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Powder Consolidation and Forming of Ceramics
Published in M. N. Rahaman, Ceramic Processing and Sintering, 2017
The casting methods have the capability for producing a fairly homogeneous particle packing in the green body, but they are generally limited to the production of relatively thin articles. Slip casting offers a route for the production of complex shapes and is widely used in the traditional clay-based industry, for example, for the manufacture of pottery and sanitary ware. It has been steadily introduced over the past 50 years to the production of advanced ceramics. Tape casting is widely used for the production of thin sheets, substrates, and multilayer components for the electronic packaging industry.
Forming of Ceramics
Published in Mohamed N. Rahaman, Ceramic Processing, 2017
Although the casting methods have the capability for producing homogeneous particle packing in the green body, they are generally limited to the production of relatively thin articles. Slip casting offers a route for the production of complex shapes and is widely used in the traditional clay-based industry. It has been steadily introduced over the past 50 years or so to the production of advanced ceramics. Tape casting is widely used for the production of thin sheets, substrates, and multilayer components for the electronic packaging industry.
Substrate Technology
Published in Yufeng Jin, Zhiping Wang, Jing Chen, Introduction to Microsystem Packaging Technology, 2017
Yufeng Jin, Zhiping Wang, Jing Chen
Compared with the other processes, AlN powder made from direct nitrification of Al has a wider range of scales and a larger average particle size. AlN green sheet can be obtained by ordinary ceramic processes such as dry-pressing, tape casting, and mold casting. In particular, tape casting has the advantages of high productivity, ease of cceation and uninterrupted and automatic production. It can also improve product quality, lower production cost and make mass production possible.[12]
Heat transfer and drying kinetics of tomato pulp processed by cast-tape drying
Published in Drying Technology, 2018
Angelise Durigon, Emanuelle Iaçana Berté Parisotto, Bruno Augusto Mattar Carciofi, João Borges Laurindo
Tape casting is an industrial process for preparing thin layers of viscous fluids, such as ceramic suspension.[1] This process has received increasing attention for producing protein- and starch-based films.[23456]
Component fabrication techniques for solid oxide fuel cell (SOFC) – A comprehensive review and future prospects
Published in International Journal of Green Energy, 2022
Alagu Segar Deepi, Srinivasan Dharani Priya, Arputharaj Samson Nesaraj, Anburaj Immanuel Selvakumar
The fabrication procedure starts by mixing ceramic and polymer mixture with dispersing agent to prepare the slurry. In addition to these, binders such as polyvinyl butyral and plasticizers such as polyethylene glycol were used to form stable suspension of the slurry. Mostly, a ball miller is used for uniform mixing (Kwon and Han 2020). After the slurry formation, the de-airing process is followed to eliminate the air bubbles under vacuum. Then, the slurry is tape-casted to produce individual different layers with different thicknesses based on requirement. Finally, sintering is done to dry the component and shrinkage behavior is studied to eliminate the flaws and to improve reliability. The typical image of tape casting process is presented in Figure 3. Liu et al. prepared a multi-layer ceramic structure sequentially by tape casting ceramic slurries of different compositions onto a Mylar carrier followed by co-sintering at 1400°C. The resulting half-cells contain a 300 μm thick NiO–yttria stabilized zirconia (YSZ) anode support, a 20 μm NiO–YSZ anode functional layer, and an 8 μm YSZ electrolyte membrane (Liu and Liu 2019). Gao et al. prepared an anode-supported LT-SOFC with thin La0.8Sr0.2Ga0.8Mg0.2O3−δ (LSGM) electrolyte made by tape casting. Figure 4 presents a low magnification fracture cross-sectional scanning electron microscopy (SEM) image of LSGM, which is taken after electrochemical testing of a typical cell with anode functional layer (AFL), made using LSGM-30 weight % graphite and Ni loading of 12.3 volume %. Both the 30 μm thick LSCF cathode current collectors and 20 μm thick LSCF−GDC cathode functional layers appear to be porous as needed to facilitate gas transport. The LSGM electrolyte layer is ∼15 μm thick and appears to be quite dense. Both 50 μm thick Ni-LSGM anode functional layer (AFL) and 600 μm thick Ni-SLT supports show good porosity (Gao et al. 2017). Many novel upgraded tape casting processes have been explored followed by usage-combined techniques. Hedayut et al. presented tubular anode-supported solid oxide fuel cells (SOFCs) fabricated by a novel method based on tape casting. They made a multilayer tape cast by successive casting of the anode support, anode functional layer, and electrolyte. In their work, tape cast was rolled into a tube, and the ends of the tape were joined by solvent-assisted lamination. The sample was co-fired at 1400°C, followed by screen printing and sintering of the cathode at 1150°C (Hedayat, Panthi, and Du 2018). The schematic representation of fabrication of rolled SOFC is given in Figure 5. Tape-casting has been reported as a means to reduce the cost of SOFC mass production.