Zeitschriftenartikel: „Sol-Gel Dip-Coating“

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Jeffrey Brinker, C., und Alan J. Hurd. „Fundamentals of sol-gel dip-coating“. Journal de Physique III 4, Nr. 7 (Juli 1994): 1231–42. http://dx.doi.org/10.1051/jp3:1994198.

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Brinker, C. J., G. C. Frye, A. J. Hurd und C. S. Ashley. „Fundamentals of sol-gel dip coating“. Thin Solid Films 201, Nr. 1 (Juni 1991): 97–108. http://dx.doi.org/10.1016/0040-6090(91)90158-t.

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3

Liu, Hui Cong, Liqun Zhu und Yan Bin Du. „Modification of Electroless Nickel-Plating Coatings with Sol-Gel Film“. Materials Science Forum 475-479 (Januar 2005): 3835–38. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.3835.

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Four Sol-Gel films were developed by dip-coating electroless nickel-plated samples in different Sols, followed by heat treatment. The effects of the coating times and heat treatment temperature on the corrosion, oxidation resistance and wearing quality of the modified coating were examined. Results show that, after six coating, Sol-Gel films obtained can provide good corrosion and oxidation resistance, and their anti-corrosion quality remains high even after being oxidized at 500 °C for 60 hours. Addition of inorganic molybdenum salt or chromate into the Ti Sol also makes the wearing quality of the Sol-Gel film better.

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Vishvakarma, Shubham, Rajesh Kannan, Nitesh Vashishtha und Arendra Pal Singh. „Evaluation of hybrid sol-gel alumina coating for electrical resistance applications“. Surface Topography: Metrology and Properties 9, Nr. 4 (25.11.2021): 045030. http://dx.doi.org/10.1088/2051-672x/ac3a9b.

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Abstract In an electric motor, bearing plays a vital role in the performance and reliability which fails frequently due to electrical pitting. To avoid this issue, the bearing can be coated with insulation material. In this present investigation, hybrid sol-gel coating was carried out on bearing steel by dip-coating method. The hybrid sol-gel was prepared using aluminium isopropoxide and calcined alumina powder. The ratio of Sol-Gel to calcined alumina and thickness of the coating was optimized to attain a crack-free surface coating. The crack behaviour was studied. The characterization of Hybrid Sol-Gel was carried out using Fourier-transform infrared spectroscopy and the surface morphology was observed using an optical microscope. The electrical resistance of the coating was measured using an insulation resistance tester. The crack-free surface coating of 40 microns was achieved at a low sol-gel to calcined alumina ratio. The electrical resistance of the coating is found suitable for bearing application. The thermodynamically stable hybrid sol-gel i.e., α alumina -ϒ alumina coating surface is proposed for electrical insulation coating.

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Innocenzi, P. C., M. Guglielmi, M. Gobbin und P. Colombo. „Coating of metals by the sol-gel dip-coating method“. Journal of the European Ceramic Society 10, Nr. 6 (Januar 1992): 431–36. http://dx.doi.org/10.1016/0955-2219(92)90018-9.

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Gu, Peng, Xinghua Zhu und Dingyu Yang. „Structural, optical and photoelectric properties of Mn-doped ZnO films used for ultraviolet detectors“. RSC Advances 9, Nr. 14 (2019): 8039–47. http://dx.doi.org/10.1039/c9ra01099h.

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Cha, Young Chul, Chul Eui Kim, Seung Hun Lee, Hae Jin Hwang, Ji Woong Moon, In Sub Han und Sang Kuk Woo. „Synthesis of Silica Aerogel Thin Film from Waterglass“. Solid State Phenomena 124-126 (Juni 2007): 671–74. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.671.

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Hydrophobic thin film silica aerogels were synthesized by ambient pressure drying method from silicic acid which was prepared from sodium silicate (water glass) solution. The pH value of the silica precursor sol was adjusted to make a spinable sol, and gel films were coated on a glass substrate by dip coating technique. Aerogel-like thin films with the thickness of about 1 μm could be successfully fabricated by repeating the dip coating process three times.

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Caruso, Ricardo, Antonio Di´az-Parralejo, Pedro Miranda und Fernando Guiberteau. „Controlled preparation and characterization of multilayer sol-gel zirconia dip-coatings“. Journal of Materials Research 16, Nr. 8 (August 2001): 2391–98. http://dx.doi.org/10.1557/jmr.2001.0328.

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We describe a method for controlled preparation of sol-gel ceramic multilayer coatings obtained by dip-coating. The proposed fabrication routine guarantees obtaining crack-free multilayer coatings with control of the thickness and porosity of individual layers. The procedure is applied to obtain a 10-layer ZrO2–3 mol% Y2O3 coating deposited on AISI 310 stainless steel. The microstructure of this coating was investigated by using x-ray powder diffractometry and atomic force microscopy, and special consideration was given to the mechanical characterization of this thin film using ultramicrohardness indentation tests. Our results suggest that these zirconia coatings have good properties for use as protection barriers. Implications concerning general tailoring design of sol-gel dip-coatings are also considered.

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Jamarun, Novesar, Lia Anggresani und Syukri Arief. „DIP-COATING SENYAWA KALSIUM FOSFAT DARI BATU KAPUR BUKIT TUI MELALUI METODE SOL-GEL“. Jurnal Riset Kimia 5, Nr. 1 (12.02.2015): 46. http://dx.doi.org/10.25077/jrk.v5i1.179.

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ABSTRACT Preparation of Dip-Coating Calcium Phosphate via sol-gel method using natural limestone Bukit Tui as calcium precursors and diammonium hydrogen phosphate as phosphorus precursors with sol-gel process has been investigated. Ethanol was used as solvent and DEA (diethanolamine) was used stabilizing agent. The powder were prepared by calcinated the sol at 950 oC. The products were characterized by Fourier Transform Infra Red, X-Ray Diffraction and Scanning Electron Microscopy. FTIR results showed that the vibration form was PO43-, P2O74-, O-H and CO2. XRD patterns of powder with various Ca/P mol ratio showed that the product of calcium phosphate was Ca2P2O7 and also found the hydroxyapatite Ca10(PO4)6(OH)2 in Ca/P mol ratio 1,7. SEM images of powder calcium phosphate revealed that their morphology were spheric and homogen. The coating process was done at glass substrate with coating speed 20 cm/min by calcinations at 400 oC. XRD patterns of thin layer showed that the product was Ca2P2O7 and SEM images of thin layer revealed that their morphology were bulk. Keywords: Natural limestone, calcium phosphate, hydroxyapatite, sol-gel, dip-coating

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Yu, Xin Gang, Yanbin Zuo, Hong Wen Ma, Hui Feng Zhao, Wu Wen Luo, Wenrue Bi und Wang Li. „Study on the Macro-Residual Stress of 304 Stainless Steel Coated with TiO₂-SiO₂ Thin Films by Sol-Gel Process“. Key Engineering Materials 280-283 (Februar 2007): 815–18. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.815.

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X-ray diffraction (XRD) method to measure the residual stress in the metal substrate surface layer and the medial oxide layer between thin film and metal substrate was introduced and the sol-gel TiO2-SiO2 thin film was successfully prepared on SUS304 stainless steel substrate by dip-coating process. The macro residual stress existing in metal substrate was analyzed by XRD. It turns out that the compressive stress existing in the metal substrate surface layer decreases with the raising of heat-treated temperature and that the compressive stress of metal substrate surface layer and the tensile stress of the medial oxide layer increase with the increase of the withdrawal speeds of the sol-gel dip-coating. Based on the above study, colored stainless steels of high quality were prepared by sol-gel process for the first time.

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H G, Rajath, und Dr H. V. Byregowda. „Advantages of Spin Coating Over Other Coating Techniques in the Formation of Superhydrophobic Surfaces“. International Journal of Engineering and Advanced Technology 12, Nr. 2 (30.12.2022): 22–33. http://dx.doi.org/10.35940/ijeat.b38921212222.

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In this contemporary world, coating plays a vital role to improve the mechanical property of the material, complete chemistry and structure of the material need not be altered instead surface modification is more than enough to reduce the degradation of material through corrosion accumulation of the dust on the surface and the contact angle between the water and the surface is the major focus. the current article, current work gives the collective result of different types of coating like dip coating, sol-gel, spray coating, spin coating, plasma coating, chemical vapor deposition, and lithography in comparing all the methods of coating with spin coating it can convert the surface into a superhydrophobic surface with more contact angle of 165° with the coating microns of 10 to 30 micron, and dip-coating having a contact angle 160° with coating 3 microns, the sol-gel coating having contact angle 115°-165° with coating 20 microns, spray coating having contact angle 164° with coating 7 microns, plasma coating having contact angle 144° with coating 25 microns, chemical vapor deposition having contact angle 159.3°with 20 microns, lithography coating has a contact angle of 160° with coating 33 microns, whereas other coating techniques like dip, spray, plasma coating, chemical vapor deposition, and lithography have constraints with contact angle respectively.

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Okuyucu, Hasan, Paul Inge Dahl und Mari Ann Einarsrud. „Coating of LaCoO3 Thin Film with Sol–Gel Dip Coating Method“. Journal of Nanoscience and Nanotechnology 8, Nr. 2 (01.02.2008): 685–88. http://dx.doi.org/10.1166/jnn.2008.a052.

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LaCoO3 thin film was coated on Al2O3 single crystal by sol–gel route. Appropriate composition of precursors, chelating agents and the solvent put together into a flask and magnetically stirred on a magnetic stirrer. After having the red transparent solution, it was stirred for 12 hours before coating. Ultrasonically cleaned substrate is dipped into the solution and taken immediately into vertical furnace which is preheated at 550 °C. A dense amorphous film is coated on the substrate. Fired amorphous films are annealed at temperature between 900 °C and 1000 °C for 20 minutes in the air. Then coated film was characterized by means of XRD, AFM, and SEM. Conductivity of the film was measured to be −0.1819 for 881 °C for the log σ value by assuming the thickness as 1 μm.

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Cheng, Kui, Wen Jian Weng, Shun Dong Miao, Pi Yi Du, Ge Shen und Gao Rong Han. „Sol-Gel Derived Biphasic HA/FA Coatings“. Key Engineering Materials 309-311 (Mai 2006): 651–54. http://dx.doi.org/10.4028/www.scientific.net/kem.309-311.651.

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In order to optimize the dissolution resistance, cell attachment and Ca and P releasing ability of the calcium phosphate coatings, Hydroxyapatite/fluorapatite (HA/FA) biphasic coatings are prepared and characterized. Ultrasonically dispersing of HA powders in the mixed ethanol solution of Ca(NO3)2, P2O5 and HPF6, to form a “colloidal sol” for dip coating. The coatings are prepared on Ti6Al4V substrate by dip coating, 150oC drying and 600oC firing. The coatings are characterized by X-ray Diffractometer for the crystalline phase, X-ray Photoelectron Spectroscopy for chemical composition and Scanning Electron Microscopy for the surface morphology. The results show biphasic HA/FA coatings with homogenous distribution of HA particle in the FA matrix can be obtained. The nominal F content of the coatings decreases with the increasing amount of HA, and the surface morphology is rough. These demonstrate the obtained biphasic HA/FA coatings are suitable to response to cells, accelerating bone formation.

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Cho, W. D., T. B. Byeon, K. A. Hempel, D. Bonnenberg, C. Sürig und T. O. Kim. „Ba-Ferrite Films Prepared by Sol-Gel Dip Coating“. Le Journal de Physique IV 07, Nr. C1 (März 1997): C1–499—C1–500. http://dx.doi.org/10.1051/jp4:19971204.

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Januskevicius, Justinas, Zivile Stankeviciute, Dalis Baltrunas, Kęstutis Mažeika, Aldona Beganskiene und Aivaras Kareiva. „Aqueous Sol-Gel Synthesis of Different Iron Ferrites: From 3D to 2D“. Materials 14, Nr. 6 (22.03.2021): 1554. http://dx.doi.org/10.3390/ma14061554.

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In this study, an aqueous sol-gel synthesis method and subsequent dip-coating technique were applied for the preparation of yttrium iron garnet (YIG), yttrium iron perovskite (YIP), and terbium iron perovskite (TIP) bulk and thin films. The monophasic highly crystalline different iron ferrite powders have been synthesized using this simple aqueous sol-gel process displaying the suitability of the method. In the next step, the same sol-gel solution was used for the fabrication of coatings on monocrystalline silicon (100) using a dip-coating procedure. This resulted, likely due to substrate surface influence, in all coatings having mixed phases of both garnet and perovskite. Thermogravimetric (TG) analysis of the precursor gels was carried out. All the samples were investigated by X-ray powder diffraction (XRD) analysis. The coatings were also investigated by scanning electron microscopy (SEM), atomic force microscopy (AFM) and Mössbauer spectroscopy. Magnetic measurements were also carried out.

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Liu, Irene ChaoYun, Xin Hu, Bin Fei, Chenghao Lee, Suju Fan, John H. Xin und Nuruzzaman Noor. „Fluorine-free nanoparticle coatings on cotton fabric: comparing the UV-protective and hydrophobic capabilities of silica vs. silica-ZnO nanostructures“. RSC Advances 14, Nr. 7 (2024): 4301–14. http://dx.doi.org/10.1039/d3ra08835a.

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Butt, Muhammad A., Cuma Tyszkiewicz, Katarzyna Wojtasik, Paweł Karasiński, Andrzej Kaźmierczak und Ryszard Piramidowicz. „Subwavelength Grating Waveguide Structures Proposed on the Low-Cost Silica–Titania Platform for Optical Filtering and Refractive Index Sensing Applications“. International Journal of Molecular Sciences 23, Nr. 12 (14.06.2022): 6614. http://dx.doi.org/10.3390/ijms23126614.

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The sol–gel dip-coating method is a cost-efficient way for the realization of thin films on a planar substrate. In this work, high-quality, low-loss, and low-surface roughness silica–titania thin films are deposited on a glass substrate with the sol–gel dip-coating method. This platform works in the visible to near-IR wavelength ranges and can be useful for several eye-catching photonic components. The paper is comprised of two parts: the first part deals with the development of a low-cost silica–titania waveguide system, whereas the second part provides detail on the numerical modeling of the SWG waveguide filter and SWG waveguide FP-sensor design. The SWG waveguide NIR-stopband filter can achieve an ER of >40 dB and 3-dB bandwidth of 110 nm designed at optimized parameters. The SWG waveguide-FP structure proposed in this work act as a refractive index sensor where the sensitivity is ~120 nm/RIU by reducing the width of the waveguide. This sensitivity can be further enhanced by reducing the waveguide height. We believe that this work is quite important for the realization of low-cost integrated photonic devices based on the silica–titania platform developed via the sol–gel dip-coating method.

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Na, Moon Kyong, Myeong Sang Ahn und Hoy Yul Park. „Properties of Sol-Gel Coating Film from Colloidal Silica-Silane Sol“. Materials Science Forum 544-545 (Mai 2007): 813–16. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.813.

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Two kinds of colloidal silica(CS)/silane sol solutions were prepared. Two sol solutions are involved with the kinds of silane such as methyltrimethoxysilane(MTMS) and -Glycidoxypropyl trimethoxysilane(ETMS) using LS CS. MTMS was added to two sol solutions. Whether ETMS was added or not, two kinds of sol solutions were synthesized. Using two kinds of sol solutions, sol-gel coating films were formed on glass substrates via dip-coating process. Here, seasoning effect of for enhancing properties of sol-gel coating layer on glass was investigated while such sol-gel solutions were left for 7days. Also, their properties such as surface free energy, roughness, thermal property, potential hardness and elastic portion were characterized in order to understand the effect of addition of ETMS. In this case of LS/MTMS sol, the coating film had low surface free energy and more enhanced flat surface than that of the case of LS/MTMS/ETMS sol. ETMS forms hydrophilic hydroxyl group in sol solution, then surface free energy of LS/MTMS/ETMS coating film increased. In the beginning of reaction sol solution seemed to be unstable, but 4days later their coating film properties such as surface free energy and roughness enhanced. The elastic portion of coating films obtained from LS/MTMS/ETMS sol increased with addition of ETMS, but thermal stability decreased.

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Zhang, X., V. A. Spiridonov, D. I. Panov, I. M. Sosnin und A. E. Romanov. „Preparation of Ga2O3 Thin Films by Sol-Gel Method—a Concise Review“. Reviews on Advanced Materials and Technologies 5, Nr. 2 (2023): 10–24. http://dx.doi.org/10.17586/2687-0568-2023-5-2-10-24.

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Nowadays, gallium oxide (Ga2O3) as a wide bandgap semiconductor material is acquiring more and more attention in various practical areas. As a result, there has been a lot of efforts to fabricate and study bulk Ga2O3 material, Ga2O3 thin films, and Ga2O3 nanowires. For Ga2O3 films, there exists a variety of preparation methods such as metal-organic chemical vapor deposition, hydride vapor phase epitaxy, pulsed laser deposition, molecular beam epitaxy, frequency magnetron sputtering, atomic layer deposition, wet chemistry, and sol-gel. This concise review focuses on the preparation of Ga2O3 thin films by sol-gel methods. Sol-gel methods include dip-coating, spin-coating, spray pyrolysis, and drop casting technique. The details on the fabrication of β-Ga2O3 thin films by sol-gel method are summarized and prospected. Polymorphism, structure and properties of sol-gel prepared Ga2O3 films are discussed.

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Malek, Mohd Firdaus, Mohamad Hafiz Mamat, Musa Mohamed Zaihidi, Mohd Zainizan Sahdan, Zuraida Khusaimi und Mohamad Rusop Mahmood. „Formation of ZnO Nanoparticulate Thin Film: Sol-Gel Synthesis and Characterisation“. Advanced Materials Research 832 (November 2013): 362–67. http://dx.doi.org/10.4028/www.scientific.net/amr.832.362.

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ZnO thin films have been prepared sol gel dip coating method using zinc acetate dehydrate (Zn(CH3COO)2·2H2O, Merck) as cation source, 2-methoxyethanol (C3H8O2, Merck) as solvent and monoethanolamine, MEA (C2H7NO, R&M) as sol stabilizer. Film deposition was performed by dip-coating technique at a fixed deposition rate on Corning 7740 glass substrate. The effect of sol concentration on the properties of the thin films is discussed. The effect of the sol concentration on produced ZnO films was found to be significant. X-ray analysis showed that thin films were preferentially orientated along the c-axis direction of the crystal. Besides, the films had a transparency of greater than 80% in the visible region for sol–gels with a zinc content of up to 0.8 M and exhibited absorption edges at ~375 nm.

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Park, Hoy Yul, Moon Kyong Na, Seog Young Yoon und Seong Soo Park. „Properties of Coating Films Synthesized from Colloidal Silica and Methyltrimethoxysilane“. Materials Science Forum 544-545 (Mai 2007): 1037–40. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.1037.

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Colloidal silica/methyltrimethoxysilane (MTMS) sol solutions were prepared in variation with the ratio of MTMS to colloidal silica. Sol solutions were prepared by sol-gel reaction. To understand their physical and chemical properties, dip coating of sol solutions was performed on the glass substrates. The state of coating films was investigated in variation with the amount of MTMS and reaction time. The contact angle and thickness of coating films increased with an increasing amount of MTMS. The surface roughness of coating films decreased with an increasing amount of MTMS. Coating films were stable until 550°C. Thermal degradation temperature of coating films decreased with an increasing amount of MTMS.

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Periyasamy, Aravin Prince, Mohanapriya Venkataraman, Dana Kremenakova, Jiri Militky und Yan Zhou. „Progress in Sol-Gel Technology for the Coatings of Fabrics“. Materials 13, Nr. 8 (14.04.2020): 1838. http://dx.doi.org/10.3390/ma13081838.

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The commercial availability of inorganic/organic precursors for sol-gel formulations is very high and increases day by day. In textile applications, the precursor-synthesized sol-gels along with functional chemicals can be deposited onto textile fabrics in one step by rolling, padding, dip-coating, spraying or spin coating. By using this technology, it is possible to provide fabrics with functional/multi-functional characteristics including flame retardant, anti-mosquito, water- repellent, oil-repellent, anti-bacterial, anti-wrinkle, ultraviolet (UV) protection and self-cleaning properties. These surface properties are discussed, describing the history, basic chemistry, factors affecting the sol-gel synthesis, progress in sol-gel technology along with various parameters controlling sol-gel technology. Additionally, this review deals with the recent progress of sol-gel technology in textiles in addressing fabric finishing, water repellent textiles, oil/water separation, flame retardant, UV protection and self-cleaning, self-sterilizing, wrinkle resistance, heat storage, photochromic and thermochromic color changes and the improvement of the durability and wear resistance properties.

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Kirchberg, Kristin, und Roland Marschall. „Sol–gel synthesis of mesoporous CaFe2O4 photocathodes with hierarchical pore morphology“. Sustainable Energy & Fuels 3, Nr. 5 (2019): 1150–53. http://dx.doi.org/10.1039/c8se00627j.

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Kumar, Sanjay, Sudhir Saralch und Dinesh Pathak. „Low-cost deposition of cupric oxide thin films for optoelectronic applications“. European Physical Journal Applied Physics 84, Nr. 2 (November 2018): 20301. http://dx.doi.org/10.1051/epjap/2018180194.

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Copper oxide is a compound that has been considered significant owing to its many advantages such as easy availability of copper in huge quantity, its non-toxic nature and the good electrical and optical properties. It is p-type with bandgap range of 1.21–1.51 eV and has potential of absorption of solar spectrum. In this work, sol–gel chemistry is explored to deposit CuO using cupric chloride dihydrate (CuCl2 · 2H2O) with 5, 10 and 15% concentration of EDTA (capping agent) using low-cost dip-coating and annealed at 400 °C. The bandgap of the CuO films was found to be in the range of 1.3–1.8 eV, which is comparable with the reported values and also suggests quantum shift in these nanostructures. These investigations suggest suitability of these layers as absorber for photovoltaic applications. SEM investigation suggests the uniform growth of layers by dip-coating techniques. Capping also appears to control the grain growth as observed by electron microscopy. Sol–gel dip-coating technique is presented in this study for deposition of flat layers.

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Setina, Janina, Alona Gabrene, Inna Juhnevica und Gundars Mezinskis. „Characterization of Iron Oxide Nanoparticles for Sol-Gel Dip-Coating Method Prepared Thin Films“. Advanced Materials Research 704 (Juni 2013): 275–80. http://dx.doi.org/10.4028/www.scientific.net/amr.704.275.

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The paper describes two methods of syntheses of iron oxides, microstructure and morphology of magnetite nanoparticles. Nanocomposite thin films of SiO2/Fe3O4 have been prepared with sol-gel dip coating technique: dip-coating from SiO2/Fe3O4 sol and encapsulation magnetite between two SiO2 layers. Structural and morphological characteristics of iron oxides particles and prepared film were analyzed by X-Ray Diffraction, SEM, FTIR, DTA, AFM. AFM topography of surface and measurements of roughness has shown that using iron oxide encapsulation between two SiO2 layers to provide the even distribution of iron oxide, results as high quality films with low Rq values 1.5 2.7 nm.

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Hilliard, Samantha, Guido Baldinozzi, Dennis Friedrich, Stéphane Kressman, Henri Strub, Vincent Artero und Christel Laberty-Robert. „Correction: Mesoporous thin film WO3 photoanode for photoelectrochemical water splitting: a sol–gel dip coating approach“. Sustainable Energy & Fuels 1, Nr. 5 (2017): 1204. http://dx.doi.org/10.1039/c7se90017a.

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Correction for ‘Mesoporous thin film WO₃ photoanode for photoelectrochemical water splitting: a sol–gel dip coating approach’ by Samantha Hilliard et al., Sustainable Energy Fuels, 2017, 1, 145–153.

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Park, Hoy Yul, Dong Pil Kang, In Hye Myung und Seog Young Yoon. „Properties of Coating Films Synthesized from Nano Colloidal Silica and Alkoxy Silanes“. Materials Science Forum 510-511 (März 2006): 222–25. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.222.

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Colloidal silica/silane sol solutions were prepared in variation with the ratio of silane to colloidal silica. Such sol solutions were synthesized from colloidal silica/tetramethoxysilane (TMOS)/methyltrimethoxysilane(MTMS). Sol solutions were prepared by sol-gel reaction through two step reactions. To understand their physical and chemical properties, dip coating of sol solutions was performed on the glass substrates. Contact angle and thickness of coating films increased with increasing the amount of MTMS. The surface free energy of coating films decreased with increasing amount of MTMS. Coating films were stable until 550°C. Thermal degradation temperature of coating films decreased with increasing amount of MTMS. Plastic hardness decreased with increasing amount of MTMS. Elastic portion increased with increasing amount of MTMS.

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Lee, Jung-Won, Chang-Whan Won, Byong-Sun Chun und H. Y. Sohn. „Dip coating of alumina films by the sol-gel method“. Journal of Materials Research 8, Nr. 12 (Dezember 1993): 3151–57. http://dx.doi.org/10.1557/jmr.1993.3151.

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Thin alumina films were prepared on stainless steel and glass surfaces by dip coating from an aluminum alkoxide solution. Multiple coatings from a low-viscosity solution were necessary for high quality and sufficient thickness of the films. To determine the bonding mechanism and strength, wavelength dispersive x-ray was used. Aluminum was found to diffuse into the substrate in both cases. The possible bonding mechanism is a combination of diffusion and the formation of chemical compound between the alumina and the substrates. The surface properties of stainless steel, such as microhardness, electric resistance, and corrosion resistance, were substantially improved when coated with alumina.

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Celik Bedeloglu, Ayse, und Zeynep Islek Cin. „Functional sol-gel coated electrospun polyamide 6,6/ZnO composite nanofibers“. Journal of Polymer Engineering 39, Nr. 8 (27.08.2019): 752–61. http://dx.doi.org/10.1515/polyeng-2019-0099.

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Abstract Polymer-based nanofibers are good candidates for medical textiles due to their excellent properties including high surface area, breathability and flexibility. Doping polymer nanofibers with different nanoparticles enhances their existing properties. In this study, electrospun polyamide 6,6 (PA6,6) composite nanofibers containing ZnO nanoparticles (<50 nm) in different amounts (1%, 3% and 5%) were first produced by electrospinning technique; then, these nanofibers were coated with sol-gel ZnO solution (0.5 m) via dip coating method at 1000, 3000 and 5000 μm/s speeds. The sol-gel coating process increased the breaking strength of nanofiber mats, while the incorporation of ZnO nanoparticles into the polymer nanofibers reduced. Compared to pure PA6,6 nanofiber mats, the ZnO sol-gel coated samples and doped nanofibers had lower reflectance values. In addition, the reflection values decreased as the additive and coating speed increased.

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Catauro, Michelina, Flavia Bollino, Ferdinando Papale und Giuseppe Lamanna. „TiO₂/PCL Hybrid Layers Prepared via Sol-Gel Dip Coating for the Surface Modification of Titanium Implants: Characterization and Bioactivity Evaluation“. Applied Mechanics and Materials 760 (Mai 2015): 353–58. http://dx.doi.org/10.4028/www.scientific.net/amm.760.353.

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When bioactive coatings are applied to medical implants by means of sol-gel dip coating technique, the biological proprieties of the implant surface can be modified to match the properties of the surrounding tissues. In this study, sol-gel method is used to synthesized organic-inorganic nanocomposites materials consisting of an inorganic titania matrix in which 10 wt% of a biodegradable polymer, the poly-ε-caprolactone (PCL), was incorporated. The synthesized materials, in sol phase, were used to dip-coat a commercially pure titanium grade 4 substrate in order to improve its surface biological properties. Materials were characterized using Fourier transform infrared spectroscopy (FT-IR) and a morphological analysis of the obtained films was performed via scanning electron microscopy (SEM). Coating bioactivity was investigated by soaking coated substrates in a fluid simulating the human blood plasma (SBF) and successively evaluating the formation of a hydroxyapatite layer on their surface by means of SEM/EDX (energy dispersive X-ray).

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Pang, Yan, Yao Chen, Qi Qiu, Fang Wang und Zhang Tao. „Sol-Gel Preparation of Optically Transparent Hydrophobic Hybrid Coating“. Advanced Materials Research 391-392 (Dezember 2011): 505–10. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.505.

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Optically transparent hydrophobic inorganic-organic hybrid sols was obtained employing Tetraethylorthosilicate (TEOS), Methyltriethoxysilane (MTES), and Heptadecafluoro-1, 1, 2, 2-tetradecyl)trimethoxysilane (FAS), with nitric acid as catalyst. Hybrid coating was dip coated on glass slides. The results showed that the water contact angle of MTES modified SiO2 coating was only 105° . As the weight ratio FAS varied from 0 to 8 wt.%, the water contact angle reached as high as 116.5°. The coated glass presented transmittance of 92%, 2% higher than the non-coated ones. The increase in transmittance suggested an antireflective effect of the hybrid coating. With further SEM characterization of the surface morphology, we finally obtained the optimized optically transparent hydrophobic hybrid coating with the MTES/TEOS_as 1/1(molar ratio) and FAS as 2 wt.%.

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Liu, Rui Ping, Wei Ming Su und Chang An Wang. „Preparation and Characterization of Al₂O₃-Based Composite Membranes by Sol-Gel Method“. Key Engineering Materials 655 (Juli 2015): 108–13. http://dx.doi.org/10.4028/www.scientific.net/kem.655.108.

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Porous Al2O3-SiO2-ZrO2 ceramic composite membranes were fabricated by the sol-gel method. The effects of constitution of the composite sol, dip-coating parameters and calcination parameters on the morphology, phase composition, pore size distribution and BET surface area of the membranes were investigated extensively. The thermogravimetric analysis (TGA)/differential scanning calorimeters (TG/DSC), scanning Electron Microscopy (SEM), XRD analysis and N2 adsorption-desorption analysis was employed for the membranes characterization. TG/DSC curve shows that the suitable calcination temperature of Al2O3-SiO2-ZrO2 membranes is 1000°C. The SEM morphology displays a smooth and free-crack layer of Al2O3-SiO2-ZrO2 composite membranes on the surface of the support after calcination at 1000°C. Furthermore, the membranes were also successfully coated with a good adhesion to the support. The optimal composite membranes were obtained when the moral ratio of Al2O3-SiO2-ZrO2 was 10:2.3:1, the dip-coating parameters were four times dip-coating with every time of 60s respectively.

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Covelo, Alba, Juan Genescá, Arturo Barba, Carmina Menchaca, Jorge Uruchurtu und Miguel Hernández. „Corrosion Behavior of Hybrid Sol-Gel Films Reinforced with Electrospun Nanofibers“. Solid State Phenomena 227 (Januar 2015): 119–22. http://dx.doi.org/10.4028/www.scientific.net/ssp.227.119.

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The aim of this paper is to evaluate the efficiency of hybrid sol-gel coatings reinforced with electrospinning nanofibers doped with cerium nitrate and ceria particles to increase the corrosion properties of the coating. Poly(vinyl alcohol) solutions doped with cerium nitrate and ceria were electrospun onto clean commercial aluminum alloy AA2024-T3 plates and then coated with a hybrid sol-gel system using the dip-coating procedure. The hybrid materials synthesized via sol-gel chemistry were prepared from inorganic-organic precursors: zirconium (IV) propoxide and 3-glycidoxypropyltrimetoxysilane. The electrochemical impedance spectroscopy technique was applied to evaluate the electrochemical properties of the film whereas scanning electron microscopy and atomic force microscopy were employed to characterize the surface characteristics. The incorporation of nanofibers into the sol-gel system provides good barrier properties that increase the corrosion resistance of the aluminum at longer exposure times in saline media. This protection depends of the type of inhibitor loaded within the electrospun nanofibers.

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Singh, Dalip, Dharmesh Yadav, Ajay Saini, Veena Dhayal und D. C. Agarwal. „Evaluate Mechanical Behaviour of Alumina Coated Steel Alloy Using Slow Strain Rates Test“. Advanced Science, Engineering and Medicine 11, Nr. 11 (01.11.2019): 1049–52. http://dx.doi.org/10.1166/asem.2019.2453.

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This investigation is concerned with the mechanical property enhancement of the steel alloy by deposition of alumina coating using dip coating method. Alumina coatings were deposited using oxime-modified aluminum(III) isopropoxide as a sol–gel precursor. The Scanning electron microscopy (SEM) images of the coated samples suggest deposition of uniform alumina coatings and alumina composition over steel alloy. The mechanical property of the bare, dip coated steel alloy samples were investigated by the slow strain rate test (SSRT). The SSRT indicates that dip coated steel alloy shows higher ultimate tensile strength as compare to the bare samples.

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Kuncová, Gabriela, Massimo Guglielmi, Pavel Dubina und Bohuslav Šafář. „Lipase Immobilized by Sol-Gel Technique in Layers“. Collection of Czechoslovak Chemical Communications 60, Nr. 9 (1995): 1573–77. http://dx.doi.org/10.1135/cccc19951573.

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Commercial lipase was immobilized into an organic-inorganic matrix formed by hydrolysis of silicon alkoxides (tetraethoxysilane, dimethyldiethoxysilane and methyltriethoxysilane) with (3-aminopropyl)triethoxysilane, (3-thiopropyl)trimethoxysilane and chlorodiisopropyloctylsilane. Hydrolytic activity of lipase was tested after addition of the enzyme to a prepolymer solution, after gelation, in xerogel particles and in thin layers deposited on glass slides by dip- or spin-coating. The prepolymer containing NH groups showed the higher activity then the native enzyme.

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Chen, Yu, Aolin Li, Yige Li, Junfei Li, Guozhang Dai, Ouyang Fangping und Xiang Xiong. „Highly transparent porous ZrO2 thin films: fabrication and optical properties“. RSC Advances 5, Nr. 45 (2015): 35929–33. http://dx.doi.org/10.1039/c5ra01772f.

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Porous ZrO₂ thin films that are highly transparent to visible and infrared light were fabricated via a simple sol–gel dip-coating method, and have promising potential applications in solar cells as a high-temperature-resistant insulating layer.

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Zhu, Maodong, Hongji Qi, Bin Wang, Hu Wang, Dongping Zhang und Weizhong Lv. „Enhanced visible transmittance and reduced transition temperature for VO2 thin films modulated by index-tunable SiO2 anti-reflection coatings“. RSC Advances 8, Nr. 51 (2018): 28953–59. http://dx.doi.org/10.1039/c8ra05479g.

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Index-tunable anti-reflection SiO₂ coatings prepared on the surface of VO₂ films by sol–gel dip-coating technique to enhance the visible and infrared transmittance of SiO₂/VO₂ films.

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Tian, Jing, Shu Kang Deng und Pei Zhi Yang. „Optimization of Porous SiO₂ Antireflective (AR) Coatings Used in Encapsulating Solar Modules“. Advanced Materials Research 739 (August 2013): 94–100. http://dx.doi.org/10.4028/www.scientific.net/amr.739.94.

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Base catalyzed sol-gel derived porous SiO2 coatings are prospectively used as antireflective (AR) layer for encapsulating solar modules. In this paper, the properties of SiO2 AR layers coated on solar glass by different dip-coating and annealing conditions are investigated and optimized. It is shown that the transmittance of the AR coating is affected by these preparation conditions which closely related to the thickness and surface morphology. As results, the SiO2 coating had a better performance both in transmittance and adhesion when the dip-coating speed and the annealing temperature are 0.036mm/s and 300°C respectively. Further more, TMCS hydrophobic treatment was adopted to make the AR coating meet the demands of practical application.

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Qi, Guo Chao, Sam Zhang, Qiang Li, Feng Jun Shan, Jing Yuan Yu, Qiang Da Yang, Qu Kai Zhang und Chun Ming Liu. „Magnesium Incorporation in Sol-Gel Derived Apatite Coating on Ti6Al4V Substrate“. Advanced Materials Research 299-300 (Juli 2011): 448–51. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.448.

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A series of the magnesium apatite coatings according to (Ca10-xMgx)(PO4)6(OH)2, where x = 0 to 2, was synthesized through a sol-gel dip-coating method. The roughness of the magnesium coatings increased as more magnesium incorporated into the coatings. The mechanical properties of the coatings were analyzed with Nanoindentor. The incorporation of magnesium decreased the hardness and the Young’s modulus of the coating. The X-ray Photoelectron Spectroscopy (XPS) analysis revealed that only part of magnesium was incorporated into the apatite structure while the rest existed in the form of MgO in the coating.

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Malnieks, Kaspars, Gundars Mezinskis und Ilona Pavlovska. „Effect of Different Dip-Coating Techniques on TiO₂ Thin Film Properties“. Key Engineering Materials 721 (Dezember 2016): 128–32. http://dx.doi.org/10.4028/www.scientific.net/kem.721.128.

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TiO2 three-layer sol-gel films have been deposited on soda-lime silicate glass slides and dried in two different ways to study the effect of drying on thin film structure. The structural properties, surface topography and photocatalytic activity of the films were studied by X-ray diffraction, atomic force microscopy, and by analysing photocatalytic degradation of methyl orange, respectively. The titanium oxide sol-gel layers on glass slides dried at 20 °C before the deposition of next layers after final calcination at 500 °C resulted in a nanorod array film with good photocatalytic activity.

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SAKKA, Sumio. „Amorphous materials - Preparation of dip coating films by sol-gel method.“ Jitsumu Hyomen Gijutsu 33, Nr. 2 (1986): 42–49. http://dx.doi.org/10.4139/sfj1970.33.42.

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Casula, M. F., A. Corrias, A. Falqui, V. Serin, D. Gatteschi, C. Sangregorio, C. de Julián Fernández und G. Battaglin. „Characterization of FeCo−SiO2Nanocomposite Films Prepared by Sol−Gel Dip Coating“. Chemistry of Materials 15, Nr. 11 (Juni 2003): 2201–7. http://dx.doi.org/10.1021/cm0217755.

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Kayani, Zohra N., Faiza Kiran, Fareeha Nazir, Erum Shahid Khan, Saira Riaz und Shahzad Naseem. „Preparation of Thin Film of NiZnO by Sol-Gel Dip Coating“. Materials Today: Proceedings 2, Nr. 10 (2015): 5607–10. http://dx.doi.org/10.1016/j.matpr.2015.11.096.

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Bottein, Thomas, Jérôme Loizillon und David Grosso. „Full Investigation of Angle Dependence in Dip-Coating Sol–Gel Films“. Journal of Physical Chemistry B 121, Nr. 25 (16.06.2017): 6220–25. http://dx.doi.org/10.1021/acs.jpcb.7b04122.

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Kalaivanan, A., S. Perumal, N. Neelakanda Pillai und K. R. Murali. „Characteristics of GZO thin films deposited by sol–gel dip coating“. Materials Science in Semiconductor Processing 14, Nr. 2 (Juni 2011): 94–96. http://dx.doi.org/10.1016/j.mssp.2011.01.002.

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Canut, B., M. G. Blanchin, V. Teodorescu und A. Traverse. „Structure of Ni/SiO2 films prepared by sol–gel dip coating“. Journal of Non-Crystalline Solids 353, Nr. 27 (August 2007): 2646–53. http://dx.doi.org/10.1016/j.jnoncrysol.2007.05.009.

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UCHIYAMA, Hiroaki. „Evaporation-driven self-organization of sol–gel dip-coating films“. Journal of the Ceramic Society of Japan 123, Nr. 1438 (2015): 457–64. http://dx.doi.org/10.2109/jcersj2.123.457.

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48

Faustini, Marco, Benjamin Louis, Pierre A. Albouy, Monika Kuemmel und David Grosso. „Preparation of Sol−Gel Films by Dip-Coating in Extreme Conditions“. Journal of Physical Chemistry C 114, Nr. 17 (02.04.2010): 7637–45. http://dx.doi.org/10.1021/jp9114755.

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Rao, A. Venkateswara, Annaso B. Gurav, Sanjay S. Latthe, Rajiv S. Vhatkar, Hiroaki Imai, Charles Kappenstein, P. B. Wagh und Satish C. Gupta. „Water repellent porous silica films by sol–gel dip coating method“. Journal of Colloid and Interface Science 352, Nr. 1 (Dezember 2010): 30–35. http://dx.doi.org/10.1016/j.jcis.2010.08.003.

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Moujoud, A., M. P. Andrews und S. I. Najafi. „Fabrication of Sol-Gel Optical Waveguide by Hot-Dip Coating Process“. Journal of Sol-Gel Science and Technology 35, Nr. 2 (August 2005): 123–26. http://dx.doi.org/10.1007/s10971-005-1380-7.

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