MFE 201 Lecture Notes - Lecture 42: Slipcasting, Compression Molding, Sintering
31 Mar 2016
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Document Summary
Ceramics can withstand large compressive forces but not tensile or bending (due to the tensile component) forces. Crystalline ceramics, in general, have a higher melting temperature than metals. Sinter ( ring) or in the case of glass, heat treat. Natural: obtained from the earth, crushed and conditioned, such as clay and glass. Synthetic: mined but heavily processed to changed chemical and/or physical characteristics and properties, such as fused silica. Mining and processing to powder is similar to that of powder metals. Compaction (similar to pm), injection molding (similar to mim), slip casting. Slip casting is used to form a green shape for a ceramic from a slurry that contains the powdered ceramic material in it. This is used for crystalline ceramics but also for some clay ceramic applications. First, a porous mold is made and closed (a). Common materials to make the mold include specialty plasters.
