By Philippe Boch, Jean-Claude Nièpce

This e-book is basically an advent to the enormous kinfolk of ceramic fabrics. the 1st half is dedicated to the fundamentals of ceramics and tactics: uncooked fabrics, powders synthesis, shaping and sintering. It discusses conventional ceramics in addition to “technical” ceramics – either oxide and non-oxide – that have a number of developments.The moment half specializes in houses and functions, and discusses either structural and sensible ceramics, together with bioceramics. The fields of erosion, slicing and tribology illustrate the significance of mechanical homes. It additionally offers with the questions/answers of a ceramicist relating to electronuclear expertise. As chemistry is a vital self-discipline for ceramicists, the publication exhibits, particularly, what tender chemistry can give a contribution because of sol-gel tools.

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6. Specificity of ceramics The variety of ceramics is such that they do not exhibit uniform characteristics, but there are common features that give them an undeniable specificity. e. linear defects in atomic stacking that are the reason for the plasticity of metals; hence their brittleness. On the other hand, ceramics offer a high degree of hardness and high moduli of elasticity; their mechanical resistance can be remarkable; they are light; their melting point is generally high; – most ceramics exhibit good resistance to chemical aggressions.

As early as this period, there was a more complex use of argillaceous earth, which was prepared by adding, probably voluntarily, organic fibers and mica [HAR 97]. It is interesting to note that the first ceramics appeared sporadically in huntergatherer, semi-nomadic societies, in which an elaborate social structure appeared. For the moment, in the current state of discoveries, these very early appearances of terra cotta in the form of statuettes are rare and do not seem to last (except in the case of Jomons).

They are often described as traditional ceramics, a term which we do not endorse because it may be understood as opposed to progress and technical improvements – whereas many silicate ceramics are sophisticated materials – but which is justified by history: it was only at the end of the 19th century that non-silicate ceramics came to the scene, with specific uses that explain their other name, technical ceramics. Our choice here is to use “silicate ceramics” and “non-silicate ceramics”, rather than opposing tradition and advanced technology.

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