Analisis pengaruh penambahan unsur Ag Terhadap Sifat Fisis dan Mekanis paduan Solder Bebas Timbal Sn-0.7Cu-7Zn

Pamurrung, Gabriel Batistuta (2025) Analisis pengaruh penambahan unsur Ag Terhadap Sifat Fisis dan Mekanis paduan Solder Bebas Timbal Sn-0.7Cu-7Zn. Bachelor thesis, Institut Teknologi Kalimantan.

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Abstract

Limbah elektronik (e-waste) tergolong Bahan Beracun dan Berbahaya (B3), dan jumlahnya terus meningkat seiring tingginya konsumsi perangkat elektronik. Salah satu komponen utama e-waste adalah Printed Circuit Board (PCB), yang berfungsi menghubungkan komponen elektronik melalui jalur konduktor. Proses penyolderan pada PCB sangat penting, namun penggunaan solder konvensional Sn- Pb menimbulkan masalah lingkungan dan kesehatan akibat kandungan timbal yang bersifat toksik. Oleh karena itu, dibutuhkan alternatif berupa paduan solder bebas timbal. Penelitian ini menganalisis pengaruh penambahan Ag (0%, 3%, 3,5%, dan 4%) pada paduan Sn–0,7Cu–7Zn terhadap sifat fisis dan mekanik solder. Proses peleburan dilakukan pada temperatur 500 °C selama 30 menit menggunakan Muffle Furnace. Pengujian meliputi kekerasan Vickers, temperatur leleh (DSC), densitas, daya basah (wetability), serta analisis mikrostruktur dan komposisi unsur (SEM dan EDS). Hasil menunjukkan bahwa penambahan Ag 3–4% meningkatkan performa paduan secara signifikan. Terbentuknya fasa ε-AgZn₃ menggantikan γ-Cu₅Zn₈, menyempitkan rentang suhu leleh (dari 7,91 °C menjadi 7,08 °C) dan menaikkan titik leleh (dari 215,35 °C menjadi 227,96 °C). Daya basah meningkat dari 4,61 mm² menjadi 6,69 mm², dan densitas menjadi lebih stabil. Kekerasan Vickers juga meningkat, dengan nilai tertinggi 16,36 Hv pada penambahan 4% Ag akibat penguatan mikrostruktur oleh presipitat AgZn₃.

Item Type:	Thesis (Bachelor)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Jurusan Ilmu Kebumian dan Lingkungan > Teknik Material dan Metalurgi
Depositing User:	Gabriel Batistuta Pamurrung
Date Deposited:	11 Jul 2025 06:38
Last Modified:	11 Jul 2025 06:38
URI:	http://repository.itk.ac.id/id/eprint/24103

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