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Ediman Ginting
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Journal : Jurnal Teori dan Aplikasi Fisika

 1 
PENGARUH SUHU PADA EKSTRAK DAUN CINCAU HIJAU (CYCLEA BARBATA MIERS) SEBAGAI INHIBITOR KOROSI BAJA PEGAS DAUN intan hani saputri; Ediman Ginting; Dwi Asmi
Jurnal Teori dan Aplikasi Fisika Vol 6, No 2 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i2.1848

Abstract

This study aims to determine the extract of green cincau leaves (Cyclea Barbata Miers) as a corrosion inhibitor soaked in 3% NaCl corrosive medium. To determine the effect of concentration and temperature to connect steel, the average inhibitor is 0, 2, 4, and 6% and each temperature is 40  and 80 . To find out the measurements done by the method, save weight. Corrosion rate at immersion temperature is 40  lower than speed at 80  immersion temperature. To find out the phase formed and the structure of the sample in XRD and SEM-EDS characterization. The X-Ray Diffraction (XRD) characterization results show that the phase formed is pure Fe. XRD results showed that the lowest Fe peaks were formed on samples without inhibitors at 80 .The results of SEM characterization of PGDaun-80-6 steel also showed that it looked more corroded, and the PGDaun-40-2 sample looked slightly corroded. This result is reinforced by the percentage of corrosion products shown in the EDS results
Efektivitas Ekstrak Daun Pepaya (Carica papaya L.) Sebagai Inhibitor pada Baja ST37 dalam Medium Korosif NaCl 3% dengan Variasi Waktu Perendaman ramon sanjaya; Ediman Ginting; Agus Riyanto
Jurnal Teori dan Aplikasi Fisika Vol 6, No 2 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i2.1839

Abstract

This research aims to determine the effectiveness of papaya leaf extract (carica papaya l) as  inhibitor on st37 steel in corrosive medium nacl 3 %. To find out the corrosion rate resulted by weight reduction method. To know the phase formed on steel is done XRD analysis. While, to know the micro structure and corrosion products produced on steel after soaked in corrosive medium with inhibitor and without inhibitor papaya leaf extract, SEM and EDS analysis were performed. Based on the results of XRD analysis, SEM and EDS with the addition of inhibitors of the diffraction peaks decreased, and the corroded surface area decreased, and the reduction of FeO content in the sample wass less. From the three analyzes and calculation of corrosion rate obtained that inhibitor papaya leaf extract, effectively inhibiting the corrosion rate on St37 Steel
Pengaruh Konsentrasi Ekstrak Kulit Buah Maja (Aegle Marmelos (l.) Corea) terhadap Laju Korosi Baja Karbon API 5L pada Medium NaCl 3% dan H2SO4 3% amilia rasitiani; Ediman Ginting; Pulung Karo karo
Jurnal Teori dan Aplikasi Fisika Vol 6, No 2 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v6i2.1837

Abstract

A study has been conducted on the extract concentration effect of Maja Peel as an inhibitor of low carbon API 5L in corrosive medium of NaCl 3% and H2SO4 3%. The soaking process of low carbon API 5L was done for 35 days with variation of addition inhibitor concentrations at 0%, 0,4%, 0,5%, 0,6%, 0,7%, and 0,8%. The testing of Corrosion rate is done by weight loss method. The results showed that the highest corrosive rate in corrosive medium of NaCl 3% and H2SO4 3% was at 0% which is inhibitor concentration, 0,06 x 104 mm/y and 16,55 x 104 mm/yconcentration. Meanwhile, the lowest corrosion rate at 0.8% inhibitor concentration for corrosive medium ofNaCl 3% and 0.5%for H2SO43% corrosive medium. Hence, the greatest effectiveness of corrosion occurs at the concentration of 0.8% in a corrosive medium of NaCl 3% with effectiveness of  85,71% and 0.5% in corrosive medium of H2SO4 3% with the effectiveness of 79.35%. The characterization result of X-Ray Diffraction (XRD) shows that the phase formed is pure Fe. Characterization of Scanning Electron Microscopy (SEM) showed uneven clusters and smaller sizes, holes and cracks also with less than 0.8% inhibitors for corrosive medium of NaCl 3% and 0.5% for corrosive medium of H2SO43% compared with 0% inhibitor of maja peel extract on corrosive medium ofNaCl 3% and H2SO4 3%. Characterization of Energy Dispersive Spectroscopy (EDS) in samples with corrosive medium of H2SO43% obtained the element S (Sulfate)
Pengaruh Penambahan Inhibitor Ekstrak Kopi Dan Waktu Perendaman Terhadap Laju Korosi Pada Baja Karbon Aisi 1020 Dalam Larutan Nacl 3% Hartono Simanjuntak; Ediman Ginting; Suprihatin Suprihatin
Jurnal Teori dan Aplikasi Fisika Vol 7, No 2 (2019): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v7i2.2109

Abstract

Ekstrak kopi yang digunakan sebagai inhibitor pada sampel baja karbon AISI 1020, direndam dalam medium korosif NaCl 3%. Dengan memvariasikan waktu perendaman 4 hari dan 8 hari, dan juga konsentrasi inhibitor 0%, 3%, 5% dan 7%. Setelah perlakuan pada sampel diperoleh hasil perhitungan laju korosi yang paling lambat pada sampel AISI 1020 8.7 dan yang paling cepat pada sampel AISI 1020 4.0. Inhibitor yang digunakan mempunyai nilai efisiensi paling tinggi pada sampel AISI 1020 4.7. Hasil karakterisasi XRD menunjukkan bahwa struktur kristal yang terbentuk merupakan fasa Fe murni. Karakterisasi SEM menunjukkan morfologi permukaan sampel, terlihat gumpalan pada sampel. Karakterisasi EDS pada sampel terlihat unsur Oksigen (O) yang mengindikasikan bahwa sampel telah terkorosi.
Co-Authors Agus Riyanto Amilia Rasitiani Dwi Asmi Endarmoko - Hartono Simanjuntak intan hani saputri Marjunus, Roniyus Pulung Karo-Karo ramon sanjaya Suprihatin Suprihatin