SINTESIS DAN KARAKTERISASI LAPISAN KOMPOSIT Ni-TiN-AlN/Si₃N₄-Al₂O₃ DENGAN MENGGUNAKAN ELEKTRODEPOSISI ARUS PULSA

RAYYAN ALBIEZA ANFANA THORIQ, . (2025) SINTESIS DAN KARAKTERISASI LAPISAN KOMPOSIT Ni-TiN-AlN/Si₃N₄-Al₂O₃ DENGAN MENGGUNAKAN ELEKTRODEPOSISI ARUS PULSA. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Lapisan komposit berbasis nikel dengan penambahan partikel keramik seperti TiN, AlN, Si₃N₄, dan Al₂O₃ banyak dikembangkan untuk meningkatkan kekerasan, ketahanan aus, serta ketahanan korosi material logam dalam aplikasi teknik dan industri. Penelitian ini bertujuan untuk membentuk dan menganalisis lapisan komposit Ni-TiN-AlN/Si₃N₄-Al₂O₃ yang dihasilkan melalui metode elektrodeposisi arus pulsa dengan variasi rapat arus. Rapat arus yang digunakan sebesar 0,3 mA/mm², 0,4 mA/mm², dan 0,5 mA/mm² selama 30 menit pada suhu 40 °C. Karakterisasi morfologi dan komposisi dilakukan menggunakan Scanning Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM–EDS), sedangkan struktur kristal dan ukuran kristal dianalisis melalui X-Ray Diffraction (XRD). Uji kekerasan dilakukan dengan metode Vickers. Hasil penelitian menunjukkan bahwa peningkatan rapat arus pulsa menghasilkan morfologi permukaan yang lebih halus, kristal yang lebih besar, dan nilai kekerasan yang lebih tinggi. Kekerasan tertinggi tercapai pada rapat arus 0,4 mA/mm² sebesar 1290 kgf/mm², namun menurun kembali pada 0,5 mA/mm². Temuan ini menunjukkan bahwa terdapat batas optimal variasi rapat arus dalam menghasilkan lapisan komposit dengan sifat mekanik terbaik. ***** Nickel-based composite coatings with the addition of ceramic particles such as TiN, AlN, Si₃N₄, and Al₂O₃ are widely developed to improve the hardness, wear resistance, and corrosion resistance of metallic materials for engineering and industrial applications. This study aims to fabricate and analyze Ni-TiN-AlN/Si₃N₄-Al₂O₃ composite coatings produced using the pulse current electrodeposition method with varying current densities. The applied current densities were 0.3 mA/mm², 0.4 mA/mm², and 0.5 mA/mm², with a deposition duration of 30 minutes at 40 °C. The surface morphology and elemental composition were characterized using Scanning Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM–EDS), while the crystal structure and crystallite size were analyzed through X-Ray Diffraction (XRD). Mechanical properties were examined using the Vickers hardness test. The results indicate that increasing the pulse current density leads to a smoother surface morphology, larger crystallite size, and higher hardness. The highest hardness value was achieved at 0.4 mA/mm², reaching 1290 kgf/mm², but decreased at 0.5 mA/mm². These findings suggest that there is an optimal pulse current density range for producing composite coatings with superior mechanical performance.

Item Type: Thesis (Sarjana)
Additional Information: 1). Prof. Dr. Esmar Budi, S.Si., M.T., 2). Dr. Teguh Budi Prayitno, M.Si.
Subjects: Sains > Sains, Ilmu Pengetahuan Alam
Sains > Fisika
Divisions: FMIPA > S1 Fisika
Depositing User: Rayyan Albieza Anfana Thoriq .
Date Deposited: 12 Aug 2025 07:46
Last Modified: 12 Aug 2025 07:46
URI: http://repository.unj.ac.id/id/eprint/60127

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