Pengaruh Penambahan 10at.%Ni dan Waktu Milling pada Paduan MgAl Hasil Mechanical Alloying dan Sintering

Ardi Kurniawan, Hariyati Purwaningsih
Submission Date: 2013-02-04 14:25:22
Accepted Date: 2013-03-01 00:00:00

Abstract


Paduan magnesium banyak dikembangkan sebagai Hydrogen Storage Materials. Penambahan unsur Al dan Ni dalam paduan magnesium berguna untuk mengurangi energi ketika proses hidrogenasi berlangsung. Sintesa paduan magnesium dilakukan dengan metode mechanical alloying menggunakan Modification Horizontal Ball Mill. Paduan Mg-Al akan didoping dengan menambahkan 10at.% Ni menggunakan variasi waktu milling selama 2, 5, 10, dan 20 jam. Paduan yang terbentuk hasil milling akan dilakukan proses sintering pada temperatur 6000C. Pengujian BET, Sieving, XRD, SEM/EDX, dan DSC/TGA dilakukan untuk menganalisa paduan yang terbentuk. Hasil pengujian menunjukkan bahwa variasi waktu milling selama 10 jam dengan temperatur sintering 6000C mampu membentuk paduan Mg-Al-Ni berupa larutan padat Mg, AlNi dan Mg3AlNi2.


Keywords


Mg; Al; Ni; milling time; sintering; mechanical alloying; hydrogen storage

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