{"title":"Recycling of waste electrical cables","authors":"F. Arslan, C. Çelik, C. Arslan","doi":"10.15406/mseij.2019.03.00099","DOIUrl":"https://doi.org/10.15406/mseij.2019.03.00099","url":null,"abstract":"Today, recycling and recovery of valuable metals from all sorts of waste are the most commonly discussed and heavily researched fields. One of the main reasons of this is both the global warming and ever increasing amounts of waste and scrap material. Severe regulations and legislations are passed in developed countries’ parliaments in order to recycle the produced goods when their economic lives are over. A steady decrease is observed in our natural resources due to changes in our habits of consumption, in parallel to the increasing world population. Therefore, recycling of valuable waste by decreasing the amount of material consumed constitutes an important agenda.1 Changes in the habits of consumption cause the formation of various sorts of waste material. One of those various waste materials is “electronic equipment waste”, briefly addressed as e-waste. Due to the unprecedented development of today’s technologies, electronic equipments which have faster, more efficient, more stylish, and more economical marketing trends will be either incapable of working in one or six-year-period or repairing them will be more costly than their new ones. Thus, the electronic equipment once bought with a high price, will be either given away to the scrap dealers or thrown out to the garbage unconsciously, as the developing technology is presented more economically. That is how the problem of modern age, e-waste, was born.2 It is obvious that our natural resources are limited and will be shortly exhausted unless properly used. Developed countries which realized that the resources were being jeopardized by the energy crisis, conducted research and developed methods for collecting and recycling wastes, in order to prevent the extravagance and conserve the natural resources. With this in mind, the member countries of the European Economic Community regulated that the recycling of electronic equipments’ wastes an imperative action. By the same token, the infrastructure work is being conducted in Turkey and some important arrangements are being accomplished.3 In a general sense, recycling concept is actually transforming the waste to secondary raw material by some physical and chemical processes and re-joining to the production process.4 Waste cable recycling is widely utilized both in Turkey and in the world. Waste cables are important source raw material in terms of their non-ferrous metal content. In Germany alone, about 150.000tons of waste cable is generated annually. Cables that materialize as a result of repairs, telephone line cables, or cables that are produced defectively are some them. Numerous varieties exist in isolation materials, other than the copper, aluminum, lead, and steel; namely, PE and rubber coatings, various kinds PVC’s, woven plastics, etc.1 Environment and Forestry Ministry of Turkey published a legislation regarding the collecting, recycling, and proper disposal of e-wastes. As of 1 July 2012, producers will be responsible for financing ","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89284497","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}
C. Ríos-Reyes, Erika Daniela Nunez-Alarcon, Laura Sofia Puentes-Arguello, Juan Camilo BarriosLopez, L. Moreno-González, J. A. H. Martínez
{"title":"Mineralogical characterization of an ancient pottery from the la Candelaria archaeological site, Santa Helena del Opón, Santander (Colombia)","authors":"C. Ríos-Reyes, Erika Daniela Nunez-Alarcon, Laura Sofia Puentes-Arguello, Juan Camilo BarriosLopez, L. Moreno-González, J. A. H. Martínez","doi":"10.15406/mseij.2019.03.00101","DOIUrl":"https://doi.org/10.15406/mseij.2019.03.00101","url":null,"abstract":"Thousands of victims of medical errors exist in the clinical realm.1,2 Scientific work on archaeological ceramics based on the examination of ware shape, style, color, decoration and overall fabric, provide a wealth of information concerning typological and functional issues, chronology and provenance.1 In this context, ceramic technology has been a universal reference in archaeological studies to study different societies of the past and even consider relations of cultural and commercial exchange between continents.1,2 Several instrumental analytical techniques are applied to the study of ancient ceramics that allows peering ever more deeply into the frequently unsolved mysteries of their origin, manufacture and lifecycle. This means that the geological and chemical techniques encourage new scientific dialogues with the purpose of addressing archaeological questions of great scientific impact, whose objective is to solve the cultural identity of the ethnic group that makes the ceramic vessels, the origin of the pottery and its possibility of commercial exchange, manufacturing processes and chains and their relationship of archaeological context, whether funerary, daily, economic or the symbolic character associated with power and achieved through commercial exchange, etc. These techniques include X-ray fluorescence spectroscopy,1 X-ray diffraction,3,4 scanning electron microscopy,5 infrared and Raman spectroscopy,6‒9 high-resolution X-ray microtomography10 or gas chromatography–mass spectroscopy.11 However, the selection of the suitable analysis method should be based on the type, form and amount of sample to be analyzed.9 Archaeological analysis of ceramic technology and its socio-economic, cultural and historical scope, contrasted with data from geosciences, in addition to its documentation value,12,13 allows qualifying archaeological inferences based on the understanding of the attributes of the raw materials used for the manufacture of ceramic artifacts14,15 and the technology involved in the manufacturing process,16,17 which may reveal significant information about the provenance of the raw materials with which the ceramic artifacts were manufactured.18 The presence or absence of certain mineral phases provides information regarding the firing conditions in terms of both temperature and atmosphere used during pottery production.19 The archaeological problem of northern South America, has a central point that is the ethnic identification of agro-pottery societies through the technical study of its pottery production, which passes through the movements of populations and the occupation of the territory of northeastern Colombia in pre-Hispanic eras. The aim of this work was investigate an ancient pottery from the La Candelaria archaeological site, Santa Helena del Opón, Santander (Colombia), with analytical techniques which currently are being routinely used, to assess the relationship between the composition of the different pastes into the p","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74576027","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}
Ana Maria Coulon Grisa, Marco Canale Sirena, A. Zini, L. R. Brancher, M. Zeni, M. F. Nunes
{"title":"Characterization of non-structural poly (vinyl) chloride, rock wool and medium density fiberboard waste composites","authors":"Ana Maria Coulon Grisa, Marco Canale Sirena, A. Zini, L. R. Brancher, M. Zeni, M. F. Nunes","doi":"10.15406/mseij.2019.03.00114","DOIUrl":"https://doi.org/10.15406/mseij.2019.03.00114","url":null,"abstract":"Taking into account sustainable development concept spread at the end of the 20th century, new composite materials are introduced in modern countries to promote wood and plastic waste.1 Thermal insulation plays an important role in contributing to the energy savings in the building by heat gains and losses through the building envelope.2 A study reported that effective building insulation alone will save over one hundred times the impacts of carbon foot print from material usage and disposal, irrespectively of the materials used.3 In all countries, regardless of their level of development, wood and Poly (vinyl) chloride (PVC), in civil construction, generate significant amounts of waste without an ecological destination.1 PVC represents a promising source of raw material for the development of composites, especially because of the large volume and low cost of this material.4 These composites have several advantages, including low cost, low density, low manufacturing energy, compared to other thermoplastic polymer composites. 5","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74879230","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}
{"title":"Effect of laser power and scanning speed on the microstructure and mechanical properties of SLM fabricated Inconel 718 specimens","authors":"Jinwu Kang","doi":"10.15406/mseij.2019.03.00094","DOIUrl":"https://doi.org/10.15406/mseij.2019.03.00094","url":null,"abstract":"Selective laser melting (SLM), one of the main additive manufacturing techniques for metal materials, owns a series advantages in the fabrication of complex components with high precision and short procedure.1–4 It is being widely used in aero plane, aerospace, medical equipments and automotive industries. Fabrication of nickel based super alloy Inconel 718 by SLM is one of the most active research areas in additive manufacturing. The researches focus on the investigation of effect of fabrication parameters on the pore defect, microstructure and mechanical properties. The scanning speed and input power of laser beam are two key factors for the quality of parts. Qiu et al.,5 found that the laser power was in a positive relationship with the fabrication capability of strut diameter while the laser scanning speed had the nonlinearly inverse effect. Wu et al.,6 concluded that reducing the scanning speed and increasing the laser power could effectively increase the amount of remelting and make dense parts. Deng et al.,7 found that the SL Med Inconel 718 specimen had fine cellular-dendrites and relatively weak texture. Vertically built samples showed lower tensile strength but higher ductility than horizontally built samples, which may be caused by their different levels of residual stress and numbers of dislocations. Mclouth et al.,8 found that the laser focal shift used in SLM can change the microstructural morphology by altering the laser’s interaction with the material. Strossner et al.,9 observed niobium micro segregation in the dendritic microstructure. Chlebus et al.,10 found the as-built specimens was characterized by columnar grains of supersaturated solid solution with internal micro segregation of Nb and Mo. In this paper, the effect of laser power and scanning speed on the pore defection, microstructure and mechanical properties of Inconel 718 samples were investigated.","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85666480","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}
P. Alonso, M. Forti, L. Kniznik, G. Rubiolo, D. N. Torres, P. Gargano
{"title":"Location preferences of fission products in high density U(Mo) dispersion fuel element","authors":"P. Alonso, M. Forti, L. Kniznik, G. Rubiolo, D. N. Torres, P. Gargano","doi":"10.15406/mseij.2019.03.00083","DOIUrl":"https://doi.org/10.15406/mseij.2019.03.00083","url":null,"abstract":"The development of fuels with low 235U enrichment has become valuable over the course of the last twenty years, being of special interest fuels with high density of U(Mo) dispersion in Al matrices. The aim is to replace high enriched fuel by low enriched one with relative U/Utot contents less than 0.2. Experimental evidence of U(Mo) under irradiation1–4 show the existence of an interaction layer (IL) between UMo and the Al matrix. The IL growth influences the mechanical integrity of the plates, generating a structural weakness. Swelling accumulation can ultimate lead to fuel plate failure. Characterization of the IL with different rates of fuel burn-up shows the presence of fission products (FP).5 In this way, Sr, Cs, Nd, La, Ce and Xe have been detected by electron probe microanalysis (EPMA), electron microscopy (SEM) and energy dispersive x-ray microanalysis (EDX).6 Other works have confirmed the nucleation and growth of fission gas bubbles (swelling) in the aluminum matrix.7,8 The FP accumulation has been observed by Huet et al.,2 in the IL and aluminum matrix interface. FP implantation in Al matrices has been measured by EPMA, and Nd content has been estimated through Xe presence in the precipitation and formation of bubbles2 for the swelling effect. From another point of view, the irradiation of fuel plates of UMo show that the formation of the IL depends on the fission rate, and the swelling, on the other hand, depends on the burn-up or the fission density.9 Similar concepts have been reported regarding the FP-induced swelling,10 and the acceleration of swelling due to the influence of recrystallized phases of UMo.11 In agreement with experimental researches focusing on the influence of the FP in the IL, in the present work the configurational energy has been calculated, based on the functional density theory (DFT), of the disordered phases bcc U(Mo), bcc U(Mo, FP), fcc U(Mo)Al3, fcc U(Mo,FP)Al3, fcc Al and fcc Al(FP). The selected FP are Nd, Ce, La and Pr. The code used is VASP.12,13 In order to simulate disordered solutions the Special Quasi Random Structures (SQRS)14,15 was employed.","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"15 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72631024","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}
Luis A Hernandez Garcia, M. C. Molina, Marianela Zoratti, E. Cardillo, S. Terny, M. Sola, M. Frechero
{"title":"Ion-polaron interaction in modified tellurite glasses","authors":"Luis A Hernandez Garcia, M. C. Molina, Marianela Zoratti, E. Cardillo, S. Terny, M. Sola, M. Frechero","doi":"10.15406/mseij.2019.03.00100","DOIUrl":"https://doi.org/10.15406/mseij.2019.03.00100","url":null,"abstract":"Glasses formed by a mix of oxides are interesting for many technological applications. Their physical properties change according to the constituent oxides. Every oxide creates a three-dimensional network built by corner connected oxygen polyhedral, with different coordination number. The oxides can be either glass formers or glass modifiers, granting the final product specific characteristics. Thus, it is of utmost importance which oxides to incorporate to the original mix. In this work, we analyze the polaron conductivity in the presence of large alkaline cation concentrations. We studied oxide glasses formed by TeO2 modified by the incorporation of transition metal oxides: V2O5, Cu2O, and MoO3. Additionally, such tellurite glasses contain Na2O or MgO. Holstein 1 proposed in 1959 for materials with low charge carrier mobility (<0.1cm/V.s) that an electron trapped in the lattice would not be able to move unless the lattice could move together with it. Such proposal gave birth to the polaron concept. The explanation is that the charge carrier (the electron) induces a dipole moment on its neighboring and both move together, i.e. the polaron. Therefore, polaron conductivity involves the displacement of polaron in a material. When the material is a glass the charge carrier and the distortion in its surrounding move through the glassy matrix. For that reason, in this work we study how the presence of alkaline and alkaline earth cations affects the polaron transportation in the tellurite glasses.","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74485326","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}
Pachurin German Vasilievich, Goncharova Diana Anatolyevna, Kuzmin Nikolay Alexandrovich, Filippov Alexey Alexandrovich
{"title":"To the question for use of aluminum alloys for car parts","authors":"Pachurin German Vasilievich, Goncharova Diana Anatolyevna, Kuzmin Nikolay Alexandrovich, Filippov Alexey Alexandrovich","doi":"10.15406/mseij.3.6","DOIUrl":"https://doi.org/10.15406/mseij.3.6","url":null,"abstract":"The idea of reducing the mass of cars through the use of lightweight materials is not new. Among them are aluminum alloys, which at a relatively affordable price are significantly lighter than steel alloys. A review of domestic and foreign literature data shows that in the world practice work is actively being carried out to expand the use of aluminum alloys in the automotive industry. This is due to the fact that an increase in their share in the design of the car allows you to:","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91546133","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}
{"title":"Material Science & Engineering International Journal on the way from a toddler to youth","authors":"Jinwu Kang","doi":"10.15406/mseij.2019.03.00102","DOIUrl":"https://doi.org/10.15406/mseij.2019.03.00102","url":null,"abstract":"a main topic in published issues. Huseynova2,3 reviewed the solutionprocessed electrical doping of organic semiconductors to improve their electrical properties and dopants for the doping of organic semiconductors by cationic species. Kaliyannan et al.,4 gave a full view of the effect of carbon based nanofillers on the properties of elastomers. Iwamoto et al.,5 investigated one kind of nonferrous magnetic alloys manganese-antimony (MnSb) alloy and found the Mn1.09Sb phase was tunable exclusively through its composition, which is a promising property for specific applications, and Mn2Sb phase formed at high temperatures. García et al.,6 analyzed the polaron conductivity due to the presence of transition metal oxides in tellurite glasses and found the existence of a not small perturbation given by mobile cations had a strong effect on the non-periodic potential added to the formation of ion-polaron neutral entity in the modified tellurite glassy matrices. Dorozinska et al.,7 increased the velocity of adhesive polymerization by the introduction of organosilicon acrylates with high dispersion as impurities in ultraviolet adhesives used in the manufacture of precision optical devices. Prátula et al.8 synthesized NiFe2O4 spinel – phosphate (Bi-Ba-Li) glass composite by solid-state reaction. New crystalline magnetic phases developed inside the glassy matrix through controlled heat treatment make the glass composite own excellent magnetic response. Biomaterials and their reaction with body tissue is a research interest as well. Cör 9 investigated the histological characteristics of periprosthetic tissue around metal on metal hip prostheses (MoM THR) and found extensive lymphocytic infiltration in the periprosthetic tissue around MoM THR is the predominant pattern. However, perivascular lymphoid aggregates are not exclusive characteristics.","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84746204","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}
{"title":"Materials & low carbon energy production","authors":"L. Gil","doi":"10.15406/MSEIJ.2019.03.00087","DOIUrl":"https://doi.org/10.15406/MSEIJ.2019.03.00087","url":null,"abstract":"sustainable processing. One good example of this is related to cork (see e,g, L. Gil, Solar energy and cork: A binomial of the future, Science & Technology of Materials, vol. 30, No. 2, 2018, pp. 80-86) . In this field several solar energy application possibilities in forestry and industrial processes are considered, and the use of different cork derived products in several solar energy technologies and applications is also assessed. So cork is a sector were solar energy may be used in various ways and cork material can be a component in various solar energy systems/devices. This type of analysis could also be carried out for several other materials production and renewable energy production systems. It would be interesting to have an approach like this, done by several experts in the several domains of materials and low carbon energy production technologies. Sustainability is now not only a key word but also a key concept in every issue of our life. So, in the materials field, the use of natural and sustainable materials is a must. Having in mind the relation between materials and low carbon energy production, a lot of R&D work has been carried out. Only as a way of example, in this field see e.g. R.C. Pullar, L. Gil, F.A.C. Oliveira, Biomimetic cork-based ecoceramics for hydrogen generation using concentrated solar energy, Science & Technology of Materials, vol. 28, No. 1, 2016, pp. 23-28. In this work, cork was chosen as template to produce novel ceria (CeO2) ecoceramics, for applications in water splitting for H2 production via direct concentrated solar thermo chemical fuel production (TCFP). Energy and materials are currently two of the main focuses of Science and Technology, in particular due to environmental and supply concerns. The search for cheaper and more efficient energy production obviously involves the development of new and innovative materials. So, energy and materials are nowadays driving science and technology. The time when only a few materials such as steel, copper and concrete were the main components of energy technologies has long gone. In addition to new classes of materials, there is also a need to improve the physical and chemical characteristics of existing materials to improve the competitiveness of industrial materials production and to reduce their environmental footprint through better use of energy.","PeriodicalId":18241,"journal":{"name":"Material Science & Engineering International Journal","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84214112","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}