SOJ Materials Science & Engineering最新文献

{"title":"Next-Generation Self-Assembled Anisotropic Conductive Adhesive Developed Using Solder Powder for Electrical Micro-Bonding in the Emerging IT Industry","authors":"Kyung-In Kim, Kyung-hee Lee","doi":"10.15226/sojmse.2020.00164","DOIUrl":"https://doi.org/10.15226/sojmse.2020.00164","url":null,"abstract":"The importance of the IT industry is becoming more and more prominent as it gradually changes to a non-face-to-face society after the COVID-19, and the next-generation smart devices of 5G mobile communication, micro LEDs, and wearable devices are emerging as the leading of the IT industry. Along with the development of these devices, limitations and problems of the Anisotropic Conductive Adhesive Film (ACF) used as a connection material for Film on Film (FOF), Chip on Glass (COG), Chip on Film (COF), and Film on Glass (FOG) are emerging. [1-5]","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"276 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122093899","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":"Fast and Energy Efficient Curing of Composites –Fenecom Project","authors":"F. Goethals, P. Paelinck, M. Vanneste, R. Lungwitz","doi":"10.15226/sojmse.2020.00163","DOIUrl":"https://doi.org/10.15226/sojmse.2020.00163","url":null,"abstract":"This contribution presents alternative methods to cure thermoset composites in a more energy-efficient way. Therefore, three low energy demanding and fast curing sources which are UV, electron beam and infrared are selected as curing technology. For the UV and electron beam curing, special matrix formulations are developed, and these are combined with glass and carbon fibre reinforcements. For infrared curing, conventional thermoset epoxies are used and the curing parameters are optimized to prepare carbon and basalt composites. Finally, the flexural modulus and strength (3-point bending method), and glass transition temperatures (DSC) of the obtained composites samples are determined.","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123362728","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":"Application of Mycelium-Bound Composite Materials in Construction Industry: A Short Review","authors":"A. Javadian, H. Le Ferrand, Dirk E. Hebel, N. Saeidi","doi":"10.15226/sojmse.2020.00162","DOIUrl":"https://doi.org/10.15226/sojmse.2020.00162","url":null,"abstract":"Mycelium-bound composite materials are a new class of sustainable and affordable biocomposites that have been recently introduced into packaging, fashion, and architecture as alternative to traditional synthetic materials. In recent years extensive investigation and research studies have been dedicated to explore methods of production and processing as well as to find potential applications for mycelium-bound composite materials. However, application of this novel biocomposite within the construction industry has been limited to only small-scale prototypes and exhibition installations. The problems with low mechanical properties, high water absorption and lack of standard methods for production and testing of mycelium-bound composite materials remain as main challenges that need to be addressed when used as non-structural or semi-structural elements. This short review aims to display the potential of mycelium-bound composite materials for their use within the construction sector in the form of thermal and acoustic insulation as well as replacement for drywalls and tiles. This review summarizes the main available information with regards to the properties of mycelium-bound composites that have been used in construction sector while suggesting the direction for the future research and development on these biocomposites for their applications within the construction industry.","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134555014","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":"Adsorption of Organosilanes and Formation of Organo silicon Self-Assembled Nanolayerson the Aluminum Surface.Influence of Surface Nanolayerson Corrosion and Electrochemical Behavior of the Metal","authors":"M. Petrunin, T. Yurasova, L. Maksaeva","doi":"10.15226/sojmse.2019.00160","DOIUrl":"https://doi.org/10.15226/sojmse.2019.00160","url":null,"abstract":"Adsorption of vinyl triethoxysilane and γ-aminopropyltriethoxysilane on the surface of aluminiumfrom aqueous solutions was studied by quartz nanobalance technique. Adsorption isotherms were obtained. It was shown that during adsorption silanes displace adsorbed water from the surface. To interpret the adsorption data, we used the well-known approaches of adsorption data: Langmuir, BET, Flory-Higgins, Langmuir multicenter,Temkin,Frumkinand Freundlichadsorption isotherms. The surface orientation of adsorbed molecules was determined. The silanes adsorption heats were calculated by different ways. It was shown that silanes are chemisorbed on the aluminium surface. By means of quartz nanobalance, atomic force microscopy, scanning electron microscope, Fourier transform IR spectroscopy it has been shown that an uniform, selfassembled, anti-corrosionvinylsiloxanenanolayer is formed on the aluminium surface during adsorption of vinyl silane from aqueous solution. This layer covalently bonded to the hydroxylsurface groups of the metal. The thickness of the surface nanolayer can be controlled by changing the deposition conditions. The effect of the vinylsiloxanenanolayer on the dissolution of aluminium in chloride-containing solutions has been studied. It was established that an ordered vinylsiloxanenanolayer, up to five molecular layers thickness, effectively inhibits the uniform and localized aluminium corrosion. It was shown that after 10 days of corrosion tests vinylsiloxanenanolayer is preserved on the aluminium surface, indicating its resistance to water and corrosive components.vinylsiloxane Keywords: Aluminium; Adsorption; Alkoxysilane;Organosilicon Self-Assembled Nanolayers; Heterogeneous Processes; Corrosion; Electrode Reactions; Corrosion Test","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131904609","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":"Preliminary Studies on Making Antibacterial Latex-Chitosan Film Composite","authors":"S. Habibie, M. Hamzah, H. Susanto, Muslim E Harahap","doi":"10.15226/sojmse.2019.00161","DOIUrl":"https://doi.org/10.15226/sojmse.2019.00161","url":null,"abstract":"Research on the application of chitosan as an edible film and coating has been developed. However, its hydrophilic nature causes edible films and coatings to be sensitive to air humidity so that they have a low moisture barrier. In addition, chitosan also has low thermal stability. This research combines natural rubber which is hydrophobic with relatively high thermal stability with chitosan which is antibacterial. The composite film between latex and chitosan was made by using the pour solution method. The occurrence of composites between latex and chitosan was proven from the results of FTIR and SEM characterization. The results of TGA characterization showed that the latex film (sample L1) had the highest thermal stability and the latex-chitosan composite (sample L1C3) had the lowest thermal stability. In the antibacterial test, it was concluded that the latex-chitosan film composite did not have bacteriocidal properties which was thought to be caused by the amine group in chitosan which could not diffuse on the media because it had formed a composite with latex. Based on the results of characterization and tests that have been carried out, it is concluded that the latex-chitosan composite film has thermal stability, optimal morphology in oxygen exchange with carbon dioxide, and has unmissable bacteriostatic properties. bacteria, liquid droplets, and moisturizers are samples of the L1C1 formula which is a sample with a 1% chitosan content. Keywords: Latex; Chitosan; Chitosan Latex Composite Film; Solution Casting; Thermal Stability; Antibacterial","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132054385","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":"Viability of Magnesium Based Composites as Temporary Implan","authors":"Somasundaram Prasadh, R. Wong, M. Gupta","doi":"10.15226/sojmse.2019.00159","DOIUrl":"https://doi.org/10.15226/sojmse.2019.00159","url":null,"abstract":"Magnesium and its alloys are researched widely for their use in biodegradable temporary implant applications. However, higher rate of degradation and hydrogen gas evolution limits the use of magnesium-based materials as temporary implants. Till date, various modifications like addition of alloying elements, processing conditions, surface modification and coatings are done to overcome these drawbacks. Another way to circumvent these limitations is to add reinforcement to magnesium and its alloys. Magnesium-based composites, as biomaterials, can exhibit excellent mechanical and microstructural properties like ultimate tensile strength, ultimate compressive strength, elastic modulus, grain refinement and corrosion resistance in the physiological conditions. Accordingly, this paper targets to investigate the influence of addition of different types of reinforcements to magnesium and it alloys on their microstructural, mechanical and corrosion responses. Keywords: Magnesium; Metal matrix composites; Corrosion; Biomaterial; Temporary Implants","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126506067","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":"FusionWelding of High-Strength Low-Alloy Steel: A Mini- Review","authors":"Le Zai, X. Tong","doi":"10.15226/sojmse.2019.00157","DOIUrl":"https://doi.org/10.15226/sojmse.2019.00157","url":null,"abstract":"High-Strength Low-Alloy (HSLA) steel exhibits excellent tensile strength and ductility, and it also possesses good welding performance due to its low carbon equivalent. However, welding defects always inevitably appear during the fusion weldingof HSLA steel. In this paper, the previous investigations on the microstructure of the joined HSLA steel by different fusion welding processes arereviewed, and the mechanical properties of the fabricated joint are analyzed. Also, the practicability of different fusion welding processes on HSLA steel has been systematically analyzed. Finally, the prospect of the welding of HSLA steel is expected according to the research status. Keywords: High-Strength Low-Alloy Steel; Fusion Welding; Welding Defect; Microstructure; Mechanical Properties","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128411132","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":"Spectrophotometric Evaluation of Urethane Acrylate Based Pigment Colour Stability","authors":"Grigale-Sorocina Z, P. R, B. I","doi":"10.15226/sojmse.2018.00155","DOIUrl":"https://doi.org/10.15226/sojmse.2018.00155","url":null,"abstract":"The aim of the paper is to analyse the influence of violet and green pigment concentration on acrylate coating colour stability with increased temperature and in UV light. A set of coating formulations were generated with different pigment mass concentrations (0, 1% to 5%) and coating colour change were evaluated at room temperature, at 50°C and in direct sunlight over a 28 day period. After application and UV cure, the samples were examined using spectrometric methods. Spectrometric colour difference measurements were performed using colour system CIEL*a*b* to evaluate their stability over time. It was found that increasing pigment concentration improves the colour stability.","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127499571","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":"Corrosion Protection of Epoxy-Coated Stainless Steel by Organic-Coating and Filler Materials","authors":"R. Singh, Sabana Latiff, Manjay Kumar Thakur","doi":"10.15226/sojmse.2018.00154","DOIUrl":"https://doi.org/10.15226/sojmse.2018.00154","url":null,"abstract":"Epoxy coating uses for the corrosion protection of stainless steel. Epoxy-coated stainless steel surface has possessed lots of porosities so pollutants and particulates materials are entered inside by osmosis and diffusion process. Pollutants like oxides of carbon, oxides of nitrogen, and oxides of sulphur form acids and they make hostile environment for base metal and epoxy polymer. These acids develop chemical reaction with epoxy-coated stainless steel. They develop corrosion cell with metal and start corrosion reaction. They can produce several forms corrosion like galvanic, pitting, stress, crevice, blistering and embrittlement. Epoxy polymer is shown swelling corrosion. Such types of pollutants are disintegrated metal and polymer and change their physical, chemical and mechanical properties. Weather changes can affect the corrosion rate of materials because the compositions of corrosive substances increase or decrease temperatures of atmosphere, concentration of pollutants, moisture, humidity and acids. They initiate the corrosion of materials. The corrosion protection of epoxy-coated stainless steel was controlled by the application of synthesized decahydrobenzo [8] annulene-5, 10-disemicarbazone and this compound was nanocoated on the surface of epoxy-coated stainless steel. Nanocoating and filler materials were formed composite a thin barrier on the surface of epoxy-coated stainless steel and studied their action in corrosion in hostile environment. Nanocoating work can be completed by the use of nozzle spray and chemical vapor deposition. Thermal parameters like activation energy, heat of adsorption, free energy, enthalpy and entropy were used to study composite film formation. The corrosion rates of materials were calculated by gravimetric method. Surface coverage areas and coating efficiencies were obtained by the help of corrosion rate. Potentiostat used to determine corrosion potential, corrosion current and current density. Experimental observations indicated that composite film barrier was formed decahydrobenzo [8] annulene-5, 10-disemicarbazone and Tin which physical, chemical and mechanical properties did not change easily in ambient environment. Keywords: Hostile environment; corrosion; nanocoating; filler; thermal parameters; composite film barrier;","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132295039","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":"Preparation of Sr-Doped Lafeo3 by Thermal Decomposition of Metal Organic Complex and their Gas-Sensing Properties","authors":"Nattamon Koonsaeng, Thammanoon Thaweechai, A. Wisitsoraat, W. Wattanathana, S. Wannapaiboon, S. Chotiwan, C. Veranitisagul, A. Laobuthee","doi":"10.15226/sojmse.2018.00153","DOIUrl":"https://doi.org/10.15226/sojmse.2018.00153","url":null,"abstract":"Sr-doped LaFeO3 powders, named herein as La1-xSrxFeO3 (x represents the Sr-doping molar ratio with respect to La used at the starting point of the synthesis), were prepared by thermal decomposition of metal organic complexes. The obtained products show the characteristic orthorhombic structure of La1-xSrxFeO3 perovskite with grain sizes of ~2-5 μm. SEM imagesindicate that the growth of the grain is restrained with the increasing concentration of Sr (II) dopant and leads to the small particle size. The specific surface area of 8-12 m2/g was observed, and the variation of specific surface area is related to the different particle size. The sensitivity of La1- xSrxFeO3 films was tested for ethanol, acetone, methane and hydrogen at different concentrations and temperatures. The films were found to be selective and applicable for detecting ethanol gas. The highest response to 1000 ppm ethanol is ~31.8 at 350°C for the La0.5Sr0.5FeO3. Keywords: LaFeO3; Ethanol sensing, gas sensor; Metal-organic complex; La1-xSrxFeO3 thick film;","PeriodicalId":342686,"journal":{"name":"SOJ Materials Science & Engineering","volume":" 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113952428","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}