Study of cracking and microstructural evolution during drying of tape-cast aluminium nitride sheets

Streicher, E.; Chartier, Thierry; Boch, P.

doi:10.1007/bf00544679

Cited by 13 publications

(9 citation statements)

References 1 publication

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“…Removal of the liquid vehicle required for colloidal processing often leads to problems with dimensional control, segregation, and cracking. 3,43,[132][133][134][135][136][137][138][139][140][141] In recent work, the drying behavior of ceramic layers derived from charge-stabilized colloidal suspensions, 135,136 tape-casting 133,134,137 and gelcasting 142 suspensions, and colloidal suspensions of varying stability 3 has been studied for the purpose of characterizing drying stress and structural evolution.…”

Section: Drying Behaviormentioning

confidence: 99%

Colloidal Processing of Ceramics

Lewis

2000

Journal of the American Ceramic Society

1,205

640

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Colloidal processing of ceramics is reviewed with an emphasis on interparticle forces, suspension rheology, consolidation techniques, and drying behavior. Particular attention is given to the scientific concepts that underpin the fabrication of particulate-derived ceramic components. The complex interplay between suspension stability and its structural evolution during colloidal processing is highlighted.

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Section: Drying Behaviormentioning

confidence: 99%

Colloidal Processing of Ceramics

Lewis

2000

Journal of the American Ceramic Society

1,205

640

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“…In such films, liquid must be transported from the center (supersaturated) region to the film edge to maintain uniformity in the surrounding saturated regions. Equation (13) provides an estimate of the characteristic length scale for capillary-driven fluid flow. If this length, which corresponds to l sat in Fig.…”

Section: (2) Structural Evolution During Dryingmentioning

confidence: 99%

“…Drying is a critical process step that often leads to problems with dimension control, segregation, and crack-ing. [9][10][11][12][13][14][15][16][17] Previous studies on drying have focused on sol-gel films, ceramic films derived from charge-stabilized colloidal suspensions, 10,11,14,15 and tape-cast ceramic layers, 16 with the purpose of relating suspension properties to their structural and stress evolution during drying. Little attention has been given to the influence of aggregation phenomena on the drying behavior of particulate films free of organic binder.…”

Section: Introductionmentioning

confidence: 99%

Aggregation Effects on the Compressive Flow Properties and Drying Behavior of Colloidal Silica Suspensions

Guo

Lewis

1999

Journal of the American Ceramic Society

109

115

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The influence of aggregation phenomena on the compressive flow properties and drying behavior of nonaqueous and aqueous silica (SiO 2 ) suspensions of varying electrolyte (NH 4 Cl) concentrations were studied. Compressive rheology measurements, including sedimentation and centrifugal consolidation, were first conducted to investigate consolidation behavior in the absence of solvent evaporation. The volume-fraction-dependent osmotic pressure and compressive yield stress were determined for dispersed and flocculated SiO 2 suspensions, respectively. Consolidation behavior then was studied in situ by simultaneously measuring stress evolution and solvent loss as a function of drying time. The observed drying stress histories of the films were complex, consisting of several characteristic regions. First, there was an initial period of stress rise to a maximum drying stress. These measured stress values exhibited good agreement with the osmotic pressure and compressive yield stress at equivalent SiO 2 volume fractions for the dispersed and flocculated systems, respectively. Beyond the maximum drying stress there was a subsequent region of stress decay, which coincided with the draining of liquidfilled pores. No residual drying stress was detected for films prepared from salt-free SiO 2 suspensions, whereas saltcontaining films exhibited residual drying stresses likely due to salt-bridging effects. Microstructural characterization of dried films prepared from aqueous SiO 2 suspensions revealed nonuniformities in the spatial distribution of colloidal particles and precipitated salt, with the highest concentrations located at the outer edges of the films. Such features result from capillary-induced transport of these species during drying, and they have important implications on colloidal processing of ceramic thick films and bulk forms.

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“…In this case the effect of fi ller size and dispersion of the mechanical properties have to be taken into account. Streicher and Chartier (1991) note that cracking arises from the relation between evaporation of the solvent and shrinkage. Incorrect shrinkage and a TCE mismatch between the green tape and the via fi ll material will cause residual stress, which leads to cracks inside the via (Chance and Wilcox, 1971;Portu et al , 2006;Zaraska et al , 2011).…”

Section: Internal Crackingmentioning

confidence: 99%

Multilayer glass–ceramic composites for microelectronics: processing and properties

Alias

2014

Advances in Ceramic Matrix Composites

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Study of cracking and microstructural evolution during drying of tape-cast aluminium nitride sheets

Cited by 13 publications

References 1 publication

Colloidal Processing of Ceramics

Colloidal Processing of Ceramics

Aggregation Effects on the Compressive Flow Properties and Drying Behavior of Colloidal Silica Suspensions

Multilayer glass–ceramic composites for microelectronics: processing and properties

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