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- Ceramics (15941 bytes)
1: ...usands of years, involves the creation of objects from clay and other ceramic materials. This article ...
7: ...his art form encompasses the creation of anything from earthenware and porcelain to decorative tiles a...
39: ... the longevity of ceramic products make it an eco-friendly choice in an age of disposable products and...
46: The word '''''ceramic''''' is derived from the [[Greek language|Greek]] word Κ&epsil...
53: *[[Boron carbide]] ([[boron|B]]<sub>4</sub>[[carbon|C]]), which is... - Calcium (9166 bytes)
106: ...llic element that is purified by [[electrolysis]] from [[calcium fluoride]]. It burns with a yellow-re...
122: ... [[calcium chloride|chloride]], [[calcium carbide|carbide]], [[calcium cyanamide|cyanamide]], and [[calcium... - Cobalt (13481 bytes)
102: ...th 1.6~1.7 [[Bohr magneton]]s per [[atom]]. It is frequently associated with [[nickel]], and both are ...
112: ** Cemented [[carbide]]s (also called hard metals) and [[diamond]] tool...
130: ...y radioactive, and so cobalt machines have fallen from favor in the Western world where [[linacs]] are...
142: ... [[nickel]]). Some also think the name may derive from Greek ''kobalos'', which means 'mine', and whic...
149: Cobalt is not found as a free metal and is generally found in the form of [[o... - Hafnium (9162 bytes)
162: ... compound known and hafnium nitride is the most refractory of all known metal nitrides with a [[meltin...
179: It was separated from zirconium through repeated recrystallization of...
182: ...l [[zirconium]] compounds but does not exist as a free element in nature. [[Mineral]]s that contain zi... - Iron (23778 bytes)
135: ...of iron in the various layers of the Earth ranges from high at the inner core to about 5% in the outer...
137: ...ed from iron ore, and is hardly ever found in the free (elemental) state. In order to obtain elementa...
146: ...icance is that of an intermediate step on the way from [[iron ore]] to [[cast iron]] and [[steel]].
154: ... northern and western European languages, derives from the [[Etruscan]] ''aisar'' which means "the god...
156: ... numbers of smelted iron objects (distinguishable from meteoric iron by the lack of nickel in the prod... - Aluminium (26079 bytes)
48: ...the [[world economy]]. Structural components made from aluminium are vital to the [[aerospace]] indust...
58: ...so coated with a thin layer of aluminium, but are front coated to avoid internal reflections even thou...
82: ...lue if people started producing this bright metal from clay. Therefore, instead of giving the goldsmit...
86: ...in bauxite ore and successfully extracted it. The Frenchman [[Henri Saint-Claire Deville]] improved W?...
88: ...t process]] in [[1886]] made extracting aluminium from minerals cheaper, and is now the principal meth... - Silicon (13233 bytes)
47: ...-efficient of [[resistance]], since the number of free charge carriers increases with temperature.
50: ...] and [[animal]] life. [[Diatom]]s extract silica from water to build their protective cell walls. Oth...
51: ...[Pottery]]/[[Vitreous enamel|Enamel]] - It is a refractory material used in high-temperature material ...
54: *[[Glass]] - Silica from sand is a principal component of glass. Glass c...
55: *[[Abrasive]]s - [[Silicon_carbide|Silicon carbide]] is one of the most important abrasives. - Tantalum (11817 bytes)
145: | [[Hafnium|<sup>180</sup>Hf]]<br/>[[Wolfram|<sup>180</sup>W]]<br/><sup>180</sup>Ta
171: ...ic solutions containing the [[fluoride]] ion, and free [[sulfur trioxide]]. The element has a melting ...
176: ...oyed with other metals, it is also used in making carbide tools for metalworking equipment and in the produ...
178: .... Tantalum oxide is used to make special high [[refractive index]] [[glass]] for [[camera]] lenses. Th...
183: ...e level he could reach, and if he reached for the fruit, the branches moved out of his grasp. This was... - Titanium (20884 bytes)
118: ... point]] of this element makes it useful as a [[refractory metal]]. Titanium is as strong as steel, bu...
125: ... titanium dioxide are excellent reflectors of [[infrared radiation]] and are therefore used extensivel...
143: ...amed it ''menachite''. At around the same time, [[Franz Joseph Muller]] also produced a similar substa...
145: The metal has always been difficult to extract from its various ores. Pure metallic titanium (99.9%...
147: ...ties of titanium when a European company set up a front for the US foreign intelligence agencies to pu... - Tungsten (13647 bytes)
163: ... tungsten is found in several ores including [[wolframite]] and [[scheelite]] and is remarkable for it...
169: ...arbon|C]], WC) in cemented [[carbide]]s. Cemented carbides (also called hardmetals) are wear-resistant mate...
181: ...other compounds are used in [[paint]]s. Tungsten Carbide has recently been used in the fashioning of jewel...
185: ...Jos靝 and [[Fausto Elhuyar]] found an acid in wolframite that was identical to tungstic acid. In [[Sp...
187: ...ure from both sides, because of its sources of wolframite ore. The resistance to high temperatures, as... - Vanadium (13808 bytes)
112: ... alloys used in [[jet engine]]s and high-speed airframes
114: * It is an important [[carbide]] stabilizer in making steels.
119: ...oxide]] (V[[oxygen|O]]<sub>2</sub>) can block [[infrared radiation]] (and not visible light) at some s...
124: ... to be mistaken and accepted the statement of the French chemist.
126: ...ores and later that same year [[Friedrich Woehler|Friedrich W?r]] confirmed del Rio's earlier work.
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