Pengaruh Variasi Lama Waktu Hidrogenasi terhadap Pembentukan Metal Hidrida pada Paduan MgAl

Abstract

Paduan berbasis magnesium (Mg) merupakan salah satu paduan yang dapat digunakan sebagai Hydrogen Storage Material. Pemaduan Magnesium dengan aluminium bertujuan untuk menurunkan energi aktivasi proses reaksi hidrogen dengan paduan Mg-Al. Paduan Mg-Al dengan komposisi Mg-42 at.% Al disintesa melalui proses milling dengan waktu 40 jam yang menghasilkan solid solution MgAl. Serbuk hasil milling disintering dengan temperatur 600^oC dengan holding time selama 2 jam dalam lingkungan argon sehingga terbentuk fase Mg₁₇Al₁₂. Serbuk Mg₁₇Al₁₂ kemudian dihidrogenasi pada tekanan 1MPa, temperatur 400⁰C dengan variasi lama waktu hidrogenasi 1, 2 , dan 3 jam. Analisis difraksi sinar-X mengidentifikasi adanya faseMgH₂ dengan perkiraan % wt sebesar  1.242%, 3.082% dan 4.2% setelah dilakukan proses hidrogenasi selama 1 , 2 dan 3 jam.

CC Licencing

Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).