3.1 Forming and Drying

Yang, Yunpeng; Laarz, Eric

doi:10.1016/b978-012654640-8/50005-5

Cited by 6 publications

(6 citation statements)

References 40 publications

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“…The green ceramic specimens must have sufficient strength to prevent fracture or cracking during handling and drying (Yang et al, 2003). The compressive strength of the ceramic products after drying is due to the packing of the clay particles resulting from the plasticity of the clay paste during the forming processes (Celik, 2010).…”

Section: Resultsmentioning

confidence: 99%

Characterization and use of clays and argillites from the south of Santa Catarina State, Brazil, for the manufacture of clay ceramics

et al. 2020

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Six clays from various deposits were studied for their use in the production of structural clay products. The clays were characterized using chemical (X-ray fluorescence), mineralogical (X-ray diffraction) and thermal (differential scanning calorimetry/thermogravimetry) analyses. Particle-size distribution was determined by laser diffraction, plasticity by the Pfefferkorn method and the residue by the sieve-size method. Next, specimens were formed by extrusion and characterized by their linear thermal shrinkage (on drying and firing), water absorption, bulk density, porosity and compressive strength. The clays were, in general, suitable for the manufacture of structural ceramics, mainly bricks. The clays from flooded pits (AV1 and AV2) were classified as floodplain clays and alluvial clays. The clays mined in mountainous regions (AM1 and AM2, as well as AV1) were characterized as siliceous clays due to the abundance of free SiO2 phases.

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Section: Resultsmentioning

confidence: 99%

Characterization and use of clays and argillites from the south of Santa Catarina State, Brazil, for the manufacture of clay ceramics

et al. 2020

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“…Indirect LS with organic binders has mainly been used to produce highly porous components, but relatively high densities have 2 The term "coarse powder" is used throughout this review in opposition to colloidal (submicron) powders and few-micron powders (1-10 μm).…”

Section: Powder-based Indirect Laser Sintering (P-ils)mentioning

confidence: 99%

“…Ceramic powders are commonly mixed with a binder and other additives, such as a deflocculant and a plasticiser, to form a dry powder mix for shaping of the green body by die pressing or cold isostatic pressing (dry forming). Alternatively, the powder can be dispersed in a liquid carrier to form a colloidal ceramic slurry of ceramic powder in a solvent for tape casting and slip casting (wet forming), or in a wax 1 for injection moulding (plastic forming) [2]. However, dry forming processes are currently far more commonly used in industry than wet forming techniques since they are the cheapest approaches.…”

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confidence: 99%

Additive manufacturing of advanced ceramic materials

Lakhdar

Tuck

Binner

et al. 2021

Progress in Materials Science

415

172

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“…In this case, steric stabilization is required to form a more stable suspension with a high content of solids [ 90 ] without changing the chemical composition of the surface and, therefore, the properties of the finally sintered parts. According to the results obtained by Yang et al [ 91 ], steric stabilization is based mainly on two mechanisms. When two particles with adsorbed polymers approach each other, the number of conformations that the polymer can assume decreases due to the presence of the other particle.…”

Section: Influence Of Feedstock Parameters On Si 3 ...mentioning

confidence: 99%

Granulation of Silicon Nitride Powders by Spray Drying: A Review

et al. 2022

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Spray drying is a widely used method of converting liquid material (aqueous or organic solutions, emulsions and suspensions) into a dry powder. Good flowability, narrow size distribution, and controllable morphology are inherent in powders produced by spray drying. This review considers the granulation factors that influence the final properties of the silicon nitride dried powders. The first group includes the types of atomizers, manifolds, and drying chamber configurations. The process parameters fall into the second group and include the following: inlet temperature, atomizing air flow, feed flow rate, drying gas flow rate, outlet temperature, and drying time. Finally, the last group, feedstock parameters, includes many factors such as feed surface tension, feed viscosity, solvent type, solid particle concentration, and additives. Given the large number of factors affecting morphology, particle size and moisture, optimizing the spray drying process is usually achieved by the “trial and error” approach. Nevertheless, some factors such as the effect of a solvent, dispersant, binder, and sintering additives considered in the literature that affect the Si3N4 granulation process were reviewed in the work. By summarizing the data available on silicon nitride powder production, the authors attempt to tackle the problem of its emerging demand in science and industry.

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3.1 Forming and Drying

Cited by 6 publications

References 40 publications

Characterization and use of clays and argillites from the south of Santa Catarina State, Brazil, for the manufacture of clay ceramics

Characterization and use of clays and argillites from the south of Santa Catarina State, Brazil, for the manufacture of clay ceramics

Additive manufacturing of advanced ceramic materials

Granulation of Silicon Nitride Powders by Spray Drying: A Review

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