26 hasil untuk "Azwar Manaf"
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Artikel Jurnal
The effects of saccharin on the electrodeposition of NiCoFe films on a flexible substrate
In this work, the influence of saccharin on the electrodeposition of NiCoFe film on a flexible substrate was investigated. NiCoFe electrodeposition was carried out at different potentials from electrolytes both with and without saccharin. The addition of saccharin modified the nuclei growth…
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Artikel Jurnal
Studi Transformasi Fasa Sistem Besi Karbon dengan Pengamatan Thermal Diferensial
Phase Transformation Studies of Fe-C System with Differential Thermal Analyzer: Phase transformation studies for ironcarbon (Fe-C) system have been done by means of Differential Thermal Analyzer, DTA. Fe-C samples of nominal compositions for respectively low carbon containing alloy (0.1 wt.%), hypo…
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Artikel Jurnal
PHYSICAL CHARACTERISTICS AND MAGNETIC PROPERTIES OF BAFE12O19/SRTIO3 BASED COMPOSITES DERIVED FROM MECHANICAL ALLOYING
Barium hexaferrite and strontium titanate are well established permanent magnet and piezoelectric materials which are technologically and scientifically attractive due to their potential for various applications in the field of magnetic electronics functional materials. However, the material…
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Artikel Jurnal
The Effect of Current Density on The Surface Morphology in the Thin Coating Process of Nickel on Zr-2 Using the Electroplating Method
After the Fukushima-Daiichi reactor accident in 2011, one of the research and development focuses of nuclear fuel worldwide has been on coatings for Enhanced Accident Tolerant Fuels (EATF). Chromium (Cr) coatings are considered suitable due to their high oxidation resistance; however, Cr has…
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Artikel Jurnal
Physical and Microwave Absorption Characteristics of High Powered Ultrasonically Irradiated Crystalline BaFe9Mn1.5Ti1.5O19 Particles
Barium hexaferrite (BHF) with the chemical formula BaFe12O19 is a well-known permanent magnet and is still primarily used in various electrical devices. Because of its excellent magnetic properties, BHF is potentially one of the best candidates as a microwave absorber. For this investigation, the…
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Artikel Jurnal
The Effect of Induced Magnetic Anisotrophy on the Hysteresis Parameter of Nano Barium Strontium Haxaferrite Prepared by Mechanical Alloying and Sonication
In this research, analysis of the magnetic properties of the nanoscale ferromagnetic material barium strontium hexaferrite with the composition of Ba(0.7)Sr(0.3)O6(Fe2O3) or written as B7S3HF is conducted. The material was prepared by the ball mill method, followed by reducing the particle sizes of…
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Artikel Jurnal
Absorption Characteristics of the Electromagnetic Wave and Magnetic Properties of the La0.8Ba0.2FexMn½(1-x)Ti½(1-x)O3 (x = 0.1–0.8) Perovskite System
This paper reports on the magnetic properties and electromagnetic characterization of La0.8Ba0.2FexMn½(1-x)Ti½(1-x)O3 (x = 0.1–0.8). The La0.8Ba0.2FexMn½(1-x)Ti½(1-x)O3 (x = 0.1–0.8) materials were prepared using a mechanical alloying method. All the materials were made of analytical grade…
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Artikel Jurnal
The effect oF Ca and thixoforming process on hardness and microstructure oF Mg–Al–Zn alloys
Magnesium-based materials are lightweight materials that are 60% lighter in weight than steel, but the strength of these materials must be increased. This study was conducted on the effects of various Ca addition in (90-x)Mg–9Al–Zn-xCa (x = 0.0, 1.0, 1.5 and 2.0 wt.%) alloy samples made by casting…
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Artikel Jurnal
Exploring the Effect of Particle Concentration and Irradiation Time in the Synthesis of Barium Strontium Titanate (BST) Ba(1-X)SrxTiO3 (X:0-1) Nanoparticles by High Power Ultrasonic Irradiation
Barium strontium titanate (BST) or Ba1-xSrxTiO3 with x=0-1 possesses superior dielectric properties, which are widely used in many applications like in communication technology, electronic instrumentations, and various electrical devices. In this paper, the characterization of the particle and…
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Artikel Jurnal
Mineral analysis and its extraction process of ilmenite rocks in titanium-rich cumulates from Pandeglang Banten Indonesia
Pandeglang regency has a very potential mining material in the form of Ilmenite rock with high levels of Titanium content of up to 20 percent. The purpose of this study was to determine the microscopic appearance of rocks including the elements, structures, mineral compositions of the rock, and…
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Artikel Jurnal
Synthesis and Magnetic Characterization of Mn-Ti Substituted SrO.6Fe2-xMnx/2Tix/2O3 (x = 0.0–1.0) Nanoparticles by Combined Destruction Process
Single phased SrO.6Fe2-xMnx/2Tix/2O3 (x = 0.0; 0.5; and 1.0) nanoparticles, whose mean size was comparable with the crystallite size, were successfully fabricated through mechanical alloying and a subsequent ultrasonic destruction processes. The ultrasonic destruction process employed a transducer…
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Artikel Jurnal
Microstructures, Magnetic Properties and Microwave Absorption Characteristics of Ti2+ -Mn4+Substituted Barium Hexaferrite
The effect of Ti2+-Mn4+substitution on microwave absorption has been studied for BaFe12-2xTixMnxO19 ferrite, where x varies from 0.2, 0.4, 0.6 and 0.8.Ti2+-Mn4+ ions were obtained from TiO and MnO2 precursors which were mechanically alloyed together with BaCO3 and Fe2O3 precursors. X-ray…
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Artikel Jurnal
SINTESIS PIGMEN BESI OKSIDA BERBAHAN BAKU LIMBAH INDUSTRI BAJA (MILL SCALE)
Limbah industri baja (mill scale) digunakan sebagai alternatif bahan baku pigmen besi oksida. Kajian ilmiah ini menjelaskan proses pembuatan pigmen besi oksida melalui metode presipitasi dengan media air. Pigmen besi oksida yang menjadi target yaitu pigmen kuning goethit ( -FeOOH) dan merah hematit…
Juga tersedia di: DOAJ
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Artikel Jurnal
Evaluation of Sealing Strength in Multilayer LLDPE Packaging for Impact-Resistant Rice Pouches
In this study, we evaluate the mechanical integrity, thermal stability, and impact resilience of three different laminated polymer materials—PA/LLDPE, MDO-PE/LLDPE, and BOPE/LLDPE—to assess their suitability for rice packaging applications. Our experiments include tests to determine the temperature…
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Artikel Jurnal
Magnetic and Microwave Absorption Characteristics of Ti2+-Mn4+ Substituted Barium Hexaferrite
Series of Ti2+-Mn4+ ions substituted BaFe12-2xTixMnxO19 samples with x = 0.0–0.8 have been studied to find out the effect of ion substitution on their microstructure, magnetic, and microwave absorption characteristics. The materials were synthesized through the mechanical alloying process. X-ray…
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Artikel Jurnal
Optimized Carbonization and Kinetic Analysis of Palm Kernel Shell Porous Carbon for Heavy Metal Adsorption
This study explores the use of porous carbon derived from palm kernel shells to adsorb lead ions (Pb2+) from water. Porous carbon was produced by carbonizing palm kernel shells at different temperatures (400, 600, and 800 °C) and was evaluated for its effectiveness in a lead chloride (PbCl2)…
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Artikel Jurnal
Electrochemical and computational investigation of Tinospora cordifolia fractions as a novel corrosion inhibitor for carbon steel in seawater medium
Abstract This study employed electrochemical techniques and computational analyses to evaluate the efficacy of Tinospora cordifolia fraction (TCF) as an anticorrosion agent for carbon steel in a seawater medium. Electrochemical methods were employed to investigate the corrosion performance of…
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Artikel Jurnal
Hard magnetic and broadband microwave absorption characteristics of heat-treated Pr15-XDyXFe77B8(x = 0, 1, 2, and 3) alloys
In this study, fabrication of Pr15-xDyxFe77B8 (at.%) alloys with x = 0, 1, 2, and 3 compositions was performed with a mini vacuum arc melting furnace. The alloys were successively annealed in an inert atmosphere for microstructure homogenization. All alloys exhibit the typical characteristics of a…
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Artikel Jurnal
Analysis of the Antibacterial Activity and the Total Phenolic and Flavonoid Contents of the Moringa oleifera Leaf Extract as an Antimicrobial Agent against Pseudomonas aeruginosa
Pseudomonas aeruginosa is a bacterium that causes metal deterioration by forming biofilms on metal surfaces. This work was carried out to analyze the antibacterial activity and the phenolic and flavonoid contents of the Moringa oleifera leaf extract against Pseudomonas aeruginosa. M. oleifera…