Pub Date : 2021-12-31DOI: 10.14447/jnmes.v24i4.a07
H. Rusdi, N. S. Mohamed, R. Subban, R. Rusdi
Received: March 31-2021 Accepted: September 30-2021 Mechanical milling method is performed to prepare Li1+xAlxTixSn2-2xP3O12 (x = 0.2, 0.4, 0.6, 0.8) NASICON-based ceramic solid electrolyte at 650 oC. X-ray diffraction (XRD) showed that Li1.4Al0.4Ti0.4Sn1.2P3O12 has almost pure compound that is isostructural to LiSn2(PO4)3 and the addition of Al3+ and Ti4+ have reduced the cell volume of the electrolytes. Side occupancy factor studies verified that the electrolyte with x = 0.4 possessed Sn:Ti:Al ratio close to the theoritical ratio. Field emission scanning electron microscopy analysis portrayed that all electrolytes have flaky type morphology. From electrochemical impedance spectroscopy (EIS) analysis, the highest value achieved is 4.74 × 10-6 S cm-1 at x = 0.4. The substitutions of di-metal have affected the bulk resistance of the electrolytes. Dielectric constant of the electrolyte is at maximum when x = 0.4. The electrolytes follow non-Debye behavior as it shows a variation of relaxation times.
{"title":"Di-metal Element Substitution of Al3+ and Ti4+ in Improving Electrochemical and Structural Behavior of Ceramic Solid Electrolytes","authors":"H. Rusdi, N. S. Mohamed, R. Subban, R. Rusdi","doi":"10.14447/jnmes.v24i4.a07","DOIUrl":"https://doi.org/10.14447/jnmes.v24i4.a07","url":null,"abstract":"Received: March 31-2021 Accepted: September 30-2021 Mechanical milling method is performed to prepare Li1+xAlxTixSn2-2xP3O12 (x = 0.2, 0.4, 0.6, 0.8) NASICON-based ceramic solid electrolyte at 650 oC. X-ray diffraction (XRD) showed that Li1.4Al0.4Ti0.4Sn1.2P3O12 has almost pure compound that is isostructural to LiSn2(PO4)3 and the addition of Al3+ and Ti4+ have reduced the cell volume of the electrolytes. Side occupancy factor studies verified that the electrolyte with x = 0.4 possessed Sn:Ti:Al ratio close to the theoritical ratio. Field emission scanning electron microscopy analysis portrayed that all electrolytes have flaky type morphology. From electrochemical impedance spectroscopy (EIS) analysis, the highest value achieved is 4.74 × 10-6 S cm-1 at x = 0.4. The substitutions of di-metal have affected the bulk resistance of the electrolytes. Dielectric constant of the electrolyte is at maximum when x = 0.4. The electrolytes follow non-Debye behavior as it shows a variation of relaxation times.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66620323","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 : 2021-12-31DOI: 10.14447/jnmes.v24i4.a03
M. Santhosh, R. Sasikumar, S. Khadar, L. Natrayan
Received: June 2-2021 Accepted: September 30-2021 The development of high strength, fire proof fiber-reinforced polymer matrix composites is significant for automobile industries over the past few decades. This research investigates Ammonium Polyphosphate (APP) influence on thermal and fire performance of the E-Glass/Phenolic hybrid composites fabricated via book press compression molding. Various composition of hybrid laminates with 2, 4, 6, 8, 10 weight percentages of APP fabricated along with neat laminates and its thermal, fire performances like limiting oxygen index (LOI), UL 94, Influence of accelerated heat aging on impact behavior of hybrid samples were studied and reported along with the morphology studies. Results showed that higher APP filled specimens possess better fire performance than neat samples. UL 94 vertical and horizontal burning tests reports that 8 and 10 wt. % APP filled specimens showed a lower flame spreading rate and meets V-0 criteria. Similarly, heat aging significantly limits the hybrid configurations energy absorption capacity depending on increasing temperature and time duration. The investigations concluded that the proposed E-Glass/Phenolic/Ammonium Polyphosphate hybrid composites were apt for developing sustainable E-Vehicle battery casings and fireproof automobile components.
{"title":"Ammonium Polyphosphate Reinforced E-Glass/Phenolic Hybrid Composites for Primary E-Vehicle Battery Casings –A Study on Fire Performance","authors":"M. Santhosh, R. Sasikumar, S. Khadar, L. Natrayan","doi":"10.14447/jnmes.v24i4.a03","DOIUrl":"https://doi.org/10.14447/jnmes.v24i4.a03","url":null,"abstract":"Received: June 2-2021 Accepted: September 30-2021 The development of high strength, fire proof fiber-reinforced polymer matrix composites is significant for automobile industries over the past few decades. This research investigates Ammonium Polyphosphate (APP) influence on thermal and fire performance of the E-Glass/Phenolic hybrid composites fabricated via book press compression molding. Various composition of hybrid laminates with 2, 4, 6, 8, 10 weight percentages of APP fabricated along with neat laminates and its thermal, fire performances like limiting oxygen index (LOI), UL 94, Influence of accelerated heat aging on impact behavior of hybrid samples were studied and reported along with the morphology studies. Results showed that higher APP filled specimens possess better fire performance than neat samples. UL 94 vertical and horizontal burning tests reports that 8 and 10 wt. % APP filled specimens showed a lower flame spreading rate and meets V-0 criteria. Similarly, heat aging significantly limits the hybrid configurations energy absorption capacity depending on increasing temperature and time duration. The investigations concluded that the proposed E-Glass/Phenolic/Ammonium Polyphosphate hybrid composites were apt for developing sustainable E-Vehicle battery casings and fireproof automobile components.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44948894","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 : 2021-12-31DOI: 10.14447/jnmes.v24i4.a08
G. Sugila Devi, K. Sudalaimani
{"title":"Investigation on Strength, Shrinkage and Hydrogen Ion Concentration of Magnesium Binder Blended Cement Concrete","authors":"G. Sugila Devi, K. Sudalaimani","doi":"10.14447/jnmes.v24i4.a08","DOIUrl":"https://doi.org/10.14447/jnmes.v24i4.a08","url":null,"abstract":"","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45627945","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 : 2021-09-30DOI: 10.14447/jnmes.v24i3.a10
S. Raja, N. P. Ananthamoorthy
This article explains the design of fuzzy logic controllers (FLCs) for level processes which is generally used in numerous control operations. The main purpose of the proposed design is to maintain the liquid level in the tank at the desired level. In this paper, the fuzzy logic controller is chosen as the controller for the level process because of its fault tolerance, knowledge representation, expertise, non-linearity, uncertainty, and real-time manipulation. Fuzzy logic controllers have been developed and compared in the Mamdani version. Performance on proportional derivatives (PD) and proportional-integral-derivatives (PID) controllers. Whereas traditional PD and PID controllers are simple, dependable and eliminate steady-state errors, fuzzy logic controllers are rule-based systems that are a logical model of human behavior in processes of the proposed design. The response is provided as follows: The LabVIEW software has been validated. It is used to simulate the proposed system. Comparing error indicators such as PD controller, PID controller, fuzzy logic controller integral absolute error, integral quadratic error, time and absolute error integral, time and quadratic error integral, fuzzy logic controller is observed from the simulation results. increase. It offers better performance than other controllers.
{"title":"Evaluation of Newly Developed Liquid Level Process with PD and PID Controller without Altering Material Characteristics","authors":"S. Raja, N. P. Ananthamoorthy","doi":"10.14447/jnmes.v24i3.a10","DOIUrl":"https://doi.org/10.14447/jnmes.v24i3.a10","url":null,"abstract":"This article explains the design of fuzzy logic controllers (FLCs) for level processes which is generally used in numerous control operations. The main purpose of the proposed design is to maintain the liquid level in the tank at the desired level. In this paper, the fuzzy logic controller is chosen as the controller for the level process because of its fault tolerance, knowledge representation, expertise, non-linearity, uncertainty, and real-time manipulation. Fuzzy logic controllers have been developed and compared in the Mamdani version. Performance on proportional derivatives (PD) and proportional-integral-derivatives (PID) controllers. Whereas traditional PD and PID controllers are simple, dependable and eliminate steady-state errors, fuzzy logic controllers are rule-based systems that are a logical model of human behavior in processes of the proposed design. The response is provided as follows: The LabVIEW software has been validated. It is used to simulate the proposed system. Comparing error indicators such as PD controller, PID controller, fuzzy logic controller integral absolute error, integral quadratic error, time and absolute error integral, time and quadratic error integral, fuzzy logic controller is observed from the simulation results. increase. It offers better performance than other controllers.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42674517","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 : 2021-09-30DOI: 10.14447/jnmes.v24i3.a07
A. Al-Owais, I. El-Hallag, E. El-Mossalamy
Convolutive, deconvolutive cyclic voltammetric, digital simulation, chrono- amperometric, scanning electron microscopy (SEM) and transmission electron micro- scopy (TEM) were used for clarifying the characterization of charge transfer complex (CT) of 4,4’-bipyridine with benzoquinone derivatives. These studies were achieved at a gold electrode in TBAPL/CH2Cl2. The kind of the electrode reaction and the kinetic parameters of the CT complex under study were calculated and explained via the above methods, then confirmed via digital simulation. SEM and TEM were performed for characterization of the structural morphology of the presented complex as well as showing the nanostructured of the complex.
{"title":"Convolutive Deconvolutive Voltammetry of Charge Transfer Complexes of 4,4’-Bipyridine With Benzoquinone Derivatives","authors":"A. Al-Owais, I. El-Hallag, E. El-Mossalamy","doi":"10.14447/jnmes.v24i3.a07","DOIUrl":"https://doi.org/10.14447/jnmes.v24i3.a07","url":null,"abstract":"Convolutive, deconvolutive cyclic voltammetric, digital simulation, chrono- amperometric, scanning electron microscopy (SEM) and transmission electron micro- scopy (TEM) were used for clarifying the characterization of charge transfer complex (CT) of 4,4’-bipyridine with benzoquinone derivatives. These studies were achieved at a gold electrode in TBAPL/CH2Cl2. The kind of the electrode reaction and the kinetic parameters of the CT complex under study were calculated and explained via the above methods, then confirmed via digital simulation. SEM and TEM were performed for characterization of the structural morphology of the presented complex as well as showing the nanostructured of the complex.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43506603","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 : 2021-09-30DOI: 10.14447/jnmes.v24i3.a02
Ayat Leila, Meftah Afek, Idda Ahmed, Zebri Halima
As the name implies, hydrogenated amorphous silicon (a-Si: H) is composed of silicon atoms which are in a disordered configuration away from all Bravais lattices. The hydrogenated amorphous silicon was manufactured in 1969 where there was a renewed interest in non-hydrogenated amorphous silicon. The use of hydrogenated amorphous silicon as the active material in solar cells inefficient but cheap, is currently much studied. We have presented in this work, the results of the numerical simulation of a-Si: H solar cell by the wxAMPS (Analysis of Microelectronic and Photonic Structures) software and the results were compared with those found experimentally, we find a good agreement. For the efficiency there was a difference of 0.17%. We also study the influence of the thickness of a-Si: H intrinsic layer on the photovoltaic parameters of the solar cell. This allows considering the use of amorphous thinner layers for photovoltaic applications. The efficiency has a maximum value of 7.117 %, corresponding to a intrinsic layer thickness of 560 nm. The using a-Si:H alloys provide a good solution to enhance a-Si:H solar cell performance. The use of a-SiC:H as a p-type window layer in amorphous silicon solar cells is one of its primary photovoltaic applications. The wide band gap of p-a-SiC:H alloy used as window layer for minimizing the optical loss. To improve the efficiency of a-Si:H solar cell, we have study by simulation the performance of the (p) a-SiC:H/(i) a-Si:H/ (n) a-Si:H heterojunction solar cell. The effects of a-SiC:H window layer on the photovoltaic performance have been investigated, where the best initial conversion efficiency of 10.59%.
顾名思义，氢化非晶硅(a- si: H)是由远离所有Bravais晶格的无序构型的硅原子组成的。氢化非晶硅是在1969年制造出来的，当时人们对非氢化非晶硅重新产生了兴趣。利用氢化非晶硅作为太阳能电池的活性材料，效率低但价格便宜，目前研究较多。本文用wxAMPS (Analysis of Microelectronic and Photonic Structures)软件对a- si: H太阳能电池进行了数值模拟，并与实验结果进行了比较，发现两者吻合较好。效率差异为0.17%。我们还研究了a-Si: H本征层厚度对太阳能电池光伏参数的影响。这允许考虑在光伏应用中使用非晶薄层。效率最大值为7.117%，对应的本征层厚度为560nm。采用a- si:H合金为提高a- si:H太阳能电池的性能提供了良好的解决方案。在非晶硅太阳能电池中使用a- sic:H作为p型窗口层是其主要的光伏应用之一。利用p-a-SiC:H合金的宽带隙作为窗口层，最大限度地减少了光学损耗。为了提高a-Si:H太阳能电池的效率，我们通过模拟研究了(p) a-SiC:H/(i) a-Si:H/ (n) a-Si:H异质结太阳能电池的性能。研究了a-SiC:H窗口层对光伏性能的影响，其中最佳初始转换效率为10.59%。
{"title":"Analysis and Optimization of the Performance of Hydrogenated Amorphous Silicon Solar Cell","authors":"Ayat Leila, Meftah Afek, Idda Ahmed, Zebri Halima","doi":"10.14447/jnmes.v24i3.a02","DOIUrl":"https://doi.org/10.14447/jnmes.v24i3.a02","url":null,"abstract":"As the name implies, hydrogenated amorphous silicon (a-Si: H) is composed of silicon atoms which are in a disordered configuration away from all Bravais lattices. The hydrogenated amorphous silicon was manufactured in 1969 where there was a renewed interest in non-hydrogenated amorphous silicon. The use of hydrogenated amorphous silicon as the active material in solar cells inefficient but cheap, is currently much studied. We have presented in this work, the results of the numerical simulation of a-Si: H solar cell by the wxAMPS (Analysis of Microelectronic and Photonic Structures) software and the results were compared with those found experimentally, we find a good agreement. For the efficiency there was a difference of 0.17%. We also study the influence of the thickness of a-Si: H intrinsic layer on the photovoltaic parameters of the solar cell. This allows considering the use of amorphous thinner layers for photovoltaic applications. The efficiency has a maximum value of 7.117 %, corresponding to a intrinsic layer thickness of 560 nm. The using a-Si:H alloys provide a good solution to enhance a-Si:H solar cell performance. The use of a-SiC:H as a p-type window layer in amorphous silicon solar cells is one of its primary photovoltaic applications. The wide band gap of p-a-SiC:H alloy used as window layer for minimizing the optical loss. To improve the efficiency of a-Si:H solar cell, we have study by simulation the performance of the (p) a-SiC:H/(i) a-Si:H/ (n) a-Si:H heterojunction solar cell. The effects of a-SiC:H window layer on the photovoltaic performance have been investigated, where the best initial conversion efficiency of 10.59%.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46754188","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 : 2021-09-30DOI: 10.14447/jnmes.v24i3.a04
R. W. Kotla, S. Yarlagadda
Penetration of renewable energy systems (RES) into microgrid (MG) increases rapidly due to the intensified energy demands by the distribution level consumers. To meet this demand, consumers are erecting small scale distribution renewable energy generating systems (DREGS) which mostly constitutes of solar photovoltaic systems. Injecting power from the DREGS to the MG will rise potential problems like real and reactive power distortions, sag/swells which affect the power quality of the system. Voltage sags and swells are normally caused by MG intermittencies which occur at the high power and low energy situations. In order to maintain the power quality of the MG during intermittencies, an ultracapacitor (UC) is integrated along with a unified power quality conditioner (UPQC) with the DREGS is proposed in this paper. Basically, an ultracapacitor is a high power and low energy density device that will compensate the MG intermittencies. This proposed system deals with the control and design aspects of the ultracapacitor, a bidirectional converter for charging and discharging of UC, and a UPQC. The UPQC will act as a dynamic voltage restorer (DVR) for the MG side and an active power filter (APF) for the load side. The proposed system is designed and modelled using Matlab/Simulink platform and the results were analyzed.
{"title":"Real-time Simulations on Ultracapacitor based UPQC for the Power Quality Improvement in the Microgrid","authors":"R. W. Kotla, S. Yarlagadda","doi":"10.14447/jnmes.v24i3.a04","DOIUrl":"https://doi.org/10.14447/jnmes.v24i3.a04","url":null,"abstract":"Penetration of renewable energy systems (RES) into microgrid (MG) increases rapidly due to the intensified energy demands by the distribution level consumers. To meet this demand, consumers are erecting small scale distribution renewable energy generating systems (DREGS) which mostly constitutes of solar photovoltaic systems. Injecting power from the DREGS to the MG will rise potential problems like real and reactive power distortions, sag/swells which affect the power quality of the system. Voltage sags and swells are normally caused by MG intermittencies which occur at the high power and low energy situations. In order to maintain the power quality of the MG during intermittencies, an ultracapacitor (UC) is integrated along with a unified power quality conditioner (UPQC) with the DREGS is proposed in this paper. Basically, an ultracapacitor is a high power and low energy density device that will compensate the MG intermittencies. This proposed system deals with the control and design aspects of the ultracapacitor, a bidirectional converter for charging and discharging of UC, and a UPQC. The UPQC will act as a dynamic voltage restorer (DVR) for the MG side and an active power filter (APF) for the load side. The proposed system is designed and modelled using Matlab/Simulink platform and the results were analyzed.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44680783","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 : 2021-09-30DOI: 10.14447/jnmes.v24i3.a09
M. Dasari, Venkatesan Mani, S. Mopidevi
For grid-connected applications, Multi-level Inverters (MLI) are mostly used, similarly to join the various RES to the grid as well as to satisfy the load demand MLIs are mostly preferred. This article presents a fuel cell-based high-gain boost converter with a single-phase five-level inverter controlled by CB-PWM techniques. A fuel cell produces a very less amount of power so to boost-up the fuel cell power to the essential power level with the help of a high-gain boost converter. The boost converter produces the required DC output power and that power is a converter to required AC power by using a single-phase five-level inverter. The MLI switches are controlled with the help of MC-PWM techniques and observe the inverter behavior in terms of THD, output ripples, and settling time. The entire work is done in MATLAB/Simulink tool as well as design a small prototype model by using the FPGA board.
{"title":"Fuel Cell-Based High-Gain Boost Converter Fed Single-Phase Multi-level Inverter Controlled by FPGA controller","authors":"M. Dasari, Venkatesan Mani, S. Mopidevi","doi":"10.14447/jnmes.v24i3.a09","DOIUrl":"https://doi.org/10.14447/jnmes.v24i3.a09","url":null,"abstract":"For grid-connected applications, Multi-level Inverters (MLI) are mostly used, similarly to join the various RES to the grid as well as to satisfy the load demand MLIs are mostly preferred. This article presents a fuel cell-based high-gain boost converter with a single-phase five-level inverter controlled by CB-PWM techniques. A fuel cell produces a very less amount of power so to boost-up the fuel cell power to the essential power level with the help of a high-gain boost converter. The boost converter produces the required DC output power and that power is a converter to required AC power by using a single-phase five-level inverter. The MLI switches are controlled with the help of MC-PWM techniques and observe the inverter behavior in terms of THD, output ripples, and settling time. The entire work is done in MATLAB/Simulink tool as well as design a small prototype model by using the FPGA board.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47643459","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 : 2021-09-30DOI: 10.14447/jnmes.v24i3.a01
A. D, S. K.
The present work reports about the effect of cast scandium doped ER5356 filler rod in Tungsten Inert Gas welding of dissimilar Aluminium Magnesium alloys. The grain refinement effect on weld microstructure by transition metal scandium was investigated with optical and scanning electron microscope. Additionally, XRD analysis, tensile strength (global and component joint) and microhardness were tested on weld samples. The microstructural examination in weld fusion zone observed fine grain size and suppressed dendrite arm spacing. The formation of Al3Sc precipitate in weld fusion zone due to scandium inclusion in filler was identified and resulted in improving the weld strength significantly. The higher joint efficiency of 92.5% was achieved in the global joint of weld samples. The failure location of global joint tensile samples identified the weld fusion zone is stronger than AA5052 base material. Further weld strength was evaluated with component joint by micro tensile test, which results in 70MPa enhancement in UTS values and validating the accurate weld strength. However, the elongation of the tensile test sample reduced marginally for the weld. The fracture mechanism of the weld joint observes decrease in ductility. The significant increase in hardness of the weld fusion zone was evident due to doping of scandium compared to the other zones of the weld.
{"title":"Microstructure and Mechanical Behavior of Sc Doped Filler Rod in TIG Welding Dissimilar Al Mg Alloys","authors":"A. D, S. K.","doi":"10.14447/jnmes.v24i3.a01","DOIUrl":"https://doi.org/10.14447/jnmes.v24i3.a01","url":null,"abstract":"The present work reports about the effect of cast scandium doped ER5356 filler rod in Tungsten Inert Gas welding of dissimilar Aluminium Magnesium alloys. The grain refinement effect on weld microstructure by transition metal scandium was investigated with optical and scanning electron microscope. Additionally, XRD analysis, tensile strength (global and component joint) and microhardness were tested on weld samples. The microstructural examination in weld fusion zone observed fine grain size and suppressed dendrite arm spacing. The formation of Al3Sc precipitate in weld fusion zone due to scandium inclusion in filler was identified and resulted in improving the weld strength significantly. The higher joint efficiency of 92.5% was achieved in the global joint of weld samples. The failure location of global joint tensile samples identified the weld fusion zone is stronger than AA5052 base material. Further weld strength was evaluated with component joint by micro tensile test, which results in 70MPa enhancement in UTS values and validating the accurate weld strength. However, the elongation of the tensile test sample reduced marginally for the weld. The fracture mechanism of the weld joint observes decrease in ductility. The significant increase in hardness of the weld fusion zone was evident due to doping of scandium compared to the other zones of the weld.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48445018","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 : 2021-09-30DOI: 10.14447/jnmes.v24i3.a05
M. Sulaiman, M. Kadir, A. N. Che Mat
Composite solid electrolytes in the system (1-x)MgCO3 – xAl2O3 with x = 0.1 - 0.9 were synthesized by a sol-gel method and analyzed by X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, scanning electron microscopy, energy dispersive X-ray, Fourier transform infrared spectroscopy and alternating current impedance spectroscopy for the determination of the phases and crystallinity, thermal stability, surface morphology, elemental composition, chemical bonding and conductivity, respectively. The composites show that, the crystallinity of the composites decreases as the amount of Al2O3 increase which could lead to higher conductivity. The thermal decomposition studies also indicate that the melting and/or decomposition of the composites occur at lower temperature than the pure MgCO3 which normally take place at 350 oC. The composite with the ratio of x = 0.9 give the highest conductivity value in order of 10-4 S.cm-1 as compared to other ratio due to effective transfer of charge carriers in addition to the formation of MgO-Mg2+ species at the interface.
{"title":"Sol-gel Synthesis and Characterization of MgCO3 – Al2O3 Composite Solid Electrolytes","authors":"M. Sulaiman, M. Kadir, A. N. Che Mat","doi":"10.14447/jnmes.v24i3.a05","DOIUrl":"https://doi.org/10.14447/jnmes.v24i3.a05","url":null,"abstract":"Composite solid electrolytes in the system (1-x)MgCO3 – xAl2O3 with x = 0.1 - 0.9 were synthesized by a sol-gel method and analyzed by X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, scanning electron microscopy, energy dispersive X-ray, Fourier transform infrared spectroscopy and alternating current impedance spectroscopy for the determination of the phases and crystallinity, thermal stability, surface morphology, elemental composition, chemical bonding and conductivity, respectively. The composites show that, the crystallinity of the composites decreases as the amount of Al2O3 increase which could lead to higher conductivity. The thermal decomposition studies also indicate that the melting and/or decomposition of the composites occur at lower temperature than the pure MgCO3 which normally take place at 350 oC. The composite with the ratio of x = 0.9 give the highest conductivity value in order of 10-4 S.cm-1 as compared to other ratio due to effective transfer of charge carriers in addition to the formation of MgO-Mg2+ species at the interface.","PeriodicalId":16447,"journal":{"name":"Journal of New Materials For Electrochemical Systems","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42569139","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}
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