Jurnal Sains Materi Indonesia最新文献_第3页

THE EFFECT OF MILLING TIME AND PERCENTAGE OF DISPERSING AGENT ON THE CHARACTERISTIC OF SOLVENT-BASED BLACK PAINT FROM CARBON BLACK PIGMENT 研究了研磨时间和分散剂用量对炭黑颜料溶剂型黑漆性能的影响

Jurnal Sains Materi Indonesia Pub Date : 2020-12-15 DOI: 10.17146/JSMI.2020.21.4.5984

R. Ratnawati, Joko Noveriarto, A. S. Handayani, I. Purwaningsih, I. Hendrawan

{"title":"THE EFFECT OF MILLING TIME AND PERCENTAGE OF DISPERSING AGENT ON THE CHARACTERISTIC OF SOLVENT-BASED BLACK PAINT FROM CARBON BLACK PIGMENT","authors":"R. Ratnawati, Joko Noveriarto, A. S. Handayani, I. Purwaningsih, I. Hendrawan","doi":"10.17146/JSMI.2020.21.4.5984","DOIUrl":"https://doi.org/10.17146/JSMI.2020.21.4.5984","url":null,"abstract":"THE EFFECT OF MILLING TIME AND PERCENTAGE OF DISPERSING AGENT ON THE CHARACTERISTIC OF SOLVENT-BASED BLACK PAINT FROM CARBON BLACK PIGMEN. The need for black paint made from carbon black pigment increasing year by year especially in the automotive world. The production of black paint is performed by milling the resin, pigment, additive/dispersing agent, and solvent. In the manufacturing process, it takes a relatively long time with precise dispersing agent composition toward pigment to get the product with blackness/solid black according to the expected quality. This work aims to study the role of the milling time of carbon black fw 200 beads on a 3 liter ball mill and the percentage of dispersing agents on paint color quality, especially blackness. The variations in milling time were 36, 48, and 60 hours and the weight percentage of dispersing agent toward pigment were 80%, 100%, and 120%. The optimum results obtained are at the milling time of 48 hours and on the percentage of dispersing agent of 120% with the product characteristics fulfills the requirement namely: 10 μm of particle fineness, 111.5 krebs unit of viscosity, 36.97% of solid content, 0.9839 gr/cc of specific gravity with desirable solid black color.","PeriodicalId":365391,"journal":{"name":"Jurnal Sains Materi Indonesia","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114424953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EFFECT OF ULTRASONIC TREATMENT ON THE CONSOLIDATION OF ODS STEEL FeCrY2O3 PROCESSING WITH CAPSULATED SINTERING PROCESS. 超声处理对封装烧结ODS钢fery2o3固结的影响。

Jurnal Sains Materi Indonesia Pub Date : 2020-12-15 DOI: 10.17146/JSMI.2020.21.4.5969

M. Silalahi, B. Bandriyana, Harum Andriadi Bayu, B. Sugeng, R. Salam

{"title":"EFFECT OF ULTRASONIC TREATMENT ON THE CONSOLIDATION OF ODS STEEL FeCrY2O3 PROCESSING WITH CAPSULATED SINTERING PROCESS.","authors":"M. Silalahi, B. Bandriyana, Harum Andriadi Bayu, B. Sugeng, R. Salam","doi":"10.17146/JSMI.2020.21.4.5969","DOIUrl":"https://doi.org/10.17146/JSMI.2020.21.4.5969","url":null,"abstract":"EFFECT OF ULTRASONIC TREATMENT ON THE CONSOLIDATION OF ODS STEEL FeCrY2O3 PROCESSING WITH CAPSULATED SINTERING PROCESS. A new method on the synthesis of ODS (Oxide Dispersion Strengthened) steel for advanced nuclear material was performed by ultrasonic treatment to improve the consolidation process. The raw material of Fe, Cr and Y2O3powder with the composition of Fe-15 wt% Cr, 0.5 wt% and Ytria (Y2O3) as disperzoid were processed by the powder metallurgy method with the main process of pre-alloying, iso-compaction and sintering process. The pre-alloying process was carried out by mixing the alloying elements using ultrasonically treatment at frquency of 20 kHz with variation of 40, 50 and 60 % amplitude. Iso-compaction process was done using the load of 800 psi to obtain a pellet-shaped sample, then continued by the sintering process for consolidation. The sintering process was done in two stages, 1-step sintering and 2-steps sintering, using the heating furnace by putting the sample in a quartz capsule to prevent oxidation attack. Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS), X-ray Diffraction (XRD), and Micro-hardness tests were carried out to analyze the microstructure and phase formation in relation to the consolidation process. The highest hardness occurred in the addition of treatment with an amplitude of 60% which produces a micro structure with the most fine grain. For 1-step sintering process, the highest hardness of 134.51 VHN obtained at 40 % amplitude. The hardness of the alloy depends on the size of the grain boundary associated with the difficulty of the dislocation movement.","PeriodicalId":365391,"journal":{"name":"Jurnal Sains Materi Indonesia","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114471934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RADIATION SYNTHESIS OF POLY(VINYL ALCOHOL) PVA–(POLYVINYL PYRROLIDONE) PVP FOR IMMOBILIZATION OF CAPTOPRIL 聚乙烯醇pva -聚乙烯醇吡咯烷酮PVP的辐射合成固定化卡托普利

Jurnal Sains Materi Indonesia Pub Date : 2020-12-15 DOI: 10.17146/JSMI.2020.21.4.5943

H. Hariyanti, E. Erizal, M. Yunus, I. Lestari, Ditri Risska Rahmadhani

{"title":"RADIATION SYNTHESIS OF POLY(VINYL ALCOHOL) PVA–(POLYVINYL PYRROLIDONE) PVP FOR IMMOBILIZATION OF CAPTOPRIL","authors":"H. Hariyanti, E. Erizal, M. Yunus, I. Lestari, Ditri Risska Rahmadhani","doi":"10.17146/JSMI.2020.21.4.5943","DOIUrl":"https://doi.org/10.17146/JSMI.2020.21.4.5943","url":null,"abstract":"RADIATION SYNTHESIS OF PVA POLY(VINYL ALCOHOL)–PVP (POLYVINYLPYRROLIDONE) for IMMOBILIZATION OF CAPTOPRIL. The aim of this work is to prepare Polyvinyl alcohol (PVA)- Polyvinylpyrrolidone (PVP) hydrogel with varying irradiation doses and drug dose to be used as a matrix for immobilization and control drug release of captopril. Immobilization and release of captopril in PVA-PVP hydrogel copolymer have been carried out. A mixture of PVA-PVP (6:4 w/w) solution containing captopril (10-20 mg), freeze-thawing, irradiated using gamma rays at various irradiation doses (0-20 kGy). The gel fraction and water absorption were determined gravimetrically. The pores structure of hydrogels were observed using SEM (Scanning Electron Microscope). The captopril released from hydrogel in NaCl 0.9% solution was measured using a UV-Vis spectrophotometer. After evaluated, it was found that with increasing dose up to 20 kGy, the gel fraction increases, and water absorption decreases, and the cumulative drug released decreases. SEM measurement showed that hydrogel had heterogeneous pores. PVA-PVP hydrogel prepared using gamma rays can be considered as a matrix for drug release.","PeriodicalId":365391,"journal":{"name":"Jurnal Sains Materi Indonesia","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127887892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SYNTHESIS AND CHARACTERIZATION OF LiFePO4/PPy/CLAY COMPOSITE AS CATHODE MATERIAL FOR Li-ION BATTERY 锂离子电池正极材料LiFePO4/PPy/粘土复合材料的合成与表征

Jurnal Sains Materi Indonesia Pub Date : 2020-07-05 DOI: 10.17146/jsmi.2020.21.2.5805

I. Gunawan, Yustinus P, S. Sudaryanto, J. Ginting

{"title":"SYNTHESIS AND CHARACTERIZATION OF LiFePO4/PPy/CLAY COMPOSITE AS CATHODE MATERIAL FOR Li-ION BATTERY","authors":"I. Gunawan, Yustinus P, S. Sudaryanto, J. Ginting","doi":"10.17146/jsmi.2020.21.2.5805","DOIUrl":"https://doi.org/10.17146/jsmi.2020.21.2.5805","url":null,"abstract":"SYNTHESIS AND CHARACTERIZATION OF LiFePO4/PPy/CLAY COMPOSITE AS CATHODE MATERIAL FOR Li-ION BATTERY. Conductor polymers have been used previously as a conducting agent or carbon source in various sol-gel and solid state methods to increase the conductivity of LiFePO4. The composite of LiFePO4/PPy/Clay were synthesized by mixing LiFePO4 and clay with a Ppy solution. The characterizations were done by using X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM) and LCR meter respectively. From XRD analysis it could be deduced that LiFePO4 has an ordered olivine structure with a Pnma space group. The SEM images provide clear evidence that small crystal particles of LiFePO4 either coat the surface of the clay particles or lie among them. These LiFePO4 particles have a small particle size (100–500 nm). With the increasing of LiFePO4 content, these small crystal particles at the surface or among the clay particles are increased. Increasing the PPy content to increase the conductivity of the material obtained. With the addition of clay from 5 to 10 wt. %, the DC conductivity of the blends is clearly observed to increase up to three orders of magnitude.","PeriodicalId":365391,"journal":{"name":"Jurnal Sains Materi Indonesia","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133145037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SURFACE MODIFICATION OF TEMPO-MEDIATED CELLULOSE NANOFIBRIL WITH OCTADECYLAMINE 十八胺对时间介导的纳米纤维素表面改性研究

Jurnal Sains Materi Indonesia Pub Date : 2019-07-30 DOI: 10.17146/jsmi.2019.20.4.5308

N. Masruchin, A. Nuryawan, W. B. Kusumaningrum, S. Sudarmanto, L. Astari, P. Amanda, R. Marlina, L. Suryanegara

引用次数: 0

OPTIMIZATION OF MECHANICAL STRENGTH AND MICROSTRUCTURE ON AUSTEMPERING ZINC HEAT TREATMENT IN LATERITIC NICKEL STEELS 红土镍钢等温锌热处理的力学强度和组织优化

Jurnal Sains Materi Indonesia Pub Date : 2019-07-30 DOI: 10.17146/jsmi.2019.20.4.4660

Satrio Herbirowo, Setyo Hartadi, R. Widodo, B. Adjiantoro

引用次数: 1

ANALYSIS OF MICROSTRUCTURE AND HARDNESS OF WELDED JOINTS OF DISSIMILAR STEEL OF AISI 1018 - AISI 304 aisi 1018 - aisi 304异种钢焊接接头显微组织及硬度分析

Jurnal Sains Materi Indonesia Pub Date : 2019-07-30 DOI: 10.17146/jsmi.2019.20.4.5280

G. Gumilar, Imin Abdulah, R. Suratman, A. Setiawan

{"title":"ANALYSIS OF MICROSTRUCTURE AND HARDNESS OF WELDED JOINTS OF DISSIMILAR STEEL OF AISI 1018 - AISI 304","authors":"G. Gumilar, Imin Abdulah, R. Suratman, A. Setiawan","doi":"10.17146/jsmi.2019.20.4.5280","DOIUrl":"https://doi.org/10.17146/jsmi.2019.20.4.5280","url":null,"abstract":"This research studies the microstructure and hardness property of shield metal arc welding (SMAW) from dissimilar metals between austenitic stainless steel (SS) AISI 304 and low carbon steel (LCS) AISI 1018 using E308 filler metal. The procedure used was LCS-to-LCS welding carried out without post weld heat treatment (PWHT) and SS-to-SS welding followed by PWHT at a temperature of 1000UC and holding time for 12 minutes. Then, it was followed by shock cooling in aqueous media. The difference in PWHT stages in the two procedures is expected to affect the microstructure and hardness of the welding results. This was conducted to find out more precise procedures in the SMAW technique for welding dissimilar metals like AISI 304 with AISI 1018 so that the risk of chromium carbide precipitate formation and the low hardness of welded joints can be reduced. The results showed there were chromium carbide precipitates in the heat-affected zone (HAZ) of AISI 304, grain enlargement in the HAZ area of both steels, as well as the formation of the ferrite delta phase in the welding area by LCS-to-LCS welding. While the value of hardness in the HAZ area of AISI 304 has decreased, increases occur in the HAZ area of AISI 1018 in all welding conditions. In addition, PWHT treatment can increase the hardness on the AISI 1018 side due to the formation of the martensite phase, decrease in the hardness value on the AISI 304 side, and the reduced ferrite delta phase and the number of chromium carbide precipitates.","PeriodicalId":365391,"journal":{"name":"Jurnal Sains Materi Indonesia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130698183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

DEPOSITION OF YTTRIA-STABILIZED ZIRCONIA CERAMIC ON SS316L BY PULSED SOLID-STATE ND:YAG LASER 脉冲固态yag激光在ss316l上沉积钇稳定氧化锆陶瓷

Jurnal Sains Materi Indonesia Pub Date : 2019-07-30 DOI: 10.17146/JSMI.2019.20.4.5521

M. Panitra, A. K. Rivai

{"title":"DEPOSITION OF YTTRIA-STABILIZED ZIRCONIA CERAMIC ON SS316L BY PULSED SOLID-STATE ND:YAG LASER","authors":"M. Panitra, A. K. Rivai","doi":"10.17146/JSMI.2019.20.4.5521","DOIUrl":"https://doi.org/10.17146/JSMI.2019.20.4.5521","url":null,"abstract":"Austenitic stainless steel in general has a limited service temperature up to 600°C. Nevertheless, service temperature more than that temperature are one of the key feature of advanced nuclear reactors to gain higher thermal efficiency which is related to economic beneficial, and also to withstand from abnormal condition. However, austenitic stainless steel such as SS316 class is well-known structure material for nuclear power reactors and other power plants. Therefore, one of the key issue is to modify SS316 so that has capability to service higher temperature. One of the technique for that purpose is ceramic-coated SS316L. In this preliminary study, thin films of zirconia-based ceramic i.e. YSZ (Yttria-Stabilized Zirconia) have been deposited on a SS316L using Plasma-Pulsed Laser Deposition (PLD) at Center For Science and Technology of Advanced Materials laboratory – National Nuclear Energy Agency of Indonesia (BATAN). Thin film was deposited with the constant oxygen flow injection of 20 and 40 sccm (Standard Cubic Centimeters per Minute) that produce a chamber pressure of 60 and 200 mTorr for the numbers of laser shots of 7.2×104 and 14.4×104, respectively. The substrate temperature during deposition was of 850oC. Afterward, the samples were analyzed using Optical Microscope, Scanning Electron Microscope – Energy Dispersive X-ray Spectroscope (SEM-EDS) and Atomic Force Microscope (AFM). The results showed that the YSZ could homogeneously and sticky deposited on the surface of the SS316L surface. The surfaces were very smoothly formed with the surface roughness in the nano-meter scale range of 20-90 nm.","PeriodicalId":365391,"journal":{"name":"Jurnal Sains Materi Indonesia","volume":"3 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113947100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EFFECTS OF STARCH-GLYCEROL CONCENTRATION RATIO ON MECHANICAL AND THERMAL PROPERTIES OF CASSAVA STARCH-BASED BIOPLASTICS 淀粉-甘油浓度比对木薯淀粉基生物塑料力学和热性能的影响

Jurnal Sains Materi Indonesia Pub Date : 2019-07-30 DOI: 10.17146/jsmi.2019.20.4.5505

A. H. Abdullah, O. Putri, Winda Windi Sugandi

{"title":"EFFECTS OF STARCH-GLYCEROL CONCENTRATION RATIO ON MECHANICAL AND THERMAL PROPERTIES OF CASSAVA STARCH-BASED BIOPLASTICS","authors":"A. H. Abdullah, O. Putri, Winda Windi Sugandi","doi":"10.17146/jsmi.2019.20.4.5505","DOIUrl":"https://doi.org/10.17146/jsmi.2019.20.4.5505","url":null,"abstract":"This study aimed to investigate the effects of different starch-glycerol concentration ratio on mechanical and thermal properties of cassava starch bioplastics. Bioplastics were prepared by mixing starch with glycerol at different starch-glycerol w/w ratio (2.5:1, 2.75:1, 3:1 and 3.5:1). Mechanical properties was evaluated by measuring tensile strength and elongation at break where thermal properties was assessed by thermogravimetric analysis to determine the glass transition temperature (Tg), melting temperature (Tm) and melting enthalpy (ΔHm) of bioplastics. Microstructure and chemical interactions in bioplastics were evaluated by SEM and FTIR. The surface hydrophobicity was determined by measuring the water contact angle. The increase of starch-glycerol concentration in bioplastics formed rough surface where the interaction of glycerol and starch molecules mainly occurred through hydrogen bonds. It also formed stronger and more rigid structure with the increase in tensile strength from 1.90 MPa to 2.47 MPa and the decrease in elongation at break from 8.55% to 5.92%. Furthermore, the increase of starch-glycerol concentration increased Tg from 37.5 ºC to 38.6 ºC, Tm from 96.3 ºC to 120.7 ºC and ΔHm from 100.4 J/g to 155 J/g. Moreover, surface contact angle of bioplastics was increased from 40.6º to 60.2º with the increase of starch-glycerol concentration ratio.","PeriodicalId":365391,"journal":{"name":"Jurnal Sains Materi Indonesia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129534363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

CORROSION BEHAVIOR OF Zr-10Mo ALLOYS IN NIOBIUM-DOPED LACTATE RINGER’S SOLUTION Zr-10Mo合金在掺铌乳酸林格氏溶液中的腐蚀行为

Jurnal Sains Materi Indonesia Pub Date : 2019-07-30 DOI: 10.17146/jsmi.2019.20.4.4627

Vita Yuliana Prastika, Pradoto Ambardi, D. Prajitno

{"title":"CORROSION BEHAVIOR OF Zr-10Mo ALLOYS IN NIOBIUM-DOPED LACTATE RINGER’S SOLUTION","authors":"Vita Yuliana Prastika, Pradoto Ambardi, D. Prajitno","doi":"10.17146/jsmi.2019.20.4.4627","DOIUrl":"https://doi.org/10.17146/jsmi.2019.20.4.4627","url":null,"abstract":"This research discusses the corrosion behavior of Zr-10Mo alloys in Niobium-doped lactate ringer ’s solution. The addition of Niobium of 1%, 3% and 5% on Zr-10Mo alloys aims to study the effect of adding Niobium to the hardness, microstructure and corrosion resistance of Zr-Mo alloys. The alloys are made by melting the materials of Zr, Mo and Nb with a certain percentage of weight using single arc melting furnace in Argon atmosphere with high purity and Tungsten eletrodes. The alloys (as cast) are subjected to hardness testing using C-scale rockwell, microstructure using optical microscopy, compounds and phases in the alloys (as cast) using XRD and corrosion testing using polarization method in lactate ringers’ solution. The hardness value increases by the addition of Niobium, Zr-10Mo-1Nb alloy of 34 HRC, Zr-10Mo-3Nb alloy of 38 HRC and Zr-10Mo-5Nb alloy of 41.5 HRC. The basketweave-shaped microstructure with the addition of Niobium creates relatively smaller grain size. The value of corrosion rate decrases by the addition of Niobium at the immersion times of 0 minute, 60 minutes and 120 minutes, Zr-10Mo-1Nb alloy of 4.208 mpy, Zr-10Mo-3Nb alloy of 3.538 mpy and Zr-10Mo-5Nb alloy of 2.813 mpy, included in the excellent category (1-5 mpy).","PeriodicalId":365391,"journal":{"name":"Jurnal Sains Materi Indonesia","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114976918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2