Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

2.392

P-Index

This Author published in this journals

All Journal Jurnal Sains Materi Indonesia Rekayasa Mesin FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Spektra Omega: Jurnal Fisika dan Pendidikan Fisika Jurnal Penelitian Karet Science and Technology Indonesia Indonesian Journal of Chemistry Metalurgi JURNAL KAJIAN TEKNIK MESIN Jurnal Riset Sains dan Kimia Terapan Jurnal Konversi Energi dan Manufaktur Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK) Automotive Experiences PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Makara Journal of Science Indonesian Journal of Physics (IJP) Aceh International Journal of Science and Technology Metalurgi AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Jurnal Sains Materi Indonesia Jurnal Elektronika dan Telekomunikasi

Bambang Soegijono

Departemen FMIPA, Universitas Indonesia

Author-ID : 383674

Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation Other

Published : 46 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4 5

Mass Loss Pada Pemaduan Logam Ni-Fe-Mn-Al Metode Vacuum Arc Melting Furnace Terhadap Hume-Rothery Rules Hamdan Akbar Notonegoro; Bambang Soegijono; Sovian Aritonang; Sunardi Sunardi; Dhimas Satria
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume III Nomor 2, Oktober 2017
Publisher : Universitas Sultan Ageng Tirtayasa

Logam paduan merupakan material hasil campuran antar logam, atau antara logam dengan elemen lain, yang dibuat untuk menghasilkan sifat dan karakter material logam yang diinginkan. Material logam paduan yang dibuat menggunakanCompact Arc Melter MAM–1 memiliki resiko terbuangnya sejumlah bagian (mass loss) komposisisaat peleburan. Untuk itu perlu diidentifikasi pengaruh metode peleburan yang digunakan terhadapkondisi mass loss. Dari Hume-Rothery’s Rules diketahui bahwa perbedaan jari-jari atom dan elektron valensi antara elemen pelarut dan terlarut mempengaruhi besarnya mass loss yang terjadi. Dalam penelitian ini telah dibuat logam paduan sistem Ni20Fe30Mn32Al18 (at. %)menggunakan Compact Arc Melter MAM – 1 dengan dua variasi level busur. Ditemukan bahwa penggunaan busur api level 3 menghasilkan kehilangan massa yang lebih besar dari level 4. Namun, komposisi paduan yang diperoleh dengan busur api level 3 lebih proporsional terhadap komposisi yang direncanakan dibandingkan dengan busur api level 4, yang mengalami defisit kandungan Mn. Dengan demikian busur api level 3 digunakan untuk mendapatkan paduan dengan rasio komposisi (wt. %) proporsional dengan komposisi yang direncanakan.

Electrochemical Behavior, Structure, and Morphology of Electrodeposited Nickel on Copper Alloy Prepared from Sulfate Bath without Additive Addition Bambang Soegijono; Ferry Budhi Susetyo; Hamdan Akbar Notonegoro; Musfirah Cahaya Fajrah
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 1, April 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v2i1.7724

Nickel and nickel alloy has good chemical and physical properties to enhance corrosion resistance. Electrodeposited nickel layer are expected to enhance corrosion resistance of copper as substrates. The difference distance crystal plane of Nickel and Copper is about 0.02 – 0.03 Angstrom. The electrochemical behavior, structure and morphology of electrodeposited nickel on copper substrate in sulfate solution were investigated. Electrodepositions of nickel layer were conducted at room temperature with various current densities (10 mA/cm², 20 mA/cm², and 30 mA/cm²). Electrochemical behavior, structure, and morphology of the samples were analyzed by using potensiostat, x-ray diffraction (XRD), and Scanning electron microscope (SEM). The x-ray diffraction patterns show that the nickel has cubic FCC crystal system and space group Fm-3m. The current density during electrodeposition influence crystal parameter, crystallite size and micro strain of nickel film deposited. Electrodeposited nickel with current density 30 m A/cm² shows the best corrosion resistance.

Effect Of Titanium On Corrosion Behavior Of Aluminum Alloy 3104 As a Candidate Material For Radiator Combustion Engines Arief Syarifuddin Fitrianto; Bambang Soegijono; Caing Caing; Hamdan Akbar Notonegoro
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.10855

Aluminum Alloy 3104 is aluminum usually used for beverage can. By modifying the content of Titanium content in the alloy, it is expected that this material will be suitable for radiator engine combustion. Especially for its corrosion behavior in coolant solution. Aluminum alloy with different content of Titanium was investigated on its crystal structure, morphology and its corrosion behavior in ethylene glycol solution which is usually used as additive in coolant water. X-ray diffractometer, Electron microscope and potentiodynamic were used to investigate the crystal structure, morphology and corrosion behavior respectively. The results show (002) crystal plane dominate the surface of the sample as the Titanium increase. The (111) and (002) crystal plane are very low compare to (022) crystal plane. Crystallite size and micro strain are affected by addition of Titanium. Surface morphology are clearly affected by the addition of Titanium. Addition of Titanium causes corrosion behavior of the samples. It concludes that the aluminum alloy with different Titanium content in this research, can be used for making radiator combustion engine.

PERHITUNGAN KURVA HISTERESIS INTRINSIK MATERIAL ZINC OXIDE (ZnO) Septian Rahmat Adnan; Bambang Soegijono
Jurnal Konversi Energi dan Manufaktur Vol. 5 No. 1 (2018)
Publisher : Universitas Negeri Jakarta

Energi bebas Gibbs dan kurva polarisasi spontan dari Zinc Oxide (ZnO) dihitung menggunakan Teori Landau-Devonshire. Program komputasi untuk menghitung Energi bebas Gibbs dan kurva polarisasi spontan dibuat pada Delphi 6 . Dari hasil perhitungan menunjukan bahwa energi bebas Gibbs terendah terdapat pada ZnO doping Li 1%s yang menunjukan struktur kristal paling stabil.

Synthesis of Single Phase BaFe12O19 Nanoparticle by Sol-Gel Method Dwita Suastiyanti; Bambang Soegijono; Azwar Manaf
JURNAL ILMU PENGETAHUAN DAN TEKNOLOGI (IPTEK) Vol. 9 No. 1 (2014): Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK)
Publisher : Institut Teknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31543/jii.v9i1.51

Barium hexaferrite BaFe12O19 (BHF) is a great importance as permanent magnets, particularly formagnetic recording as well as in microwave devices. Barium hexaferrite also could be used as one of theÂ basic constituent compound of multiferroic material. Multiferroic is a class of materials that yieldsimultaneous effects of ferroelectric,ferromagnetism and ferroelasticity in the same material. So BHF mustÂ be as nanoparticle and single phase to increase magnetoelectric coupling effect showing improvementÂ multiferroic properties in material. Barium hexaferrite powders were prepared by sol gel auto combustionÂ method. Hence the mole ratios of Ba2+/Fe3+ were varied at 1:12; 1:11.5 and 1:11 and sintering at 850oCÂ for 10 hours for each mole ratios. To confirm the formation of single phase, it was used X-Ray DiffractionÂ (XRD) Phillips, PW 1835 type in the 20o-100o diffraction angle using CuKÎ± radiation. XRD results showedÂ that sample with mole ratios of Ba2+/Fe3+ = 1:11,5 was best sample due to having single phase, 100% BHFÂ phase be evidenced by HighScore Plus Refinement. Using Particle Size Analyzer (PSA) from BeckmanÂ Coulter type showed that sample with mole ratios of Ba2+/Fe3+ = 1:11,5 was powder in nano size, 66 nmÂ (<100 nm). This research confirms that sol-gel method using mole ratio of Ba2+/Fe3+ = 1:11,5 and sinterÂ temperature at 850oC for 10 hours could be used for synthesize single phase BHF in nanoparticle.

Microwave Assisted Cationic Polymerization of Different Type Palm Oils with Boron Trifluoride Ethereal Catalyst Muhamad Farid; Bambang Soegijono; Zainal Alim Mas’ud
Indonesian Journal of Chemistry Vol 19, No 1 (2019)
Publisher : Universitas Gadjah Mada

Indonesia is a major producer of palm oils. However, more than 76% of the production is exported as crude palm oil (CPO) with low economic values. Chemical conversion is necessary to produce more valuable derivatives of renewable biobased material including a thermoplastic polymer. In this study, crude palm oils (CPO), refined-bleached deodorized palm oil (RBDPO) and refined bleached deodorized palm oil olein (RBDPOO) were converted under microwave-assisted cationic polymerization with the boron trifluoride ethereal catalyst. The precursors were irradiated using the commercial microwave with various reaction conditions. The raw material compositions, iodine values, and functional groups of the raw material and polymers were analyzed by gas chromatography, titrimetry, and Fourier Transform infrared spectrophotometry, respectively. The differential scanning calorimetric (DSC) was used to observe the thermal characteristics of the polymers. The iodine value of the resulting polymer products was lower than the raw materials which indicated the decrease of the C=C bonds due to the polymerization. This result is supported by the decreased intensity of alkene bands in the infrared spectra of the product. The DSC thermogram curve proved that the product is a thermoplastic polymer with a melting point ranged from 40.3 to 45.2 °C; and the freezing point of 22.5 to 28.1 °C. In conclusion, palm oil-based thermoplastic polymer was successfully synthesized and characterized, and the best result was achieved when using RBDPOO as starting material.

Growth, Electronic Structure, and Electrochemical Properties of Cubic BaTiO3 Synthesized by Low-Pressure Hydrothermal-Assisted Sintering Mohammad Khotib; Bambang Soegijono; Zainal Alim Mas'ud; Gina Libria Nadjamoeddin
Indonesian Journal of Chemistry Vol 22, No 1 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.68978

Cubic BaTiO3 was synthesized through low-pressure hydrothermal-assisted sintering using Ba(OH)2 and TiO2 as precursors with a mol ratio of Ba:Ti = 1.4:1. The single phase of cubic BaTiO3 was produced at a sintering temperature of 800 °C for 2, 4, 8, and 12 h. The absence of diffraction peak splitting at 2q of 45° was indicated cubic BaTiO3. The crystallite size of BaTiO3 ranged from 80–200 nm, and its size increased with increasing temperatures and sintering times. The micro-strain of the BaTiO3 crystal lattice had a range between 0.27 and 0.68%. The minimum bandgap on the indirect bandgap was about 1.75 eV from point M to Γ, while the direct bandgap was about 1.95 eV from Γ to Γ. Ti–O's interaction had a covalent character, while that of Ba–O had an ionic character based on the density of state (DOS) calculation. The characteristics of the BaTiO3 voltammogram show an irreversible redox mechanism with a more observable reduction peak in Ti4+/Ti3+. Higher current density at over potential indicated greater BaTiO3 capabilities in Oxygen Evolution Reaction (OER)-Oxygen Reduction Reaction (ORR) electrocatalysis. For that, purified cubic BaTiO3 offers potential application as an electrode for batteries, water splitting systems, and regenerative fuel cells.

MAGNET HIBRIDA BaFe12O19/Sm2Co17: SINTESIS DAN SIFAT KEMAGNETAN Erfan Handoko; Iwan Sugiharto; Zulkarnain Jalil; Bambang Soegijono
Jurnal Riset Sains dan Kimia Terapan Vol 3 No 1 (2013): JRSKT - Jurnal Riset Sains dan Kimia Terapan, Volume 3 Nomor 1 Juli 2013
Publisher : Program Studi Kimia Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (511.046 KB)

Dengan tujuan meningkatkan sifat kemagnetan barium heksaferat, BaFe12O19, disintesis magnet hibrida dengan mengkombinasi magnet Sm2Co17 melalui metode mechanical mixing. Proses perlakukan panas terhadap campuran serbuk magnet hibrida dalam suasana gas argon bertujuan untuk menghilangkan residual stress dan kristalisasi serbuk magnet. Analisis struktur kristal diketahui dengan difraksi sinar-X phillips radiasi Kï¡ Co. Morfologi serbuk magnet hibrida diamati dengan scanning electron microscope ï¡SEMï¡. Sifat kemagnetan diukur dengan Permagraph pada temperatur kamar dengan medan magnet luar maksimum 2 T. Hasil sintesis magnet hibrida menunjukkan bahwa terbentuk fasa baru dan terjadi penurunan magnetisasi saturasi ï¡Msï¡ dan nilai magnetisasi sisa ï¡Mrï¡ setelah perlakuan panas. Namun koersivitas ï¡Hcï¡ meningkat dengan nilai maksimum 28,73 kA/m. Kata Kunci : Magnet hibrida, mechanical mixing, perlakuan panas, koersivitas. In order to enhance the magnetic properties of barium ferrite, BaFe12O19, synthesized hybrite magnet by combaining Sm2Co17 magnet and prepared by mechanical mixing method. The heat treatment of hybrite magnet powders in an argon gas atmosphere in order to release residual stress and crystallize magnet powders. The analysis of crystal structures was examined by X-Ray Diffractometer (XRD) Phillips with Kï¡ Coradiation. Morphology of hybrite magnet was studied using a scanning electron microscope (SEM). The magnetic measurement is carried out by Permagraph at the room temperature with respect to the magnitude the applied field up to 2 T to find magnetic properties of hybrite magnet. The results show that the new phase is found and decrease saturation magnetization (Ms) and also remanen (Mr) after heat treatment. But The coercivity (Hc) is increased with the maximum of 28.73 kA/m. Keywords : Hybrite magnet, mechanical mixing, heat treatment, coersivity.

PENGARUH UKURAN PARTIKEL TERHADAP SIFAT KEMAGNETAN MATERIAL MAGNET KOMPOSIT BaFe12O19/aFe Erfan Handoko; Setia Budi; Bambang Soegijono
Jurnal Riset Sains dan Kimia Terapan Vol 3 No 2 (2013): JRSKT - Jurnal Riset Sains dan Kimia Terapan, Volume 3 Nomor 2 Desember 2013
Publisher : Program Studi Kimia Universitas Negeri Jakarta

Pembentukan material magnet komposit yang terdiri serbuk barium heksaferat, BaFe12O19, dan serbuk besi BCC, aFe, dengan perbandingan 60:40 % berat telah dilakukan. Proses penghalusan ukuran partikel magnet komposit dengan menggunakan planetary ball mill (PBM) dalam suasana toluen selama 30 jam bertujuan untuk meningkatkan sifat kemagnetan. Identifikasi fasa magnet komposit diperoleh hasil pengukuran dengan difraksi sinar-X radiasi Ka Co. Foto morfologi bentuk partikel magnet komposit menggunakan scanning electron microscope (SEM) 5310LV Jeol pada perbesaran 2000 kali. Distribusi ukuran partikel diketahui dengan LS Particle Size Analyzer (PSA) Beckman Coulter dan sifat kemagnetan dianalisis dengan alat Permagraph pada temperatur kamar. Hasil pengukuran menunjukkan bahwa selama penghalusan ukuran partikel material magnet komposit melalui proses milling tidak terjadi dekomposisi fasa, distribusi ukuran serbuk cendrung menurun dengan bertambahnya waktu milling. Pengaruh terhadap sifat kemagnetan material magnet komposit BaFe12O19/aFe yang mengalami penurunan magnetisasi sisa atau remanen dari 0,32 T menjadi 0,15 T dan nilai koersivitas magnetik 228,3 kA/m menjadi 42,5 kA/m. Namun nilai magnetisasi saturasi cendrung meningkat dari 0,59 T menjadi 0,80 T.Kata Kunci : Magnet komposit, ukuran partikel, sifat kemagnetan, BaFe12O19/aFe. The formation of magnetic composite material by combaining barium hexaferrite, BaFe12O19, and aFe powder with 60:40 % wt ratio has been investigated. The refinement of particle size of composite magnet by using planetary ball mill (PBM) for 30 hours in toluena atmosphere in order to enhance the magnetic properties. Phase identification of magnetic composite was examined by X-Ray Diffractometer (XRD) Phillips with KaCo radiation. The morfology of magnetic composite particle was studied using a scanning electron microscope (SEM) 5310LV Jeol.The particle distribution is measured LS Particle Size Analyzer (PSA) Beckman Coulter and the magnetic properties is measured by Permagraph at the room temperature. The results show that in milling process, the phase decomposition is not found, and particle size distribution is decrease. Influence on magnetic properties of magnetic composite material BaFe12O19/aFe are decrease remanen (Mr) from 0,32 T to 0,15 T and also the coercivity (Hc) from 228,3 kA/m to 42,5 kA/m. But the saturation magnetization (Ms) increase from 0,59 T to 0,80 T.Keywords : Composite magnet, particle size, magnetic properties, BaFe12O19/aFe .

Effect of magnetic field on the behavior of Electrochemical oxidation of Aluminum in 3.5% NaCl solution Surya Darma; Sukarno Sukarno; Bambang Soegijono; Hamdan Akbar Notonegoro; Naila Mubarok
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 8, Issue 1, April 2022
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.14703

An irreversible electrochemical reaction from material interaction with the environment and causing degradation is known as corrosion. The electrolyte changes significantly affect the corrosion's reaction kinetics. Unknown factors and various notable factors influence the corrosion rate of a particular material in the environmental system. Significant interest in magnetic fields and their effects on electrochemical reactions have recently been gained. This paper studies the effect of an external magnetic field on the electrochemical oxidation of Aluminum (Al) in a 3,5% NaCl solution. The magnetic field 0; 0,8; 1,4; and 2,1 Tesla were used to expose the samples during corrosion testing. We found that the effect of a magnetic field on electrochemical oxidation shifts the oxidation potential to higher or lower than the oxidation potential without a magnetic field. Moreover, the oxidation potential's value depends on the magnetic field's intensity.

Co-Authors A.A. Ketut Agung Cahyawan W Aditia Pradipta Akmal Johan Ali, Nora'aini Andika W. Pramono Andri Suherman Anggrainy, Rani Arief Ramadhan Arief Ramadhan Arief Sudarmaji Arief Syarifuddin Fitrianto Arief Syarifuddin Fitrianto Aritonang, Sovian Arsali Arsali Asep Yudi Hercuadi Asep Yudi Hercuadi, Asep Yudi Azwar Manaf Basori Basori Bintoro Siswayanti Budhy Kurniawan Cahaya Rosyidan Caing Caing Chandra, Johannes Daniel Edbert Decky J. Indrani Dhimas Satria Dona Sulistia Kusuma Dwi Nanto, Dwi Dwita Suastiyanti Edie Sasito, Edie Elman Panjaitan Emil Budianto Emil Budianto Erfan Handoko Evi Ulina Margaretha Situmorang Fendy Rokhmanto Ferry Budhi Susetyo Ferry Budhi Susetyo Ferry Budhi Susetyo Ganis Sanhaji, Ganis Gina Libria Nadjamoeddin Greida Frista Hamdan Akbar Notonegoro Hamdan Akbar Notonegoro Hamdan Akbar Notonegoro Hasanudin Gufron Fachrudin Ika Kartika Ika Kartika Isom Mudzakir, MSi. Iwan Sugiharto Iwan Sugihartono Jan Setiawan Kiky C. Sembiring Koji Yoneda Koji Yoneda, Koji Kurniawan, Ova La Ode Husein ZT La Ode Husein ZT, La Ode Lubi, Ahmad M Derajat Amperajaya M Yudi Masduky M. Hikam M. Hikam Maman Kartaman Ajiriyanto Maman Kartaman Ajiriyanto Manawan, Maykel Maryati Maryati Maulani, Mustamina Maykel Manawan Moch Iqbal Zaelana Muttahar Mohammad Khotib Muhamad Farid Muhammad Hikam Muhammad Hikam, Muhammad Muhammad Irfan Faturrohman Muhammad Irfan Faturrohman, Muhammad Irfan Musfirah Cahaya Fajrah Nababan, Frederik Gresia Naila Mubarok Nazarudin Koto Nino Rinaldi Nofi Erni Notonegoro, Hamdan Akbar Ordas Dewanto Ova Kurniawan Pius Sebleku Putra, Valentinus Galih Vidia Rakhman Sarwono Raksa, Teguh Yoga Ramlan Ramlan Renanto Putra Wijaya Rizkynawan, Benridho Rizqon Priyotomo Rizqon Priyotomo, Rizqon Rokhmanto, Fendy Samura, Lisa Septian Rahmat Adnan Septian Rahmat Adnan, Septian Setia Budi Sigit Dwi Yudanto Sofyan, Muhammad Azis Sovian Aritonang Sudaryanto Sudaryanto Suhariyanto Suhariyanto Suharso Suharso Suharso Suharso Sukarno Sukarno Surya Darma Susetyo, Ferry Budhi Sutrisno S Syamsuir Syamsuir Tarmizi Tarmizi TAUFIQUR RACHMAN, TAUFIQUR Widjaya, Robert Ronal Wisnu Purno Aji Wisnu Purno Aji, Wisnu Yosef Sarwanto Yudanto, Sigit Dwi Zainal Alim Mas'ud Zainal Alim Mas’ud Zulkarnain Jalil Zulkarnain Jalil

Title

Found 46 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 46 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 46 Documents
Search