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SIFAT MEKANIK DAN STRUKTUR MIKRO PELAT TIPIS Zn HASIL ROL DINGIN UNTUK APLIKASI ANODA KORBAN Zn薄板的机械性质和结构为受害者的ANODA应用程序采用冷辊
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I2.279
Saefudin Saefudin, Galih Senopati
{"title":"SIFAT MEKANIK DAN STRUKTUR MIKRO PELAT TIPIS Zn HASIL ROL DINGIN UNTUK APLIKASI ANODA KORBAN","authors":"Saefudin Saefudin, Galih Senopati","doi":"10.14203/METALURGI.V29I2.279","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I2.279","url":null,"abstract":"MICRO STRUCTURE AND MECHANICAL PROPERTIES OF COLD ROLLED THIN ZINC PLATE FOR SACRIFICIAL ANODE APPLICATION. Cathodic protection by sacrificial Zn anodes is often applied to prevent metallic structure from corrosion in seawater. Zn sacrificial anodes can manufactured by casting and continued with cold rolling process. The purpose of this research is to produce Zn thin plate as sacrificial Zn anode raw material that free from deffect at laboratorium scale. Zn plate processed by casting and rolling with 1 mm thick then caracterized use vicker’s hardness tester and SEM-EDS (scanning electron microscopy-energy dispersive spectroscopy). The highest hardness value of Zn plate 1 mm thick is 95.63 VHN average. Zn plate which it has high hardness value formed ZnFeAl particle cause brittle properties of Zn plate.","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"91-96"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41969334","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
PENGARUH PENAMBAHAN MOLIBDENUM TERHADAP MORFOLOGI STRUKTUR MIKRO, SIFAT MEKANIK DAN KETAHANAN KOROSI PADUAN Zr-Nb UNTUK MATERIAL IMPLAN 警告钼的生长与金属结构微观、机械应力和Zr-Nb路径腐蚀对被植入材料的持续性有关
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/metalurgi.v29i1.267
Sulistioso Giat Sukaryo, B. Badriyana, Pius Sebleku
{"title":"PENGARUH PENAMBAHAN MOLIBDENUM TERHADAP MORFOLOGI STRUKTUR MIKRO, SIFAT MEKANIK DAN KETAHANAN KOROSI PADUAN Zr-Nb UNTUK MATERIAL IMPLAN","authors":"Sulistioso Giat Sukaryo, B. Badriyana, Pius Sebleku","doi":"10.14203/metalurgi.v29i1.267","DOIUrl":"https://doi.org/10.14203/metalurgi.v29i1.267","url":null,"abstract":"INFLUENCE OF MOLIBDENUM ON MICROSTRUCTURE CHARACTERISTIC, MECHANICAL PROPERTIES AND CORROSION RESISTANCE OF Zr-Nb ALLOY FOR IMPLANT MATERIAL. Zr-Nb alloy is an alloy that widely used for bio-implants. The addition of other elements in the Zr-Nb-based alloys such as molybdenum will increase the mechanical properties and corrosion resistance. This research was conducted with the aimed to observe the characteristic of morphology of the microstructure, mechanical properties and corrosion resistance of the Zr-Nb alloys with and without molybdenum addition. The composition of the alloy was Zr-2.5 wt.% Nb and Zr-2.5 wt.% Nb-0.5 wt.% Mo, where molybdenum was added to the alloy in the melting process using an electric arc furnace. Ingot of Zr-2.5 wt.% Nb and Zr-2.5 wt.% Nb-0.5 wt.% Mo alloys were then tested in Vickers micro hardness, metallographic with optical microscopy (OM) and SEM (scanning electron microscopy), XRD (X -ray diffraction) and environmental corrosion test in simulated body fluid (SBF). Results showed that the structure of α-Zr phase was formed and distributed homogeneously in fine-grain. The corrosion rate of the Zr-2.5 wt.% Nb alloy was 0.1023 mpy, whereas after the addition of molybdenum the corrosion rate of Zr-2.5 wt.% Nb-0.5 wt.% Mo alloy was decreased to 0.089 mpy. This occurred due to the formation of a thin layer of zirconium and molybdenum oxide as surface protection. The hardness of Zr-2.5 wt.% Nb alloy reached 183 VHN and increased to 230 VHN after the addition of 0.5 wt.% Mo. The phenomenon of grain refinement resulting in high dislocation density in the alloy of Zr-2.5 wt.% Nb-0.5 wt.% Mo.","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"17-26"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49575223","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
ANALISIS KERUSAKAN TUBE THERMOCOUPLE PADA REAKTOR HYDROCRACKING DI KILANG PENGOLAHAN MINYAK BUMI
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I2.283
H. Sunandrio
{"title":"ANALISIS KERUSAKAN TUBE THERMOCOUPLE PADA REAKTOR HYDROCRACKING DI KILANG PENGOLAHAN MINYAK BUMI","authors":"H. Sunandrio","doi":"10.14203/METALURGI.V29I2.283","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I2.283","url":null,"abstract":"","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"119-128"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42688542","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
PENGARUH TEMPERATUR DAN pH AIR SADAH KALSIUM SULFAT TERHADAP KOROSI PADA BAJA KARBON 温度和pH值硫酸钙对碳钢腐蚀的影响
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I1.270
Sundjono Sundjono, Saefudin Saefudin
{"title":"PENGARUH TEMPERATUR DAN pH AIR SADAH KALSIUM SULFAT TERHADAP KOROSI PADA BAJA KARBON","authors":"Sundjono Sundjono, Saefudin Saefudin","doi":"10.14203/METALURGI.V29I1.270","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I1.270","url":null,"abstract":"","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"41-50"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46457571","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: 4
STUDI KONDUKTIVITAS ARUS BOLAK-BALIK MATERIAL Ca3Co2O6 研究或BOLT-BAL材料Ca3Co2O6的导电性
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/metalurgi.v29i2.280
S. Yudanto
{"title":"STUDI KONDUKTIVITAS ARUS BOLAK-BALIK MATERIAL Ca3Co2O6","authors":"S. Yudanto","doi":"10.14203/metalurgi.v29i2.280","DOIUrl":"https://doi.org/10.14203/metalurgi.v29i2.280","url":null,"abstract":"","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"97-102"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46522456","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
STUDI PERILAKU PELINDIAN TIMBAL DARI BIJIH GALENA NANGGUNG KABUPATEN BOGOR DALAM LARUTAN ASAM ASETAT DAN OKSIDATOR HIDROGEN PEROKSIDA 我一直在研究一个浮场，以便在六年的醋酸盐和氢氧化物氧化中建造一个浮桩。
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I1.271
Zaki Mubarok, Yahya Yahya
{"title":"STUDI PERILAKU PELINDIAN TIMBAL DARI BIJIH GALENA NANGGUNG KABUPATEN BOGOR DALAM LARUTAN ASAM ASETAT DAN OKSIDATOR HIDROGEN PEROKSIDA","authors":"Zaki Mubarok, Yahya Yahya","doi":"10.14203/METALURGI.V29I1.271","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I1.271","url":null,"abstract":"STUDY ON THE LEACHING BEHAVIOUR OF LEAD FROM GALENA ORE OF NANGGUNG BOGOR DISTRICT AREA IN ACETIC ACID SOLUTION USING HYDROGEN PEROXIDE AS OXIDIZING AGENT. In the present paper, the results of lead leaching from galena ore received from Nanggung Bogor Regency in acetic acid solution with the presence of hydrogen peroxide as oxidizing agent are presented. Series of bath agitation leaching tests at atmospheric pressure have been carried out to investigate the influences of acetic acid and hydrogen peroxide concentrations, leaching temperature and stirring speed on the extraction percentage of lead. Leaching kinetics was studied at temperatures of 30, 40 and 50 °C by using shrinking core model to determine rate constant, rate determining step and activation energy for lead leaching. The investigation results have demonstrated that lead extraction from galena ore can be well performed by direct leaching of the ore in acetic acid solution in the presence of hydrogen peroxide as oxidizing agent at atmospheric pressure. The highest lead extraction level of 92.3% was obtained from the leaching test with acetic acid and hydrogen peroxide concentrations of 3 and 0.5 molar, respectively, leaching temperature of 50 °C, stirring speed 200 rpm, ore particle size distribution -200 mesh after 90 minute. The hydrogen peroxide concentration must be maintained at certain level in order to avoid the precipitation of lead sulfate that resulted in the decrease of lead extraction percentage. The result of kinetics study revealed that the leaching rate of lead from West Java galena ore in acetit acid and H2O2 solution is controlled by interface reaction with activation energy of 54.52 kJ/mole.","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"51-62"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48134763","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 MULTI PASS HIGH ENERGY MILLING ON MORPHOLOGY AND RHEOLOGICAL PROPERTIES OF CARBON NANOTUBES 多道次高能铣削对碳纳米管形貌和流变性能的影响
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I2.281
N. Darsono
{"title":"EFFECT OF MULTI PASS HIGH ENERGY MILLING ON MORPHOLOGY AND RHEOLOGICAL PROPERTIES OF CARBON NANOTUBES","authors":"N. Darsono","doi":"10.14203/METALURGI.V29I2.281","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I2.281","url":null,"abstract":"EFFECT OF MULTI PASS HIGH ENERGY MILLING ON MORPHOLOGY AND RHEOLOGICAL PROPERTIES OF CARBON NANOTUBES. Multi pass high energy milling was utilized in order to cut and disperse carbon nanotubes (CNTs) suspension. The purpose is to maintain the crystallinity and suppress the damage. One until five passes gave increase in Dto G-band ratio which means increasing the damage, at the value range from 0.1 to 0.2. The ratio is still lower compare 2-hour high energy milling and 120-hour conventional ball milling, at the value of 0.5 – 0.3. The rheological properties was not altered dramatically. It is indicated that the milling only tears down the aggeregates into small fraction of entangled CNTs treads.","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"103-110"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43601963","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
PENGARUH OIL SPILL DISPERSANT TERHADAP KOROSI PADA STRUKTUR BAJA KONSTRUKSI DI LINGKUNGAN AIR LAUT 油膏对海水环境钢结构腐蚀的影响
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I2.284
Rahardjo Binudi, Sundjono Sundjono
{"title":"PENGARUH OIL SPILL DISPERSANT TERHADAP KOROSI PADA STRUKTUR BAJA KONSTRUKSI DI LINGKUNGAN AIR LAUT","authors":"Rahardjo Binudi, Sundjono Sundjono","doi":"10.14203/METALURGI.V29I2.284","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I2.284","url":null,"abstract":"","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"129-138"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47795099","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
MONASITE BANGKA DAN ALTERNATIF PROSES PENGOLAHANNYA 体内的植物和处理程序的交替处理
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I1.274
Rudi Subagja
{"title":"MONASITE BANGKA DAN ALTERNATIF PROSES PENGOLAHANNYA","authors":"Rudi Subagja","doi":"10.14203/METALURGI.V29I1.274","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I1.274","url":null,"abstract":"","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"79-90"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44150557","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: 3
PROSES PEMBUATAN MATERIAL SUPERKONDUKTOR BSCCO DENGAN METODA PADATAN BSCCO超导体材料的改进工艺
IF 0.6
Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I1.265
Lusiana Lusiana
{"title":"PROSES PEMBUATAN MATERIAL SUPERKONDUKTOR BSCCO DENGAN METODA PADATAN","authors":"Lusiana Lusiana","doi":"10.14203/METALURGI.V29I1.265","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I1.265","url":null,"abstract":"","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"1-8"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43634644","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: 4
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