SETIAWAN, ARIP (2025) PENGARUH WAKTU MILLING TERHADAP UKURAN PARTIKEL DAN FASE KRISTALIN PADA PADUAN Al50(FeCr)45SiC5 YANG DIPROSES DENGAN PLANETARY BALL MILLING. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
This study aims to examine the evolution of particle size and crystal phase in Al–FeCr– SiC composite powders synthesised using the mechanical blending method with planetary ball milling (PBM). The milling times used were 0, 3, 6, 10, 15, and 20 hours, with a ball-to-powder ratio (BPR) of 6.67:1. Characterisation was performed using a Particle Size Analyzer (PSA) to analyse particle size distribution, as well as X-ray Diffraction (XRD) to identify crystalline phases, intensity changes, and crystallite size. PSA results showed a significant decrease in particle size after 3 hours of milling. However, as milling time increased, cold welding occurred, causing agglomeration and resulting in an increase in particle size. Meanwhile, the XRD results showed that no new phases were formed during the milling process. The main phases such as Al, Fe, Cr, and SiC remained detectable, but their intensities changed significantly. The Al peak became more dominant, while the Fe, Cr, and SiC peaks experienced a decrease in intensity, accompanied by peak broadening, indicating a decrease in crystallite size, increased microstrain, and accumulation of crystal defects. Thus, it can be concluded that the planetary ball milling process effectively alters particle size and internal crystal characteristics without forming new phases, and holds great potential for the development of advanced materials in the field of mechanical engineering. Keywords: Al-FeCr-SiC, Planetary ball Milling, Particle Size, X-Ray Diffraction Mechanical Alloying, Phase. Penelitian ini bertujuan untuk mengkaji evolusi ukuran partikel dan fase kristal pada serbuk paduan Al50(FeCr)45SiC5 yang disintesis menggunakan metode pemaduan mekanik dengan planetary ball milling (PBM). Variasi waktu milling yang digunakan adalah 0, 3, 6, 10, 15, dan 20 jam, dengan ball to powder ratio (BPR) sebesar 6,67:1. Karakterisasi dilakukan menggunakan Particle Size Analyzer (PSA) untuk menganalisis distribusi ukuran partikel, serta X-ray Diffraction (XRD) untuk mengidentifikasi fase kristal, perubahan intensitas, dan ukuran kristalit. Hasil PSA menunjukkan penurunan ukuran partikel setelah 3 jam milling secara signifikan. Namun, seiring bertambahnya waktu milling terjadi fenomena cold welding sehingga menyebabkan aglomerasi yang membuat ukuran partikel kembali meningkat. Sementara itu, hasil XRD menunjukkan bahwa tidak terbentuk fase baru selama proses milling. Fase utama seperti Al, Fe, Cr, dan SiC tetap terdeteksi, namun intensitasnya berubah secara signifikan. Puncak Al menjadi lebih dominan, sedangkan puncak Fe, Cr, dan SiC mengalami penurunan intensitas, disertai pelebaran puncak yang mengindikasikan penurunan ukuran kristalit, peningkatan strain mikro, dan akumulasi cacat kristal. Dengan demikian, dapat disimpulkan bahwa proses planetary ball milling secara efektif mengubah ukuran partikel dan karakteristik kristal internal tanpa membentuk fase baru, serta memiliki potensi besar untuk pengembangan material maju dalam bidang teknik mesin. Kata kunci: Al–FeCr–SiC, Planetary ball Milling, Ukuran Partikel, X-ray Diffraction, Pemaduan Mekanik, Fase.
| Item Type: | Thesis (S1) |
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| Call Number CD: | FT/MSN. 25 056 |
| NIM/NIDN Creators: | 41321010012 |
| Uncontrolled Keywords: | Al–FeCr–SiC, Planetary ball Milling, Ukuran Partikel, X-ray Diffraction, Pemaduan Mekanik, Fase. |
| Subjects: | 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 600 Technology/Teknologi > 660 Chemical Engineering and Related Technologies/Teknologi Kimia dan Ilmu yang Berkaitan > 669 Metallurgy/Metal, Metalurgi > 669.7 Nonferrous Metals/Metalurgi Logam Bukan Besi |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 21 Aug 2025 02:37 |
| Last Modified: | 21 Aug 2025 02:37 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/96928 |
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