Materials Science Forum最新文献_第4页

Influence of Electrolyte Concentration on the Electrochemical Behavior of Copper Hexacyanoferrate as an Active Material for Zinc-Ion Batteries 电解液浓度对锌-离子电池活性材料六氰基铁酸铜电化学行为的影响

Materials Science Forum Pub Date : 2024-03-29 DOI: 10.4028/p-2jsyvs

Sangyup Lee, Paul Maldonado Nogales, S. Jeong

{"title":"Influence of Electrolyte Concentration on the Electrochemical Behavior of Copper Hexacyanoferrate as an Active Material for Zinc-Ion Batteries","authors":"Sangyup Lee, Paul Maldonado Nogales, S. Jeong","doi":"10.4028/p-2jsyvs","DOIUrl":"https://doi.org/10.4028/p-2jsyvs","url":null,"abstract":"This study investigates the impact of electrolyte concentration on the electrochemical behavior of copper hexacyanoferrate (CuHCF), a promising active material for aqueous zinc-ion battery electrodes. Cyclic voltammetry, charge-discharge measurements, and X-ray diffraction analysis were employed to assess the electrochemical reactions and structural integrity of the CuHCF electrode under varying electrolyte concentrations. The results revealed a significant influence of electrolyte concentration on the electrochemical performance of the CuHCF electrode. Specifically, the charge-discharge capacity exhibited an initial increase as the electrolyte concentration increased from 1.0 to 2.0 mol dm‒3, followed by a subsequent decrease. This decrease in capacity was attributed to the occurrence of an electrode/electrolyte interfacial reaction in the low-potential region of 0.0–0.3 V, coupled with structural changes in the CuHCF active material. Notably, these findings underscore the strong correlation between the electrochemical performance of the CuHCF electrode and the hydration structure of zinc ions, as well as the pH of the electrolyte solution. Thus, optimizing the electrolyte composition holds significant potential for enhancing the performance of aqueous zinc-ion batteries employing CuHCF electrodes.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"18 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366052","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

Investigations on Varying Compositions of Nylon 6 Polymer Matrix Composites for Wear Reduction in Application to Gears 尼龙 6 聚合物基复合材料不同成分在齿轮减磨应用中的研究

Materials Science Forum Pub Date : 2024-03-29 DOI: 10.4028/p-dfl7zn

V. Karthi, N. M. Raj, J. Baskaran

{"title":"Investigations on Varying Compositions of Nylon 6 Polymer Matrix Composites for Wear Reduction in Application to Gears","authors":"V. Karthi, N. M. Raj, J. Baskaran","doi":"10.4028/p-dfl7zn","DOIUrl":"https://doi.org/10.4028/p-dfl7zn","url":null,"abstract":"In power transmission systems, gears are the most essential parts. Gear failure would happen at any regular working cycles and it must be avoided with special care. The mode of failure suggests that optimum material and suitable post processing has to be done. Industry demands more efficient, reliable, and lightweight gears. Hence more efficient, reliable, and lightweight gears must be developed and manufactured. Eventhough lot of investment is being done on research and implementing new technologies while manufacturing gears, stills some failures is arised. Many physical factors, including the inappropriate materials composition, may induce gear failure. In this paper, some typical diverse materials, like nylon 6 and glass fibers are mixed with various volume proportions to enhance wear resistance and improve gear’s life. Polymer gears developed in this study offer more superior life than pure nylon gears. All the prepared specimen samples are tested to a variety of studies including Tensile, Compression, Flexural, Impact, TGA and Wear tests. Depreciation is not reducing low, however. 90% nylon 6 + 10 % Glass fiber to 10% nylon 6+ 90Glass fiber 10 % Nylon 6 has mixed for investigation. Based on the investigation, 70% of Nylon 6 + 30% glass fiber has high strength, low wear, and high wear resistance.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"60 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366068","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

Mechanical Properties Response of Heat Treated Recycled Aluminium Alloy Reinforced with Gold Nanoparticle (AuNps) Extracted from Aloe Vera Leaf 用芦荟叶提取的金纳米粒子（AuNps）强化的热处理再生铝合金的力学性能响应

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-9lnykp

T. Azeez, S. Akande, O. Ikumapayi, J. Kayode, S. Afolalu

{"title":"Mechanical Properties Response of Heat Treated Recycled Aluminium Alloy Reinforced with Gold Nanoparticle (AuNps) Extracted from Aloe Vera Leaf","authors":"T. Azeez, S. Akande, O. Ikumapayi, J. Kayode, S. Afolalu","doi":"10.4028/p-9lnykp","DOIUrl":"https://doi.org/10.4028/p-9lnykp","url":null,"abstract":"Aluminium and its alloys are becoming more widely used in engineering due to a growing need for lightweight metals. However, owing to boundary segregation and coarse dendritic grains, typical cast aluminium alloys have low hardness and strength, limiting their use in large-scale and complex-shaped applications. Many studies have shown that reinforcing aluminium alloy with nanoparticles synthesized by various chemical and physical ways improves these shortcomings, but these approaches are both expensive and potentially dangerous. Recycling aluminium scrap is also necessary to save energy and money. Therefore, this research aimed at production of high tensile strength and hardness from scrapped aluminium reinforced with synthetic nano particle and subjected to heat treatment. The elemental composition of aluminium alloy cast from scrap was analyzed using a Light Emission Polyvac Spectrometer, and gold nanoparticles were synthesized from aloe vera leaves. In creating a Metal Matrix Nano Composite, Al alloy was reinforced with gold nanoparticles at various percentages. At 450 °C, the reinforced Metal Matrix Nano Composite was hardened. The composites' hardness, tensile strength, and microstructural analyses were determined. The composites' grain structure demonstrated a uniform distribution of reinforcing phase of Al 6063 Alloy. The microhardness and tensile strength of the composites are influenced by the % weight proportion of AuNps and the heat treatment. After 3 percent and 6 percent weight of AuNps reinforcement were used, the microhardness/tensile strength of the reinforced sample rose by 22.4 Hv/58MPa and 24.7 Hv/80MPa, respectively, but when the composites were hardened, it climbed to 41 Hv/109 MPa and 45.5 Hv/125 MPa. After 3 percent and 6 percent weight of AuNps reinforcement were used, the microhardness/tensile strength of the reinforced sample rose by 22.4 Hv/58MPa and 24.7 Hv/80MPa, respectively, but when the composites were hardened, it climbed to 41 Hv/109 MPa and 45.5 Hv/125 MPa.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140408491","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 Micro and Nano Particles of Al2O3 and SiO2 on Electrical Tree Inhibition in Epoxy Resin Insulator Al2O3 和 SiO2 的微纳米颗粒对环氧树脂绝缘体电树抑制作用的影响

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-2fxrkw

Mituna Foitong, A. Suksri

{"title":"Effect of Micro and Nano Particles of Al2O3 and SiO2 on Electrical Tree Inhibition in Epoxy Resin Insulator","authors":"Mituna Foitong, A. Suksri","doi":"10.4028/p-2fxrkw","DOIUrl":"https://doi.org/10.4028/p-2fxrkw","url":null,"abstract":"Electrical tree is a topic that has been extensively studied in recent years. Electrical tree is considered a deterioration of the electrical insulator due to the high voltage field's distortion. Solid insulating materials used in high voltage applications, such as epoxy resin are widely employed due to their high dielectric strength and excellent mechanical properties. This research studies the effect of micro and nanoparticles of Al2O3 and SiO2 on electrical tree inhibition in epoxy resin insulators. Electrical tree inhibition is achieved by incorporating micro and nanoparticles into the polymer material, which possess different properties. Following ASTM D 3756-97, the experiment is conducted with a constant 22 kV voltage and frequency of 50 Hz. Both Al2O3 and SiO2 possess the ability to inhibit the growth of the electrical tree. Experimental results revealed that the addition of Al2O3 and SiO2 to the epoxy resin affected the formation of electric trees. As the quantity of filler increases, fewer electric trees are produced. Additionally, It has an effect on the initial formation time of electric trees. The initial time of the electric tree with the addition of micro/nano(1/3) Al2O3 additives at a ratio of 0.1 wt% was 3.5 times longer when compare with pure epoxy resin.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"13 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140410107","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

Weibull Technique for Evaluation of Swelling: Composite Graphite Resin Electrode for Electrochemical Treatment of Gold Mining Wastewaters 评估膨胀的威布尔技术用于金矿废水电化学处理的复合石墨树脂电极

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-t1xgm5

Kunle Opeyemi Olayanju, K. Bolorunduro, I. Oke

{"title":"Weibull Technique for Evaluation of Swelling: Composite Graphite Resin Electrode for Electrochemical Treatment of Gold Mining Wastewaters","authors":"Kunle Opeyemi Olayanju, K. Bolorunduro, I. Oke","doi":"10.4028/p-t1xgm5","DOIUrl":"https://doi.org/10.4028/p-t1xgm5","url":null,"abstract":"This paper evaluated the swelling of graphite resin electrodes developed for utilization in the electrochemical treatment of gold mining wastewater. Graphite-resin electrodes were developed from used dry cells and resin using non-heat treatment processes (segregation). The Microstructure of the electrode was determined using a scanning electron microscope (Carl Zeiss Smart Evo 10) to ascertain the composition of the electrode. The swelling property of the electrodes was measured using the standard method through a combination of gold mining wastewater and chloride salt solutions. Effects of operational factors (particle size, percentage binder and compressive “compacting” pressure) on the swelling of the electrodes were monitored and evaluated statistically (using analysis of variance). Weibull probability distribution (2 and 3 parameters) was applied to the swelling through Microsoft Excel Solver and Moment Likelihood Method to ascertain the usefulness of the electrode in environmental pollution control through computation of reliability. The study revealed that the swelling was in the range of 1.48 % to 2.24 %, particle size (F5,20 =196.48, p = 2.76 x 10-16), percentage binder (F4,12 =181.58, p = 1.27 x 10-10), and compressive pressure (F3,12 = 106.69, p = 6.43 x 10-9) were significant factors that influence swelling of graphite-resin electrode at 95 % confidence level. the values of α and β for 2-parameters Weibull distribution are 63.162 and 15.098, and 1.265 and 10.089 for MSE and MLM methods, respectively. The Table shows that the values of α, β and θ for 3-parameters Weibull distribution are 3.679, 8.097 and 0.168, and 4.350, 7.165 and 0.198 for MSE and MLM methods, respectively. It was concluded that particle size and compacting pressure are significant factors that had an effect on the swelling of graphite resin electrodes for treatment water and wastewater.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"33 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140411574","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

Evaluation of Marine Atmospheric Environmental Adaptability of 3238A/CCF300 Composite Material 评估 3238A/CCF300 复合材料的海洋大气环境适应性

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-nfie6v

Jian Kun Wang, Jin Mei Wang, Ming Liu

引用次数: 0

Novel Enhancement Opportunities in the Thermal and Electrical Conductivity of α-Al-CNTs+AgNPs Nanocomposites 提高 αAl-CNTs+AgNPs 纳米复合材料导热性和导电性的新机遇

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-jo9h3f

P. Ozor, V. S. Aigbodion, Nkiruka Eveth Nwobodo-Anyadiegwu

引用次数: 0

Enhanced the Bagasse Corrugated Fiber Composite Roofing Properties with Adhesive Substances 用粘合剂增强甘蔗渣波纹纤维复合屋面的性能

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-zkgmc7

Phoopat Bharuedha, S. Prayoon, B. Kittisak

引用次数: 0

Flexural Strength of Kenaf Fibers/Epoxy Bio-Composites: Content of Kenaf Fiber, Curing Times and Curing Temperatures Kenaf 纤维/环氧生物复合材料的挠曲强度：Kenaf 纤维含量、固化时间和固化温度

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-j6xjce

H. Suherman, Idial Vatra, Talitha Amalia Suherman, I. Irmayani

引用次数: 0

Comparative Examination of Cellulose Nanosphere from Corn Husk and Rice Straw 玉米秸秆和水稻秸秆纤维素纳米圈的比较研究

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-btm3ib

Rohit C. Tilwani, P. A. D. De Yro, Hirofumi Nakano

{"title":"Comparative Examination of Cellulose Nanosphere from Corn Husk and Rice Straw","authors":"Rohit C. Tilwani, P. A. D. De Yro, Hirofumi Nakano","doi":"10.4028/p-btm3ib","DOIUrl":"https://doi.org/10.4028/p-btm3ib","url":null,"abstract":"Cellulose nanosphere (CNS) is a novel material isolated through delignification, bleaching, acid hydrolysis, dialysis, and sonication of cellulose fibers from agricultural wastes such as corn husk and rice straw. Comparative examination through multiple characterizations of CNS from these cellulose sources was conducted to investigate its potential applications. Corn husk cellulose nanospheres (CHCNS) and rice straw cellulose nanospheres (RSCNS) were characterized by its chemical characteristics, crystallinity, surface morphology and thermal stability. FTIR showed the same transmittance patterns for both CNS samples. The peaks for CHCNS and RSCNS in the NMR analysis were comparable, and the presence of toluene enabled the CNS dissolve better in DMSO-d6. Higher crystallinity index was calculated in CHCNS than in RSCNS according to XRD analysis. TEM analysis demonstrated that CHCNS has shorter diameter than RSCNS. Lower onset degradation temperature relative to their corresponding bleached cellulose fiber was determined through TG Analysis. Biomedical applications such as drug delivery, wound dressings and tissue engineering are the most suitable applications based on the profiles of both CNS samples.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140414850","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