International Journal of Materials Science and Applications最新文献_第5页

Comparative Analysis of the Effect of Fibre Architecture on the Tensile Properties of Sisal Fibre Reinforced Polyethylene Polymer Composite 纤维结构对剑麻纤维增强聚乙烯聚合物复合材料拉伸性能影响的对比分析

International Journal of Materials Science and Applications Pub Date : 2022-01-01 DOI: 10.11648/j.ijmsa.20221102.12

Mohammed Umar Faruk, Ladan Ibrahim Fakai

引用次数: 0

Contribution to the Study of the Thermal, Rheological and Morphological Properties of Biocomposites Based on Typha/PP 基于Typha/PP的生物复合材料的热、流变和形态学研究

International Journal of Materials Science and Applications Pub Date : 2022-01-01 DOI: 10.11648/j.ijmsa.20221101.15

B. Niang, Abdou Karim Farota, Abdoul Karim Mbodji, Nicola Schiavone, H. Askanian, V. Verney, Diène Ndiaye, Abdoulaye Bouya Diop, B. Diop

引用次数: 1

Suitable Na2O-SiO2, BaO-SiO2 Based Coatings for Stainless Steels 适用于不锈钢的na20 - sio2, BaO-SiO2基涂料

International Journal of Materials Science and Applications Pub Date : 2021-11-15 DOI: 10.32732/jma.2021.10.2.90

A. Faeghinia, E. Jabbari

引用次数: 0

Irradiation Hardening and Microstructure Characterization of Zr -1% Nb During Low Dose Neutron Irradiation Zr -1% Nb在低剂量中子辐照下的辐照硬化及微观结构表征

International Journal of Materials Science and Applications Pub Date : 2021-11-15 DOI: 10.32732/jma.2021.10.2.63

C. Vazquez, E. Zelaya, A. Fortis, P. Bozzano

{"title":"Irradiation Hardening and Microstructure Characterization of Zr -1% Nb During Low Dose Neutron Irradiation","authors":"C. Vazquez, E. Zelaya, A. Fortis, P. Bozzano","doi":"10.32732/jma.2021.10.2.63","DOIUrl":"https://doi.org/10.32732/jma.2021.10.2.63","url":null,"abstract":"Due to low neutron absorption cross section, high mechanical strength, high thermal conductivity and good corrosion resistance in water and steam, Zirconium alloys are widely used as fuel cladding material in nuclear reactors. During life-time of a reactor the microstructure of this alloy is affected due to, among other factors, radiation damage and hydrogen damage. In this work mechanical properties changes on neutron irradiated Zr-1wt.% Nb at low temperatures (< 100 °C) and low dose (3.5 ´ 1023 n m-2 (E > 1 MeV)) were correlated with hydrides and crystal defects evolution during irradiation. To achieve this propose, tensile tests of: 1) Non-hydrided and non-irradiated material, 2) Hydrided and non-irradiated material and 3) Hydrided and irradiated material were performed at 25 ºC and 300 ºC. Different phases, hydrides and second phase precipitates were characterized by transmission electron microscopy (TEM) techniques. For the hydrided and irradiated material, the ductility decreased sharply with respect to the hydrided and non-irradiated material, among other factors, due to the change in the microstructure produced mainly by neutron irradiation. Even if the presence of the hydride ζ (zeta) was observed, both in the irradiated and non-irradiated material, tensile tests showed that ζ-hydrides did not affect ductility, since hydrided samples are more ductile than non-hydrided samples.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75928805","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

Development and Research Status of ZA27 Zinc Alloy ZA27锌合金的发展与研究现状

International Journal of Materials Science and Applications Pub Date : 2021-10-21 DOI: 10.11648/J.IJMSA.20211005.15

Wang Heng, M. Yiming

{"title":"Development and Research Status of ZA27 Zinc Alloy","authors":"Wang Heng, M. Yiming","doi":"10.11648/J.IJMSA.20211005.15","DOIUrl":"https://doi.org/10.11648/J.IJMSA.20211005.15","url":null,"abstract":"In recent years, due to the rapid development of industry, the manufacturing processing quality was required to be higher and higher day by day, which made a major breakthrough in the research of metal materials. A series of new technologies and processes have been developed. The application and promotion of these technologies and processes have greatly improved the technical level of the non-ferrous metal industry, especially in the field of zinc alloy. ZA27 zinc alloy received extensive attention during this period. ZA27 zinc alloy is widely used in automobiles, construction, household appliances, ships, light industry, machinery, batteries and other industries due to its excellent wear resistance, friction reduction and mechanical properties. For these reasons, ZA27 zinc alloy has become a good substitutive material for copper alloy. In this paper, according to the research history and current situation of ZA27 zinc alloy around the world, the effects of different adding elements and the characteristics of different processes were comparatively analyzed, and summarized the progress at home and abroad. At the same time, this paper pointed out the problems existing in the development and production of ZA27 zinc alloy, which provided the basis for the development of ZA27 zinc alloy in the future.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77406669","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 the Mechanical Behavior of Clay Bricks Stabilized at 4% Cement and Mixed with Limba Wood Waste 掺林巴木废料的4%水泥稳定粘土砖力学性能评价

International Journal of Materials Science and Applications Pub Date : 2021-10-16 DOI: 10.11648/J.IJMSA.20211005.14

H. Elenga, Ferland Ngoro-Elenga, M. Tchoumou, Jude Novelgi Ngakosso Ngolo, Ottard Mwa Ngo Ossiby, T. Nsongo

{"title":"Evaluation of the Mechanical Behavior of Clay Bricks Stabilized at 4% Cement and Mixed with Limba Wood Waste","authors":"H. Elenga, Ferland Ngoro-Elenga, M. Tchoumou, Jude Novelgi Ngakosso Ngolo, Ottard Mwa Ngo Ossiby, T. Nsongo","doi":"10.11648/J.IJMSA.20211005.14","DOIUrl":"https://doi.org/10.11648/J.IJMSA.20211005.14","url":null,"abstract":"In this study, the authors evaluated the mechanical behavior of bricks made of clay material stabilized with 4% cement and mixed with different contents (0; 2; 4; 6 and 8%) of limba wood waste (sawdust and chips). The clayey raw material ANMK was characterized by the method of X-ray diffraction (XRD) on oriented sheets (normal, glycol and heated to 490°C), by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The chemical and mineralogical compositions of cement used were determined by inductively coupled plasma – optical emission spectrometry (ICP-OES) and by X-ray diffraction. This clay material consists of 96% kaolinite and 4% of the chlorite / montmorillonite interstratified. The morphology of the material observed by scanning electron microscopy showed an irregularity of clusters. The elementary analysis by energy dispersive spectroscopy shows that this material is essentially aluminosilicate. The chemical analysis of the cement showed a predominance of CaO (67%) and SiO2 (21%), however the mineralogical analysis showed the presence of calcite, alite, hatrurite and brownmillerite. This clay material has a mass shrinkage on drying of 26.6% and the linear shrinkage is 6.4%. The formulation with sawdust appears to give greater flexural and compressive strengths than those obtained with chips.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82655591","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

Heat Transfer and Solidification Methodology Involved in the Simulation of Steelmaking 炼钢过程模拟中涉及的传热和凝固方法

International Journal of Materials Science and Applications Pub Date : 2021-10-15 DOI: 10.11648/J.IJMSA.20211005.13

Nitin Amratav, K. K. Kumar, M. Pillai

{"title":"Heat Transfer and Solidification Methodology Involved in the Simulation of Steelmaking","authors":"Nitin Amratav, K. K. Kumar, M. Pillai","doi":"10.11648/J.IJMSA.20211005.13","DOIUrl":"https://doi.org/10.11648/J.IJMSA.20211005.13","url":null,"abstract":"The research work done in the last three decades has made continuous casting an advanced and sophisticated technology. The continuous casting process comprises many complicated phenomena in terms of fluid flow, heat transfer and structural deformation. The important numerical modeling method of the continuous casting process has been discussed in reference in this work. The present work describes molten steel flow, heat transfer, solidification, formation of the shell by solidification and coupling, etc. Continuous casting process is presently a well-established manufacturing process for steel production. The continuous casting process comprises many complicated phenomena in terms of fluid flow, heat transfer, and structural deformation. To achieve efficient and effective production, the manufacturers of steel keep on searching for new methods which increase productivity. One such kind of method has become more popular to use optimizing using numerical modeling. It describes molten steel flow, formation of the shell by solidification. With the recent advancement in metallurgical methods, the continuous casting process now becomes the main method for steel production. To achieve efficient and effective production, the manufacturers of steel keep on searching for new methods which increase productivity. In this work, we have studied and reviewed the literature to provide current information on the numerical modeling of continuous casting processes.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87535625","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

Toward Low-Energy Spark-Plasma Sintering of Hot-Deformed Nd-Fe-B Magnets 热变形Nd-Fe-B磁体低能火花等离子烧结研究

International Journal of Materials Science and Applications Pub Date : 2021-09-29 DOI: 10.11648/J.IJMSA.20211005.12

M. Korent, M. Soderznik, Urška Ročnik, S. Drev, K. Rožman, S. Šturm, S. Kobe, K. Ž. Soderžnik

{"title":"Toward Low-Energy Spark-Plasma Sintering of Hot-Deformed Nd-Fe-B Magnets","authors":"M. Korent, M. Soderznik, Urška Ročnik, S. Drev, K. Rožman, S. Šturm, S. Kobe, K. Ž. Soderžnik","doi":"10.11648/J.IJMSA.20211005.12","DOIUrl":"https://doi.org/10.11648/J.IJMSA.20211005.12","url":null,"abstract":"High-coercivity Nd-Fe-B permanent magnets are key materials for producing electrical components on the macro- and nanoscale. We present a newly developed, economically efficient method for processing Nd-Fe-B magnets based on spark-plasma sintering (SPS) that makes it possible to retain the technologically essential properties of the magnet, but by consuming about 30% less energy compared to the conventional SPS process. A magnet with an anisotropic microstructure was fabricated from MQU-F commercial ribbons with a low energy consumption (0.37 MJ) during the deformation process and compared to a conventionally prepared hot-deformed magnet that consumed three-times more energy (1.2 MJ). Both magnets were post-annealed at 650°C for 120 min in a vacuum. After the post-annealing process, the low-energy processing (LEP) hot-deformed magnet exhibited a coercivity of 1327 kAm-1, and a remanent magnetization of 1.27 T. In comparison, the high-energy processing (HEP) hot-deformed magnet had a coercivity of 1337 kAm-1 and a remanent magnetization of 1.31 T. A complete microstructural characterization and detailed statistical analyses revealed a better texture orientation for the HEP hot-deformed magnet processed with the larger energy consumption. This texture is the main reason for the difference in the remanent magnetization between the two hot-deformed magnets. The results show that although the LEP hot-deformed magnet was processed with three-times less energy than in a typical hot-deformation process, the maximum energy product is only 8% lower than that of a HEP hot-deformed magnet.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73087573","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

Spintronics: Overview on Spin Based Electronics and Its Potential Applications 自旋电子学:自旋电子学综述及其潜在应用

International Journal of Materials Science and Applications Pub Date : 2021-09-11 DOI: 10.11648/J.IJMSA.20211005.11

Bushra Irfan

引用次数: 0

Genotoxicity Induced by Cellular Uptake of Chitosan Nanoparticles in Human Dental Pulp Cells 壳聚糖纳米颗粒对人牙髓细胞的遗传毒性研究

International Journal of Materials Science and Applications Pub Date : 2021-07-15 DOI: 10.11648/J.IJMSA.20211004.11

Rami Alhomrany, Chang Zhang, L. Chou

{"title":"Genotoxicity Induced by Cellular Uptake of Chitosan Nanoparticles in Human Dental Pulp Cells","authors":"Rami Alhomrany, Chang Zhang, L. Chou","doi":"10.11648/J.IJMSA.20211004.11","DOIUrl":"https://doi.org/10.11648/J.IJMSA.20211004.11","url":null,"abstract":"Objective: Recent in vitro studies have shown that chitosan nanoparticles in several root canal sealers, intracanal medicament, and irrigation solutions could enhance the antimicrobial activity. However, the nanotoxicity of chitosan has not been fully studied. The aim of this study was to evaluate cellular uptake and genotoxicity of various sizes and concentrations of chitosan nanoparticles cultured with human dental pulp cells. Methods: Human dental pulp cells were derived from human dental pulp tissues and cultured for 24 hours with 50 nm and 318 nm FITC-tagged chitosan nanoparticles in concentrations: 0.1 mg/mL, 0.5 mg/mL, and 2 mg/mL as study groups, and 0 mg/mL as a control. The fluorescence intensity of the FITC tagged chitosan nanoparticles was measured using a spectrophotometer to determine the cellular uptake. Genotoxicity was assessed by the Cytokinesis-block micronucleus method and by measuring the fluorescent intensity of the phosphorylated H2AX nuclear foci. Statistical analysis was performed using One-Way ANOVA, post-hoc Tukey, and Chi-square tests. Results: Chitosan nanoparticles were able to internalize the human dental pulp cells and significantly induced micronuclei, nuclear buds, and pH2AX foci at concentrations of 0.5 mg/mL and 2 mg/mL as compared to 0.1 mg/mL (P < 0.01) and control group (P < 0.01). At both concentrations, 0.5 mg/mL and 2 mg/mL, 50 nm chitosan significantly induced higher proportions of micronuclei (P=0.001), nuclear buds (P=0.009), and pH2AX nuclear foci (P=0.00004) as compared to 318 nm chitosan. Conclusion: 50 nm and 318 nm chitosan nanoparticles at concentrations 0.5 mg/mL and 2 mg/mL penetrated human dental pulp cells and induced genotoxicity in dose-dependent and size-associated manners.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82405595","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: 2