engineering applications. Keywords: Al-FeCr-SiC, cyclic oxidation, XRD, oxide phase, oxidation resistance. Material berbasis aluminium banyak digunakan dalam industri modern karena sifatnya yang ringan, tahan korosi, dan stabil pada suhu tinggi. Namun, tantangan terbesar adalah ketahanan terhadap oksidasi saat digunakan dalam kondisi ekstrem, seperti pada sistem otomotif dan industri bertekanan tinggi. Untuk meningkatkan sifat ketahanan oksidasi, dikembangkan paduan aluminium dengan penambahan unsur ferokromium (FeCr) dan partikel penguat silikon karbida (SiC). Penelitian ini bertujuan mengevaluasi ketahanan oksidasi dan evolusi fasa yang terjadi pada paduan Al–FeCr–SiC yang diproses menggunakan metode pemaduan mekanik berenergi tinggi (Planetary Ball Mill), kemudian disinter pada suhu 600°C, 700°C, dan 800°C. Uji oksidasi dilakukan secara siklik pada suhu 550°C selama 100 jam, dan perubahan massa dianalisis untuk menentukan laju oksidasi. Selanjutnya, karakterisasi fasa hasil oksidasi dilakukan menggunakan X-Ray Diffraction (XRD). Hasil menunjukkan bahwa sampel sintering pada suhu 800°C memiliki kenaikan berat spesifik paling rendah, yaitu 0,000575 g/mm², menandakan ketahanan oksidasi terbaik. Fasa-fasa seperti Al2O3, AlFe3, Cr, Fe, dan SiC teridentifikasi, dengan Al₂ O₃ berperan dominan dalam memperlambat difusi oksigen ke dalam material. Dengan demikian, peningkatan suhu sintering mampu menghasilkan struktur mikro yang lebih stabil dan tahan terhadap oksidasi, menjadikan paduan ini potensial untuk aplikasi suhu tinggi di bidang teknik. Kata Kunci: Al–FeCr–SiC, oksidasi siklik,, XRD, fasa oksida, ketahanan oksidasi.
| Item Type: | Thesis (S1) |
|---|---|
| Call Number CD: | FT/MSN. 25 066 |
| NIM/NIDN Creators: | 41321010009 |
| Uncontrolled Keywords: | Al–FeCr–SiC, oksidasi siklik,, XRD, fasa oksida, ketahanan oksidasi. |
| Subjects: | 500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 550 Earth Sciences/Ilmu tentang Bumi > 553 Economic Geology/Geologi Ekonomis > 553.2 Carbonaceous Materials/Material Karbon 500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 550 Earth Sciences/Ilmu tentang Bumi > 553 Economic Geology/Geologi Ekonomis > 553.3 Iron/Besi 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 25 Aug 2025 08:33 |
| Last Modified: | 25 Aug 2025 08:33 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/97092 |
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