Janter Simanjuntak, B. Tambunan, J. Sihombing, Mohd Zamri Zainon, Nurin Wahidin Bint Mohd Zulkifli, Riduwan Riduwan
This study aims to obtain an alternative fuel from plastic pyrolytic oil (PPO) that has similar properties to gasoline and diesel fuel. The process carried out is distillation, which is heating the PPO at a certain temperature so that light and heavy molecules will evaporate and turn into distillate plastic oil (DPO). The effect of temperature on the quality of the DPO was observed based on the color of the obtained DPO. Temperatures ranging from 120 to 350 °C were examined in this study. The cleaner DPO was produced at a temperature of about 120 °C, which indicated a light molecule of hydrocarbon similar to gasoline, while a little dark color was produced when the temperature was increased to 350 °C, which indicated heavy molecules of hydrocarbon similar to diesel. This research shows that distillation can produce alternative fuels with different grades depending on the applied operating temperature.
{"title":"Pyrolytic Plastic Oil Distillation Study of Five Mixed Plastic Waste Pyrolysis","authors":"Janter Simanjuntak, B. Tambunan, J. Sihombing, Mohd Zamri Zainon, Nurin Wahidin Bint Mohd Zulkifli, Riduwan Riduwan","doi":"10.4028/p-9tuu9g","DOIUrl":"https://doi.org/10.4028/p-9tuu9g","url":null,"abstract":"This study aims to obtain an alternative fuel from plastic pyrolytic oil (PPO) that has similar properties to gasoline and diesel fuel. The process carried out is distillation, which is heating the PPO at a certain temperature so that light and heavy molecules will evaporate and turn into distillate plastic oil (DPO). The effect of temperature on the quality of the DPO was observed based on the color of the obtained DPO. Temperatures ranging from 120 to 350 °C were examined in this study. The cleaner DPO was produced at a temperature of about 120 °C, which indicated a light molecule of hydrocarbon similar to gasoline, while a little dark color was produced when the temperature was increased to 350 °C, which indicated heavy molecules of hydrocarbon similar to diesel. This research shows that distillation can produce alternative fuels with different grades depending on the applied operating temperature.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376057","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}
Prapanphong Somsila, Eakpoom Boonthum, Aphainun Namkhet, U. Teeboonma
Drying process are important in many areas in the agriculture and food sectors, including increasing shelf life, improving transportability by reducing product weight or adding value to products. However, the main problem in the drying process is the relatively high energy consumption. Therefore, the development of energy-saving dryers is necessary. Based on the above reasons, this research aims to study the performance enhancement of heat pump dryers using R32 refrigerant by using heat recovery and nanofluid. The heat that is exhausted from the refrigerant by a heat exchanger. In this work, a Nano titanium dioxide (Ti2O3) was selected. Pork was dried under the conditions of drying temperature of 45, 50 and 55 °C and water flow rate in the heat exchanger at the front of the drying chamber of 2, 3 and 4 L/min. Criteria for evaluating heat pump dryer performance include drying rate, specific moisture extraction rate, specific energy consumption, heat pump dryer performance coefficient compared to heat pump dryers without nanofluid. The results showed that increasing the drying temperature and water flow rate in heat exchanger increased the drying rate, power and specific moisture extraction rate in the heat pump dryer using nanofluid. Whereas, the specific energy consumption was lower than the case without nanofluid. Increasing the drying temperature and the water flow rate in the heat exchanger had relatively little effect on the coefficient of performance (COP) of the heat pump dryer. Moreover, the study found that the coefficient of performance of heat pump dryer with nanofluid was in the range of 4.33 - 4.42.
{"title":"Improving Efficiency of Heat Pump Dryer Using R32 Refrigerant by Nanofluid","authors":"Prapanphong Somsila, Eakpoom Boonthum, Aphainun Namkhet, U. Teeboonma","doi":"10.4028/p-ol1box","DOIUrl":"https://doi.org/10.4028/p-ol1box","url":null,"abstract":"Drying process are important in many areas in the agriculture and food sectors, including increasing shelf life, improving transportability by reducing product weight or adding value to products. However, the main problem in the drying process is the relatively high energy consumption. Therefore, the development of energy-saving dryers is necessary. Based on the above reasons, this research aims to study the performance enhancement of heat pump dryers using R32 refrigerant by using heat recovery and nanofluid. The heat that is exhausted from the refrigerant by a heat exchanger. In this work, a Nano titanium dioxide (Ti2O3) was selected. Pork was dried under the conditions of drying temperature of 45, 50 and 55 °C and water flow rate in the heat exchanger at the front of the drying chamber of 2, 3 and 4 L/min. Criteria for evaluating heat pump dryer performance include drying rate, specific moisture extraction rate, specific energy consumption, heat pump dryer performance coefficient compared to heat pump dryers without nanofluid. The results showed that increasing the drying temperature and water flow rate in heat exchanger increased the drying rate, power and specific moisture extraction rate in the heat pump dryer using nanofluid. Whereas, the specific energy consumption was lower than the case without nanofluid. Increasing the drying temperature and the water flow rate in the heat exchanger had relatively little effect on the coefficient of performance (COP) of the heat pump dryer. Moreover, the study found that the coefficient of performance of heat pump dryer with nanofluid was in the range of 4.33 - 4.42.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374337","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}
Anisotropic conductive film (ACF) is frequently used in the packaging manufacture for fine-pitch conductivity and interconnection, maintaining the electrical and mechanical connections between micro-electrodes. A key determinant of good conductivity is the deformation, fatigue, and breakage of conductive particles within the ACF packaging. This study aims to measure the resistance changes of specific conductive channels and observe the microscopic fatigue damage of compressed ACF conductive particles through the fabrication of Flex Printed Circuits (FPC) / Indium Tin Oxide-coated Polycarbonate (ITO-coated PC) specimens and the setup of bending experiments. The results show that the deformation, fatigue, and breakage of conductive particles will quantitatively affect electrical conductivity performance. By microscopically observing the breakage morphology of conductive particles before and after bending, it can be found that bending in the ACF packaging area further exacerbates the previously compressed and broken conductive particles, with cracks continuing to grow and shatter.
{"title":"Experiments of Failure and Damage in ITO-Coated PC/FPC with ACF Bonding due to Bending Fatigue","authors":"Chao‐Ming Lin, C. Chu","doi":"10.4028/p-tjos1x","DOIUrl":"https://doi.org/10.4028/p-tjos1x","url":null,"abstract":"Anisotropic conductive film (ACF) is frequently used in the packaging manufacture for fine-pitch conductivity and interconnection, maintaining the electrical and mechanical connections between micro-electrodes. A key determinant of good conductivity is the deformation, fatigue, and breakage of conductive particles within the ACF packaging. This study aims to measure the resistance changes of specific conductive channels and observe the microscopic fatigue damage of compressed ACF conductive particles through the fabrication of Flex Printed Circuits (FPC) / Indium Tin Oxide-coated Polycarbonate (ITO-coated PC) specimens and the setup of bending experiments. The results show that the deformation, fatigue, and breakage of conductive particles will quantitatively affect electrical conductivity performance. By microscopically observing the breakage morphology of conductive particles before and after bending, it can be found that bending in the ACF packaging area further exacerbates the previously compressed and broken conductive particles, with cracks continuing to grow and shatter.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374129","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}
Aria Wira Yuda, Amir Arifin, I. Yani, Barlin Oemar
In the last twenty years, the manufacturing of titanium and its alloys for commercial use continued to expand. As this material has several very advantageous properties, leading to increasing applications in various industries, it is seldom used in mechanical engineering applications due to its tribological properties, which are unfavourable. The nitriding process is one of the most frequently used thermochemical processes designed to enhance the surface characteristics of titanium alloys and improve tribological properties. Various types of nitriding for titanium are studied, such as ion nitriding, plasma nitriding, laser nitriding and gas nitriding. This article provides a comprehensive examination of research papers on different advancements through a systematic literature review conducted in the period 2017-2023 about titanium nitriding for its process parameters, characteristics and functionalities of the product, particularly emphasising their contributions in surface characteristics and mechanical properties. The review seeks to offer an understanding of how the predominant processing factors, specifically temperature and time, affect the microstructure and the creation of novel phases. This review suggests a challenge for future researchers to investigate mechanisms of microstructure evolution and its impact on mechanical properties in conditioned environments to microhardness and ability to withstand rusting of titanium and its alloys.
{"title":"Titanium Nitriding: A Systematic Literature Review","authors":"Aria Wira Yuda, Amir Arifin, I. Yani, Barlin Oemar","doi":"10.4028/p-vz6a7i","DOIUrl":"https://doi.org/10.4028/p-vz6a7i","url":null,"abstract":"In the last twenty years, the manufacturing of titanium and its alloys for commercial use continued to expand. As this material has several very advantageous properties, leading to increasing applications in various industries, it is seldom used in mechanical engineering applications due to its tribological properties, which are unfavourable. The nitriding process is one of the most frequently used thermochemical processes designed to enhance the surface characteristics of titanium alloys and improve tribological properties. Various types of nitriding for titanium are studied, such as ion nitriding, plasma nitriding, laser nitriding and gas nitriding. This article provides a comprehensive examination of research papers on different advancements through a systematic literature review conducted in the period 2017-2023 about titanium nitriding for its process parameters, characteristics and functionalities of the product, particularly emphasising their contributions in surface characteristics and mechanical properties. The review seeks to offer an understanding of how the predominant processing factors, specifically temperature and time, affect the microstructure and the creation of novel phases. This review suggests a challenge for future researchers to investigate mechanisms of microstructure evolution and its impact on mechanical properties in conditioned environments to microhardness and ability to withstand rusting of titanium and its alloys.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374304","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}
Sara Kawaguchi, Kohei Hamada, Hiromi Kobori, Toshifumi Taniguchi, Tetsuo Shimizu
We have studied magneto-conductive and magnetic properties of La1-xSrxMnO3 (LSMO) thin films on a-SiO2 substrates produced by the metal organic decomposition (MOD) method. LSMO thin films for x = 0, 0.15 and 0.3 have been produced in a pure O2 gas atmosphere. Although LaMnO3 (LMO) single crystal is an antiferromagnetic insulator (AFI), LMO thin films we have produced show ferromagnetic metal (FM) properties for suitable heat treatment conditions. We consider that the excess of O2- ions in LMO thin films produced in a pure O2 gas atmosphere induces the strong hole self-doping into those and the LMO thin films change from AFI to FM. Whereas, the ordinary hole doping is also occurred in LSMO thin films at x > 0. Thus, the carrier doping for LSMO thin films at x > 0 is caused by the hole self-doping by O2- ions and the ordinary hole doping by the replacement of La3+ ions by Sr2+ ones. To investigate the crystallographic and surface structures of the LSMO thin films, X-ray diffraction and SEM measurements have been performed, respectively. From the X-ray diffraction measurement, we have found that all LSMO thin films have perovskite structure and are polycrystalline. From the SEM measurement, we have seen that the LSMO thin films are formed of the aggregation of LSMO fine particles. Electrical resistivities (ERs) and magneto-resistivity (MR) ratios of the LSMO thin films have been measured on the temperature dependence (4K-300K). From MR ratio measurements, the coercive forces of them have been obtained as a function of temperature, and the Curie temperatures have been estimated from the temperature dependences of the coercive forces. We have discussed the origin of the magneto-conductive and magnetic properties of LSMO thin films.
{"title":"Magneto-Conductive and Magnetic Properties in La1-xSrxMnO3 Thin Films on a-SiO2 Substrates Produced by Metal Organic Decomposition Method","authors":"Sara Kawaguchi, Kohei Hamada, Hiromi Kobori, Toshifumi Taniguchi, Tetsuo Shimizu","doi":"10.4028/p-gs6nki","DOIUrl":"https://doi.org/10.4028/p-gs6nki","url":null,"abstract":"We have studied magneto-conductive and magnetic properties of La1-xSrxMnO3 (LSMO) thin films on a-SiO2 substrates produced by the metal organic decomposition (MOD) method. LSMO thin films for x = 0, 0.15 and 0.3 have been produced in a pure O2 gas atmosphere. Although LaMnO3 (LMO) single crystal is an antiferromagnetic insulator (AFI), LMO thin films we have produced show ferromagnetic metal (FM) properties for suitable heat treatment conditions. We consider that the excess of O2- ions in LMO thin films produced in a pure O2 gas atmosphere induces the strong hole self-doping into those and the LMO thin films change from AFI to FM. Whereas, the ordinary hole doping is also occurred in LSMO thin films at x > 0. Thus, the carrier doping for LSMO thin films at x > 0 is caused by the hole self-doping by O2- ions and the ordinary hole doping by the replacement of La3+ ions by Sr2+ ones. To investigate the crystallographic and surface structures of the LSMO thin films, X-ray diffraction and SEM measurements have been performed, respectively. From the X-ray diffraction measurement, we have found that all LSMO thin films have perovskite structure and are polycrystalline. From the SEM measurement, we have seen that the LSMO thin films are formed of the aggregation of LSMO fine particles. Electrical resistivities (ERs) and magneto-resistivity (MR) ratios of the LSMO thin films have been measured on the temperature dependence (4K-300K). From MR ratio measurements, the coercive forces of them have been obtained as a function of temperature, and the Curie temperatures have been estimated from the temperature dependences of the coercive forces. We have discussed the origin of the magneto-conductive and magnetic properties of LSMO thin films.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374339","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}
T. Rautio, M. Jaskari, M. Hietala, Aappo Mustakangas, A. Järvenpää
Additive manufacturing (AM) has transformed the production of complex geometries and customized components.Powder Bed Fusion with Laser Beam (PBF-LB) is a popular AM technique known for its ability to produce parts with excellent mechanical properties. This study focuses on the characterization of AlSi10Mg, an aluminum alloy widely used in aerospace and automotive industries, manufactured through PBF-LB. The influence of printing orientation on the mechanical properties of the material is investigated. Previous research has shown that PBF-LB manufactured AlSi10Mg can exhibit superior mechanical properties compared to traditional material, but the anisotropic nature of parts produced by PBF-LB can significantly affect their properties. Tensile, impact, and fatigue testing are conducted to assess the mechanical behavior of the printed AlSi10Mg specimens under different loading conditions. Microstructural analysis is performed using Field-Emission Scanning Electron Microscopy (FESEM) equipped with Electron Backscatter Diffraction (EBSD) to examine the microstructural features introduced during the PBF-LB process. The results provide insights into the mechanical behavior of AlSi10Mg produced through PBF-LB and contribute to the design and utilization of components manufactured using this AM technique.
{"title":"Fatigue Performance and Impact Toughness of PBF-LB Manufactured AlSi 10Mg","authors":"T. Rautio, M. Jaskari, M. Hietala, Aappo Mustakangas, A. Järvenpää","doi":"10.4028/p-our7cc","DOIUrl":"https://doi.org/10.4028/p-our7cc","url":null,"abstract":"Additive manufacturing (AM) has transformed the production of complex geometries and customized components.Powder Bed Fusion with Laser Beam (PBF-LB) is a popular AM technique known for its ability to produce parts with excellent mechanical properties. This study focuses on the characterization of AlSi10Mg, an aluminum alloy widely used in aerospace and automotive industries, manufactured through PBF-LB. The influence of printing orientation on the mechanical properties of the material is investigated. Previous research has shown that PBF-LB manufactured AlSi10Mg can exhibit superior mechanical properties compared to traditional material, but the anisotropic nature of parts produced by PBF-LB can significantly affect their properties. Tensile, impact, and fatigue testing are conducted to assess the mechanical behavior of the printed AlSi10Mg specimens under different loading conditions. Microstructural analysis is performed using Field-Emission Scanning Electron Microscopy (FESEM) equipped with Electron Backscatter Diffraction (EBSD) to examine the microstructural features introduced during the PBF-LB process. The results provide insights into the mechanical behavior of AlSi10Mg produced through PBF-LB and contribute to the design and utilization of components manufactured using this AM technique.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374767","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}
Sherwin Leemark Abing, P. A. D. De Yro, S. A. C. Arañez
Polyether ether ketone (PEEK) was printed via FDM using gyroid, line, and tri-hexagon infill patterns. Its effect on the mechanical behavior (tensile, flexural and compression) and the investigation of void percentage and orientation angles within the internal structure were studied. The line pattern showed the highest tensile strength at 55.46 MPa due to its internal structure with a higher number of deposited layers oriented along the direction of the stress enabling higher stress absorption, the laminate theory. The angular lines on both tri-hexagon and gyroid patterns provided disadvantage as supported by Timoshenko's theory where the internal structures acted like a beam which is prone to easier deformation. Line pattern also demonstrated the highest flexural strength at 103.67 MPa. The continuity of the pattern along the internal structure perpendicular to the direction of the force provided more effective transfer of stress. However, the highest compressive load was observed in gyroid pattern with 8,266.89 N. The redundancies in the internal structure design of gyroid pattern enabled more compression load absorption. Symmetry and internal angles in gyroid and tri-hexagon patterns allowed more compressive force which are more susceptible to fractures due to higher strains created. Lastly, void percentage showed line pattern with the lowest at 1.53%. In addition, the mean void orientation angle showed that the closer it is to 0o, the weaker the part.
{"title":"Mechanical Behavior and Void Analysis of 3D Printed PEEK by Fused Deposition Modeling (FDM) with Varying Infill Patterns","authors":"Sherwin Leemark Abing, P. A. D. De Yro, S. A. C. Arañez","doi":"10.4028/p-ewp2su","DOIUrl":"https://doi.org/10.4028/p-ewp2su","url":null,"abstract":"Polyether ether ketone (PEEK) was printed via FDM using gyroid, line, and tri-hexagon infill patterns. Its effect on the mechanical behavior (tensile, flexural and compression) and the investigation of void percentage and orientation angles within the internal structure were studied. The line pattern showed the highest tensile strength at 55.46 MPa due to its internal structure with a higher number of deposited layers oriented along the direction of the stress enabling higher stress absorption, the laminate theory. The angular lines on both tri-hexagon and gyroid patterns provided disadvantage as supported by Timoshenko's theory where the internal structures acted like a beam which is prone to easier deformation. Line pattern also demonstrated the highest flexural strength at 103.67 MPa. The continuity of the pattern along the internal structure perpendicular to the direction of the force provided more effective transfer of stress. However, the highest compressive load was observed in gyroid pattern with 8,266.89 N. The redundancies in the internal structure design of gyroid pattern enabled more compression load absorption. Symmetry and internal angles in gyroid and tri-hexagon patterns allowed more compressive force which are more susceptible to fractures due to higher strains created. Lastly, void percentage showed line pattern with the lowest at 1.53%. In addition, the mean void orientation angle showed that the closer it is to 0o, the weaker the part.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140374835","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}
T. Haga, Shunpei Mori, Hiizu Ochi, H. Fuse, H. Watari, Shinichi Nishida
This study explored the capability of sheet forming of JIS ADC12 aluminum alloy, commonly used for die casting. Despite the poor ductility of ADC12, we attempted to improve this property by applying rapid solidification through an unequal diameter twin roll caster. A strip with a thickness of 3.7 mm was cast at a speed of 20 m/min. The as-cast strip was then cold rolled and annealed to investigate its sheet-formability by deep drawing, three-roll bending and V-bending. This research also investigated the elements of ADC12 that contribute to poor ductility, with a focus on the impact of Mg, Cu, Fe, and Zn during the deep drawing process.
本研究探讨了常用于压铸的 JIS ADC12 铝合金的板材成型能力。尽管 ADC12 的延展性较差，但我们尝试通过不等直径双辊铸造机进行快速凝固来改善这一特性。我们以 20 米/分钟的速度浇铸了厚度为 3.7 毫米的带材。然后对浇铸后的带材进行冷轧和退火，通过深拉、三辊弯曲和 V 形弯曲来研究其板材成型性。这项研究还调查了 ADC12 中导致延展性差的元素，重点是深拉过程中 Mg、Cu、Fe 和 Zn 的影响。
{"title":"Sheet Forming of Roll Cast Aluminum Alloy for Die Casting","authors":"T. Haga, Shunpei Mori, Hiizu Ochi, H. Fuse, H. Watari, Shinichi Nishida","doi":"10.4028/p-n7poab","DOIUrl":"https://doi.org/10.4028/p-n7poab","url":null,"abstract":"This study explored the capability of sheet forming of JIS ADC12 aluminum alloy, commonly used for die casting. Despite the poor ductility of ADC12, we attempted to improve this property by applying rapid solidification through an unequal diameter twin roll caster. A strip with a thickness of 3.7 mm was cast at a speed of 20 m/min. The as-cast strip was then cold rolled and annealed to investigate its sheet-formability by deep drawing, three-roll bending and V-bending. This research also investigated the elements of ADC12 that contribute to poor ductility, with a focus on the impact of Mg, Cu, Fe, and Zn during the deep drawing process.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140375408","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}
Khiang Chung Kong, C. L. M. Eh, A. N. T. Tiong, J. Kansedo, W. P. Q. Ng, C. H. Lim, B. S. How
The abundance of rice husk in some regions of Southeast Asia makes it a potential feedstock for hydrogen synthesis. However, the information on economic and environmental feasibility of its conversion to hydrogen is lacking. This study aims to assess the techno-economic and life cycle sustainability of hydrogen production from rice husk via the thermochemical gasification method. The techno-economic analyses reveal that rice husk-based hydrogen conversion is more financially attractive than conventional hydrogen production technology. The results of the life cycle assessment are also promising, especially with the global warming potential of the rice husk-based hydrogen production being 99.7 % lower than that of natural gas steam reforming. Waste valorization of rice husk into hydrogen is therefore economically and environmentally viable.
{"title":"Hydrogen Production from Rice Husk: Techno-Economic and Life Cycle Analysis","authors":"Khiang Chung Kong, C. L. M. Eh, A. N. T. Tiong, J. Kansedo, W. P. Q. Ng, C. H. Lim, B. S. How","doi":"10.4028/p-8bu2vn","DOIUrl":"https://doi.org/10.4028/p-8bu2vn","url":null,"abstract":"The abundance of rice husk in some regions of Southeast Asia makes it a potential feedstock for hydrogen synthesis. However, the information on economic and environmental feasibility of its conversion to hydrogen is lacking. This study aims to assess the techno-economic and life cycle sustainability of hydrogen production from rice husk via the thermochemical gasification method. The techno-economic analyses reveal that rice husk-based hydrogen conversion is more financially attractive than conventional hydrogen production technology. The results of the life cycle assessment are also promising, especially with the global warming potential of the rice husk-based hydrogen production being 99.7 % lower than that of natural gas steam reforming. Waste valorization of rice husk into hydrogen is therefore economically and environmentally viable.","PeriodicalId":507685,"journal":{"name":"Key Engineering Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376526","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}
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