02 Processing overview - Overview of Ceramic Processing...

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1 Objective: see the whole picture of ceramic processing with key steps Understand the fundamental principles causing these steps Understand important challenges in each step and Understand the impact on the properties for the final part At the end of this lecture, you should be able to name the key steps in ceramic processing, name the underlying physics, chemistry as well as some challenges. You should be able to describe how processing parameters/flaws impact some final properties. Overview of Ceramic Processing
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2 Specifications of the characteristics of an optimal processing method for advanced ceramics Materials properties Low cost -high reliability - near net-shape -sufficient strength - simple processing concept (minimal process steps) - high flexibility - water-based (green processing/ sustainability)
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3 Strength Limiting Flaws in Dense Ceramics Heterogeneity organic inorganic density fluctuation granules
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4 Ceramic Processing (Bulk) General overview for particle systems 1. Ceramic powder selection 2. Particle dispersion/heterogeneity removal 3. Granule formation and/or die filling 4. Consolidation (pressure, capillary pressure, gelation) 5. Demolding 6. Drying 7. Burnout of organic aids 8. Sintering
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