Formation of Alumina Insulation Films for a CRT Heater by Constant Current Electrophoretic Deposition Method

Narisawa, Toshiaki; Arato, Toshiaki; Koganezawa, Nobuyuki; Shibata, M.; Nonaka, Yasuhiko

doi:10.2109/jcersj.103.54

Cited by 11 publications

(5 citation statements)

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“…1 a plot according to Eq. [7] is shown for Mg(NO 3 ) 2 in IPA. The data can be fit to a straight line, which indicates that only one dissociation constant is relevant in the concentration regime under investigation.…”

Section: Suspension Propertiesmentioning

confidence: 99%

“…Some of the attractive features are its ability to provide uniform coatings on objects with complicated three-dimensional shape and its selectivity in only coating conductive parts of an object. Examples of its use can be found in the processing of phosphor screens (1)(2)(3)(4)(5), fabrication of high-T c super-conducting films (6), (layered) ceramics (6), and filaments (7,8) for lighting applications and cathode ray tubes (CRTs).…”

Section: Introductionmentioning

confidence: 99%

“…The model is tested experimentally using the EPD of LaB 6 particles from an isopropyl alcohol (IPA) solution containing Mg(NO 3 ) 2 . Suspensions of this type, containing a highly charged cation in an alcohol solvent, have been used extensively for EPD, e.g., of phosphor particles (Zn 2 SiO 4 , ZnS, ZnO) (2)(3)(4)(5), and Al 2 O 3 (7). LaB 6 has well-known antisputter properties and a low work function.…”

Section: Introductionmentioning

confidence: 99%

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Electrophoretic Deposition: A Quantitative Model for Particle Deposition and Binder Formation from Alcohol-Based Suspensions

Beer

Duval²,

Meulenkamp³

2000

Journal of Colloid and Interface Science

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Section: Suspension Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrophoretic Deposition: A Quantitative Model for Particle Deposition and Binder Formation from Alcohol-Based Suspensions

Beer

Duval²,

Meulenkamp³

2000

Journal of Colloid and Interface Science

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“…But EPD has been proven to be a very versatile coating method for a large variety of materials [131,132]. There a numerous publications on all kinds of EPD coatings (aqueous and nonaqueous systems) like hydroxylapatite layers [133][134][135][136], dense titania layers [47,137], zirconia layers [138], silica sol-gel deposition [139], SiC oxidation protection layers [140], electrolyte layers for SOFC [141][142][143][144][145][146], MgO coatings [147,148], 0.1-300 µm thick CeO 2 films [149], CdS/Cu 2 S and TiO 2 for solar cells [150,151], phosphors [152,153], PZT layers [154], BaTiO 3 films 1-5 µm thick [155], quantum sized nano-ZnO films [156], up to 4 mm thick Ni-alumina cermet layers [157], abrasion resistant WC-Co layers [158], diamond films on silicon substrates [159][160][161], MoS 2 lubricant films [162], ordered gold colloid monolayers [27,163], and alumina thermal insulations films [164].…”

Section: Deposition Of Coatingsmentioning

confidence: 99%

Preparation of High-Purity Glasses and Advanced Ceramics Via EPD of Nanopowders

Clasen

2011

Nanostructure Science and Technology

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For the preparation of advanced materials via a powder technological route the shaping process is most important after the synthesis of the powder. Therefore high production rates and the formation of a homogeneous compact are generally desirable. Furthermore, a high green density is necessary to reduce shrinkage during drying and sintering. This is of special importance for near net shaping or microstructuring. For coatings an even thickness with a good coverage of the edges is an additional specification that has to be fulfilled. The typical shaping processes for fine or advanced ceramics with particle sizes in the µm or even sub-µm region are slip casting, forming of high-viscous masses, and dry pressing. The decreasing of particles size leads to the area of nanoparticles with sizes less than 100 nm. These nanopowders show higher sintering activity leading to a decrease of sintering temperature. Thus smaller final grain sizes can be achieved or even quantum size effects can be observed. For glasses new perspectives are opened with nanopowders. Due to the reduction of processing temperatures nanosized glass powders can be completely sintered to transparent glasses via viscous flow below the crystallization temperature. Thus no crucibles are needed any more and high-purity glasses can be prepared. For coatings on substrates with limited temperature stability glazes and enamels can be applied without additional low melting components. Theses fluxes generally reduce the chemical stability of the coating.As these nanopowders tend to aggregate due to the increased influence of van der Waals attraction forces, these nanopowders have to be dispersed perfectly. For that suspensions are most suited and the formation of aerosols (dust of nanopowders) is prevented, which might be hazardous. In electrostatically stabilized suspensions the dispersed particles show a surface charge, which can be directly used for moving this particles in an applied external electric field leading to an electrophoretic deposition (EPD) [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. But it should be kept in mind that the electrostatical as well as

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“…Applications of EPD can be found in the deposition of aluminium oxide on heater filaments or BaSrCO 3 , a low work function precursor, for electron emitting devices like radio valves or cathode ray tubes [2,3]. In searching for unique coating capabilities and layer properties for these electronic devices EPD outperformed other layer application technologies like spray-, dip-or spin coating for a variety of reasons.…”

Section: Introductionmentioning

confidence: 99%

Examples of EPD Process Applications in the Electronic Industry and their Characteristics

Leth

Verhoeckx

2012

KEM

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Examples of electrophoretic deposition applications taken from the electronics industry illustrate the versatility of EPD. Determined by substrate dimensions and layer requirements, each application often requires its own unique system configuration. In the following examples EPD will be shown to have distinctive advantages over other layer application technologies like spray-, dip-or spin coating in for example layer conformity.

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Formation of Alumina Insulation Films for a CRT Heater by Constant Current Electrophoretic Deposition Method

Cited by 11 publications

References 0 publications

Electrophoretic Deposition: A Quantitative Model for Particle Deposition and Binder Formation from Alcohol-Based Suspensions

Electrophoretic Deposition: A Quantitative Model for Particle Deposition and Binder Formation from Alcohol-Based Suspensions

Preparation of High-Purity Glasses and Advanced Ceramics Via EPD of Nanopowders

Examples of EPD Process Applications in the Electronic Industry and their Characteristics

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