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Ceramics Plates, Flower Design, Blue Flower, Decor Plates
A ceramic is an inorganic, nonmetallic[a] sound material comprising material, nonmetal or metalloid atoms held in ionic and covalent bonds primarily. The crystallinity of ceramic materials ranges from highly oriented to semi-crystalline, and often completely amorphous (e.g., glasses). Differing crystallinity and electron use in the ionic and covalent bonds cause most ceramic materials to be good thermal and electro-mechanical insulators (thoroughly investigated in ceramic executive). With such a big range of possible options for the composition/structure of an ceramic (e.g. almost all of the elements, nearly all types of bonding, and all degrees of crystallinity), the breadth of the topic is vast, and identifiable attributes (e.g. hardness, toughness, electrical conductivity, etc.) are hard to identify for the group all together. General properties such as high melting temperature, high hardness, poor conductivity, high moduli of elasticity, chemical resistance and low ductility are the norm,[1] with known exceptions to each of these rules (e.g. piezoelectric ceramics, glass transition heat range, superconductive ceramics, etc.). Many composites, such as carbon and fiberglass fiber, while made up of ceramic materials, are not regarded as area of the ceramic family.The word "ceramic originates from the Greek expression ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The earliest known mention of the main "ceram-" is the Mycenaean Greek ke-ra-me-we, "workers of ceramics", written in Linear B syllabic script.[5] The term "ceramic" may be used as an adjective to spell it out a material, product or process, or it might be used as a noun, either singular, or, more commonly, as the plural noun "ceramics".The earliest ceramics created by humans were pottery things, including 27,000-year-old figurines, created from clay, either alone or mixed with other materials like silica, hardened, sintered, in flames. Later ceramics were glazed and fired to build even, colored surfaces, lessening porosity by using glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include domestic, commercial and building products, as well as an array of ceramic art. Within the 20th century, new ceramic materials were developed for use in advanced ceramic executive, such as in semiconductors.Ceramic artifacts produce an important role in archaeology for understanding the culture, tendencies and technology of peoples of the past. They are simply among the most frequent artifacts found at an archaeological site, generally by means of small fragments of broken pottery called sherds. Processing of accumulated sherds can be regular with two main types of research: specialized and traditional.Traditional analysis will involve sorting ceramic artifacts, sherds and larger fragments into specific types predicated on style, composition, morphology and manufacturing. By creating these typologies it is possible to distinguish between different cultural styles, the goal of the ceramic and technological state of the folks among other conclusions. In addition, by looking at stylistic changes of ceramics over time is it possible to separate (seriate) the ceramics into distinct diagnostic groups (assemblages). An evaluation of ceramic artifacts with known dated assemblages allows for a chronological task of these parts.[13]The technical method of ceramic analysis will involve a finer examination of the structure of ceramic artifacts and sherds to determine the way to obtain the material and through this the possible developing site. Key criteria are the structure of the clay and the temper used in the produce of the article under study: temper is a materials put into the clay through the initial production stage, and it can be used to aid the subsequent drying process. Types of temper include shell pieces, granite fragments and surface sherd portions called 'grog'. Temper is identified by microscopic examination of the temper material usually. Clay identification is determined by a process of refiring the ceramic, and assigning a color to it using Munsell Soil Color notation. By estimating both the temper and clay compositions, and locating an area where both are known to occur, an project of the material source can be produced. From the source assignment of the artifact further investigations can be made into the site of manufacture.
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A ceramic is an inorganic, nonmetallic[a] sound material comprising material, nonmetal or metalloid atoms held in ionic and covalent bonds primarily. The crystallinity of ceramic materials ranges from highly oriented to semi-crystalline, and often completely amorphous (e.g., glasses). Differing crystallinity and electron use in the ionic and covalent bonds cause most ceramic materials to be good thermal and electro-mechanical insulators (thoroughly investigated in ceramic executive). With such a big range of possible options for the composition/structure of an ceramic (e.g. almost all of the elements, nearly all types of bonding, and all degrees of crystallinity), the breadth of the topic is vast, and identifiable attributes (e.g. hardness, toughness, electrical conductivity, etc.) are hard to identify for the group all together. General properties such as high melting temperature, high hardness, poor conductivity, high moduli of elasticity, chemical resistance and low ductility are the norm,[1] with known exceptions to each of these rules (e.g. piezoelectric ceramics, glass transition heat range, superconductive ceramics, etc.). Many composites, such as carbon and fiberglass fiber, while made up of ceramic materials, are not regarded as area of the ceramic family.
The word "ceramic originates from the Greek expression ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The earliest known mention of the main "ceram-" is the Mycenaean Greek ke-ra-me-we, "workers of ceramics", written in Linear B syllabic script.[5] The term "ceramic" may be used as an adjective to spell it out a material, product or process, or it might be used as a noun, either singular, or, more commonly, as the plural noun "ceramics".
The earliest ceramics created by humans were pottery things, including 27,000-year-old figurines, created from clay, either alone or mixed with other materials like silica, hardened, sintered, in flames. Later ceramics were glazed and fired to build even, colored surfaces, lessening porosity by using glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include domestic, commercial and building products, as well as an array of ceramic art. Within the 20th century, new ceramic materials were developed for use in advanced ceramic executive, such as in semiconductors.
Ceramic artifacts produce an important role in archaeology for understanding the culture, tendencies and technology of peoples of the past. They are simply among the most frequent artifacts found at an archaeological site, generally by means of small fragments of broken pottery called sherds. Processing of accumulated sherds can be regular with two main types of research: specialized and traditional.
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