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All Journal Prosiding Seminar Biologi Jurnal Sains dan Seni ITS Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Sains Materi Indonesia Jurnal Neutrino : jurnal fisika dan aplikasinya Berkala Fisika Indonesia : Jurnal Ilmiah Fisika, Pembelajaran dan Aplikasinya Matematika dan Sains JFA (Jurnal Fisika dan Aplikasinya) PENA SAINS Indonesian Journal of Chemistry Indonesian Physical Review Sewagati
Triwikantoro Triwikantoro
Departemen Fisika, Institut Teknologi Sepuluh Nopember, Surabaya 60111 Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Journal : PENA SAINS

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Oxidation Behavior of Zr-based Amorphous Alloys at 400˚- 450˚C in Air Triwikantoro Triwikantoro; Romdhoni Graha Pribadi; Fatimatul Munawaroh
JURNAL PENA SAINS Vol 6, No 1 (2019): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v6i1.5232

Abstract

The study of oxidation behavior of amorphous alloys based on Zirconium with 2 variations in composition was carried out: Zr64.5Cu17Ni11Al7.5 and Zr69.5Cu12Ni11Al7.5 at temperatures of 400 - 450˚C in air. Amorphous Zr-based alloys were thermally characterized using Differential Scanning Calorimeter (DSC) to determine the crystallization temperature and glass transition temperature. The oxidation characterization was carried out using a Thermo gravimetric Analyzer (TGA) at temperatures of 400, 425, and 450˚C for 4 hours in air. The phase analysis of the oxidation product was identified using X-Ray Diffaction (XRD). Based on DSC data the crystallization temperature for Zr64.5Cu17Ni11Al7.5 and Zr69.5Cu12Ni11Al7.5 is 426 and 442˚C respectively. The oxidation kinetics of the two alloys follow parabolic law and the oxidation rate increases with the addition of temperature. Oxides formed during isothermal oxidation in the Zr64.5Cu17Ni11Al7.5 and Zr69.5Cu12Ni11Al7.5 alloys are t-ZrO2 (tetragonal) as the dominant phase and ZrO2 (monoclinic) and CuO as the minor phase. The intermetallic phase is also formed in both samples, t-Zr2Ni and Zr2Cu.
CALCIUM OXIDE CHARACTERISTICS PREPARED FROM AMBUNTEN’S CALCINED LIMESTONE Fatimatul Munawaroh; Laila Khamsatul Muharrami; Triwikantoro Triwikantoro; Zaenal Arifin
JURNAL PENA SAINS Vol 5, No 1 (2018): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v5i1.3836

Abstract

Calcium oxide (CaO) and calcium carbonate (CaCO3) are widely used in industry. CaO and CaCO3 can be synthesized or derived from limestone. The purpose of this study to determine the characteristics of CaO calcined limestone from Ambunten Sumenep. Lime in calcined at 850 ° C for 6 hours. Characterization of X-ray fluorescence (XRF) was conducted to determine the chemical composition of limestone, X-ray diffraction test (XRD) to find the lime crystalline phase and FTIR test to determine the absorption of wave number. XRF test results showed that the limestone chemical composition consisted of Ca of 95.37% as the dominant element, Mg of 4.1%, Fe 0.17% and Y by 0.39%. The XRD test results showed that the limestone crystal phase is ankerite (Ca [Fe, Mg] [CO3] 2) and after the calcined phase calcination is vaterite (Ca [OH] 2), calcite (CaO) and calcite (CaCO3). While the FTIR test results show that the CaO spectra are seen at 3741.24, 1417.12 and 874.14 cm-1.
Co-Authors Abarrul Ikram Abdullah, Mohammad Agus Purwanto Agus Purwanto Ahmad Rifai Ahmad, Nanang Sufiadi Amaliyah Rohsari Indah Utami Astuti, Fahmi Azam, Alfandy Kurnia Badri G.S Budi Prayitno Cahyono, Yoyok Chairatul Umamah Chaironi Latif D Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto, D Edy Giri Rachman Putra Endarko Endarko Fachry Abda El Rahman Fajar, M N Fatimatul Munawaroh Fatimatul Munawaroh Fatimatul Munawaroh Hariyati Purwaningsih Herman Jufri Andi, Herman Jufri Idhil Ismail, Andi Laila Khamsatul Muharrami M Munasir Malik Anjelh Baqiya Masdya, Yoga Mashuri Mashuri Masyitatus Daris S Moch Zainuri Muhammad Ghufron Munaji Munaji Munaji, Munaji MUNASIR Munasir Munasir Munasir Munasir Musyarofah Musyarofah, Musyarofah Muthmainnah, Melania Suweni Muntini Naqiibatin Nadliriyah Nuraini, Inas Nurul Amalia T Nurul Amalia Triyuliana Prasetiono Prasetiono Pratama, Albet Eka R Hidayat Ratna Ediati Regina Gaby Lastiana Dyana Rizki Dwi Ardika Romdhoni Graha Pribadi Santi Puspitasari Setyawan Wijayanto Sistin A. Ani Soni Sukendar Soni Sukendar Sriyani Purwaningsih Suasmoro Suasmoro Sukamto, Heru Suminar Pratapa Sunaryono Sunaryono Surahmat Hadi Yusri Nur Rozaqi Zaenal Arifin Zainuri (DOI: 10.12962/j24604682.v12i2.1331), Mochamad Zainuri, M