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All Journal Jurnal Pencerahan Journal of Aceh Physics Society Jurnal Ilmiah Mahasiswa Kelautan Perikanan Unsyiah INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Teori dan Aplikasi Fisika Jurnal Geuthee Jurnal Natural Aceh International Journal of Science and Technology Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Jurnal Pengabdian Bangsa Buletin Pengabdian Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal of Syiah Kuala Dentistry Society
Zulkarnain Jalil
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Journal : INDONESIAN JOURNAL OF APPLIED PHYSICS

 1 
Phase Composition and Magnetic Behaviour of Iron Sand from Syiah Kuala Beach Prepared by Mechanical Alloying Zulkarnain Jalil; Eva Novita Sari; Ismail A B; Erfan Handoko
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): IJAP Volume 04 Issue 01 Year 2014
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i01.1180

Abstract

It has recently been investigated that ball milling can improve the magnetic properties of natural iron sand significantly. In this work, we present the phase composition and magnetic behavior of iron sand from Syiah Kuala Beach, Banda Aceh. Samples were prepared by mechanical alloying method using a Fritsch planetary ball mill for 20 hours. As the results, it was shown by XRD testthat Fe3O4 (magnetite) appears as the majority phase and the magnetic properties observation shown that the magnetization saturation (Ms) and remanent (Br) was decreased with the increasing of the coercivity (Hc).
Pengamatan In-Situ Tekanan dan Temperatur pada Pembentukan MgH2/Ni melalui Metode Reactive Mechanical Alloying (RMA) untuk Aplikasi Material Penyimpan Hidrogen Erfan Handoko; Aditia Pradipta; Bambang Soegijono; Zulkarnain Jalil
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 02 (2014): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i02.4982

Abstract

The observation on reactive mechanical alloying (RMA) process had been done to form MgH2 material with adding Ni nanoparticles as catalist for hydrogen storage material applications. Pressure and temperature of material forming were recorded by microcontroller set for 30 minutes. Mg with adding Ni 5 wt % was milled by High Energy Ball Mill (HEBM) at H2 atmosphere in 1 atm of pressure. The measurement results showed that the pressure had been changed and temperature also changes up to 38oC. This process proves that the alloying betwen Mg and H2 had been formed. The X-ray diffraction pattern identify MgH2 phase. SEM image showed the morphology of MgH2 particles.
Studi Katalis Ni Nano pada Material Penyimpan Hidrogen MgH2 yang Dipreparasi melalui Teknik Mechanical Alloying Nirmala Sari; Adi Rahwanto; Zulkarnain Jalil
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 01 (2016): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v6i01.1788

Abstract

The main obstacle which hinders the application of fuel cell fuels in motor vehicles today is the hydrogen storage tubes. One of the latest efforts in hydrogen storage research is to insert hydrogen in certain metals or called solid state hydrogen storage. Magnesium (Mg) is regarded as one of the material potential candidates absorbing hydrogen, because theoretically, it has the ability to absorb hydrogen in the large quantities of (7.6 wt%). This amount exceeds the minimum limit which is targeted Badan Energi Dunia (IEA), that is equal 5 wt%. However Mg has shortage, namely its kinetic reaction is very slow, it takes time to absorb hydrogen at least 60 minutes with very high operating temperatures (300-400 °C). The aim of this study is to improve the hydrogen desorption temperature hydrogen storage material based MgH2. In this method, milling of material is done in the time of 10 h with the variation of catalyst inserts a for 6wt%, 10wt% and 12 wt%. The results from XRD measurements in mind that the sample was reduced to scale nanocrystal. Phase that appears of the observation of result XRD is MgH2 phase as the main phase, and followed by Ni phase as minor phase. The result of observations with DSC, to the lowest temperature obtained on the sample with a weight of catalyst 12 wt% Ni catalyst that is equal to 376 °C. These results successfully repair pure temperature of Mg-based hydrides.
Co-Authors A Halim ABDUL GANI Abdul Gani Adi Rahwanto Aditia Pradipta Adlim Adlim Ahmad Faisa Akmal NIzar Annisa Zuhra Aris Darmika Munthe Asril Pramurtadi Azizah Azizah Bambang Soegijono Dedi Fazriansyah Putra Eka Juliana Elin Yusibani Endang Lestari Erfan Handoko Eva Novita Sari Fatha Yufari Alfani Fauzi Fauzi Fauzi Fauzi Gebrina Zikra Barizki Harry Handoko Heni Pujiastuti Ichsan Rusydi Imelda Agustina Ireka SALSABILA Irhamni Irhamni Irhamni Ismail A B Ismail Ismail Ivan Almerian Izzuddin Al-Qossam Jul Aidil Kurniawan Fazri M. Hasan Maulinda Maulinda Muhammad Muhammad Muhammad Muhammad Zaki Murzal . Nabila Isvalana Nirmala Sari Nur Aiza Nurul Fadhilah Putri Dyana Harahap Rahmani Rahmani Rahmani Rahmani Razali Thaib Reki Feriyanto Rian Juanda Riqqa Rahmania Sallim Harahap Rizwan Rizwan Shelly Anggi Pratiwi Silvana Rahayu Surya Hafnidar Syahrul Purnawan Syamsul Rizal Thaib Rizwan Thaib Rizwan Tjut Nyak Ghalda Gheitsa Wilma Farisi Windy Mirnawati Zahriah Zahriah Zaraturrahmi Zaraturrahmi Zulfalina Zulfalina Zulfalina Zulfalina Zulfan