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PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Published by Universitas Negeri Jakarta
ISSN : 23021829     EISSN : 24769398     DOI : https://doi.org/10.21009/03
Core Subject : Science, Education, Engineering,
Electrical & Electronics Engineering Energy Physics Other
Focus and Scope: Physics education Physics Instrumentation and Computation Material Physics Medical Physics and Biophysics Physics of Earth and Space Physics Theory, Particle, and Nuclear Environmental Physics and Renewable Energy
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 976 Documents
 37   38   39   40   41 
Sintesis Lapisan Tipis Komposit Ni-TiAlN Menggunakan Teknik Elektrodeposisi pada Berbagai Substrat Muarief Muarief; Esmar Budi; Iwan Sugihartono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Composite coating on metal is subjected to improve its wear and corrosion resistances. Electrodeposited Ni-TiAlN composite film using variations of metal or metal alloy type as substrate has been investigated. Variation of substrate type used amount 3 variations that are High Speed Steel (HSS), Brass and Galvanis. On this experiment, the electrolyte composition consist of 0.38 M Ni2SO4.6H2O, 0.17 M NiCl2.6H2O and 0.49 M H3BO3 added with each 6 gr/liter amounts of TiN and AlN powders and Dodecyl Sulfate Sodium (C12H25NaO4S) 0.5 gr/liter as sufraktan. The experiment was performed at electrodeposition current of 3.0 mA for about 15 minutes. The results show that the composite film morphology is different in each substrate. Keywords: Elektrodeposition, Ni-TiAlN composite film, High Speed Steel, Brass, Galvanis.
ANALISIS STRUKTUR KRISTAL MATERIAL BARIUM HEKSAFERRIT BaFe12-x(CoTi0.5Mn0.5)x/2O19 Nurul Annisa Kumalahardiyani; Riser Fahdiran; Erfan Handoko
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Barium hexaferrite with hexagonal molecular BaFe12O19 is one of the magnetic materials that widely used for research, about improving the quality of material corresponding the application. BaFe12O19 has high HC (magnetic saturation), good chemical stability, high TC (Curie temperature) and corrosion resistant. Synthesis material BaFe12-x(CoTi0.5Mn0.5)x/2O19, with x=0 and x=1, made through smoothing BaCO3, Fe2O3, Co3O4, TiO2, and MnCO3 using High Energy Ball Mill for 1 hour by using wet milling method. Then calcinating at temperature of 750°C for 3 hours and sintering at temperature 1100°C for 6 hours. Expected in this material may be formed phases can be identified and analyzed qualitatively and quantitatively using X-Ray Diffractometer (XRD) to identify the crystal structure of the materials and processed using High-Score Plus application. From the XRD chart, known that the substitution ion Mn, Co and Ti has been done. The value of lattice parameter is a = b =5.88 Å, and c = 23.24 Å. Keywords: crystal structure, Barium hexaferrite, X-Ray Diffractometer.
VARIASI UKURAN KARBON TEMPURUNG KELAPA SEBAGAI ALAT KONTROL KELEMBABAN E. Taer; S. Aiman; Sugianto Sugianto; R. Taslim
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Studied on humidity control at testing room has been carie out by using carbon from coconut shell. The carbon is then milled using a ball milling equipment and sieved to obtained various of particle size of a variation of the size of 10 𝛍m, 53 𝛍m, and 38 𝛍m. The results showed that forthe carbon with particle size 100 μmshow the humidity of testing room was 88%, carbon 53 μm produce humidity of 86%, and carbon 38 μm produce humidity of 85%, Without carbon the humidity in the testing room show of 90%. X-ray diffraction characterization of the carbon 38 μm showed a decrease on the interlayer spacing (d002 and d100), stack height (Lc), and the stack widht (La) compared with the carbon of 100 μm. Scanning electron microscopy (SEM) shows the carbon surface morphology, particle size and pore distribution of carbon. Kararakterisasi EDX results showed levels of carbon contained in coconut shell by 93.19%. Testing of carbon as humidity control device showed the maximum results when using carbon 38 μm compared to 53 μm carbon, and carbon 100 μm. Key words: coconut shell karbon, characterization, activated carbon, humidity.
ANALISIS STRUKTUR KRISTAL BARIUM HEKSAFERRIT TIPE-W (Ba,Sr)CoTiFe16O27 Tsaniya Mukarromah; Widyaningrum Indrasari; Erfan Handoko
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

W-type Barium Hexaferrite (BaMe2Fe12O27) has high value of currie temperature, very small coercivity (Hc), and the highest magnetic saturation (Ms) than the other ferrite materials. The W-type Barium Hexaferrite has a crystal structure that built up as a superposition of S and R blocks. Appearance of divalent and trivalent cations that distributed among various sublattices makes W-type Barium Hexaferrite become very interesting for basic studies and different applications. Synthesis and characterization of materials W-type Barium Hexaferrite by modify the value of Ba and Sr in Ba1-xSrxCoTiFe16O27 with composition x=0 and x=0.1 to determine the characteristics of the phases/crystals that formed, conducted through the process of smoothing powders of basic materials BaCO3, Fe2O3, SrCO3, Co3O4 and TiO2 by the High Energy Ball Mill for 1 hour in a wet condition (toluene). Phase forming in sintering 1100°C for 3 hours. By crystallographic analysis with measurements of X-Ray Diffractometer (XRD) on a target of Cobalt anode or anode Co, obtained phase analysis by qualitative and quantitative. From this result obtained magnetic materials BaCoTiFe16O27 and Ba0.9Sr0.1CoTiFe16O27. Lattice parameter values for BaCoTiFe16O27 and Ba0.9Sr0.1CoTiFe16O27 are a=b=5.89 Å, c= 23.24 Å dan a=b=5.89 Å, c= 23.23 Å. BaCoTiFe16O27 has a higher cell volume than Ba0.9S0.1CoTiFe16O27. Changes in cell volume affects the value of unisotropi crystal. Keywords: W-type Barium Hexaferrite, High Energy Ball Mill, X-Ray Diffractometer (XRD), Crystal Phase.
KARAKTERISASI SIFAT FISIKA KARBON AKTIF TEMPURUNG KELAPA DENGAN VARIASI KONSENTRASI AKTIVATOR SEBAGAI KONTROL KELEMBABAN E. Taer; T. Oktaviani; R. Taslim; R. Farma
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Has successfully carried out a study of the effect of different concentrations of KOH activator in coconut shell charcoal as a humidity control. KOH concentration on the activation process of coconut shell charcoal varied as much as 1 M, 2 M and 3 M. The activation process is done for two hours at room temperature. The activated carbon is washed using distilled water until the pH of the washing water became neutral and then followed by drying for 24 hours at a temperature of 100ËšC. Physical properties was studiod suchasi, surface morphology, element content and degree of cristalinity using a Scanning Electron Microscope, Energy Dispersive X-Ray and X-Ray Diffraction instrumen. Coconut shell activated carbon used as the coating material for tosting chamber. The study of humidity charavationtic with time priode of 15 minutes for 2 hours. Humidity value at the end of 2 hours of testing for concentration of carbon with 1, 2 and 3 M KOH is 89%, 88% and 85% respectively. This study shows the activation of KOH concentration depending on coconut shell carbon effect on humidity test chamber. Keywords: coconut shell, potassium hydroxide, Humidity.
Pengaruh Pengadukan pada Proses Pelapisan Ni-TiAlN Menggunakan Teknik Elektrodeposisi untuk Perlindungan Bahan Tungsten Karbida Terhadap Korosi Ade Lina Permatasari; Esmar Budi; Agus Setyo Budi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

The research of electrodeposited Ni-TiAlN nanocomposite thin film on tungsten carbide rod as substrate has been investigated. The purpose of this study was to determine the influence of agitation speed in formation of morphology and corrosion resistance. Solution of agitation speed when electrodeposited process at low speed agitation 600r/min, medium speed agitation 900r/min dan high speed agitation 1200r/min. Electrodeposited process was performed at current 3 mA for about 15 minutes. Amount of 6 gr/L of TiN and AlN powders were added into electrolyte solution consist of 0.38 M Ni2SO4.6H2O, 0.17 M NiCl2. 6H2O, 0.49 M H3BO3 and 0.01 gram of Sodium Dodecyl Sulfate. The results show that the nanocomposite thin film morphology is different in each agitation speed. Keywords: Ni-TiAlN nanocomposite film, electrodeposition, agitation, electrolyte solution.
ANALISA SIKLIS VOLTAMETRI SUPERKAPASITOR MENGGUNAKAN ELEKTRODA KARBON AKTIF DARI KAYU KARET BERDASARKAN VARIASI AKTIVATOR KOH E. Taer; Zulkifli Zulkifli; Sugianto Sugianto; R. Syech; R. Taslim
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Has successfully analyzed the carbon electrode supercapacitor from rubber wood using cyclic voltammetry method. Making the samples of early stage through the process of cutting, drying, carbonization and polishing to form pellets. Variations activator KOH and HNO3 is used to increase the surface area of ​​the electrode. Variations KOH used was 1 M, 3 M, 5 M HNO3 solution while being used is 25%. Methods of measurement of cyclic voltammetry carried out using a Solatron 1280 with a potential window of 0 to 1 Volt at the scan rate variation 1 mV/s, 5 mV/s, 10 mV/s, 30 mV/s, 50 mV/s and 100 mV/s. From data analized has found that the highest specific capacitance values ​​occur at the rate of induced 1 mV/s for all variations of KOH. The highest specific capacitance value at scan rate 1 mV/s in the variation of KOH 1 M, 3 M, 5 M is at 16,36 F /gram, 68,27 F/gram and 63,24 F/gram. Additional testing was also performed using X-ray diffraction instrument and electron scanning microscope. Keywords : Cyclic Voltammetry, Supercapacitor, Carbon Electrode, Rubber Wood.
OPTIMALISASI PENAMBAHAN SERAT IJUK TERHADAP SIFAT MEKANIK PAPAN SEMEN-GIPSUM Alimin Mahyudin; Meri Darmawi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

The purpose of this research is to know the influence addition palm fibers on the physical and mechanical properties of composite board. The addition of palm fiber used for each sample by comparison with gypsum and cement matrix is 0%, 2%, 4%, 6% and 8%. The research conducted by using a type of composite laminate is a composite of two layers or more are combined into one with each of layers has its own characteristic properties, manufacturing this board used three of layers, where cement with palm fibers contain at face-back layers and gypsum with palm fibers contain at core layers. The mechanical properties of the specimens as follows the maximum value of compressive strength and flexural strength on addition palm fibers 4% which is value 123,87 kg/cm2 and 40,83 kg/cm2. Generally, for all research, best value for addition palm fibers on 4%. Keywords: cement-gypsum board, palm fibers, a composite laminate.
PEMBUATAN DAN KARAKTERISASI MODIFIKASI ASPAL PENETRASI 60-70 DENGAN KARET ALAM BANDAR BETSY Alkhafi Maas Siregar; Winsyahputra Ritonga; Dedi Surahman
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

This research aim to modify 60-70 penetration of bitumen with natural rubber (NR) and characterized the addition of NR. Samples for the physical properties requisite of asphalt was madeby using NR refluxed with xylene. Acrylate acid and benzoyl peroxidethen added as compatibilizer. NR used as much as 1 phr, 2 phr, 3 phr and 4 phr, asphalt 100 phr, acrylic acid0.25 phr and benzoyl peroxide 0.0045 phr. Each sample involved the requisite of theasphalt physical properties which consists of penetration, softening point, ductility, specific gravityand lose weighttest. After involving the asphalt physical properties, samples then made intospecimens with asphalt and aggregate mixture. The specimen is a mixture of aggregate with asphalt of 5%, 5.5% and 6%. Specimen strength was test by including density,stability and flow test. Specimen strength test have the maximum on density values about 2.355 g / cc to 6% bitumen content with addition of 2 phr of NR, on stabilityvalues about 1,679 kg to 5.5%bitumen content with addition of 1 phr of NR, and on flow values about 4.67 mm to 6 % bitumen content with addition of 1 phr of NR. Research result concluded that the asphalt can be modified with NR and the optimum asphalt strength obtained with the addition of 1 phr of NR. Keywords: Asphalt, Natural Rubber, Acrylic Acid, Benzoyl Peroxide.
ANALISIS STRUKTUR KRISTAL LIMBAH MAGNET PERMANEN BERBASIS BESI OKSIDA Cynthia Sagita; Mutia Delina; Erfan Handoko
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Has performed the initial characterization of BaFe12O19 wasted magnet (Barium Hexaferrite). Characterization has done by analyzing the crystal structure using X-Ray Difraction (XRD). The analysis showed that the sample is a single phase, namely BaFe12O19. Samples with a hexagonal crystal structure (space group P63 / mmc), lattice parameters a = b = 5.892 Ã…, c = 23.183 Ã… with and . Samples also have the atomic density of 5.32 and the unit cell volume 693.608 with a crystal size of 632.7 Ã…. The results showed BaFe12O19 wasted can be reused as a new magnet material. Key word: Barium Hexaferrite, magnet wasted, crystal structure and XRD.

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