PENGARUH KONSENTRASI Ag2S PADA KONDUKTIVITAS BAHAN KOMPOSIT (Ag2S) x (α-Al2O3)1-x (x = 0,1 HINGGA 0,5)
10.17146/jsmi.2012.13.3.4673
Keywords:
Komposit, Composite, Difraksi Sinar-X, X-ray Diffraction, Conductivity, Konduktivitas, Energi Aktivasi, Activation EnergyAbstract
PENGARUH KONSENTRASI Ag2S PADA KONDUKTIVITAS BAHAN KOMPOSIT (Ag2S)x (α-Al2O3)1-x (x = 0,1 HINGGA 0,5). Komposit (Ag2S)x (α-Al2O3)1-x (x = 0,1 hingga 0,5) telah dibuat dengan mencampurkan Ag2S dan α-Al2O3 dengan perbandingan fraksi mol. Campuran dibuat pelet pada tekanan 48,26 x 10^6 N/m2 dengan diameter 1,5 cm dilanjutkan dengan perlakuan panas pada suhu 30°C hingga 300°C selama 5 jam. Hasil karakterisasi fasa dengan difraksi sinar-X menunjukkan fasa Ag2S dan α-Al2O3. Seiring dengan kenaikan fraksi mol Ag2S dalam komposit (Ag2S)x (α-Al2O3)1-x pada ukuran kristal dan konduktivitas mengalami kenaikan, sebaliknya energi aktivasi turun.
ABSTRACT
EFFECT OF Ag2S CONCENTRATION ON CONDUCTIVITY OF (Ag2S)x (-Al2O3)1-x (x = 0.1 to 0.5) COMPOSITE MATERIALS. The composite of (Ag2S)x (α-Al2O3)1-x (x = 0.1 to 0.5) were prepared by mixing Ag2S and α-Al2O3 with appropriate ratio of mole fraction. Mixture of materials was formed as 1.5 cm pellet using 48.26 x 10^6 N/m2 pressure, then heating at temperature from 30°C to 300°C for 5 hours. Phase characterization using x-ray diffraction showed only Ag2S and α-Al2O3 phase. With increasing the mole fraction of Ag2S in composite of (Ag2S)
x (α-Al2O3)1-x the crystall size and conductivity increased while the activation energy decreased.
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