Laser surface modification of porous yttria stabilized
Here we present a new combined freeze-casting and laser processing method for the design of yttria-stabilized zirconia (YSZ) based thermal-barrier coatings. YSZ ceramics with
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(PDF) Fabrication of Porous Yttria-Stabilized Zirconias
To fabricate a thick porous yttria-stabilized zirconia without cracking and warping a method for the simultaneous control of the porosity and shrinkage was designed. As a pore former a potato
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Fabrication and Performance of La0.6Sr0.4Co0.2Fe0.8O3−δ
The three layers with porous yttria-stabilized zirconia (YSZ) backbone/dense YSZ/porous NiO–YSZ were fabricated by tape-casting process respectively then laminated together and co-fired at 1300 °C for 5 h.
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Design Fabrication and Characterization of Porous Yttria
Here the authors put the emphasis on porous yttria‐stabilized zirconia (YSZ) ceramics for hot gas filtration owing to their high thermodynamic stability and toughness. The authors design and fabricate porous YSZ ceramics using a pore‐forming inclusion technique where a polymeric pore former is mixed and compacted with YSZ powder.
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A process for the preparation of plasma sprayable yttria
A process for the preparation of plasma sprayable yttria stabilized A process for the preparation of plasma sprayable yttria stabilized zirconia and yttria stabilized zirconia powder produced thereof Singanahalli Thippareddy Aruna Narayanaswamy Balaji Karaikudi Sankaranarayana Rajam Patent Nos. US . IN 284897
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Image analysis of porous yttria-stabilized zirconia
Image analysis of porous yttria-stabilized zirconia structure for a lanthanum ferrite-impregnated solid oxide fuel cell electrode. Significance . Lanthanum-based perovskites are widely used cathode materials. Normally very high sintering temperature is usually used for densification of the YSZ.
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A process for the preparation of plasma sprayable yttria
A process for the preparation of plasma sprayable yttria stabilized A process for the preparation of plasma sprayable yttria stabilized zirconia and yttria stabilized zirconia powder produced thereof Singanahalli Thippareddy Aruna Narayanaswamy Balaji Karaikudi Sankaranarayana Rajam Patent Nos. US . IN 284897
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Processing and Characterization of Yttria-Stabilized
In this work ceramic foams of 3 and 8 mol yttria-stabilized zirconia (3YSZ and 8YSZ) were manufactured by the replication method using polystyrene-polyurethane foams with pore sizes in the 7–10 ppi range. A second coating was carried out on presintered foams in order to thicken struts and hinder microstructural defects. The produced ceramic foams were structurally and thermomechanically
Get PriceMicrostructure and Phase Composition of Yttria-Stabilized
For the first time dense nanofibers of yttria-stabilized tetragonal zirconia with diameter of ca. 140 nm were prepared by calcination of electrospun zirconium acetylacetonate/yttrium nitrate/polyacrylonitrile fibers at 1100–1300 °C. Ceramic filaments were characterized by scanning electron microscopy X-ray diffractometry and nitrogen adsorption.
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"Fabrication of Highly Porous Yttria-Stabilized Zirconia
Porous Y2O3-stabilized ZrO2 (YSZ) samples were synthesized by preparing NiO/YSZ composites by tape casting and calcining at 1800 K reducing the NiO to nickel in H2 at 973 K and finally leaching the nickel out of the structure with 2.2M HNO3 at 353 K. Porous YSZ was prepared from NiO/YSZ composites containing 0 20 40 and 50 wt NiO. Complete removal of the nickel was demonstrated
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Yttria Partially Stabilized Zirconia CoorsTek
yttria partially stabilized zirconia overview. Yttria Partially Stabilized Zirconia (YTZP) components are very strong and can be employed in extreme environments. This material excels in machinery and mechanical applications requiring corrosion and insulative properties matched with fatigue resistance and impact loading excellence.
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Composite cathode based on yttria stabilized bismuth
Composites consisting of silver and yttria stabilized bismuth oxide YSB have been investigated as cathodes for low-temperature honeycomb solid oxide fuel cells with stabilized zirconia as electrolytes. At 600°C the interfacial polarization resistances of a porous YSB–Ag cathode is
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Robocasting of dense yttria-stabilized zirconia structures
The sintered partially stabilized YSZ solid and porous mesh samples (porosity of macro-pores >45 ) exhibited hardness up to 13.29 GPa and flexural strengths up to 242.8 ± 11.4 and 57.3 ± 5.2 MPa respectively. The aqueous-based ceramic suspension was also demonstrated to be suitable for the fabrication of large YSZ parts with good repeatability.
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Robocasting of dense yttria-stabilized zirconia structures
The sintered partially stabilized YSZ solid and porous mesh samples (porosity of macro-pores >45 ) exhibited hardness up to 13.29 GPa and flexural strengths up to 242.8 ± 11.4 and 57.3 ± 5.2 MPa respectively. The aqueous-based ceramic suspension was also demonstrated to be suitable for the fabrication of large YSZ parts with good repeatability.
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Porous Yttria-Stabilized Zirconia Microstructures for SOFC
Solid oxide fuel cells (SOFCs) are electrochemical devices that convert fuels such as hydrogen and natural gas to electricity at high efficiencies e.g. up to 90 . SOFCs are emerging as a key technology for energy production that also minimize greenhouse gas emissions compared to conventional thermal power generation. SOFCs which are normally based on nickel-yttria stabilized zirconia
Get PriceYttriastabilized zirconia thin films deposited by
Yttriastabilized zirconia thin films deposited by pulsed-laser deposition and magnetron sputtering H. Hidalgo a E. Reguzinaa E. Millona A-L. Thomanna J. Mathiasa C. Boulmer-Leborgnea T. Sauvageb P. Braulta a GREMI UMR CNRS 6606 Université d Orléans 14 rue d Issoudun 45067 Orléans France b CEMHTI UPR CNRS 3079 3A rue de la Férollerie 45071 Orléans France
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Fabrication of gradient porous LSM cathode by optimizing
yttria-stabilized zirconia (TZ8Y) powders from Tosoh Co. into pel-lets of 2.5cm in diameter and thickness of about 1mm by a hydrostatic press (Buehler Ltd.). To make a dense electrolyte sub-strate the pellets were sintered at the heating rate of 4 C/min up to1400 Catairatmosphere heldfor30minandthencooleddown to room temperature. Fig. 2.
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Yttria Oxide Ceramic CoorsTek
yttria overview. Yttria (yttrium oxide Y 2 O 3) is a rare-earth ceramic which exhibits both exceptional plasma resistance and an aptitude for high-temperature applications.Yttria is often used to stabilize other ceramic compositions like zirconia. CoorsTek Exyria™ yttria can be formed into both solid parts and coatings for parts requiring exceptional corrosion resistance.
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Microstructure and Phase Composition of Yttria-Stabilized
For the first time dense nanofibers of yttria-stabilized tetragonal zirconia with diameter of ca. 140 nm were prepared by calcination of electrospun zirconium acetylacetonate/yttrium nitrate/polyacrylonitrile fibers at 1100–1300 °C. Ceramic filaments were characterized by scanning electron microscopy X-ray diffractometry and nitrogen adsorption.
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Tailoring the protonic conductivity of porous yttria
Abstract Porous yttria-stabilized zirconia (YSZ) thin films were prepared by pulsed laser deposition to investigate the influence of specific surface area on the electronic oxygen
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"Fabrication of Highly Porous Yttria-Stabilized Zirconia
Porous Y2O3-stabilized ZrO2 (YSZ) samples were synthesized by preparing NiO/YSZ composites by tape casting and calcining at 1800 K reducing the NiO to nickel in H2 at 973 K and finally leaching the nickel out of the structure with 2.2M HNO3 at 353 K. Porous YSZ was prepared from NiO/YSZ composites containing 0 20 40 and 50 wt NiO. Complete removal of the nickel was demonstrated
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"Fabrication of Highly Porous Yttria-Stabilized Zirconia
Dec 03 2004 · Porous Y2O3-stabilized ZrO2 (YSZ) samples were synthesized by preparing NiO/YSZ composites by tape casting and calcining at 1800 K reducing the NiO to nickel in H2 at 973 K and finally leaching the nickel out of the structure with 2.2M HNO3 at 353 K. Porous YSZ was prepared from NiO/YSZ composites containing 0 20 40 and 50 wt NiO. Complete removal of the nickel was
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Microstructure and Phase Composition of Yttria-Stabilized
For the first time dense nanofibers of yttria-stabilized tetragonal zirconia with diameter of ca. 140 nm were prepared by calcination of electrospun zirconium acetylacetonate/yttrium nitrate/polyacrylonitrile fibers at 1100–1300 °C. Ceramic filaments were characterized by scanning electron microscopy X-ray diffractometry and nitrogen adsorption.
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Fabrication of functionally-graded yttria-stabilized
Mar 01 2019 · Abstract This article presents the design fabrication and characterization of functionally-graded yttria-stabilized zirconia (YSZ) coatings by using a novel dual-beam pulsed laser deposition method based on a 355 nm ps laser. Graded coatings were fabricated by mixing YSZ and the substrate material (stainless steel).
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High performance low-temperature solid oxide fuel cells
We report the design and the fabrication of a sandwich-structured thin-film composite electrolyte for low-temperature solid oxide fuel cells supported by a nanoporous anodized aluminum oxide (AAO) substrate. We adopt an extremely thin (25 nm) atomic-layer-deposited (ALD) yttria-stabilized zirconia (YSZ) laye
Get PriceTailoring the protonic conductivity of porous yttria
Abstract Porous yttria-stabilized zirconia (YSZ) thin films were prepared by pulsed laser deposition to investigate the influence of specific surface area on the electronic oxygen
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Design and Fabrication of Porous Yttria-Stabilized
Hot gas filtration has received growing attention in a variety of applications over the past few years. Yttria-stabilized zirconia (YSZ) is a promising candidate for such an application. In this study we fabricated disk-type porous YSZ filters using the pore forming procedure in which poly methyl methacrylate (PMMA) was used as the pore-forming agent.
Get PricePorous Yttria-Stabilized Zirconia Microstructures for SOFC
Porous Yttria-Stabilized Zirconia Microstructures for SOFC Anode Fabrication. Solid oxide fuel cells (SOFCs) are electrochemical devices that convert fuels such as hydrogen and natural gas to electricity at high efficiencies e.g. up to 90 . SOFCs are emerging as a key technology for energy production that also minimize greenhouse gas
Get Price(PDF) Factors Affecting the Porosity and Mechanical
Factors Affecting the Porosity and Mechanical Properties of Porous Ceramic Composite Materials. Mohammed Sabah. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.
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