Materials Processing & Manufacturing eJournal最新文献_第4页

Effects of Microstructures of Foam Core on the Thermal Shock Strength of Ceramic Foam Sandwich Structures 泡沫芯的微观结构对陶瓷泡沫夹层结构热冲击强度的影响

Materials Processing & Manufacturing eJournal Pub Date : 2020-05-01 DOI: 10.2139/ssrn.3522172

Z. Li, K.F. Wang, J. Li, B. Wang

引用次数: 6

COVID-19 and Broadband Speeds: A Multi-Country Analysis 2019冠状病毒病与宽带速度:多国分析

Materials Processing & Manufacturing eJournal Pub Date : 2020-05-01 DOI: 10.2139/ssrn.3689044

George S. Ford

引用次数: 2

Devising a Corrosion Inhibitor for Steel ST37-2 in a Water-Oil Mixture ST37-2钢在水-油混合物中的缓蚀剂设计

Materials Processing & Manufacturing eJournal Pub Date : 2020-04-30 DOI: 10.15587/1729-4061.2020.199849

N. Gomelya, I. Trus, O. Stepova, O. Kyryliuk, O. Ivanenko, Anna Homenko

{"title":"Devising a Corrosion Inhibitor for Steel ST37-2 in a Water-Oil Mixture","authors":"N. Gomelya, I. Trus, O. Stepova, O. Kyryliuk, O. Ivanenko, Anna Homenko","doi":"10.15587/1729-4061.2020.199849","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.199849","url":null,"abstract":"Corrosion elimination implies the application of corrosion-resistant alloys, which is associated with high costs and is not a reliable enough technique, as well as corrosion inhibitors, which need to be constantly improved to improve their efficiency and bring down the cost. As corrosion is characterized by the destruction of a material as a result of interaction with the environment, one of the expedient methods for its minimization is the use of inhibitors. Therefore, it is a relevant task for environmental protection and economic development of the country to devise effective means to protect metals against corrosion. The reported inhibitor AC-2 (the solution of a mixture of 2-alkylimidazolines in methanol) rather effectively protects steel against corrosion in water-oil mixtures at the high concentrations of mineral salts in water. The efficacy of the inhibitor is almost unaffected by the ratio of the volumes of oil and concentrated aqueous solutions of sodium chloride. When using the inhibitor at a concentration of 50 mg/dm 3 , the degree of protection of steel against corrosion exceeded 90 %. This is due to the fact that the protection of steel against corrosion occurs through the adsorption of the imidazoline components at the metal surface and the adsorption of organic oil components on the hydrophobic alkyl groups of 2-alkylimidazolines. In this case, the hydrophobization of the metal surface proceeds in the presence of minor quantities of oil. It has been shown that in the mixture that contained 200 cm 3 of a 3 % sodium chloride solution and 800 cm 3 of oil at the concentration of acetic acid, respectively, 0.5 and 3.0 g/dm 3 at a temperature of 80 °C at a dose of the inhibitor of 15‒50 mg/dm 3 the efficiency reached 72−92 %. This makes it possible to resolve the issue of the rational use of natural resources and ensures the transition to the application of environmentally safe and energy-efficient technologies","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"67 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88352250","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: 3

Addition of Bio-Additive as a Catalyst of Burning Vegetable Oil Influenced by 4 Pole Magnetic Field 四极磁场对生物添加剂作为植物油燃烧催化剂的影响

Materials Processing & Manufacturing eJournal Pub Date : 2020-04-30 DOI: 10.15587/1729-4061.2020.198308

Gatot Soebiyakto, I. Wardana, N. Hamidi, L. Yuliati

{"title":"Addition of Bio-Additive as a Catalyst of Burning Vegetable Oil Influenced by 4 Pole Magnetic Field","authors":"Gatot Soebiyakto, I. Wardana, N. Hamidi, L. Yuliati","doi":"10.15587/1729-4061.2020.198308","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.198308","url":null,"abstract":"The application of the combustion process influenced by magnetic circle 4 poles sequentially (N-S-N-S) against premixed combustion of vegetable-aromatic oil at an equivalence ratio approaching stoichiometry is studied. The reactant reaction causes the heat transfer to be characterized by the increase in temperature and has the main strength that combines the metal atoms due to the interesting pull (N-S) and (S-N) causing the electrons to move freely due to energy electron. Electron interaction induces the separation of atoms from the reactants, followed by atomisation and fuel transfer into a droplet and then collisions into a smaller droplet, smoother and isolated forming cellular-cellular APIs. The results of the study reported that the magnetic field makes a premixed combustion reaction more intense as the magnetic field makes the spin of the electron and the proton hydrogen become more energetic. More energetic electrons and protons are more actively changing the structure of carbon bonds in saturated and unsaturated fatty acids, both long and short chains. Long-chain saturated fatty acids and polar forms are more active than short and straight because they have a stronger polarity and a more free electron movement. Magnetic field administration makes fire more reactive, faster in the vines, because paramagnetic O 2 is emitted more across the fire from the South Pole (S) to the North (N) while the heat carried by H 2 O that is diamagnetic is emitted more across the fire from the North Pole (N) to the South (S). This event occurs in the shift of magnetic coil U and S. Consequently, in the area of switching, there is the formation of cellular-cellular fire and the growth of radius equivalence","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73838638","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: 1

Heterometallic Titanium-Organic Frameworks as Dual Metal Catalysts for Synergistic Non-Buffered Hydrolysis of Nerve Agent Simulants 异质金属钛-有机骨架作为双金属催化剂在神经毒剂模拟物协同非缓冲水解中的应用

Materials Processing & Manufacturing eJournal Pub Date : 2020-04-17 DOI: 10.2139/ssrn.3569545

J. Castells‐Gil, Natalia M. Padial, Neyvis Almora‐Barrios, R. Gil-San-Millan, María Romero-Angel, V. Torres, I. da Silva, J. Waerenborgh, Jaciek Jagiello, J. Navarro, S. Tatay, C. Martí‐Gastaldo

{"title":"Heterometallic Titanium-Organic Frameworks as Dual Metal Catalysts for Synergistic Non-Buffered Hydrolysis of Nerve Agent Simulants","authors":"J. Castells‐Gil, Natalia M. Padial, Neyvis Almora‐Barrios, R. Gil-San-Millan, María Romero-Angel, V. Torres, I. da Silva, J. Waerenborgh, Jaciek Jagiello, J. Navarro, S. Tatay, C. Martí‐Gastaldo","doi":"10.2139/ssrn.3569545","DOIUrl":"https://doi.org/10.2139/ssrn.3569545","url":null,"abstract":"Summary Mixed-metal or heterometallic metal-organic frameworks (MOFs) are gaining importance as a route to produce materials with increasing chemical and functional complexities. We report a family of heterometallic titanium frameworks, MUV-101(M), and use them to exemplify the advantages of controlling metal distribution across the framework in heterogeneous catalysis by exploring their activity toward the degradation of a nerve agent simulant of Sarin gas. MUV-101(Fe) is the only pristine MOF capable of catalytic degradation of diisopropyl-fluorophosphate (DIFP) in non-buffered aqueous media. This activity cannot be explained only by the association of two metals, but to their synergistic cooperation, to create a whole that is more efficient than the simple sum of its parts. Our simulations suggest a dual-metal mechanism reminiscent of bimetallic enzymes, where the combination of Ti(IV) Lewis acid and Fe(III)–OH Bronsted base sites leads to a lower energy barrier for more efficient degradation of DIFP in absence of a base.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77920075","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: 32

Nitrogen-Doped Carbon/SiO x Composites from Rice Husks as a High-Performance Anode for Lithium-ion Batteries 稻壳中氮掺杂碳/ siox复合材料作为锂离子电池的高性能阳极

Materials Processing & Manufacturing eJournal Pub Date : 2020-04-15 DOI: 10.2139/ssrn.3567478

Jiajia Song, Shuowu Guo, Lingjiang Kou, Hui Liu, K. Kajiyoshi, Jiaxin Su, Peng Zheng

引用次数: 0

Two Sides Rhombus Shaped Cladding Hexagonal PCF with Low Confinement Loss and Negative Dispersion 具有低约束损耗和负色散的双面菱形包覆六角形PCF

Materials Processing & Manufacturing eJournal Pub Date : 2020-04-11 DOI: 10.2139/ssrn.3573506

Amit Kumar, Shahir Uddin, M. Hassan, D. Singh

引用次数: 0

A Low Cost Automation for MFI Analyzer by Using Arduino 基于Arduino的低成本MFI分析仪自动化

Materials Processing & Manufacturing eJournal Pub Date : 2020-04-05 DOI: 10.2139/ssrn.3645360

Venkatesh Shendge, Deepak Borade, Monika Padkodne, S. Narkhede

{"title":"A Low Cost Automation for MFI Analyzer by Using Arduino","authors":"Venkatesh Shendge, Deepak Borade, Monika Padkodne, S. Narkhede","doi":"10.2139/ssrn.3645360","DOIUrl":"https://doi.org/10.2139/ssrn.3645360","url":null,"abstract":"The melt flow index analyzer is a machine used in many plastics, toys making, goods manufacturing, and also in Automobile industries. Because today's 30-40% components of any device are made by plastic, therefore the use of machine is to decide the quality and grading of the plastic which is to be used for different purposes. As in electrical engineering, there is class A, class B, Class F, class Y etc. types of grading of insulators, similarly, plastics have different types of grading. Now suppose we have to make a dashboard of the vehicle and a drinking water bottle by plastic. So the same material cannot be used for making a dashboard and bottle. The material used for making the dashboard should be tough, strong, and should enough robust. But the material used for the bottle should be light in weight, soft, etc. Above mentioned qualities and properties of plastics are decided by the MFI machine. This paper depicts how to decide a grading of plastic using MFI machine with minimum cost. Currently, industrialists want to design goods with optimal properties and minimum costs. One of the requirements for quality control of thermoplastics is the determination of volume and mass flow rates. To ensure in an industry that production is reproducible we must control this index. Knowledge of the quality of the material (injection molding, extrusion) reduces the time and minimizes the cost of production.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73482285","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: 1

Unconfined Compressive Strength of Geopolymer Cement 地聚合物水泥的无侧限抗压强度

Materials Processing & Manufacturing eJournal Pub Date : 2020-03-09 DOI: 10.2139/ssrn.3551123

S. Panda, B. C. Panda

{"title":"Unconfined Compressive Strength of Geopolymer Cement","authors":"S. Panda, B. C. Panda","doi":"10.2139/ssrn.3551123","DOIUrl":"https://doi.org/10.2139/ssrn.3551123","url":null,"abstract":"Red mud is produced by the production of alumina and its disposal is now a global problem. Every year large amounts of red mud are released from the bauxite calcination method and its use has become an urgent problem. The initial study investigates the possible reuse of red mud through geopolymerization and itsreaction with other solid waste, such as fly ash. This document offers a concept that studies the geopolymerization of red mud, the main industrial leftover from the refining of alumina and fly ash, an industrial leftover from the burning of coal, consumingminimummaterials. Different synthesis factors (for example, the ratio of red mud / fly ash, sodium metasilicateNonahydrate solution in a solid mixture (ratio of red mud and fly ash), diverse concentrations of sodium metasilicateNonahydrate solution, etc.). They are altered to have an effect on the evaluation of mechanical properties of the final geopolymer product. In this study, the ratio of red mud to fly ashwas maintained at 50:50 as a constant ratio, the solution to the solid mixture as 1 and the change in concentration of the sodiummetasilicateNonahydrate solution (2M-6M). The outputs of the unconfined compression test display that these aspects have a substantialimpact on the mechanical characteristics of the synthesized geopolymer. Depending on the synthesis circumstances, the unconfirmed compressive strengths range from 2.391 kg / cm² to 10.963 kg / cm² and high values can be compared with some types of Portland cement. The results shows the two most important industrial leftovers, red mud and fly ash, can be reutilised to produce geopolymers that can substitute Portland cement and can further be used in the construction of civil infrastructure.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"305 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79837098","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

New Mg-Ca-Zn Amorphous Alloys: Biocompatibility, Wettability and Mechanical Properties 新型Mg-Ca-Zn非晶合金:生物相容性、润湿性和力学性能

Materials Processing & Manufacturing eJournal Pub Date : 2020-03-05 DOI: 10.2139/ssrn.3547684

Sudeep Paul, P. Ramasamy, M. Das, D. Mandal, O. Renk, M. Călin, J. Eckert, S. Bera

{"title":"New Mg-Ca-Zn Amorphous Alloys: Biocompatibility, Wettability and Mechanical Properties","authors":"Sudeep Paul, P. Ramasamy, M. Das, D. Mandal, O. Renk, M. Călin, J. Eckert, S. Bera","doi":"10.2139/ssrn.3547684","DOIUrl":"https://doi.org/10.2139/ssrn.3547684","url":null,"abstract":"Abstract Mg-Ca-Zn alloys are considered to be biodegradable materials and nontoxic to the living cell. Thus, they are promising candidates for use in orthopedic applications. In the present work, two new Mg-based glassy alloys (Mg72Ca12Zn16 and Mg63Ca15Zn22) are synthesized by melt spinning. The prospect of these alloys for biomedical application is assessed by evaluating and comparing their mechanical properties, biodegradation and biocompatibility with the well established glassy alloy composition, Mg60Ca5Zn35, synthesized under identical conditions. With decreasing Zn content in the composition, the density of the melt spun alloys decreases. The new alloys show lower hardness and an about ~35% lower Young's modulus than the Mg60Ca5Zn35 alloy. In vitro degradation behavior in Hank's balanced salt solution (HBSS) solution yields a higher degradation rate for the new alloys than for the existing Mg60Ca5Zn35 alloy. Degradation products are characterized using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR), confirming the presence of magnesium hydroxide (Mg(OH)2), hydroxyapatite (HAp), and ternary calcium magnesium zinc (Ca2Mg6Zn3) phases. In vitro biocompatibility studies with a mouse osteoblast cell line (MC3T3-E1) clearly demonstrates the non-cytotoxic nature of the alloys. The results altogether suggest possible biomedical applications of the new Mg-based glassy alloys.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87326574","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: 24