Phonon Participation in Thermodynamics and Superconductive Properties of Thin Ceramic Films

There is increasing interest in composites containing zirconia because of their high strength, fracture toughness, and its great influence on the chemical durability in glass. For the zirconia-silica system, monolithic glasses, fibers and coatings have been obtained. There is currently a great interest in designing zirconia-toughened alumina including exploration of the processing methods and the toughening mechanism.The possibility of forming nanocrystal composites by a phase separation method has been investigated in three systems: zirconia-alumina, zirconia-silica and zirconia-titania using HREM. The morphological observations initially suggest that the formation of nanocrystal composites by a phase separation method is possible in the zirconia-alumina and zirconia-silica systems, but impossible in the zirconia-titania system. The separation-produced grain size in silica-zirconia system is around 5 nm and is more uniform than that in the alumina-zirconia system in which the sizes of the small polyhedron grains are around 10 nm. In the titania-zirconia system, there is no obvious separation as was observed in die alumina-zirconia and silica-zirconia system.

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Piezoelectric Thick Film Deposition via Powder/Granule Spray in Vacuum: A Review

Actuators ◽

10.3390/act9030059 ◽

2020 ◽

Vol 9 (3) ◽

pp. 59

Author(s):

Deepak Rajaram Patil ◽

Venkateswarlu Annapureddy ◽

J. Kaarthik ◽

Atul Thakre ◽

Jun Akedo ◽

...

Keyword(s):

Thick Film ◽

Thick Films ◽

Cost Effective ◽

Aerosol Deposition ◽

Ceramic Coatings ◽

Film Deposition ◽

Energy Harvesters ◽

Ceramic Films ◽

Dense Ceramic ◽

Processing Techniques

Conventional thin-film processing techniques remain inadequate for obtaining superior dense ceramic thick films. The incompatibility of ceramic films prepared via other methods, such as screen printing, spin coating, and sputtering, is a major obstacle in the fabrication of thick film-based ceramic electronic components. The granule spray in vacuum (GSV) processes and aerosol deposition (AD) are important coating approaches for forming dense ceramic thick films featuring nanoscale crystallite structures at room temperature, which offer excellent material properties and facilitate cost-effective production. AD ceramic coatings require the acceleration of solid-state submicron ceramic particles via gas streams with a velocity of a few hundred meters per second, which are then wedged onto a substrate. This process is economical and particularly useful for the fabrication of piezoelectric thick film-based microactuators, energy harvesters, sensors, and optoelectronic devices. More recently, the GSV technique was improved to achieve more uniform and homogeneous film deposition after AD. This review article presents a detailed overview of the AD and GSV processes for piezoelectric thick films in terms of recent scientific and technological applications.

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Laser Radiation as a Tool to Generate Well Defined Thin Ceramic Films for Applications

Materials Science Forum ◽

10.4028/www.scientific.net/msf.301.287 ◽

1999 ◽

Vol 301 ◽

pp. 287-0

Author(s):

E.W. Kreutz ◽

J. Gottmann ◽

A. Husmann ◽

M. Sommer

Keyword(s):

Laser Radiation ◽

Ceramic Films

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Erratum to “Preparation and properties of ZnO-based ceramic films for low-voltage varistors by novel sol–gel process”

Materials Science and Engineering B ◽

10.1016/s0921-5107(02)00144-7 ◽

2002 ◽

Vol 96 (1) ◽

pp. 69

Author(s):

Huang Yanqiu ◽

Liu Meidong ◽

Zeng Yike ◽

Li Churong ◽

Xia Donglin ◽

...

Keyword(s):

Low Voltage ◽

Sol Gel ◽

Ceramic Films ◽

Sol Gel Process

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Numerical Simulation of the Impact between the Front-End-Coated Projectile and the Substrate Coated by Ceramic Film

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.2198 ◽

2012 ◽

Vol 226-228 ◽

pp. 2198-2202

Author(s):

Zhi Lin Wu ◽

Xiao Mei Wang

Keyword(s):

Normal Stress ◽

Tangential Stress ◽

Stress Wave ◽

Acoustic Impedance ◽

Axial Direction ◽

Interfacial Stress ◽

Ceramic Film ◽

Front End ◽

Ceramic Films ◽

The Impact

The propagation of the stress wave in axial direction during the impact between the front-end-coated projectile and the substrate coated by ceramic films is described by the stress wave theorem. The impact process is numerically simulated by ANSYS/LS-DYNA, where the shell unit is used for precision. The effects of thickness of the front-end coating on the interfacial stress are discussed in detail. Dependence of different ceramic films are also considered. Simulation results show that interfacial normal stress is much greater than tangential stress. The interfacial normal stress is greatest when the thickness of the projectile coating is 0.2 mm. The interfacial tangential stress increases slightly as the thickness of coating increases. Similar stress history in the interface occurs when the acoustic impedance of the films are close. Greater acoustic impedance results in smaller stress.

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Far infrared and Raman response in tetragonal PZT ceramic films

Boletín de la Sociedad Española de Cerámica y Vidrio ◽

10.1016/j.bsecv.2015.11.003 ◽

2015 ◽

Vol 54 (6) ◽

pp. 219-224 ◽

Cited By ~ 4

Author(s):

Elena Buixaderas ◽

Christelle Kadlec ◽

Premysl Vaněk ◽

Silvo Drnovšek ◽

Hana Uršič ◽

...

Keyword(s):

Far Infrared ◽

Ceramic Films ◽

Raman Response ◽

Pzt Ceramic

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Electrophoretic nanotechnology of ceramic films

Advances in Applied Ceramics ◽

10.1179/1743676111y.0000000070 ◽

2012 ◽

Vol 111 (5-6) ◽

pp. 345-350 ◽

Cited By ~ 10

Author(s):

M S Ata ◽

I Zhitomirsky

Keyword(s):

Ceramic Films

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Search for Ion Induced Mixing in Ceramic-Ceramic Systems

MRS Proceedings ◽

10.1557/proc-396-101 ◽

1995 ◽

Vol 396 ◽

Author(s):

K.R. Padmanabhan

Keyword(s):

Auger Electron Spectroscopy ◽

Electron Spectroscopy ◽

Auger Electron ◽

Ion Beam ◽

Epitaxial Films ◽

Ion Beam Mixing ◽

Ceramic Substrates ◽

Ion Channeling ◽

Ceramic Films ◽

Dose Dependent

AbstractThin sputtered ceramic films deposited on ceramic substrates were subjected to either Kr+ or Xe+ ion bombardment for ion beam mixing studies in ceramic-ceramic systems. The amount of mixing if any was evaluated from Rutherford backscattering and Auger electron spectroscopy. In some instances ceramic films were deposited on epitaxial films or single crystal substrates for ion channeling analysis. No significant mixing was observed in any of the systems with ZrC. However, analysis of the interface in Si3N4/ SiC system indicates appreciable mixing and ion beam induced damage to the substrate. The mixing appears to be dose dependent for heavier ions.

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