Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.J2017033
F. Kirino, K. Yokoyama, Mai Saigan, Miki Igari, H. Tsuchiura
Materials for a purple glass bottle manufactured in the late Edo–era were studied. The design on this purple glass bottle is a potted flower. Infrared light images show light refraction at the flower and soil areas. There is a contrast between the petal and the rim in these images. These results indicate that different materials were used in these parts. UV–light fluorescence images show weak fluorescence at the leaves and the stem. The glass of this bottle contains Pb, Si, and K as the main components and minor components of Mn, Fe, Na, and Al, as revealed by SEM–EDS analysis. The glass composition is not homogeneous as a result of the manufacturing process. The Si species measured by XRF is SiO2 and Pb is in the form of Pb3O4 according to X–ray diffraction measurement. Measurements of the decorated area indicate that Cu–Zn alloy is used in the area of the soil in the flowerpot, and SnO and SnO2 are corrosion products that exist on the surface of Sn thin film. The peak at 390 nm on the reflection spectrum corresponds to the purple color of this glass bottle. The results of XAFS measurement reveal that the oxidation state of Mn is a mixture of +2 and +3, that of Fe is +3, and that of Pb is +2. [doi:10.2320/jinstmet.J2017033]
{"title":"Study on Using Materials for a Purple Glass Bottle Manufactured at Edo -Era","authors":"F. Kirino, K. Yokoyama, Mai Saigan, Miki Igari, H. Tsuchiura","doi":"10.2320/JINSTMET.J2017033","DOIUrl":"https://doi.org/10.2320/JINSTMET.J2017033","url":null,"abstract":"Materials for a purple glass bottle manufactured in the late Edo–era were studied. The design on this purple glass bottle is a potted flower. Infrared light images show light refraction at the flower and soil areas. There is a contrast between the petal and the rim in these images. These results indicate that different materials were used in these parts. UV–light fluorescence images show weak fluorescence at the leaves and the stem. The glass of this bottle contains Pb, Si, and K as the main components and minor components of Mn, Fe, Na, and Al, as revealed by SEM–EDS analysis. The glass composition is not homogeneous as a result of the manufacturing process. The Si species measured by XRF is SiO2 and Pb is in the form of Pb3O4 according to X–ray diffraction measurement. Measurements of the decorated area indicate that Cu–Zn alloy is used in the area of the soil in the flowerpot, and SnO and SnO2 are corrosion products that exist on the surface of Sn thin film. The peak at 390 nm on the reflection spectrum corresponds to the purple color of this glass bottle. The results of XAFS measurement reveal that the oxidation state of Mn is a mixture of +2 and +3, that of Fe is +3, and that of Pb is +2. [doi:10.2320/jinstmet.J2017033]","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"15 1","pages":"44-51"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82347453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.J2017004
K. Hashi, A. Hibino
In order to analyze combustion synthesis of Cu-Al intermetallic compounds, Cu/Al premixed compacts were quenched during combustion synthesis, and the micro-structure was analyzed. And, in dipping experiments of Cu wire and Cu plate into molten Al, the formation reactions between solid Cu and molten Al were also investigated. A piece of Cu wire was put into a crucible, and Al powder was filled around the Cu wire. The crucible was inserted in a quartz tube, and was vacuum-sealed with 10-3Pa vacuum degree. The capsule was kept at 800-1000°C for 0-90 min. using an electric furnace. After the holding time, the cross-sections were observed by an optical microscope and SEM-EDX. Additionally, the dipping experiment of Cu plates into molten Al were also investigated by same method as Cu wire experiment. From the quenching of Cu/Al premixed compacts during the combustion synthesis, Cu3Al formation reaction between Cu particles and molten Al could be observed. The formation reaction was also found in the dipping experiments of Cu wire and Cu plate into molten Al. However, the formation rate and the composition of Cu3Al synthesized was depend on the contact surface shape between Solid Cu and molten Al. Furthermore, kinetics equations were derived for the Cu3Al formation reaction. [doi:10.2320/jinstmet.J2017004]
{"title":"Effect of Contact Surface Shape between Solid Cu and Molten Al to Synthesized Compound Phase ―In Order to Analyze Combustion Synthesis of Cu/Al Premixed Compact―","authors":"K. Hashi, A. Hibino","doi":"10.2320/JINSTMET.J2017004","DOIUrl":"https://doi.org/10.2320/JINSTMET.J2017004","url":null,"abstract":"In order to analyze combustion synthesis of Cu-Al intermetallic compounds, Cu/Al premixed compacts were quenched during combustion synthesis, and the micro-structure was analyzed. And, in dipping experiments of Cu wire and Cu plate into molten Al, the formation reactions between solid Cu and molten Al were also investigated. A piece of Cu wire was put into a crucible, and Al powder was filled around the Cu wire. The crucible was inserted in a quartz tube, and was vacuum-sealed with 10-3Pa vacuum degree. The capsule was kept at 800-1000°C for 0-90 min. using an electric furnace. After the holding time, the cross-sections were observed by an optical microscope and SEM-EDX. Additionally, the dipping experiment of Cu plates into molten Al were also investigated by same method as Cu wire experiment. From the quenching of Cu/Al premixed compacts during the combustion synthesis, Cu3Al formation reaction between Cu particles and molten Al could be observed. The formation reaction was also found in the dipping experiments of Cu wire and Cu plate into molten Al. However, the formation rate and the composition of Cu3Al synthesized was depend on the contact surface shape between Solid Cu and molten Al. Furthermore, kinetics equations were derived for the Cu3Al formation reaction. [doi:10.2320/jinstmet.J2017004]","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"24 1","pages":"366-375"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74802624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.JA201603
T. Koyama, Yuhki Tsukada, T. Abe, Yoshinao Kobayashi
The non - equilibrium phase - field method which has recently been proposed by Steinbach et al . was slightly modified, and the improved method was applied to the formation process of grain boundary phase （ GBP ） in the Nd 2 Fe 14 B polycrystalline microstruc ture of Fe - Nd - B hard magnet. In particular, we focused on the temporal evolution of morphological changes of GBP in this study, and the results obtained are as follows: （ 1 ） The Nd Fe grains are partially covered with GBP at early stage of aging, however the coverage decreases with aging by Ostwald ripening among GBPs. （ 2 ） The coverage area by GBP increases with increasing average composition of Nd in alloy. （ 3 ） The interfacial energy density between GBP and Nd 2 Fe 14 B phase greatly affects the morphological change of GBP. ［ doi:10 . 2320 / jinstmet.JA201603 ］ Published ）
{"title":"Phase-Field Simulation on the Formation of Grain Boundary Phase in Neodymium Hard Magnet","authors":"T. Koyama, Yuhki Tsukada, T. Abe, Yoshinao Kobayashi","doi":"10.2320/JINSTMET.JA201603","DOIUrl":"https://doi.org/10.2320/JINSTMET.JA201603","url":null,"abstract":"The non - equilibrium phase - field method which has recently been proposed by Steinbach et al . was slightly modified, and the improved method was applied to the formation process of grain boundary phase （ GBP ） in the Nd 2 Fe 14 B polycrystalline microstruc ture of Fe - Nd - B hard magnet. In particular, we focused on the temporal evolution of morphological changes of GBP in this study, and the results obtained are as follows: （ 1 ） The Nd Fe grains are partially covered with GBP at early stage of aging, however the coverage decreases with aging by Ostwald ripening among GBPs. （ 2 ） The coverage area by GBP increases with increasing average composition of Nd in alloy. （ 3 ） The interfacial energy density between GBP and Nd 2 Fe 14 B phase greatly affects the morphological change of GBP. ［ doi:10 . 2320 / jinstmet.JA201603 ］ Published ）","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"3 1","pages":"43-48"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78165486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.J2016041
R. Yoshimura, S. Nagaoka, Yasuhiro Nagatomo, H. Esaka, K. Shinozuka
The undercooling for nucleation and volume fraction of primary (β–Sn) phase has been investigated in Sn–X hypoeutectic alloys where X were Pb, Ag, Al, Bi, Cu and Zn. The purities of raw materials were 4N and the solute content of the alloy was set for the volume fraction of primary phase to be from 0.3 to 0.45, according to the equilibrium phase diagram. Thermal history was measured during solidification of 5 g alloy sample at a cooling rate of 0.05 K/s, with fine K–type thermocouple. The volume fraction of primary (β–Sn) phase was measured on the longitudinal cross section of the sample. When the solute elements were Pb, Ag, Al, Bi and Cu, the undercooling was more than 5K and was large. Furthermore, the volume fraction of primary (β–Sn) was larger than the equilibrium value. On the other hand, when the solute element was Zn, the undercooling for the nucleation of primary (β–Sn) was 0.9 K and quite small. In addition to this, the volume fraction of primary phase agreed with the equilibrium value. [doi:10.2320/jinstmet.J2016041]
{"title":"Undercooling for Nucleation and Volume Fraction of Primary β -Sn Phase in Sn-X Alloys","authors":"R. Yoshimura, S. Nagaoka, Yasuhiro Nagatomo, H. Esaka, K. Shinozuka","doi":"10.2320/JINSTMET.J2016041","DOIUrl":"https://doi.org/10.2320/JINSTMET.J2016041","url":null,"abstract":"The undercooling for nucleation and volume fraction of primary (β–Sn) phase has been investigated in Sn–X hypoeutectic alloys where X were Pb, Ag, Al, Bi, Cu and Zn. The purities of raw materials were 4N and the solute content of the alloy was set for the volume fraction of primary phase to be from 0.3 to 0.45, according to the equilibrium phase diagram. Thermal history was measured during solidification of 5 g alloy sample at a cooling rate of 0.05 K/s, with fine K–type thermocouple. The volume fraction of primary (β–Sn) phase was measured on the longitudinal cross section of the sample. When the solute elements were Pb, Ag, Al, Bi and Cu, the undercooling was more than 5K and was large. Furthermore, the volume fraction of primary (β–Sn) was larger than the equilibrium value. On the other hand, when the solute element was Zn, the undercooling for the nucleation of primary (β–Sn) was 0.9 K and quite small. In addition to this, the volume fraction of primary phase agreed with the equilibrium value. [doi:10.2320/jinstmet.J2016041]","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"40 1","pages":"80-88"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90755776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.JBW201608
A. Kobayashi, K. Nagayama
Liquid phase separation usually occurs in immiscible alloys under gravity. The drop tube and electromagnetic levitation pro - cesses, which are types of containerless processes, enable solidification melt without using a container. This would avoid heteroge neous nucleation induced by the container walls, thus obtaining undercooling conditions. The abovementioned processes have been used to study the undercooling solidification and metastable phase formation of the melt. Metastable miscibility gap is observed in the Fe ︲ Cu binary alloy; however, metastable phase formation in the wide composition range used by the drop tube process has never been reported. In this study, we obtained samples of Fe ︲ Cu binary alloy using a drop tube apparatus with a free fall length of 2 . 5 m and an electromagnetic levitation apparatus. In addition, we aimed to examine the effectiveness of the containerless process for microstructure formation of the Fe ︲ Cu binary alloy based on undercooling solidification. The results of the SEM and EDS analyses showed that the minor liquid phase, Fe or Cu, finely dispersed in the matrix of the major liquid phase of Fe 75 Cu 25 and Fe 25 Cu 75 particle samples, and the two or three layer structure of Fe 50 Cu 50 particle samples. In particular, all the samples exhibited a phase separation caused by the metastable miscibility gap and the dendrite growth of Fe phase with the decrease of the cooling rate.
非混相合金在重力作用下通常发生液相分离。滴管和电磁悬浮工艺是无容器工艺的类型，无需使用容器即可实现凝固熔体。这将避免由容器壁引起的异质神经形核，从而获得过冷条件。用上述方法研究了熔体的过冷凝固和亚稳相的形成。Fe︲Cu二元合金中存在亚稳混相间隙;然而，在广泛的组成范围内，亚稳相的形成，用滴管法从来没有报道过。在本研究中，我们使用自由落体长度为2的落管装置获得了Fe︲Cu二元合金样品。5米和一个电磁悬浮装置。此外，我们旨在研究基于过冷凝固的Fe︲Cu二元合金的无容器工艺的显微组织形成的有效性。SEM和EDS分析结果表明:Fe - 25和Fe - 25 Cu - 75的主液相和Fe - 50 Cu - 50的两层或三层结构的颗粒样品中，Fe - 25 Cu - 25和Fe - 25 Cu - 75颗粒样品的小液相Fe或Cu分散在基体中。特别是随着冷却速率的降低，所有样品都表现出由亚稳混相间隙和Fe相枝晶生长引起的相分离。
{"title":"Microstructure and solidification process of Fe-Cu immiscible alloy by using containerless process","authors":"A. Kobayashi, K. Nagayama","doi":"10.2320/JINSTMET.JBW201608","DOIUrl":"https://doi.org/10.2320/JINSTMET.JBW201608","url":null,"abstract":"Liquid phase separation usually occurs in immiscible alloys under gravity. The drop tube and electromagnetic levitation pro - cesses, which are types of containerless processes, enable solidification melt without using a container. This would avoid heteroge neous nucleation induced by the container walls, thus obtaining undercooling conditions. The abovementioned processes have been used to study the undercooling solidification and metastable phase formation of the melt. Metastable miscibility gap is observed in the Fe ︲ Cu binary alloy; however, metastable phase formation in the wide composition range used by the drop tube process has never been reported. In this study, we obtained samples of Fe ︲ Cu binary alloy using a drop tube apparatus with a free fall length of 2 . 5 m and an electromagnetic levitation apparatus. In addition, we aimed to examine the effectiveness of the containerless process for microstructure formation of the Fe ︲ Cu binary alloy based on undercooling solidification. The results of the SEM and EDS analyses showed that the minor liquid phase, Fe or Cu, finely dispersed in the matrix of the major liquid phase of Fe 75 Cu 25 and Fe 25 Cu 75 particle samples, and the two or three layer structure of Fe 50 Cu 50 particle samples. In particular, all the samples exhibited a phase separation caused by the metastable miscibility gap and the dendrite growth of Fe phase with the decrease of the cooling rate.","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"65 1","pages":"251-256"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81618404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.J2017015
Atsuhiro Suzuki, S. Oue, Shigeo Kobayashi, Hiroaki Nakano
To elucidate the synergistic effect of gelatin, thiourea and chloride ions on the surface roughness, throwing power and polarization curves for Cu deposition from electrorefining solution, Cu electrodeposition was performed at a current density of 200 A·m–2 and 5×105 C·m–2 of charge in an unagitated sulfate solution containing 0.708 mol・dm–3 of CuSO4 and 2.04 mol・dm–3 of H2SO4 at a temperature of 60°C. In solutions containing three kinds of additives such as gelatin, thiourea and chloride ions, the surface roughness of deposited Cu decreased with increasing the concentration of thiouea and gelatin and decreasing the chloride ions. On the other hand, the throwing power of deposited Cu was improved with decrease in thiourea and increase in gelatin in solutions containing three kinds of additives. The throwing power of deposited Cu was significantly improved in solution containing both gelatin and chloride ions. The polarization resistance dE/di for Cu deposition increased in solution containing both gelatin and chloride ions, which resulting in improvement of throwing power of Cu deposition. As small amounts of thiourea have a depolarization effect on Cu deposition, a leveling effect is expected owing to the promotion of deposition at recesses. [doi:10.2320/jinstmet.J2017015]
{"title":"Synergistic effect of additives on the surface roughness and throwing power of copper deposited from electrorefining solution","authors":"Atsuhiro Suzuki, S. Oue, Shigeo Kobayashi, Hiroaki Nakano","doi":"10.2320/JINSTMET.J2017015","DOIUrl":"https://doi.org/10.2320/JINSTMET.J2017015","url":null,"abstract":"To elucidate the synergistic effect of gelatin, thiourea and chloride ions on the surface roughness, throwing power and polarization curves for Cu deposition from electrorefining solution, Cu electrodeposition was performed at a current density of 200 A·m–2 and 5×105 C·m–2 of charge in an unagitated sulfate solution containing 0.708 mol・dm–3 of CuSO4 and 2.04 mol・dm–3 of H2SO4 at a temperature of 60°C. In solutions containing three kinds of additives such as gelatin, thiourea and chloride ions, the surface roughness of deposited Cu decreased with increasing the concentration of thiouea and gelatin and decreasing the chloride ions. On the other hand, the throwing power of deposited Cu was improved with decrease in thiourea and increase in gelatin in solutions containing three kinds of additives. The throwing power of deposited Cu was significantly improved in solution containing both gelatin and chloride ions. The polarization resistance dE/di for Cu deposition increased in solution containing both gelatin and chloride ions, which resulting in improvement of throwing power of Cu deposition. As small amounts of thiourea have a depolarization effect on Cu deposition, a leveling effect is expected owing to the promotion of deposition at recesses. [doi:10.2320/jinstmet.J2017015]","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"38 1","pages":"358-365"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85514123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.JAW201702
Y. Aihara, Y. Kamada, T. Murakami, Satoru Kobayashi, Hideo Watanabe
We investigated the microstructure, magnetic hysteresis properties, and micro ︲ Vickers hardness of nuclear reactor pressure vessel （ RPV ） steel cladded with austenitic stainless steel. Characterization of the crystalline structure by electron backscatter diffrac tion revealed the existence of a delta ferrite phase in the austenitic cladding, and the formation of coarse and fine grain microstruc - tures in the heat affected zone （ HAZ ） of the RPV steel. The block specimen was cut into small pieces and magnetic hysteresis loops were measured with a vibrating sample magnetometer. Although the saturation magnetization of the RPV steel was constant, the coercivity in the HAZ region decreased gradually as a function of distance from the weld fusion boundary. A linear correlation was confirmed between the coercivity and hardness. This study demonstrates the feasibility of a magnetic evaluation of hardness and microstructures in RPV steel. ［ doi:10 . 2320 / jinstmet.JAW201702 ］
{"title":"Correlation between magnetic hysteresis Properties and Vickers hardness in cladded reactor pressure vessel steel","authors":"Y. Aihara, Y. Kamada, T. Murakami, Satoru Kobayashi, Hideo Watanabe","doi":"10.2320/JINSTMET.JAW201702","DOIUrl":"https://doi.org/10.2320/JINSTMET.JAW201702","url":null,"abstract":"We investigated the microstructure, magnetic hysteresis properties, and micro ︲ Vickers hardness of nuclear reactor pressure vessel （ RPV ） steel cladded with austenitic stainless steel. Characterization of the crystalline structure by electron backscatter diffrac tion revealed the existence of a delta ferrite phase in the austenitic cladding, and the formation of coarse and fine grain microstruc - tures in the heat affected zone （ HAZ ） of the RPV steel. The block specimen was cut into small pieces and magnetic hysteresis loops were measured with a vibrating sample magnetometer. Although the saturation magnetization of the RPV steel was constant, the coercivity in the HAZ region decreased gradually as a function of distance from the weld fusion boundary. A linear correlation was confirmed between the coercivity and hardness. This study demonstrates the feasibility of a magnetic evaluation of hardness and microstructures in RPV steel. ［ doi:10 . 2320 / jinstmet.JAW201702 ］","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"2 1","pages":"475-479"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87598954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.JB201704
M. Nanko, Akira Gocho
{"title":"Auger Electron Microscopic Analysis on Microstructure of Inner Scale Developed with Steam Oxidation of Commercial 18Cr-8Ni Stainless Steels","authors":"M. Nanko, Akira Gocho","doi":"10.2320/JINSTMET.JB201704","DOIUrl":"https://doi.org/10.2320/JINSTMET.JB201704","url":null,"abstract":"","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"7 1","pages":"435-440"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86037434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.J2017013
Yue Gao, Toshiyuki Ishina, Ding Su, Jiu Jinting, T. Sugahara, S. Nagao, K. Suganuma
Copper nanowires （ CuNWs ） with low manufacture price and high electrical conductivity have been successfully synthesized by a simple hydrothermal process. The molecular weight of amine, which was used as surfactant, largely influenced the morphology of synthesis Cu products. As ︲ synthesized CuNWs were coated onto substrate and treated by intense pulse light （ IPL ） technique in ambient atmosphere. The instantaneous deoxidization and decomposition organics on the surface of the CuNWs contributed to the formation of transparent conductive film. A film with low sheet resistance of 13 . 4 Ω / □ and high transmittance of 79 ％ was obtained. Furthermore, stretchable conductor was also realized by coating the CuNWs onto flexible substrate and following IPL sintering treatment. ［ doi:10 . 2320 / jinstmet.J2017013 ］ （ Received Accepted 9, 2017; Published June 23, 2017 ）
{"title":"Composition of Copper Nanowires and Preparation of Transparent Conductive Film by Intense Pulse Light Sintering","authors":"Yue Gao, Toshiyuki Ishina, Ding Su, Jiu Jinting, T. Sugahara, S. Nagao, K. Suganuma","doi":"10.2320/JINSTMET.J2017013","DOIUrl":"https://doi.org/10.2320/JINSTMET.J2017013","url":null,"abstract":"Copper nanowires （ CuNWs ） with low manufacture price and high electrical conductivity have been successfully synthesized by a simple hydrothermal process. The molecular weight of amine, which was used as surfactant, largely influenced the morphology of synthesis Cu products. As ︲ synthesized CuNWs were coated onto substrate and treated by intense pulse light （ IPL ） technique in ambient atmosphere. The instantaneous deoxidization and decomposition organics on the surface of the CuNWs contributed to the formation of transparent conductive film. A film with low sheet resistance of 13 . 4 Ω / □ and high transmittance of 79 ％ was obtained. Furthermore, stretchable conductor was also realized by coating the CuNWs onto flexible substrate and following IPL sintering treatment. ［ doi:10 . 2320 / jinstmet.J2017013 ］ （ Received Accepted 9, 2017; Published June 23, 2017 ）","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"16 1","pages":"383-388"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87778423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.2320/JINSTMET.JE201601
T. Kinoshita, Yuzo Ishigaki
Continuous counter–current foam separation (CCFS), which features simultaneous injections of metal/surfactant solutions into the rising foam bed, was applied to the recovery of Pd(II) from hydrochloric acid solutions containing several other metals. In aqueous solutions a nonionic surfactant, poly (oxyethylene) monooleyl ether (POOPE), was added along with a series of thiodiglycolamide (TDGA) extractant as metal collector. Using tetrabutyl–TDGA, selective separation of Pd(II) was attained over the other metals, though the total amount of metal recovered in the foamate was small. This low recovery results from decreasing foam stability, which was ascertained by cavities in the foam bed, caused by the addition of organic extractant. Moreover, tetra–2–ethylhexyl– TDGA was tried and satisfactory separation could be attained; the percent recovery of Pd(II) was 95% with the enrichment 1.8 while the separation factors of Pd(II)/Pt (IV), Pd(II)/Fe(III), Pd(II)/Cu(II) and Pd(II)/Zn(II) were 518, 162, 635 and 209, respectively. [doi:10.2320/jinstmet.JE201601]
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