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INDONESIA
Jurnal Sains Materi Indonesia
Published by Badan Tenaga Nuklir Nasional
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Materials Science & Nanotechnology
Jurnal Sains Materi Indonesia (Indonesian Journal of Materials Science), diterbitkan oleh Pusat Teknologi Bahan Industri Nuklir - BATAN. Terbit pertama kali: Oktober 1999, frekuensi terbit: empat bulanan.
Arjuna Subject : -
Articles 865 Documents
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NANOSTRUCTURED ALLOYS AND MECHANICAL ALLOYING L. Lu; M. O. Lai
Jurnal Sains Materi Indonesia Vol 4, No 2: FEBRUARI 2003
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2003.4.2.4878

Abstract

NANOSTRUCTURED ALLOYS AND MECHANICAL ALLOYING. This paper reviews the formation of nanostructured alloys, recent development of nanocrystalline magnesium alloys and their nanocomposite synthesized via mechanical alloying. Though mechanical alloying was developed for the processing of oxide dispersion strengthening super-alloys, this technique offers the possibility of producing very fine crystallite size down to the nano-scale with flexibility in alloying so that the mechanical properties of the final composite can be tailored.
SYNTHESIS AND CHARACTERIZATION OF HPMC/HAp/Fe3O4 COMPOSITE FOR HYPERTHERMIA APPLICATION Muflikhah Muflikhah; Wildan Zakiah Lubis; Irma Septi Ardiani; Khoirotun Nadiyyah; Sulistioso Giat Sukaryo
Jurnal Sains Materi Indonesia Vol 21, No 4: JULY 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.4.6023

Abstract

SYNTHESIS AND CHARACTERIZATION OF HPMC/HAp/Fe3O4 COMPOSITE FOR HYPERTHERMIA APPLICATION. Magnetic material become subject of intense research for hyperthermia application, and injectable magnetic hyperthermia for bone cancer is one of this research interest. In this study, composite of hydroxyapatite (HAp) and Fe3O4 in Hydroxypropyl-methyl cellulose (HPMC) matrix (HPMC/HAp/Fe3O4) has been synthesized in gel form that are expected can be applied for injectable bone substitute (IBS) in hyperthermia therapy. Composites were made using conventional methods by mixing HAp powder with ferrofluid Fe3O4 in HPMC solution. The composition of the composites were varied with the mass comparison of HPMC: HAp: Fe3O4 was 1: 0: 0; 1: 3: 0; 1: 2: 0.5; 1: 1: 0.25; and 1: 0: 3. The physical, chemical, and magnetic properties of the composites were characterized using X-Ray Diffractometer (XRD), Fourier Transform Infrared Spectrometry (FT-IR), Particle Size Analyzer (PSA), and Vibrating Sample Magnetometer (VSM). The XRD characterization results of the HPMC/HAp/Fe3O4 composite showed the crystalline phase of the constituent components. Saturation magnetization of the HPMC/HAp/Fe3O4 composite was 2.72 emu/g and 1.79 emu/g for the composition of 1: 2: 0.5 and 1:1:0.25 respectively. HPMC/HAp/Fe3O4 composite has superparamagnetic and biocompatible properties, so that can be applied as IBS in hyperthermia therapy for bone cancer.
MAGNETIC FORCE MICROSCOPE IMAGE EVALUATION OF MAGNETIC IRON OXIDE FLOPPY DISC WITH VARIOUS LIFT HEIGHTS Nanda Shabrina; Mardiyanto Mardiyanto; Abu Khalid Rivai
Jurnal Sains Materi Indonesia Vol 21, No 3: APRIL 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.3.5773

Abstract

Magnetic Force Microscope Image Evaluation of Magnetic Iron Oxide Floppy Disc with Various Lift Heights. One of the advantages of Scanning Probe Microscopes (SPM) or better known as the Atomic Force Microscope (AFM) is its ability to "see" in detail at the level of atoms and molecules, so as to improve understanding of how a system works and leads to new discoveries in areas such as life science, materials science, electrochemistry, polymer science, biophysics, nanotechnology and biotechnology. To understand about the MFM mode, amplitude, phase and topographic image, a piece of a flop-py disk as references sample was used in various lift heights. In this paper presented the principles of AFM work and explain the necessary components of such equipment. The MFM images were taken in floating operation method at different heights namely 30, 40 and 60 nm between the surface sample and Co-Cr cantilever tip. Result showed the distance between the cantilever tip to the sample surface influenced the image quality. The best amplitude image could be taken in 60 nm distance.
PREPARATION OF HYDROXYAPATITE POWDERS FOR MEDICALAPPLICATIONS VIA SOL-GEL TECHNIQUE Iis Sopyan
Jurnal Sains Materi Indonesia Vol 4, No 2: FEBRUARI 2003
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2003.4.2.4883

Abstract

PREPARATION OF HYDROXYAPATITE POWDERS FOR MEDICALAPPLICATIONS VIA SOL-GEL TECHNIQUE. Hydroxyapatite (HA) powders have been prepared via sol-gel procedure using calcium nitrate tetrahydrate and di-ammonium hydrogen phosphate as the precursors for calcium and phosphorus, respectively. An ammoniacal solution of the monomers was heated at 100°C for about 3 –4 h until a white gel of hydroxyapatite mixture were obtained. The obtained gel was then dried at 340°C for 7 h and subsequently subjected to an 820°C calcination for 2 h. The yield of the powder mixture ranged between 50 to 53 g. XRD measurement shown that the powder contained hydroxyapatite crystal with b-TCP ( 15-20%) and calcium oxide (4-6%) as secondary phases. Further treatment was conducted to gain hydroxyapatite powder of higher purity, thus the correct Ca/P ratio, by adding an appropriate amount of di-ammonium hydrogen phosphate and heated while stirring at 90°C for 4 h. Good purity (almost 100%) of the obtained hydroxyapatite was confirmed by XRD analysis.This result proved that our HA powder meets the medical prerequisite: a HA purity of above 95%. Morphological evaluation by SEM measurement shows that the particles of the HA agglomerate are globular in shape with an average size of 1-2 mm in diameter. Meanwhile, the primary particles have a diameter of 70-150 nm in average. Surface area of the powder is 7 m2/g and the mean particle size as measured using X ray sedimentation method is ca. 1 mm. The measurements are not in good agreement with the morphological investigation. We consider, accordingly, that the particles presumably have high surface potentials, thus forming very tightly bonded agglomerates
THE EFFECT OF REVERSE FLOTATION METHOD ON SILICA SAND AS WATERPROOFING MORTAR Okky Putri Prastuti; Ayu Tri Septianingrum; Elisya Dianty Fatmala; Ufafa Anggarini; Tri Eddy Susanto; Nuvixca Dewi Milangsari
Jurnal Sains Materi Indonesia Vol 22, No 1: OCTOBER 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.22.1.5991

Abstract

THE EFFECT OF REVERSE FLOTATION METHOD ON SILICA SAND AS WATERPROOFING MORTAR. Waterproof fabrication mortar cement by silica sand using reverse flotation silica (RFS) method was evaluated by waterproof absorption coefficient, compressive strength test, attractive test, and contact angle. RFS is used to replace waterproof agent and aggregate mortar to reduce cost. The aims of this experiment are to know the RFS process, the ratio between waterproof mortar cement with RFS and mortar, to determine performance and characteristic waterproof mortar cement. Methods used are prepared RFS, mortar cement fabrication, and testing (compressive strength, tensile strength, permeability, contact angle, XRF, FTIR, SEM, BET). Variable used are ratio cement/silica sand, concentrations of CaCl2, curing time, oleic acid, and sodium oleate addition. Optimum collector addition is obtained by oleic acid with compress strength 167.65 kg/cm2, tensile strength 0.16 MPa, permeability 4.6 cm, and contact angle 95°. Curing inside water effect and outside temperature give compress strength 167.65 kg/cm2 and 163.24 kg/cm2, permeability curing inside the water and outside temperature are 4.6 cm and 12 cm. Optimum CaCl2 addition is gained at CaCl2 1.8M with compress strength 64.29 kg/cm2, tensile strength 0.15 MPa, permeability 2.4 cm, contact angle 95°. Optimum ratio cement/RFS is 1:1 with compress strength 167.65 kg/cm2, tensile strength 0.16 MPa, permeability 4.6 cm, and contact angle 950.
COVER JUSAMI VOL.21, NO.1, OCTOBER 2019 JUSAMI JUSAMI
Jurnal Sains Materi Indonesia Vol 21, No 1: OCTOBER 2019
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2019.21.1.6152

Abstract

THE UTILIZATION OF PET WASTE AS RAW MATERIAL FOR PRODUCING MONOFILAMENT YARN : THE EFFECT OF WINDING SPEED ON THE PHYSICAL AND MECHANICAL PROPERTIES OF THE YARN Abdurrohman Abdurrohman; Valentinus Galih Vidia Putra; Akbar Hanif Dawam Abdulllah
Jurnal Sains Materi Indonesia Vol 21, No 3: APRIL 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.3.5901

Abstract

THE UTILIZATION OF PET WASTE AS RAW MATERIAL FOR PRODUCING MONOFILAMENT YARN : THE EFFECT OF WINDING SPEED ON THE PHYSICAL AND MECHANICAL PROPERTIES OF THE YARN. Plastic waste production in Indonesia is quite high, reaching 15% to the total national waste production or 189-kilo tons/day with an average growth of 14.7% per year, the second biggest contributor after organic waste. This fact greatly affects human health and the environment since plastic is difficult to degrade, estimated to require 100 to 500 years for the plastic to decompose completely. Therefore, recycling becomes a popular solution to reduce waste or plastic waste by turning it into new products that have added value. Plastic materials, such as PET, have thermoplastic properties which become a special potential to use as recycled materials. The aim of this research was to study the ability of PET plastic waste as a raw material for making monofilament yarn by melt-spinning methods. PET plastic waste is melted at 250-260 °C, then is extruded using a prototype melt-spinning tool with a single spinneret hole which the diameter is 3 mm into a monofilament yarn using three variations of winding speed (a) 43.33 m/min, (b) 59.35 m/min and (c) 72.72 m/min The results showed that the yarn with the highest winding speed (variation C) produced yarn with the highest fineness, reaching (30.06± 4.82) denier, and the best tensile strength compared with the other, reaching (47.7±14,97) MPa with elongation of of (10± 9.65) %.
THE EFFECT OF CALCINATION TEMPERATURE TO THE COMPOSITE CHARACTERISTICS OF TiO2SiO2 NANOPARTICLE Della Dwi Ananda; Dina Kartika Maharani
Jurnal Sains Materi Indonesia Vol 22, No 1: OCTOBER 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.22.1.6020

Abstract

THE EFFECT OF CALCINATION TEMPERATURE TO THE COMPOSITECHARACTERISTICS OF TiO2SiO2 NANOPARTICLE. Self-cleaning material is a material that utilizes the photocatalytic property to degrade organic and inorganic compounds with the help of UV light. One of the materials that have good photocatalytic property is TiO2, the photocatalytic property causes TiO2 to be amphiphilic: becomes hydrophilic when there is light and becomes hydrophobic when there is no light. The photocatalytic property of TiO2 can be improved with the addition of buffer material such as SiO2. TiO2SiO2 nanoparticle was synthesized using a sol-gel method with Titanium (IV) Isopropoxide (TTIP) precursors for TiO2 and Tetraethyl Orthosilicate (TEOS) precursors for SiO2 and followed by a variation of calcination temperature of 400 °C, 450 °C, 500 °C, and 550 °C for 2 hours. TiO2SiO2 composite was synthesized using composition TiO2 sol 75% and SiO2 25%. The result of the synthesis TiO2SiO2 composite was characterized by Fourier Transform Infra-Red (FT-IR) instrument to determine the functional groups in the composites and X-Ray Diffraction (XRD) instruments to determine the phase, crystallite size and degree of crystallinity in the composite. The purpose of this research is to synthesized TiO2SiO2 nanoparticle as a self cleaning agent with variation of the calcination temperature, to obtain composite characteristics that can support self cleaning. The self-cleaning ability was based on a produced composite characteristic of TiO2SiO2. The result of FTIR characterization showed that at calcination temperature of 400 °C, 450 °C, 500 °C, and 550 °C there was a Ti-OSi bond at the peak of 948.91 cm-1, 950.77 cm-1, 941.13 cm-1, 942.13 cm-1. The result of XRD characterization showed that at the temperature of 400 °C had the best characteristics, the 75.27% anatase phase and brookite phase 24.72%. Calcinations temperature 400 °C had best degree of crystallinity of 91.66%.
PREFACE JUSAMI Vol. 21, No. 3, APRIL 2020 JUSAMI JUSAMI
Jurnal Sains Materi Indonesia Vol 21, No 3: APRIL 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.3.6158

Abstract

ANALISIS ELEMEN HINGGA TEGANGAN TERMAL PADA PADUAN Fe-11Al. Dyah Sulistyanintyas; A. M. Sunardi; Syahril Syahril
Jurnal Sains Materi Indonesia Vol 4, No 2: FEBRUARI 2003
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2003.4.2.4879

Abstract

ANALISIS ELEMEN HINGGA TEGANGAN TERMAL PADA PADUAN Fe-11Al. Program ANSYS berbasis Metode Elemen Hingga telah digunakan untuk menganalisis tegangan termal pada lapisan alumina vang terbentuk selama oksidasi suhu tinggi pada paduan Fe-11A1. Model simulasi mengasumsi pada perilaku elastik murni dari lapisan oksida serta perilaku elastik-plastik ideal dari logam substratnya. Pengkajian terhadap efek relaksasi tegangan oleh deformasi plastik substrat dan efek geometri oksida yang terbentuk oleh oksida berbentuk flat, konvolusi, dan konvolusi berpori telah dilakukan. Hasil perhitungan memperlihatkan bahwa di bawah kondisi suhu tertentu. tcgangan tarik dari oksida berbentuk konvolusi berpori mencapai 678 MPa - 2 GPa dan dapat melebihi kekuatan tarik σx dari lapisan aluminanya. Hasil perhitungan tegangan ini bersesuaian dengan pengamatan.

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