Shella Windi Oktivianty, (1117041040) (2016) PENGARUH PENAMBAHAN ALUMINA (Al2O3) 0, 10, DAN 15 WT% TERHADAP KARAKTERISTIK KONDUKTIVITAS LISTRIK DAN MIKROSTRUKTUR CORDIERITE (2MgO.2Al2O3.5SiO2) BERBASIS SILIKA SEKAM PADI. FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM, UNIVERSITAS LAMPUNG.
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
Penelitian ini dilakukan untuk mengetahui pengaruh penambahan alumina terhadap karakteristik fisis, mikrostruktur, dan konduktivitas listrik cordierite. Silika diperoleh dari sekam padi melalui metode sol-gel sedangkan alumina dan magnesium berasal dari Sigma-Aldrich. Cordierite disintesis melalui metode padatan dengan suhu sintering 1200oC. Hasil Pengukuran menunjukan bahwa penambahan alumina mengurangi densitas, menambah porositas, dan menurunkan nilai konduktivitas listrik sampel cordierite. Karakterisasi dengan Scanning Electron Microscopy (SEM) menunjukkan adanya bentuk yang tidak beraturan, pori yang semakin banyak dan aglomerasi yang semakin besar pada sampel dengan penambahan alumina. Hasil Energy Dispersive Spectroscopy (EDS) mengkonfirmasi adanya unsur-unsur penyusun cordierite dan pengotor. Kata kunci: Alumina, cordierite, konduktivitas listrik, mikrostruktur, dan sekam padi. ABSTRAK BAHASA INGGRIS This study was carried out to investigate the effect of alumina on the physical characteristics, microstructure, and electrical conductivity of cordierite. Silica obtained from rice husk through sol-gel method, while alumina and magnesium were obtained from Sigma-Aldrich. Cordierite was synthesized by the solid state method and sintered at 1200°C. The measurement results revealed that the addition of alumina on cordierite reduced density, increased porosity, and decreased electrical conductivity. The Scanning Electron Microscopy (SEM) showed the irregular morphology of all samples. The porosity and aglomeration in cordierite were increased with addition of alumina. Energy Dispersive Spectroscopy (EDS) results confirmed the presence of cordierite constituents and several impurities. Keywords: Alumina, cordierite, electrical conductivity, microstructure, and rice husk.
| Jenis Karya Akhir: | Skripsi |
|---|---|
| Subyek: | > QC Physics |
| Program Studi: | FAKULTAS MIPA > Prodi Fisika |
| Pengguna Deposit: | 6815765 . Digilib |
| Date Deposited: | 28 Jan 2016 08:21 |
| Terakhir diubah: | 28 Jan 2016 08:21 |
| URI: | http://digilib.unila.ac.id/id/eprint/20685 |
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