Emerging Materials Research最新文献_第4页

Fabrication process optimization and characterization of nHA-CNTs reinforced PEEK hybrid nanocomposite nHA-CNTs增强PEEK杂化纳米复合材料制备工艺优化及表征

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-09-01 DOI: 10.1680/jemmr.22.00018

Rajesh Kumar, Manjeet Kumar, Sandeep Kumar

{"title":"Fabrication process optimization and characterization of nHA-CNTs reinforced PEEK hybrid nanocomposite","authors":"Rajesh Kumar, Manjeet Kumar, Sandeep Kumar","doi":"10.1680/jemmr.22.00018","DOIUrl":"https://doi.org/10.1680/jemmr.22.00018","url":null,"abstract":"Compression molding is the leading fabrication process for polymer composites. The settings of process parameters highly influence the mechanical properties of composites. This manuscript optimizes the ball mixing and compression molding process parameters for the fabrication of PEEK, multiwall carbon nanotubes, and nano-hydroxyapatite-based hybrid nanocomposite by the Taguchi method. The elastic modulus examined by the nanoindentation method of static mechanical analysis was taken as the output response variable. The optimum levels of mixing time, mold temperature, mold pressure, and holding time process parameters for maximum elastic modulus were found to be 90 minutes, 400 °C, 150 bar, and 15 minutes, respectively. The ‘Analysis of Variance’ technique analyzed that the mold temperature had the highest contribution (46.82%) in enhancing the elastic modulus to the largest value. The elastic modulus and hardness of PEEK-based hybrid nanocomposite with 30 wt.% nHA and 3 wt.% MWCNTs were observed to be 83% and 65% more than that of pure PEEK. The hydrophilicity of PEEK was improved with the reinforcement of nHA, attributed to the presence of oxygen-containing functional groups in the chemical structure of nHA.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45746727","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}

引用次数: 1

Simulation study of defect density on the performance of quantum dot solar cell with PTAA HTL layer using SCAPS-1D 缺陷密度对PTAA HTL层量子点太阳能电池性能的SCAPS-1D模拟研究

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-09-01 DOI: 10.1680/jemmr.22.00130

Ahmad Umar, Vaishali Yadav, V. Srivastava, Sadanand, P. Lohia, D. K. Dwivedi, A. Ibrahim, S. Akbar, H. Qasem, S. Baskoutas

引用次数: 1

Hydrothermally grown CdS-embedded graphene oxide nanocomposites with enhanced optical properties 水热生长的CdS嵌入氧化石墨烯纳米复合材料具有增强的光学性能

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-09-01 DOI: 10.1680/jemmr.22.00019

J. B. Kaundal, R. Tiwari, Y. Goswami

引用次数: 1

Iron materials facilitated methane production from anaerobic wastewater treatment 铁材料促进厌氧废水的甲烷生成

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-09-01 DOI: 10.1680/jemmr.23.00034

Y. Wang, Jichun He, B. Xu, Nahid A Osman, Hassan Algadi, H. Abo-Dief, Na Lu, P. Wasnik, D. Sridhar, Abdullah K. Alanazi, Qinglong Jiang, B. Qiu, Zhanhu Guo

{"title":"Iron materials facilitated methane production from anaerobic wastewater treatment","authors":"Y. Wang, Jichun He, B. Xu, Nahid A Osman, Hassan Algadi, H. Abo-Dief, Na Lu, P. Wasnik, D. Sridhar, Abdullah K. Alanazi, Qinglong Jiang, B. Qiu, Zhanhu Guo","doi":"10.1680/jemmr.23.00034","DOIUrl":"https://doi.org/10.1680/jemmr.23.00034","url":null,"abstract":"Various iron materials have been used to improve methane production rate in the anaerobic sludge. The effect of iron materials including zerovalent iron (ZVI), magnetite (Fe3O4) and iron (III) oxide (Fe2O3) on the methane production rate was compared. It was found that all the iron materials can improve the methane production rate, and ZVI, Fe3O4 and Fe2O3 increased by 19.8%, 13.7% and 17.9% in which the ZVI performed better on improving the methane production. Then the long-term effects of ZVI on the methane production rate by anaerobic organisms was further studied. ZVI increased the methane production rate by 7.2%, the improvement was unstable and decreased due to the corrosion and loss of the ZVI in the anaerobic wastewater treatment system. The improved performance was recovered after the ZVI was re-added into the anaerobic sludge, the methane production rate increased by 6.1%. The added ZVI obviously enriched exoelectrogenic archaea Methanobacterium due to its ability of direct interspecific electron transfer, and its relative abundance was up to 61.99%. The enhanced direct interspecific electron transfer was disclosed as the main mechanism involved in enhanced methanogenesis in the anaerobic sludge.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48794648","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}

引用次数: 1

CMT-based wire arc additive manufacturing of Inconel 625 alloy 铬镍铁合金625的CMT基电弧增材制造

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-09-01 DOI: 10.1680/jemmr.23.00053

J. Junwen, A. Zavdoveev, D. Vedel, T. Baudin, S. Motrunich, I. Klochkov, S. Friederichs, N. Strelenko, M. Skoryk

{"title":"CMT-based wire arc additive manufacturing of Inconel 625 alloy","authors":"J. Junwen, A. Zavdoveev, D. Vedel, T. Baudin, S. Motrunich, I. Klochkov, S. Friederichs, N. Strelenko, M. Skoryk","doi":"10.1680/jemmr.23.00053","DOIUrl":"https://doi.org/10.1680/jemmr.23.00053","url":null,"abstract":"Cold metal transfer (CMT) technology is considered in an application for wire arc additive manufacturing WAAM of refractory high corrosion resistant Inconel 625 alloy. Based on the fabricated wall it has been shown the suitability of CMT WAAM for the sound formation of weld and homogenous distribution of mechanical properties has been shown. Microscopy analysis has revealed that the microstructure of the deposited alloy along the height of the wall element is relatively uniform. The minor differences in the microstructure are observed in the bottom part, caused by welding specifically. It should be noted that there is a slight decrease in strength indicators from the bottom to the top of the welded product, but they do not exceed 5%, which is considered entirely satisfactory. This phenomenon is caused by structural transformations that take place in slightly different cooling conditions, namely in the lower layers, the substrate on which the surfacing was carried out plays a more significant role in heat flow. This leads to more intensive cooling of the lower layers and as a result slightly higher values of strength.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43479805","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}

引用次数: 1

Effect of Magnetic field on dielectric properties in PLT/BNCFO composites 磁场对PLT/BNCFO复合材料介电性能的影响

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-06-01 DOI: 10.1680/jemmr.22.00183

I. Sharma, Shruti Mahajan, V. Arora, Mehak Arora, Nitin Mahajan, Kanika Aggarwal, Anupinder Singh

{"title":"Effect of Magnetic field on dielectric properties in PLT/BNCFO composites","authors":"I. Sharma, Shruti Mahajan, V. Arora, Mehak Arora, Nitin Mahajan, Kanika Aggarwal, Anupinder Singh","doi":"10.1680/jemmr.22.00183","DOIUrl":"https://doi.org/10.1680/jemmr.22.00183","url":null,"abstract":"The main goal of this study is to analyze the magnetic, dielectric, and magneto-dielectric characteristics of Pb1− x La x Ti1− x O 3 - (Ba1–3 x Nd2 x )4Co2Fe36O60 (where x = 0.25) composite material at various temperatures T1-T3 (i.e 1100°C ,1200°C, 1300°C respectively). The X-ray diffraction investigation has been introduced in order to pinpoint the creation of the U-type hexaferrite phase. SEM micrographs reveal that sample sintered at T2 reached the maximum value of grain size and the largest experimental density value of 6.14 g/cm3 due to the composite material's intensified grain growth. The magnetic investigations further indicate that the sample T2 achieved the highest remnant magnetization, measuring 1.550 emu/g, revealing the accuracy of the sintering temperature. The magneto-dielectric investigations demonstrate the presence of multiferroicity in all samples, and came to the conclusion that sample T2 exhibits the highest magneto-dielectric response of 41.99 at 1.2 Tesla and a magneto-dielectric coefficient (γ) of around 0.7609 g2/emu2. Numerous metrics, including nyquist plots, impedance, electrical modulus, dielectric constant, and conductivity, were carefully examined in order to determine the electrical properties of the proposed sample. It was found that sample T2 produced the enhanced results and had the right temperature for the substance to develop.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48630431","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}

引用次数: 1

Editorial: Materials for a more sustainable usage 社论:更可持续使用的材料

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-06-01 DOI: 10.1680/jemmr.2023.12.2.101

F. Heim

引用次数: 0

Effect of Magnetite on physical, tribological and magnetic characteristics of Kenaf fiber 磁铁矿对红麻纤维物理、摩擦学和磁性质的影响

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-06-01 DOI: 10.1680/jemmr.22.00162

S. Pujari, S. Santosh Kumar, N. Naveen, C. Devi, Sivarao

引用次数: 1

Investigation of failure mechanism of dissimilar resistance spot welding of steels 钢异种电阻点焊失效机理的研究

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-06-01 DOI: 10.1680/jemmr.22.00224

M. Prabhakaran, D. Jeyasimman, M. Varatharajulu

{"title":"Investigation of failure mechanism of dissimilar resistance spot welding of steels","authors":"M. Prabhakaran, D. Jeyasimman, M. Varatharajulu","doi":"10.1680/jemmr.22.00224","DOIUrl":"https://doi.org/10.1680/jemmr.22.00224","url":null,"abstract":"Austenitic and Duplex Stainless steel was majorly preferred for the heat exchangers and the chemical containers. This research work proposed to investigate the failure mechanism of dissimilar welded joints of AISI 347 and DSS 2205. The welded specimens were investigated under tensile shear test, cross tension test, coach peel test, and micro-hardness test. The specimen absorbed a maximum tensile shear load of 18 kN during the tensile shear test and the failure mode was button pull out with brittle fracture. The test sample absorbed a load of 15.1 kN during the cross tension test and the failure mode was button pull out with brittle fracture. During coach peel test, the sample absorbed a maximum load of 4 kN and ductile fracture was witnessed at the vicinity of the nugget. The failure mode in coach peel test was button pull out type. The microhardness test recorded a maximum hardness of 312.8 HV which is 78.74% and 7.1% higher than the base metal hardness values of AISI 347 and AISI 2205 respectively. The specimen failed under pull out failure mode in all the tests and hence the weld zone was intact in all the specimen arrangement and loading conditions.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42036213","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}

引用次数: 1

Photocatalytic performance of Nd-TiO2 coatings: effect of voltage and frequency Nd-TiO2涂层的光催化性能：电压和频率的影响

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-06-01 DOI: 10.1680/jemmr.22.00063

Yuanji Shi, Y.Q. Dai, Junwan Li, Cheng Cheng, Jingxiao Li

引用次数: 1