Electrophoretic Deposition in Production of Ceramic Matrix Composites

Novak, Saša; König, Katja; Iveković, Aljaž

doi:10.1007/978-1-4419-9730-2_8

Cited by 3 publications

(3 citation statements)

References 42 publications

(65 reference statements)

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“…On the other hand, the second approach used simultaneous infiltration of a variety of fiber mats, exhibiting a homogeneous green microstructure with a high particle packing density, allowing for the fabrication of thick components (>10 mm thick) [193]. The EPD technique has been used in a variety of ceramic composite systems during the decades, such as laminated composites [194], composite coatings [195], whisker-reinforced composites [196], and functionally graded materials [197]. The processing can be grouped in a three-step series, which every CMC material goes through to achieve the needed mechanical, thermal, and physical properties [184].…”

Section: Electrophoretic Deposition Of a Ceramic Powdermentioning

confidence: 99%

Ceramic Matrix Composites for Aero Engine Applications—A Review

Karadimas

Salonitis

2023

Applied Sciences

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Ceramic matrix materials have attracted great attention from researchers and industry due to their material properties. When used in engineering systems, and especially in aero-engine applications, they can result in reduced weight, higher temperature capability, and/or reduced cooling needs, each of which increases efficiency. This is where high-temperature ceramics have made considerable progress, and ceramic matrix composites (CMCs) are in the foreground. CMCs are classified into non-oxide and oxide-based ones. Both families have material types that have a high potential for use in high-temperature propulsion applications. The oxide materials discussed will focus on alumina and aluminosilicate/mullite base material families, whereas for non-oxides, carbon, silicon carbide, titanium carbide, and tungsten carbide CMC material families will be discussed and analyzed. Typical oxide-based ones are composed of an oxide fiber and oxide matrix (Ox-Ox). Some of the most common oxide subcategories are alumina, beryllia, ceria, and zirconia ceramics. On the other hand, the largest number of non-oxides are technical ceramics that are classified as inorganic, non-metallic materials. The most well-known non-oxide subcategories are carbides, borides, nitrides, and silicides. These matrix composites are used, for example, in combustion liners of gas turbine engines and exhaust nozzles. Until now, a thorough study on the available oxide and non-oxide-based CMCs for such applications has not been presented. This paper will focus on assessing a literature survey of the available oxide and non-oxide ceramic matrix composite materials in terms of mechanical and thermal properties, as well as the classification and fabrication methods of those CMCs. The available manufacturing and fabrication processes are reviewed and compared. Finally, the paper presents a research and development roadmap for increasing the maturity of these materials allowing for the wider adoption of aero-engine applications.

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Section: Electrophoretic Deposition Of a Ceramic Powdermentioning

confidence: 99%

Ceramic Matrix Composites for Aero Engine Applications—A Review

Karadimas

Salonitis

2023

Applied Sciences

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“…Deposition of nano-sized and sub-micron particles of SiC have been compared. 29 While a thick, dense deposit was prepared with submicron (500 nm) powders, nanosized powders (50 nm) were not deposited under the same conditions; no explanation was given. 29 In this work, (Ba 0.97 Eu 0.03 ) 2 SiO 4 was prepared by two methods, yielding either micron-(∼5 μm) or nano-sized (∼320 nm) particles.…”

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Electrophoretic Deposition of Nano- and Micron-Sized Ba₂SiO₄:Eu²⁺Phosphor Particles

Choi

Anc

Piquette

et al. 2014

J. Electrochem. Soc.

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Electrophoretic deposition (EPD) is a technique to deposit charged particles from a stable suspension under the force of an applied electric field. Although nanoparticles of a variety of materials have been coated by EPD, there have been few direct comparisons of EPD of nano-and micron-sized particles of the same material. The objective of this study is to compare EPD of nano-, nano core/SiO 2 shell and micron-sized (Ba 0.97 Eu 0.03 ) 2 SiO 4 phosphor particles for application in a near-UV LED-based light source. EPD from an amyl alcohol bath was able to produce uniform films for all particle sizes, whereas uniform films were produced only of micron-sized particles in an isopropyl alcohol bath. Electrophoretic deposition (EPD) is a useful method to fabricate particulate films.1 The process is simple, scalable and often costeffective. First, the particles are charged in a suspension, subsequently they are transported to an electrode under an electric field, and finally the particles adhere to the substrate. Each step has been systematically investigated in previous work in a bath of isopropyl alcohol (IPA) with nitrate salts, by studying the effects of the suspension medium chemistry on the zeta potential of the particles and the formation of the adhesive agents. 2-4For producing white solid-state lighting devices, EPD has been used to deposit micron-sized phosphors placed above an LED. Y 3 Al 5 O 12 :Ce 3+ phosphor was deposited onto a flexible indium tin oxide (ITO)-coated polymer substrate on top of blue light-emitting diodes (LEDs).5 In other work, both layered and blended phosphor films using Eu-activated Ca-α-SiAlON, β-SiAlON and CaAlSiN 3 (yellow-, green-and red-emitting, respectively) were deposited on an ITO-coated substrate that was placed on top of a blue-emitting LED. 6 Recently, EPD was used to deposit both layered and blended phosphor films that generated white light using Eu 2+ -activated Sr 2-x Ca x Si 5 N 8 , Ba 2 SiO 4 , LiCaPO 4 , (Sr 0.75 Ba 0.25 ) 2 SiO 4 and (Sr 0.5 Ba 0.5 ) 3 SiO 5 (red-, green-, blue-, yellow-and orange-emitting, respectively) with near-UV LEDs. 7,8 The phosphor films must be ∼10 to 40 μm thick for full conversion of the UV emission from the LED. Also the film thickness must be very uniform. It was determined that the deposited film quality was poor when a higher applied voltage was used. 9 This has led to the development of the EPD processes using lower voltages (∼80 V) and longer deposition times up to 30 min 7,8 than previous EPD processes. [1][2][3][4] Typically, micron-sized phosphors are being used in solid-state lighting. However, the micron-sized phosphors have higher optical scattering losses due to an increased optical path length and increased number of reflections or transmissions at interfaces. 10 The nano-phosphors (<300 nm) with comparable quantum efficiency to typical micron-sized phosphors may be a mean to reduce the losses and improve efficiency of the white UV-based LEDs.11 But it is well known that the emission intensity of the phosphor decreases as the...

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SiC–CNT Composite Prepared by Electrophoretic Codeposition and the Polymer Infiltration and Pyrolysis Process

Novak

Iveković

2012

J. Phys. Chem. B

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The paper reports on the successful anodic codeposition of submicrometer SiC powder and multiwalled carbon nanotubes from aqueous suspensions to form SiC-CNT composites. On the basis of the comprehensive analysis of the aqueous suspensions with different pHs, solids contents, and CNT contents, optimal conditions for deposition were determined. Besides having the necessary high absolute value of the ζ-potential, the suspensions that resulted in firm deposits were characterized by limited conductivity (<1 mS/cm). Lowering of suspension conductivity was achieved either by dilution of the suspension or by dialysis of the as-received CNT suspension with high intrinsic conductivity. Selected SiC-CNT deposits were further densified by use of the polymer infiltration and pyrolysis process.

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Electrophoretic Deposition in Production of Ceramic Matrix Composites

Cited by 3 publications

References 42 publications

Ceramic Matrix Composites for Aero Engine Applications—A Review

Ceramic Matrix Composites for Aero Engine Applications—A Review

Electrophoretic Deposition of Nano- and Micron-Sized Ba₂SiO₄:Eu²⁺Phosphor Particles

SiC–CNT Composite Prepared by Electrophoretic Codeposition and the Polymer Infiltration and Pyrolysis Process

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Electrophoretic Deposition in Production of Ceramic Matrix Composites

Cited by 3 publications

References 42 publications

Ceramic Matrix Composites for Aero Engine Applications—A Review

Ceramic Matrix Composites for Aero Engine Applications—A Review

Electrophoretic Deposition of Nano- and Micron-Sized Ba2SiO4:Eu2+Phosphor Particles

SiC–CNT Composite Prepared by Electrophoretic Codeposition and the Polymer Infiltration and Pyrolysis Process

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Electrophoretic Deposition of Nano- and Micron-Sized Ba₂SiO₄:Eu²⁺Phosphor Particles