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Suminar Pratapa
Departemen Fisika, Institut Teknologi Sepuluh Nopember, Surabaya 60111 Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Journal : Makara Journal of Science

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X-RAY DIFFRACTION PHASE ANALYSES FOR GRANULATED AND SINTERED CERAMIC MATERIALS Pratapa, Suminar
Makara Journal of Science Vol. 11, No. 2
Publisher : UI Scholars Hub

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Abstract

One basic problematic aspect in x-ray diffraction phase analysis is microabsorption effect which may arise from the size of the crystallite phases. Complication of the problem may intensify in sintered ceramic materials where milling of the samples is not simple. We report the Rietveld x-ray diffraction phase analysis of MgO-a-Al2O3 powder mixtures with phase content ratio of 1:1 by weight and MgO-Y2O3 sintered ceramic composites with Y2O3 contents of 10%, 20% and 30% by weight. The mixtures were pre-sintered at 1000°C for 2 hours and then milled while the composites were sintered at 1550°C for 3 hours. The phase composition analysis was done using Rietica, a non-commercial Rietveld method-based software. Relative and absolute phase compositions were examined and results showed that there was a significant amount of phase composition bias resulted from the examination. For the powder mixture, milling can reduce microabsorption effect and hence the calculation bias. For the ceramic composite where milling is almost impossible, additional of Y2O3 caused smaller crystallite size of MgO, so that composition bias is smaller in composites with higher Y2O3 content. A mathematical model is proposed to provide more acceptable phase composition results.
Co-Authors A. Fuad Abarrul Ikram Achmad Sulhan Fauzi Agus Purwanto Agus Purwanto Agus Purwanto Ahmad Taufiq Allif Rosyidy Hilmi Ana Farisa Arif Hidayat Astuti, Fahmi Badri G.S Bintoro Anang Subagyo Cahyono, Yoyok Chairatul Umamah Darminto Darminto Darminto . Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Dewi Linda Kartika Dianita Wardani Dien Rosma Diana Diky Anggoro, Diky Eddy Yahya Edy Giri Rachman Putra Eko Santoso, Mohammad Herman Ella Agustin Dwi Kiswanti Endarko Endarko Ermawati, Frida U. Fahad Fahad Fahmi Astuti, Fahmi Fauzi, Achmad Sulhan Fauzi, Ah Sulhan Fikriyatul Azizah Su'ud Filza Amalina Firda Siti Nurchosiya Frissa Erina Herdiyanti Fuad D. Muttaqin Gatut Yudoyono Haniffudin Nurdiansah Hariyati Purwaningsih Heny Faisal Herman Jufri Andi, Herman Jufri Hesti Istiqlaliyah Khusnul Umaroh Lila Yuwana Lisma Dian Kartika Sari M. Arief Bustomi M. Diantoro Malik Anjelh Baqiya Masyitatus Daris S Meladia Elok Purbarani mochamad zainul Asrori Mochamad Zainuri Mohammad Herman Eko Santoso Mubarok, Fahmi Muhammad Zainul Asrori Musyarofah Musyarofah Muthmainnah, Melania Suweni Muntini Nurma Sari Nurma Sari, Nurma Nurul Amalia T Nurul Amalia Triyuliana Nurul Hidayat Retno Asih Retno Asih, Retno Riyan Angela S. Bahtiar Saifuddin Santi Puspitasari Simon Sadok Siregar, Simon Sadok Sistin A. Ani Sri Cahyo Wahyono Sriyani Purwaningsih Suasmoro Suasmoro Suasmoro Suasmoro, S. Sudarsono Sudarsono Sudarsono Sukamto, Heru Sunaryono Sunaryono Totok Wianto Triwikantoro Triwikantoro Triwikantoro Umi Maslakah Widya Utama Widya Utama Yanurita Dwihapsari, Yanurita Zaenal Arifin Zainal Arifin Zainuri (DOI: 10.12962/j24604682.v12i2.1331), Mochamad