Review: aqueous tape casting of ceramic powders

Hotza, Dachamir; Greil, Peter

doi:10.1016/0921-5093(95)09785-6

Cited by 335 publications

(195 citation statements)

References 14 publications

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“…The role of the dispersant is to ensure the stability of the slurry, and the roles of the binder and plasticizer are to ensure adequate strength and flexibility of the tape. Details of the tape-casting technology for producing ceramics can be found in several review articles [145][146][147]. Two major nonaqueous tape-casting processes have been developed to produce textured Si 3 N 4 , as listed in table 7.…”

Section: Tca Techniquementioning

confidence: 99%

Textured silicon nitride: processing and anisotropic properties

Zhu

Sakka

2008

Science and Technology of Advanced Materials

158

104

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Textured silicon nitride (Si 3 N 4 ) has been intensively studied over the past 15 years because of its use for achieving its superthermal and mechanical properties. In this review we present the fundamental aspects of the processing and anisotropic properties of textured Si 3 N 4 , with emphasis on the anisotropic and abnormal grain growth of β-Si 3 N 4 , texture structure and texture analysis, processing methods and anisotropic properties. On the basis of the texturing mechanisms, the processing methods described in this article have been classified into two types: hot-working (HW) and templated grain growth (TGG). The HW method includes the hot-pressing, hot-forging and sinter-forging techniques, and the TGG method includes the cold-pressing, extrusion, tape-casting and strong magnetic field alignment techniques for β-Si 3 N 4 seed crystals. Each processing technique is thoroughly discussed in terms of theoretical models and experimental data, including the texturing mechanisms and the factors affecting texture development. Also, methods of synthesizing the rodlike β-Si 3 N 4 single crystals are presented. Various anisotropic properties of textured Si 3 N 4 and their origins are thoroughly described and discussed, such as hardness, elastic modulus, bending strength, fracture toughness, fracture energy, creep behavior, tribological and wear behavior, erosion behavior, contact damage behavior and thermal conductivity. Models are analyzed to determine the thermal anisotropy by considering the intrinsic thermal anisotropy, degree of orientation and various microstructure factors. Textured porous Si 3 N 4 with a unique microstructure composed of oriented elongated β-Si 3 N 4 and anisotropic pores is also described for the first time, with emphasis on its unique mechanical and thermal-mechanical properties. Moreover, as an important related material, textured α-Sialon is also reviewed, because the presence of elongated α-Sialon grains allows the production of textured α-Sialon using the same methods as those used for textured β-Si 3 N 4 and β-Sialon.

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Section: Tca Techniquementioning

confidence: 99%

Textured silicon nitride: processing and anisotropic properties

Zhu

Sakka

2008

Science and Technology of Advanced Materials

158

104

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“…Y 2 O 3 was used as sintering aid [13], and its average particle size and density was 2.0 μm and 5.01 g/cm 3 , respectively. Because of the hydrolysis of these two kinds of powder [14], they were coated with a waterproof agent.…”

Section: Methodsmentioning

confidence: 99%

“…Commercial AlN powder (Grand F, Tokuyama Co., Japan) with an average particle size of 1.1 μm was used as raw material, and the density was 3.26 g/cm 3 . Y 2 O 3 was used as sintering aid [13], and its average particle size and density was 2.0 μm and 5.01 g/cm 3 , respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Generally, high quality thin AlN ceramic substrates for electronic applications are fabricated by tape-casting process [2]. There are two types of tape-casting process based on different kinds of solvents, non-aqueous and aqueous systems [3,4]. For the non-aqueous system, organic additives are flammable and toxic, which would cause environmental problems.…”

Section: Introductionmentioning

confidence: 99%

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Gel-tape-casting of aluminum nitride ceramics

Shang

Wang

et al. 2017

J Adv Ceram

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Aluminum nitride ceramic sheets were formed for the first time by a novel and simple method, namely gel-tape-casting process, where only two additives were used to prepare the slurries. PIBM (a water-soluble copolymer of isobutylene and maleic anhydride) acted as both dispersant and gelling agent, and PEG (polyethylene glycol) acted as plasticizer. Combining the advantages of gel-casting and tape-casting processes, flexible and uniform green tapes were obtained. The rheological properties of AlN slurries were studied to optimize the PIBM content and solids loading. After drying and debinding, the green sheets were sintered at 1840 ℃ in N 2 atmosphere. Homogeneous microstructure with average grain size of about 7 μm was observed in the final AlN ceramics. Thermal conductivity of the AlN ceramics was 161 W/(m·K).

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“…Tape casting is widely used to produce capacitors, sensors, piezoelectrics, heat sinks, and electrodes for SOFC [22][23][24] . As in any colloidal processing route, a major concern is the preparation of a well-dispersed suspension with the highest solids content, thus requiring the suitable selection of a deflocculant [25][26][27][28][29][30] .…”

Section: Introductionmentioning

confidence: 99%

Processing of Copper Based Foil Hardened with Zirconia by Non-Deformation Method

et al. 2017

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Flat sintered copper and copper-zirconia substrates, with zirconia nanoparticles contents of 1 and 3 vol%, were produced by aqueous tape casting and controlled sintering. Aqueous suspensions were prepared to a solid content of 58 vol% using 3 wt% commercial binder emulsion. The green tapes were treated at 350 ºC in air to remove organics and sintered at temperatures ranging from 800 to 1000 ºC in atmosphere of Ar/5%H 2 . Copper tapes reached almost full densification at 900 ºC. Composite with 1 vol% zirconia, sintered at 800 ºC, maintained high density and provided a noticeable increase of the mechanical strength, whereas further additions up to 3 vol% reduced the densification and the resulting mechanical performance became poorer.

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Review: aqueous tape casting of ceramic powders

Cited by 335 publications

References 14 publications

Textured silicon nitride: processing and anisotropic properties

Textured silicon nitride: processing and anisotropic properties

Gel-tape-casting of aluminum nitride ceramics

Processing of Copper Based Foil Hardened with Zirconia by Non-Deformation Method

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