表面工程材料与先进技术期刊(英文)最新文献

{"title":"Musa Paradaisica and <i>Vitis vinifera</i> Functionalised Ag-NPs: Electrochemical and Optical Detection of <i>Escherichia coli</i> in Seawater","authors":"Sphamandla Nqunqa, Takalani Muluadzi, N. Njomo, Usisipho Feleni, R. F. Ajayi","doi":"10.4236/jsemat.2022.123004","DOIUrl":"https://doi.org/10.4236/jsemat.2022.123004","url":null,"abstract":"","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70454747","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":"Analytical Study of Precision Optical Glass Surface and Its Effect on Some Polarimetric Parameters","authors":"N. Mahmoud","doi":"10.4236/jsemat.2022.121002","DOIUrl":"https://doi.org/10.4236/jsemat.2022.121002","url":null,"abstract":"The performance of many optical glass elements depends on the structure of the surface. The high refractive index of flint glass is advantageous in constructing some optical elements (lenses, prisms, beam splitters, ...). Also, high achromaticity and size reduction in oblique incidence TIR (total internal reflection) phase retarders require high-index glass. The present work is interested in studying the optical properties of the thin surface layer formed on TIR rhomb retarder at different wavelengths to indicate the extent to which this surface layer affects the performance of this TIR rhomb retarder and show how to overcome this effect.","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70455040","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":"<i>Malus domestica</i> and <i>Solanum lycopersicum</i> Mixtures for the Synthesis of Graphene Silver and Zinc Oxide Nanocomposites","authors":"R. F. Ajayi, Siphokazi Tshoko, Candice Franke, N. Ngema, Veli Thipe, T. Mulaudzi","doi":"10.4236/jsemat.2022.124005","DOIUrl":"https://doi.org/10.4236/jsemat.2022.124005","url":null,"abstract":"","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70454826","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":"Numerical Comparative Study on the Effective Replacement Thickness of Traditional Stone Coarse Aggregate or Steel-Slag Aggregate Mixtures in Improved Soft Fine Soils","authors":"N. Ali","doi":"10.4236/jsemat.2022.122003","DOIUrl":"https://doi.org/10.4236/jsemat.2022.122003","url":null,"abstract":"This study uses Steel Slag Coarse Aggregate (SSCA) as a mixture replacement, preamble material to improve soft soils, which is economic, and has good effect environment. Recently, the development and utilization of by-product, waste and recycle materials must be studied and investigated as a source of improved material for soft soils as, an economic and good effect environ-mental. The study analyzes effects of both replaced mixtures, (SSCA) or (TSCA) on improved soil bearing capacity and expected settlement after ve-rifying the model. Numerical modeling of the one of real store loaded strip using, PLAXIS, 2D, strain deformation behavior to achieve field visible and measured deformations of untreated soft soil. Numerical studies were devolved to investigate geomechanics parameters improved to compare between using (SSCA) or (TSCA) as, replacement mixture. Results demonstrate that using (SSCA) improved compressibility and strength of shallow soft soil layer signifi-cantly than using (TCSA) mixture, while (SSCA) improved strip footing ultimate bearing capacity, (UBC), by 84.4% compared with increase of 20.5% when using (TCSA) mixture at the same thickness. In addition, the study highlights the effective (SSCA) replacement thickness ranges between (0.65 ~ 0.80) footing width.","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70455096","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":"Fabrication of Aluminum/Single-Walled Carbon Nanotube Oxidation Films through CNT-Added Surface Treatment","authors":"Sangjae Kim, Emi Matsuyama, H. Tajima, Rikuma Miyake, T. Maruyama","doi":"10.4236/jsemat.2021.112002","DOIUrl":"https://doi.org/10.4236/jsemat.2021.112002","url":null,"abstract":"","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70454993","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":"Physical Alloying of Plasma Metallization Carbide Nanocomposite Coating by Allotropic Carbon Nanostructures","authors":"P. Vysikaylo, V. Mitin, A. Yakushkin","doi":"10.4236/JSEMAT.2021.111001","DOIUrl":"https://doi.org/10.4236/JSEMAT.2021.111001","url":null,"abstract":"The fundamental scientific problem for micro- and nano-electronics has been solved—methods for creating and investigating properties of physically doped materials with spatially inhomogeneous structure at the micro- and nano-meter scale have been developed. For the application of functional nanocomposite film coatings based on carbides of various transition metals structured by nanocarbon, for the first time in the world, we developed a new technique for their plasma deposition on a substrate without the use of reaction gases (hydrocarbons such as propane, acetylene, etc.). We have created nanostructured film materials, including those with increased strength and wear resistance, heterogeneous at the nanoscale, physically doped with nanostructures—quantum traps for free electrons. We learned how to simultaneously spray (in a plasma of a stationary magnetron discharge) carbides and graphite from a special mosaic target (carbide + carbon) made mechanically. As a result of such stationary sputtering of carbides and carbon, plasma nanostructured coatings were obtained from nanocarbides, metal nanocrystals and nanocarbon. Our design of such a target made it possible to intensively cool it in the magnetron body and spray its parts (carbide + carbon) simultaneously with a high power density of a constant plasma discharge—in the range of values from 40 W/cm2 to 125 W/cm2. Such sputtering with a change in the power or the initial relative surface areas of various parts of the mosaic target (carbon and carbide) made it possible to change the average density of carbide, metal and carbon in a nanostructured (nanocarbon and metal nanostructures) coating. The changed relative density of various components of the nanocomposite (nanostructures of carbide, metal, and carbon in the form of graphite) significantly affected the physical properties of the nanocomposite coating. The creating method of multiphase nanostructured composite coatings (based on carbides of transition metals) with high hardness of 30 GPa, a low coefficient of friction to dry 0.13 - 0.16, with high heat resistance up to 3000°C and thermal stability in the nanocrystalline state over 1200°C is developed. It is established that the presence of nanographite in the composite significantly improves the impact strength and extends the range of possible applications, compared with pure carbides. The solution to this problem will allow creating new nanostructured materials, investigating their various physical parameters with high accuracy, designing, manufacturing and operating devices with new technical and functional capabilities, including for the nuclear industry and rocket science.","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":"11 1","pages":"1-13"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70454923","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":"Synthesis of Tenoltrifluoroacetone Composite Doped with Terbium, Dysprosium and Europium Encapsulated in Silica Oxide Matrix","authors":"Yazmin Francisco, D. Medina, M. Barrón, Joan Reyes, P. Martinez, A. D. Morales, E. Garfias","doi":"10.4236/jsemat.2020.104005","DOIUrl":"https://doi.org/10.4236/jsemat.2020.104005","url":null,"abstract":"The synthesis of the thenoyltrifluoroacetone compound doped with terbium, dysprosium and europium encapsulated in a silica matrix (TTA:Tb:Dy:Eu@SiO2) were performed by the sol-gel method. The precursors to obtain the vitreous phase (SiO2) were: Tetraethylorthosilicate (TEOS, C8H2O4Si, 98%, Aldrich), and ethyl alcohol (CH3CH2OH, 99.5%, Meyer), distilled water and 0.05 ml of hydrochloric acid (HCl, Meyer). The sample with molar ratio 20:80 TTA:Tb:Dy:Eu@SiO2 has the best emission intensity. Thermogravimetric analysis (TGA) shown that silica encapsulated samples decompose at lower temperatures than pure TTA:Tb:Dy:Eu luminescent material. Fourier Transform Infrared (IR-TF) shown the characteristic Si-O-Si bands that are presented at a wavelength of 1049, 853 and 440 cmǃ confirming that the luminescent material is encapsulated in a silica matrix, finally X-ray diffraction (XRD) shown that TTA:Tb:Dy:Eu@SiO2 composite is amorphous.","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42363247","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":"Identifying Optimal Cutting Parameters in Drilling of Titanium Aluminum Vanadium Using Finite Element Analysis","authors":"M. M. Reddy, S. Kostka, N. Reddy","doi":"10.4236/jsemat.2020.103004","DOIUrl":"https://doi.org/10.4236/jsemat.2020.103004","url":null,"abstract":"Titanium alloys are widely used in the aerospace industries because of their excellent strength-to-weight ratio, high resistance to corrosion, high chemical reactivity and low thermal conductivity and ability to withstand high temperatures. However, these properties make titanium alloys difficult to machine. Drilling of titanium alloy may generate high temperature and high cutting forces. This paper is aimed at determining the suitable cutting parameters in the drilling of titanium alloys to minimize the cutting temperature and cutting forces. A finite element 3D model of the drilling process is simulated in this research. A combination of drilling speeds and feed rates are simulated to obtain the resulting responses of cutting force and temperature. The central composite design (CCD) is used to generate different combinations of cutting parameters to reduce the number of experiments and optimize the temperature and cutting force responses. Results show at the drilling speed of 5000 rpm with a feed rate of 0.1 mm/rev, temperature and cutting force significantly reduced.","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44127100","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":"Influence of Laser-Induced Bubble Formation on Laser Chemical Machining","authors":"M. Simons, T. Radel, Raj Shanta Kajsaravally, F. Vollertsen","doi":"10.4236/jsemat.2020.102002","DOIUrl":"https://doi.org/10.4236/jsemat.2020.102002","url":null,"abstract":"Laser Chemical Machining (LCM) is a non-conventional processing method, which enables very accurate and precise ablation of metallic surfaces. Material ablation results from laser-induced thermal activation of heterogeneous chemical reactions between electrolytes and a metallic surface. However, when processing metallic surfaces with LCM, large fluctuations in ablation quality can occur due to rising bubbles. The for-mation of bubbles during laser chemical machining and their influence on the ablation quality has not been investigated. For a more detailed investigation of the bubbles, ablation experiments on Titanium and Ce-ramic under different thermal process conditions were performed. The experiments were recorded by a high-speed camera. The evaluation of the video sequences was performed using Matlab. The resulting bubbles were analyzed regarding their size and frequency. The results show that boil-ing bubbles formed on both materials during processing. Titanium also produces smaller bubbles, which can be identified as process bubbles ac-cording to their size. Furthermore, it was found that undisturbed laser chemical ablation can be achieved in the presence of a boiling process, since both boiling bubbles and process bubbles were detected during machining within the process window.","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48017001","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":"Metallated Schiff-Base Macromolecules as Alternative Metalloprotein Electron Transfer Intermediates","authors":"A. C. Farao, R. F. Ajayi, Meryck Ward, P. Baker","doi":"10.4236/jsemat.2020.102003","DOIUrl":"https://doi.org/10.4236/jsemat.2020.102003","url":null,"abstract":"In the construction of biosensors, enzymes function as mediators \u0000converting biological signals generated by \u0000specific biological processes, into electrochemical signals. The ideology of \u0000bio-sensor design is retention of electron transfer activity of the enzyme \u0000utilizing superior interfacial architecture. In this work a Schiff-base \u0000macromolecule has been synthesized by reflux of 2, 3-diaminonaphthalene and \u0000pyrrole-2-carboxaldehyde starting materials. The Schiff-base ligand was \u0000subsequently complexed with FeCl2?4H2O under reflux, \u0000to produce the Fe-Schiff-base complex. The Schiff-base ligand and \u0000Fe-Schiff-base complex were characterized using nuclear magnetic resonance \u0000(NMR) spectroscopy, Ultra Violet/Visible (UV/Vis) spectroscopy, Fourier \u0000transfer infrared resonance (FTIR) and \u0000electron energy loss spectroscopy (EELS) to confirm the structure of the \u0000synthesis products. NMR spectroscopy confirmed the imide linkage of Schiff-base \u0000formation as two symmetrical peaks at 8.1 and 7.7 ppm respectively. Comparison \u0000of starting materials and product spectra by UV/Vis spectroscopy confirmed the \u0000disappearance of the diaminonaphthalene peak at 250 nm as evidence of complete \u0000conversion to product. FTIR spectroscopy of the Schiff-base ligand \u0000confirmed the formation of the imine bond at 1595 cm-1. EELS spectra \u0000comparing FeCl2?4H2O and the Fe-Schiff-base complex, \u0000showed good agreement in the energy loss profiles associated with changes to \u0000the electronic arrangement of Fe d-orbitals. EDS clearly identified a spectral \u0000band for Fe (7 - 8 eV) in the Fe-Schiff-base complex. Electrochemical \u0000evaluation of the Fe-Schiff-base complex was compared to the electrochemical \u0000signature of denatured cytochrome-C using cyclic voltammetry and square wave \u0000voltammetry. The Fe2+/Fe3+ quasi-reversible behavior for \u0000iron in the metallated complex was observed at -0.430 V vs. Ag/AgCl, which is consistent with reference values \u0000for iron in macromolecular structures.","PeriodicalId":70309,"journal":{"name":"表面工程材料与先进技术期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49007432","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}