Aqueous tape casting of yttria stabilized zirconia

Albano, María P.; Garrido, Liliana B.

doi:10.1016/j.msea.2006.01.059

Cited by 48 publications

(24 citation statements)

References 13 publications

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“…Because of these requirements, water soluble dispersants were adopted to achieve steric and electrostatic stabilization. 2,[18][19][20] Several studies have shown that some binders also exhibit dispersion effects in the slurry. 21,22 Recently, a gelling agent known as ISOBAM has been shown to have spontaneous function both as a dispersant and as a gelling agent for ceramic powders.…”

Section: Introductionmentioning

confidence: 99%

Tape-casted transparent alumina ceramic wafers

Yang

2014

J. Mater. Res.

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Ceramic wafers of alumina (Al 2 O 3 ) were produced by tape casting of aqueous slurry followed by vacuum sintering. The binder system used to form the tape casting slurry is a copolymer of isobutylene and maleic anhydride, which is environmentally friendly, marketed under the name ISOBAM. The rheological properties of the slurries were studied by varying solid loading and binder addition level. Through the optimization of plasticizer addition, green tapes were casted with excellent plasticity and a thickness of 240-740 lm. The tapes displayed a post-sintering thickness of 150-660 lm. The morphologies, as well as the fracture surface and the as-sintered surface of the powder were examined using a scanning electron microscope (SEM). The in-line transmittance of the transparent unpolished Al 2 O 3 wafers with a thickness of 660 lm was found to be 72% at a wave length of 5 lm and 26% at a wave length of 600 nm.

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Section: Introductionmentioning

confidence: 99%

Tape-casted transparent alumina ceramic wafers

Yang

2014

J. Mater. Res.

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“…Tape casting is a well‐established technique for the production of thick ceramic layers by a colloidal process with homogeneous green microstructure, good surface finish, and thickness ranging between 0.05 and 1.5 mm 23–25 . Despite that several processes can be used to produce laminates, tape casting is widely used for its flexibility in terms of possible powder compositions and layer thickness 26–28 …”

Section: Introductionmentioning

confidence: 99%

ZrB₂‐Based Laminates Produced by Tape Casting

Medri

Pinasco

Sanson

et al. 2011

Int J Applied Ceramic Tech

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ZrB2‐based laminates were produced by tape casting and pressureless sintered at 2150°C in argon atmosphere using silicon nitride as sintering aids. Two different configurations were considered: planar (tile) and tubular (roll). After sintering, the laminates reached different relative densities depending on their composition (with or without SiC additions as secondary phase) or the final shape (tiles or rolls). Traces of the formation of oxygen\xE2\x80\x90free crystalline phases such as B4C and BN were found in all samples. The RT flexural strength of bars cut from the tile configuration was mainly affected by the coarse microstructure, residual porosity, and layer stacking sequence. A very low scattering of the flexural strength values was registered in ZrB2–SiC laminates because of the homogeneous microstructure and the absence of any defects between the layers. Tape casting allowed the production of thin homogenous laminates with a significant reduction of weight and a careful microstructure control.

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“…The long-term stability of a suspension is due to the repulsive forces acting among the surface charged particles. 11,12 Several powder materials have been studied to be used in waterbased slurries, such as: Al 2 O 3 , 11-14 Y 2 O 3 -stabilized ZrO 2 , [15][16][17][18] and cordierite. 10,19 In the past decade, water-based colloidal binders, such as: latexes, 11 cellulose ether, 8 polyvinyl alcohol (PVA), 18 albumin 20,21 and maltodextrin 22 have been investigated, aiming to produce green bodies with adequate properties.…”

Section: Introductionmentioning

confidence: 99%