Deposition and characterization of nanocrystalline tetragonal zirconia films using electrostatic spray deposition

Nguyen, Tai; Djurado, Elisabeth

doi:10.1016/s0167-2738(00)00795-5

Cited by 71 publications

(36 citation statements)

References 7 publications

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“…A further review of thin-film fabrication techniques, especially for stabilized zirconia, including spray pyrolysis, has been presented in a study by Will et al [8]. Nguyen and Djurado [9] have reported using the ESD technique to prepare tetragonal zirconia films. A detailed study of the various ESD parameters involved in deposition of YSZ has been presented in further sections of this work.…”

Section: Electrostatic Spray Depositionmentioning

confidence: 99%

Fabrication of YSZ electrolyte using electrostatic spray deposition (ESD):I ? a comprehensive parametric study

et al. 2005

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Electrostatic spray deposition (ESD) was applied to fabricate a thin-layer ( e 3 lm thickness) yttria-stabilized zirconia (YSZ) electrolyte on a solid oxide fuel cell (SOFC) anode substrate consisting of nickel-YSZ cermet. Reducing the thickness of a state-of-the-art electrolyte, and thereby reducing the cell internal IR drop, is a promising strategy to make the intermediate temperature SOFC (ITSOFC) operating at 600-800°C possible. About 8 mol% YSZ colloidal solution in ethanol was sprayed onto the substrate anode surface at 250-300°C by ESD. After sintering the deposited layer at 1250-1400°C for 1-6 h, the cathode layer, consisting of lanthanum strontium manganate (LSM), was sprayed or brush coated onto the electrolyte layer. Performance tests on the cell were carried out at 800°C to evaluate the electrolyte layer formed by ESD. With a 97% H 2 /3% H 2 O mixture and air as fuel and oxidant gas, respectively, open circuit voltage (OCV) was found to be close to the theoretical value.

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Section: Electrostatic Spray Depositionmentioning

confidence: 99%

Fabrication of YSZ electrolyte using electrostatic spray deposition (ESD):I ? a comprehensive parametric study

et al. 2005

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“…They have high chemical stability, hardness among those of steel and other alloys [1], dielectric constant among the highest for metallic oxides [2], low absorption of light and high index of refraction [3]. These fi lms have been exploited for a broad range of applications from thermal-barrier coatings [4], wear resistance coatings [5], protective coating for optical mirrors and fi lters [3], high temperature fuel cells [6], oxygen detectors [6] to catalyst supports [7]. The objective of our present work is the development of biocompatible transparent coating for biomedical and tissue engineering applications [8,9].…”

Section: Introductionmentioning

confidence: 99%

Thermal stability of nanostructurally stabilized zirconium oxide

Namavar¹,

Wang

Cheung

et al. 2007

Nanotechnology

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Nanostructurally stabilized zirconium oxide (NSZ) hard transparent films were produced without chemical stabilizers by the ion beam assisted deposition technique (IBAD). A transmission electron microscopy study of the samples produced below 150 °C revealed that these films are composed of zirconium oxide (ZrO2) nanocrystallites of diameters 7.5 ± 2.3 nm. X-ray and selected-area electron diffraction studies suggested that the as-deposited films are consistent with cubic phase ZrO2. Rutherford backscattering spectroscopy (RBS) indicated the formation of stoichiometric ZrO2. The phase identity of these optically transparent NSZ films was in agreement with cubic ZrO2, as indicated by the matching elastic modulus values from the calculated results for pure cubic zirconium oxide and results of nanoindentation measurements. Upon annealing in air for 1 h, these NSZ films were found to retain most of their room temperature deposited cubic phase x-ray diffraction signature up to 850 °C. Size effect and vacancy stabilization mechanisms and the IBAD technique are discussed to explain the present results.

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“…There are few works on the formation of stable thin films and nanoparticles from pure (undoped) zirconia of tetragonal and cubic structure [3][4][5][6][7][8][9][10][11]. It has been shown [11] experimentally and theoretically that the tetragonal-cubic transition takes place (at low temperatures) at a particle size of about two nanometers.…”

Section: Introductionmentioning

confidence: 99%