Abstract
This chapter is the first of a three-part series on interfaces. We are dividing the discussion only to make it manageable. An interface is a planar region separating two domains or materials. Hence we have the definition of a surface as the region that separates a solid or liquid from a gas or vacuum. The word “region” is used to make it clear from the beginning that the surface has a thickness; it is not the mathematical definition. Powder processing is the traditional route for forming ceramics; in powders the ratio of surface area to volume is large. With nanoparticle powders, the ratio can be huge.
We will first discuss two important questions concerning surfaces.
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What do we mean by the word surface?
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Why are surfaces so important for ceramics?
We will then consider, from several viewpoints, the two most important properties of surfaces.
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The energy associated with a curved surface is greater than for a flat surface.
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We add material to the bulk solid by attaching it to the surface.
As always, we keep in mind the following question: what is special about ceramics?
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General References
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Specific References
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(2007). Surfaces, Nanoparticles, and Foams. In: Ceramic Materials. Springer, New York, NY. https://doi.org/10.1007/978-0-387-46271-4_13
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DOI: https://doi.org/10.1007/978-0-387-46271-4_13
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