Search results
Results From The WOW.Com Content Network
Pottery is also: (1) the art and wares made by potters; (2) a ceramic material (3) a place where pottery wares are made; and (4) the business of the potter. (W) Published definitions of Pottery include: -- "All fired ceramic wares that contain clay when formed, except technical, structural, and refractory products."
Plastic arts are art forms which involve physical manipulation of a plastic medium, such as clay, wax, paint – or even plastic in the modern sense of the word (a ductile polymer) – to create works of art. The term is used more generally to refer to the visual arts (such as painting, sculpture, ceramics, architecture, film and photography ...
In physics and materials science, plasticity (also known as plastic deformation) is the ability of a solid material to undergo permanent deformation, a non-reversible change of shape in response to applied forces. [1][2] For example, a solid piece of metal being bent or pounded into a new shape displays plasticity as permanent changes occur ...
Hardness. In materials science, hardness (antonym: softness) is a measure of the resistance to localized plastic deformation, such as an indentation (over an area) or a scratch (linear), induced mechanically either by pressing or abrasion. In general, different materials differ in their hardness; for example hard metals such as titanium and ...
Clay is a very fine-grained geologic material that develops plasticity when wet, but becomes hard, brittle and non–plastic upon drying or firing. [2][3][4] It is a very common material, [5] and is the oldest known ceramic. Prehistoric humans discovered the useful properties of clay and used it for making pottery. [6]
In pottery, leather-hard is the condition of a clay or clay body when it has been partially dried to a consistency similar to leather of the same thickness as the clay. At this stage, the clay object has approximately 15% moisture content. The clay is still visibly damp (normally a darkish grey, if it began whiteish) but has dried enough to be ...
Electroplasticity was first discovered by Eugene S. Machlin, who reported in 1959 that applying an electric field made NaCl weaker and more ductile. [2] Since then, the effect of electric fields on plasticity has been studied in many materials systems including metal, ceramics, and semiconductors.
Superplasticity. In materials science, superplasticity is a state in which solid crystalline material is deformed well beyond its usual breaking point, usually over about 400% during tensile deformation. [1] Such a state is usually achieved at high homologous temperature. Examples of superplastic materials are some fine-grained metals and ceramics.