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Journal articles on the topic 'Dip coating; Alkoxides'

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Published: 4 June 2021

Last updated: 3 February 2022

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1

Katayama, Shingo, and Masahiro Sekine. "Bi–Sr–Ca–Cu–O superconducting films fabricated using metal alkoxides." Journal of Materials Research 6, no. 1 (1991): 36–41. http://dx.doi.org/10.1557/jmr.1991.0036.

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Superconducting films in the Bi–Sr–Ca–Cu–O systems were made using metal alkoxides. To prepare a dip-coating solution using a mixed alkoxide solution, insoluble Cu and Bi alkoxides were dissolved by modification with 2-dimethylaminoethanol and formation of a double alkoxide, respectively. Formation of the double alkoxides of Bi with Ca or Sr was confirmed using FT-IR and 1H-NMR. Bi–Sr–Ca–Cu–O films on yttria-stabilized ZrO2 and single crystal MgO(100) substrates were made using this solution. The films were closely oriented along the c-axis perpendicular to the substrate. The film on MgO(100)

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2

Gbureck, A., U. Gbureck, W. Kiefer, U. Posset, and R. Thull. "FT-Raman Spectroscopic Investigations of Titanium Alkoxides with Polymerizable Organic Ligands." Applied Spectroscopy 54, no. 3 (2000): 390–95. http://dx.doi.org/10.1366/0003702001949465.

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Chelating agents are frequently used in sol-gel chemistry to decrease hydrolytic reactivity and uncontrolled precipitation of titanium alkoxides. The use of polymerizable organic compounds as chelating agents allows for the formation of copolymers consisting of hybrid inorganic/organic networks. The main task of this study was the analytical characterization of new molecular precursors and organically modified titanium oxide films. Methacrylic acid, itaconic anhydride, isoeugenol, and 2-acrylamido-2-methylpropane sulfonic acid were reacted with titanium isopropoxide and titanium ethoxide to fo

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3

Rivero, Pedro, Juan Maeztu, Calos Berlanga, Adrian Miguel, José Palacio, and Rafael Rodriguez. "Hydrophobic and Corrosion Behavior of Sol-Gel Hybrid Coatings Based on the Combination of TiO2 NPs and Fluorinated Chains for Aluminum Alloys Protection." Metals 8, no. 12 (2018): 1076. http://dx.doi.org/10.3390/met8121076.

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In this work, layers of a sol-gel hybrid matrix doped with metal oxide nanoparticles (TiO2 NPs) have been deposited on flat samples of AA6061-T6 aluminum alloy using the dip-coating technique, with the aim of obtaining coatings with better anti-corrosive and hydrophobic properties. Two different organic modified silica alkoxides, namely 3-(glycidyloxypropyl)trimethoxysilane (GPTMS) and methyltriethoxysilane (MTEOS), have been used for an adequate entrapment of the metal oxide nanoparticles. In addition, a fluorinated metal-alkoxide precursor has also been added to the hybrid matrix in order to

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4

Kuncová, Gabriela, Massimo Guglielmi, Pavel Dubina, and Bohuslav Šafář. "Lipase Immobilized by Sol-Gel Technique in Layers." Collection of Czechoslovak Chemical Communications 60, no. 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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RUANTHON, AUN-ANONG, THAPANEE SARAKONSRI, and CHANCHANA THANACHAYANONT. "PREPARATION OF CdIn2Se4n-TYPE SEMICONDUCTOR USED AS THERMOELECTRIC MATERIAL BY SOL–GEL METHOD." Functional Materials Letters 02, no. 04 (2009): 199–203. http://dx.doi.org/10.1142/s1793604709000806.

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The objective of this research was to study the effect of various parameters such as temperature and pH to the formation of cadmium indium selenide ( CdIn2 Se 4 ) thin films, which were fabricated by sol–gel dip-coating method. This n-type semiconductor compound is suitable for application as thermoelectric materials. Cadmium, indium, selenium precursors were separately dissolved by solvents: ethanol, hydrochloric acid, and acetic acid to form metal alkoxides. The precursor solutions were then mixed together in N 2 atmosphere. These metal alkoxides were hydrolyzed by adding water and then poly

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6

Lee, Jung-Won, Chang-Whan Won, Byong-Sun Chun, and H. Y. Sohn. "Dip coating of alumina films by the sol-gel method." Journal of Materials Research 8, no. 12 (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, el

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7

Kunst, Sandra Raquel, Cláudia Trindade Oliveira, Rogério Freitas dos Santos, Jean Pierre Bonino, Florence Ansart, and Célia de Fraga Malfatti. "Hybrids Films Obtained on ZnNi Substrates: Effect of Withdrawal Speed." Materials Science Forum 727-728 (August 2012): 1769–74. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.1769.

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Due to the environment and economical questions, the use of cadmium coatings, in the aeronautical and automotive industries, has been prohibited. In this context, ZnNi coating alloys have been propose to replace cadmium coatings due to its properties. However, in order to postpone the corrosion of ZnNi alloy, hybrids films obtained by sol-gel process have been studied. In this work, hybrids films were obtained on ZnNi coating by dip-coating process from a sol constituted of alkoxide precursors: γ-methacryloxypropyl-trimethoxysilane and tetraethoxysilane with cerium nitrate addition (0.01 M). T

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8

Jung, T. H., and R. V. Subramanian. "Alkali resistance enhancement of basalt fibers by hydrated zirconia films formed by the sol-gel process." Journal of Materials Research 9, no. 4 (1994): 1006–13. http://dx.doi.org/10.1557/jmr.1994.1006.

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Basalt fibers were dip-coated in zirconium-n-propoxide, unstabilized or stabilized by chelation with ethyl acetoacetate. The thermal transformations of the hydrated zirconia coatings formed were investigated by dynamic x-ray diffraction and differential thermal analysis. The changes in the surface chemical compositions of coated and uncoated fibers, following alkali immersion extending to 90 days, were characterized by EDXA and IR spectral analysis. Fiber strengths were also measured after immersion in 0.1 M NaOH for different durations. It was found that the transition of the amorphous zircon

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9

Takahashi, Yasutaka, and Yukihisa Wada. "Dip‐Coating of Sb‐Doped SnO2 Films by Ethanolamine‐Alkoxide Method." Journal of The Electrochemical Society 137, no. 1 (1990): 267–72. http://dx.doi.org/10.1149/1.2086380.

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10

Gartner, Măriuca, M. Crisan, L. Predoana, Maria Zaharescu, A. Barau, and S. Preda. "Monocomponent Powders and Thin Films in the Binary System SiO₂–TiO₂." Key Engineering Materials 333 (March 2007): 289–92. http://dx.doi.org/10.4028/www.scientific.net/kem.333.289.

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In this work, we report the sol-gel alkoxide route preparation of nanostructured SiO2 and TiO2 powders as well as TiO2-SiO2 thin films obtained by dip-coating. Thermal analysis, morphology and structure were characterized for powders and correlation between preparation method and optical properties of binary materials (SiO2-TiO2) for thin films was approached. Spectroscopic Ellipsometry (SE), Fourier Transform Infrared Spectroscopy (FTIR) and scanning electron microscopy (SEM) have been used for the physical characterization of the films.

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11

Takahashi, Yasutaka, Yoshihiro Matsuoka, Kouichi Yamaguchi, Michiyasu Matsuki, and Keisuke Kobayashi. "Dip coating of PT, PZ and PZT films using an alkoxide-diethanolamine method." Journal of Materials Science 25, no. 9 (1990): 3960–64. http://dx.doi.org/10.1007/bf00582467.

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12

Kato, K., A. Tsuzuki, H. Taoda, Y. Torii, T. Kato, and Y. Butsugan. "Crystal structures of TiO2 thin coatings prepared from the alkoxide solution via the dip-coating technique affecting the photocatalytic decomposition of aqueous acetic acid." Journal of Materials Science 29, no. 22 (1994): 5911–15. http://dx.doi.org/10.1007/bf00366875.

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13

Nonaka, Toshihisa, Kimiyoshi Kaneko, Tetsuya Hasegawa, et al. "Ba-Y-Cu-O Thin Films Fabricated by Dip Coating Using Concentrated Mixed Alkoxide Solution." Japanese Journal of Applied Physics 27, Part 2, No. 5 (1988): L867—L869. http://dx.doi.org/10.1143/jjap.27.l867.

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14

Horikawa, Hajime, Takashi Ogihara, Nobuo Ogata, Masahiro Asahara, and Xing Zheng Wu. "Electrode Properties of Dye Sensitized Solar Cell Using Ruthenium Complex/Titania Nano Crystal." Key Engineering Materials 320 (September 2006): 231–34. http://dx.doi.org/10.4028/www.scientific.net/kem.320.231.

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Titania nanocrystals were prepared by hydrolysis of titanium alkoxide in ethanol solution. The preparation of titania / alumina thin film was performed on ITO coated glass substrate by dip coating method using ethanol of titania nanocrystal and boemite sol. The crystal structures, microstructure and thickness of titania / alumina thin film were examined by XRD and SEM. The adsorption of dye was influenced by the surface structure of thin film. The adsorption of dye on the films was improved by the immersion into acid as HNO3. Ruthenium polypyridyl complex and triarylmethylium salt were used as

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15

Nonaka, T., M. Green, K. Kishio, et al. "Bi-Pb-Sr-Ca-Cu-O films fabricated by dip coating using the alkoxide-alkanolamine method." Physica C: Superconductivity 160, no. 5-6 (1989): 517–23. http://dx.doi.org/10.1016/0921-4534(89)90429-2.

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16

Kunst, Sandra Raquel, Gustavo Alberto Ludwig, Cláudia Trindade Oliveira, Joseane Santana, Victor Hugo Vitorino Sarmento, and Célia de Fraga Malfatti. "Corrosion Resistance of Hybrid Films Applied on TiN Plate: Precursor Solution Acidified with Hydrochloric Acid." Materials Science Forum 775-776 (January 2014): 370–74. http://dx.doi.org/10.4028/www.scientific.net/msf.775-776.370.

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The aim of this work is to coat tin plate with a hybrid film obtained from a sol consisting of alkoxide precursors: 3 - (trimethoxysilylpropyl) methacrylate (TMSM), poly (methyl methacrylate) PMMA with and without tetraethoxysilane (TEOS) addition. The pH = 3 was adjusted with hydrochloric acid. The films were obtained by dip-coating process, cured for 3 hours at 160 ° C, and characterized for their electrochemical behavior. The hydrophobicity of the film was determined by the contact angle measurements and its morphology was evaluated by SEM. Results showed that the hybrid films studied prese

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17

Uchiyama, Hiroaki, Wataru Namba, and Hiromitsu Kozuka. "Spontaneous Formation of Linear Striations and Cell-like Patterns on Dip-Coating Titania Films Prepared from Alkoxide Solutions." Langmuir 26, no. 13 (2010): 11479–84. http://dx.doi.org/10.1021/la1009708.

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18

Iwasaki, Dai, Miho Maruyama, Naonori Sakamoto, De Sheng Fu, Naoki Wakiya, and Hisao Suzuki. "Tunable Barium Strontium Titanate Thin Films by CSD." Key Engineering Materials 445 (July 2010): 156–59. http://dx.doi.org/10.4028/www.scientific.net/kem.445.156.

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BaxSr1-xTiO3 (BST) thin films were deposited by modified CSD, in which partially hydrolyzed Ti-alkoxide was reacted with Ba-Sr precursor solution to form highly polymerized BST precursor solutions, leading to the better electrical properties of the resultant thin films. BST precursor solutions of 0.1 M were prepared to deposit BST thin layers of 17nm ~ 20nm for one dip-coating operation with different barium to strontium ratio of Ba/Sr = 90/10, 70/30 and 50/50. Modified CSD-derived BST thin films were deposited on a Si wafer with Pt electrode or CSD-derived LaNiO3 (LNO) seeding layer with pref

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19

Noritake, Yasunobu, Hajime Kiyono, and Shiro Shimada. "Preparation and Corrosion of Mullite Thin Film on ß-SiAlON Ceramics." Key Engineering Materials 403 (December 2008): 135–38. http://dx.doi.org/10.4028/www.scientific.net/kem.403.135.

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Mullite film was formed on ß-SiAlON (Si6-zAlzOzN8-z, z = 3) ceramics by reaction of Al2O3 films with silica formed on oxidation to improve a high temperature water vapor corrosion resistance. Sintered ß-SiAlON was fabricated by hot pressing of ß-sialon (z = 3) powder without additive at 1900°C and at 24 MPa for 4 h in N2. The Al2O3 film was deposited on polished ß-SiAlON ceramics by a dip coating process of Al2O3 precursor sols prepared from the alkoxide solution and aluminum sol. The Al2O3 coated sample was heated in Ar/O2 (95/5 vol.%) at 1300°C for 2 h, resulting in the formation of mullite

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20

Chavhan, P. M., Anubha Sharma, R. K. Sharma, Gurmeet Singh, and N. K. Kaushik. "Dip coated 12CaO·7Al2O3 thin films through sol–gel process using metal alkoxide." Thin Solid Films 519, no. 1 (2010): 18–23. http://dx.doi.org/10.1016/j.tsf.2010.07.014.

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21

Katayama, Shingo, and Masahiro Sekine. "Fabrication of Superconducting Bi-Sr-Ca-Cu-O Oxide Films Using the Metal Alkoxide Method." MRS Proceedings 180 (1990). http://dx.doi.org/10.1557/proc-180-873.

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ABSTRACTSuperconducting films in the Bi-Sr-Ca-Cu-O system were fabricated using metal alkoxides. To make a mixed alkoxide solution into a dip-coating solution, insoluble Cu alkoxide was modified with 2-dimethylaminoethanol and insoluble Bi alkoxide was dissolved in the presence of Ca and/or Sr alkoxides. The structures of these alkoxide derivatives were studied by FT-IR, 1 H-NMR, and EXAFS. The film with Tc(zero)=115K was fabricated using the alkoxide solution with a nominal composition of Bi:Sr:Ca:Cu=2:2:3:4.

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22

Montgomery, F. C., H. H. Streckert, R. O. Harrington, J. L. Kaae, S. P. Paguio, and D. R. Wall. "Ceramic Fiber Coating by a Non-Aqueous Sol-Gel Process." MRS Proceedings 180 (1990). http://dx.doi.org/10.1557/proc-180-461.

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ABSTRACTThin coatings of Al2O3, and Y2O3, have been prepared on desized Nicalon yarn. The layers were deposited by dip coating in homogeneous, alcohol solutions of partially hydrolyzed metal alkoxides. The coating thicknesses could be controlled by multiple dipping.The uniformity of the coatings was affected by the alkoxide concentration. Solutions containing greater than 1 wt % equivalent oxide resulted in oxide bridging the void between the fibers.Transmission Electron Microscopy (TEM) studies on alumina coatings formed by dip coating 300 mesh nickel grids, have shown that either eta or gamm

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23

Della, Nelcy, and Santina Mohallem. "BaTiO3 Thin Films Prepared By Dip-Coating Process." MRS Proceedings 341 (1994). http://dx.doi.org/10.1557/proc-341-379.

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AbstractThin films of pure barium titanate have been prepared by the sol-gel process from organomettalic sols containing titanium alkoxides and barium acetate (molar ratio [Ba]/[Ti]=l). It leads to transparent, homogeneous and adherent coatings. The influence of various parameters such as chemical concentration, viscosity, withdrawal speed and temperature of densification on film thickness is described. The films were characterized by X-ray diffraction during their heat treatment. Their crystallization temperature was observed to be around 450°C. No variations in the optical properties were ob

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Cheng, Chih-Hsing, Yuhuan Xu, John D. Mackenzie, Jie Zhang, and LeRoy Eyring. "The Growth of Single Crystal-Like and Polycrystal KNbO3 Films Via Sol-Gel Process." MRS Proceedings 271 (1992). http://dx.doi.org/10.1557/proc-271-383.

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ABSTRACTTransparent and uniform thin films of crystalline KNbO3 were synthesized on different substrates such as SrTiO3, ZrO2, MgO and Pt by the dip-coating method using a double alkoxides solution. The film was epitaxially crystallized at the temperature around 750°C for 3 hours in air on SrTiO3 single crystal substrate. The structure of the films has been studied with X-ray and electron diffraction, and transmission electron microscopy.Different molar ratios of 2-ethylhexanoic acid (2EHA) to alkoxides were applied to control the hydrolysis rate of the sol-gel solution. Dense films were obtai

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Strehlow, P., H. Schmidt, and M. Birkhahn. "Characterization of Baria-Alumina-Silica Glasses and Yba2Cu3O7−x Superconducting Films Prepared by the Sol-Gel-Process." MRS Proceedings 121 (1988). http://dx.doi.org/10.1557/proc-121-791.

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ABSTRACTThe preparation of eutectics in the system BaO-Al2O3-SiO2 by the conventional technique is carried out by fusions with intermittent crushing and grinding. Hydrolysis and polycondensa-tion of alkoxides in a suitable solvent provide a simple way to obtain the homogeneous baria-alumina-silica glasses. The physical and chemical changes which occur during the gel-to-glass conversion were investigated on gel powders by thermal gravimetric analyses, differential thermal analyses, mass spectroscopy, nitrogen sorption analyses, and dilatometry.By means of the sol-gel route it is also possible t

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Hirashima, H., R. Muratake, T. Yamashita, and T. Chiba. "Densification and Crystallization Of Thin Transition Metal Oxide Coatings From Metal Alkoxides." MRS Proceedings 180 (1990). http://dx.doi.org/10.1557/proc-180-611.

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ABSTRACTMonolithic gels of V2O5, Ta2O5 , and Nb2O5 have been prepared from VO(C2H5O)3 , Ta(C2H5O)5 , and Nb(C2H5 O)5 througg hydrolysis in ethanol Solutions. The conditions for gel formation have been determined. Thin coatings of these gels, less than 100 nm in thickness, have been prepared by dip coating. Changes in the thickness, d, and refractive indices, n, have been measured by ellipsometry during drying. In the first stage of drying, d decreases and n increases rapidly. Densification of the coatings takes place due to evaporation of solvent. In the following stage, increase in d and decr

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Hirashima, Hiroshi, and Seiji Kamimura. "Structure and Physical Properties of TiO2-V2O5 Gel Coatings." MRS Proceedings 121 (1988). http://dx.doi.org/10.1557/proc-121-779.

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ABSTRACTSemiconducting V2O5 gels containing up to 30 mol% of TiO2 were prepared through simultaneous hydrolysis of alkoxides in ethanol solution. Coatings of these gels about 5 nm to 20 μm,in thickness were made by dip coating. The coatings were yellowish green and transparent. The fiber-like structure of the gels was observed by TEM. The gels were about 10 nm or less in diameter, and the diameter decreased with increasing TiO2 content. The refractive indices, n, and the thickness, d, of the coatings were determined by ellipsometry. d was approximately proportional to the square root of the pu

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Hirano, Shin-Ichi, and Kazumi Kato. "Processing of Crystalline Li(Nb, Ta)O3 Films with Preferred Orientation Through Metal Alkoxides." MRS Proceedings 155 (1989). http://dx.doi.org/10.1557/proc-155-181.

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ABSTRACTLiNbO3 and LiTaO3 are very attractive and useful materials, which have been applied to piezoelectric and electro-optic devices. The authors have synthesized the stoichiometric crystalline fine powders and films of LiNbO3 at temperatures as low as 250°C by the controlled hydrolysis of double alkoxide solutions; and this method was used to prepare Li(Nb, Ta)O3 solid solution films with and without the preferred orientation. Water used during the processing played an important role in the low-temperature crystallization and the elimination of free carbon in the films. The water for the pa

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Chandler, C. D., M. J. Hampden-Smith, and R. W. Schwartz. "Ferroelectric Thin Films Via Sol-Gel Processing of Singlesource Precursors." MRS Proceedings 310 (1993). http://dx.doi.org/10.1557/proc-310-357.

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AbstractThe use of single-source mixed metal-organic precursors specifically designed for the formation of crystalline perovskite phase mixed metal oxide powders has been investigated. Pyridine solutions of divalent metal α-hydroxycarboxylates of general empirical formula A(O2CCMe2OH)2 where A = Pb, Ca, Sr, Ba; Me = methyl, were designed to react with metal alkoxides, for example, Ti(O-i-Pr)4, with the elimination of two equivalents of alcohol to form species with fixed A:B stoichiometry of 1:1 according to the equation: A(O2CCMe2OH)2 + B(OR)4 → A(O2CCMe2O)2B(OR)2 + 2HOR. Hydrolysis of these c

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Subramanian, G., V. N. Manoharan, and D. J. PINE. "Macroporous Bulk Gels and Thin Films by Colloidal Templating of Emulsions and Latex Particles." MRS Proceedings 628 (2000). http://dx.doi.org/10.1557/proc-628-cc11.13.

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ABSTRACTWe present a new way of making macroporous materials using colloidal suspensions of ceramic nanoparticles. We start from a mondisperse emulsion of 0.5 to 3.0 μm diameter oil droplets suspended in an aqueous colloidal dispersion of 80–100 nm silica particles. Upon evaporation of the water, the silica particles form a particulate gel around the emulsion droplets. Removal of the emulsion droplets by dissolution in alcohol and subsequent drying produces a monolithic solid macroporous body. Bulk gels with volume greater than 1 cm3 could be easily produced with this method. Uniform films wit

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Quinson, Jean-Francois, Chantal Chino, Anne-Marie De Becdelievre, and Christian Guizard. "Interphase Study By Xps of Sol-Gel ZrO2 Coatings On Stainless Steel." MRS Proceedings 346 (1994). http://dx.doi.org/10.1557/proc-346-703.

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ABSTRACTZrO2 coatings were obtained by the the alkoxide route and deposited onto stainless steel using the dip coating technique. The starting solutions were prepared by mixing zirconium tetrabutoxide, isopropanol, acetylacetone. The water content for the hydrolitic reaction arose from the atmosphere moisture.Useful information for the structural organization of the zirconia/steel interphase is given by XPS analysis.It is found that during firing treatment, the main components (Fe, Cr, Ni) of the stainless steel diffuse into the ceramic coating. XPS data allow to describe the chemical composit

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Hirashima, Hiroshi, and Takao Kusaka. "Structure of Thin Sol-Gel Coatings Near The Surface of Substrates." MRS Proceedings 271 (1992). http://dx.doi.org/10.1557/proc-271-443.

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ABSTRUCTThe sol-gel method is one of the most appropriate technologies for the preparation of functional thin oxide coatings. However, few studies on the structure near the interface between sol-gel coatings and substrates have been reported. In this study, the structures of thin TiO2 gel coatings were investigated by XPS in order to elucidate the interaction between the coatings and the glass substrates. TiO2 gel coatings were prepared from Ti-alkoxide by hydrolysis and dip-coating on silica glass plates. Thickness and refractive index measurements were made by ellipsometry. Changes in Ols sp

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Atik, M., and M. A. Aegerter. "Corrosion Resistant ZrO2 Sol-Gel Coating on Stainless Steel." MRS Proceedings 271 (1992). http://dx.doi.org/10.1557/proc-271-471.

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ABSTRACTCorrosion resistant Sol-Gel ZrO2, coatings deposited by dip coating technique on 316 L stainless steel sheets have been fabricated utilizing sonocatalysed precursors sols prepared from zirconium alkoxide Zr(OC3H7)4, isopropanol, glacial acetic acid and water. Their composition varied between 0,025 to 0,9 mol/1 ZrO2. The coatings have been characterized by X-ray diffraction, IR optical reflection, ellipsometry and scanning electron microscopy. When densified under a slow heat treatment thin coatings exhibit outstanding corrosion resistance as no weight change has been observed after 24

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Bell, J. M., B. Ben-Nissan, M. Anast, et al. "Sol-Gel Deposition of Electronic Ceramic Films." MRS Proceedings 180 (1990). http://dx.doi.org/10.1557/proc-180-453.

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ABSTRACTWe describe a dip-coating method of depositing thin electronic ceramic coatings on various substrates from sol-gel solutions. The solutions we use are alkoxide-based, although the specific formulations depend on the system being deposited. We are working with two electronic ceramic systems: barium titanate on glass, and alumina, and yttrium barium copper oxide on alumina. We discuss methods used to reduce and remove processing defects such as crazing, cracking and pin-holing. We are also studying the effects of varying the processing conditions (dipping, hydrolysis and firing) on the e

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Lou, Yudan, Yuhuan Xu, and John D. Mackenzie. "Multilayer Epitaxial Ferroelectric nx(SrTiO3/PbTiO3) Thin Films Prepared By The Sol-Gel Technique." MRS Proceedings 341 (1994). http://dx.doi.org/10.1557/proc-341-367.

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AbstractMultilayer epitaxial ferroelectric PbTiO3 and SrTiO3 thin films were grown alternatively on single crystal SrTiO3 (001) substrate by the sol-gel technique in this study. Lead titanium double metal alkoxide and strontium titanium double metal alkoxide were used for dip coating. By controlling the dip coating speed and the concentration of sol-gel solution, different thickness of films was obtained. The average thickness of each PbTiO3 or SrTiO3 layer was 120 Å which was measured by SEM method. By using XRD the structure of the epitaxial multilayer films was examined. The epitaxial PbTiO

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Suzuki, Hisao, Hajime Saito, and Hiroaki Hayashl. "Properties of ZrO2, Gels Prepared by Controlled Chemical Modification Method of Alkoxide." MRS Proceedings 271 (1992). http://dx.doi.org/10.1557/proc-271-83.

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ABSTRACTPolymeric ZrO2 gels were prepared by the controlled chemical modification method (CCM method) of zirconium-n-propoxide. In this method, the steric hindrance by alkoxide-acetic acid chelation could be used to control the hydrolysis and condensation reaction of the zirconium alkoxide if the amount of hydrolysis water was limited. As a result, polycondensaticn occurred uniformly in the solution, forming a linear zirconoxane polymer. When the solvent evaporated, the zirconoxane polymer crosslinked with each other and formed polymeric ZrO2, gels, which were monolithic and transparent. These

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Hirashima, Hiroshi, Yusuke Obu, Takayuki Nagai, and Hiroaki Imai. "Preparation of Sol-Gel Coatings by Electrophoretic Deposition." MRS Proceedings 346 (1994). http://dx.doi.org/10.1557/proc-346-95.

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ABSTRACTThin films of ZrO2 and lead zirconate-titanate, PZT, about 100 to 1000 nm in thickness, were prepared by electrophoretic deposition from transparent sols obtained by hydrolysis of metal alkoxides. Stainless steel plates and Pt-coated glass plates were used as substrates/electrodes. The applied field was up to 20 V/cm. The refractive indices of as dried films were higher than those of dip-coated films. High temperature oxidation of stainless steel plates was suppressed by the ZrO2 coatings. Uniformity of the chemical composition of the as-dried PZT films, determined by Auger electron sp

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Taiahashi, Yasutaia, Hideo Hayashi, and Yutaka Ohya. "Application of Ethanolamine Method FOB the Preparation of Indium Oxide-Based Sols And Films." MRS Proceedings 271 (1992). http://dx.doi.org/10.1557/proc-271-401.

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ABSTRACTIt is found that ethanolamine method, recently developed by us, is very useful to form stable, concentrated (0.4–0.5M) indium oxide-based sols from which very uniform, transparent In2O3 and ITO films are obtained by dip-coating. Indium isopropoxide and acetate can be used as the starting materials. The optical and electrical properties of these films were examined. A transparent ITO film with the highest conductivity (3030 S/cm, after annealing at 0.05 torr-600°C for 60 min) was obtained from the acetate at 600°C. The films from the alkoxide had lower conductivities probably due to the

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39

Kozuka, H., M. Kajimura, K. Katayama, Y. Isota та T. Hirano. "Deposition of Crack-Free BaTiO3 and Pb(Zr,Ti)O3 Films Over 1 μm Thick Via Single-Step Dip-Coating". MRS Proceedings 606 (1999). http://dx.doi.org/10.1557/proc-606-187.

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AbstractBaTiO3 and PZT films were prepared by single-step dip-coating from alkoxide-acetate solutions containing polyvinylpyrrolidone (PVP). Crack-free BaTiO3 and PZT films over 1 μm in thickness were obtained via single-step deposition. Stepwise heating of the gel films was found to improve densification of BaTiO3 films, reducing the thickness and increasing the optical transmittance, which was not, however, the case with PZT films, where the stepwise heating rather induced crack formation, leading to degraded transmittance. Residual stress was evaluated on spin-coating BaTiO3 films by measur

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Joshi, Vikram, Grace K. Goo, and Martha L. Mecartney. "Microstructural Variations in Sol-Gel Processed Lithium Niobate thin Films." MRS Proceedings 271 (1992). http://dx.doi.org/10.1557/proc-271-377.

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ABSTRACTLiNbO3 thin films were deposited by dip coating Li-Nb alkoxide solutions onto silicate glass substrates and single crystal sapphire substrates. Microstructural characterization using transmission electron microscopy (TEM) showed significant differences in film microstructures dependent on the initial solution chemistry. Fully crystalline films could be obtained after heat treatments at 400°C in air. The grain size and porosity were dependent on the amount of water of hydrolysis in the alkoxide sol. The higher the water content, the larger the grain size and porosity. Crystallization st

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Dulian, Piotr, Jan Zajic, and Witold Żukowski. "Effect of titanium source and sol-gel TiO2 thin film formation parameters on its morphology and photocatalytic activity." Materials Science-Poland, November 18, 2020. http://dx.doi.org/10.2478/msp-2020-0056.

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AbstractTiO2 thin films with different surface structure have been prepared from alkoxide solutions by the sol-gel method using different cationic precursors and heat treatment techniques. The effect of using titanium isopropoxide as well as titanium butoxide as a titanium source on the surface structure and photocatalytic activity of the resultant thin films was studied. Significant differences in the rate of hydrolysis and condensation reactions during the sol-gel synthesis were observed for these titanium precursors. This had a direct influence on the morphology of the as-prepared TiO2 film

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42

Kenzer, D. S., M. R. Teepe, G. A. Moore та G. Kordas. "Evaluation Of YBa2Cu3O7-δ Sol-Gel Derived Films On Sapphire Substrates Produced From Different Cu(Ii) Alkoxide Groups." MRS Proceedings 180 (1990). http://dx.doi.org/10.1557/proc-180-947.

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ABSTRACTYttrium methoxyethoxide, barium methoxyethoxide and various copper(II) alkoxide groups were used as precursors for the formation of YBa2Cu3O7-δ stable sols in a 2- methoxyethanol / methyl ethyl ketone / toluene / diisopropyl ketone solvent system. Sol fractal dimensions were varied with the sol concentration and with the addition of pyridine. Strong correlation was found between the wettability and the fractal dimensions of the various precursors as determined by contact angle measurements. YBa2Cu3O7-δ thin films were deposited on sapphire substrates using a dip-coating technique. The

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TAKAHASHI, Y., and Y. WADA. "ChemInform Abstract: Dip-Coating of Sb-Doped SnO2 Films by Ethanolamine-Alkoxide Method." ChemInform 21, no. 14 (1990). http://dx.doi.org/10.1002/chin.199014348.

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Chirayil, T. G., M. Paranthaman, D. B. Beach, et al. "Epitaxial Growth of Yb2O3 Buffer Layers on Biaxially Textured-Ni (100) Substrates by Sol-Gel Process." MRS Proceedings 574 (1999). http://dx.doi.org/10.1557/proc-574-51.

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AbstractIn order to develop an alternative buffer layer architecture using the sol-gel process to produce YBCO (YBa2Cu3O7-δ) coated conductors, Yb2O3 has been chosen as the candidate material. Buffer layers of Yb2O3 were epitaxially grown on biaxially textured-Ni (100) substrates by the sol gel process for the first time. The Yb2O3 precursor solution was prepared from an alkoxide sol-gel route in 2-methoxyethanol and was deposited on textured-Ni (100) substrates by either spin coating or dip coating methods. The amorphous film was then processed at 1160°C under flowing (96%)Ar/H2(4%) gas mixtu

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Beier, W., and G. H. Frischat. "Chemical Durability of Sio2-Tio2-Zro2, Glass Films Made from Alkoxide Solutions." MRS Proceedings 121 (1988). http://dx.doi.org/10.1557/proc-121-817.

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ABSTRACTWater, ethanol, and hydrochloric acid containing solutions of silicon ethoxide, titanium butoxide, and zirconium pro-poxide have been developed which show a constant viscosity for some days. The influence of formamide additions on the viscosity behavior was studied too.Glass slides have been dip coated in the solutions, dried in ethanol containing atmosphere, and baked at 300 ° C. Multilayered films were obtained by repeating this procedure. After a final baking at 500 ° C, crack-free transparent SiO2-TiO2-ZrO2 glassy films have been obtained. Compared to the substrate, the films of th

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