Metallurgy Essay

1110 words - 4 pages

Metallurgy is a domain of materials science that studies the physical and chemical behavior of metallic elements, their inter-metallic compounds, and their mixtures, which are called alloys. It is also the technology of metals: the way in which science is applied to their practical use. Metallurgy is commonly used in the craft of metalworking.GOLDGold is found and mined extensively and is usually used as jewelry for women in making of bracelets, trinkets, etc. in early days gold was usually pure when it was used to concoct significant items. This led to the ancient ways of naming metals. Therefore the early gold varied in their forms and this way gold was named Au from the Latin name Aurum meaning SHINING DAWN.Stone Age man learned to fashion gold into jewelry and ornaments, learning that it could be formed into sheets and wires easily. However, its malleability, which allows it to be formed into very thin sheet (0.000005 inches), ensures that it has no utilitarian value and early uses were only decorative. As gold is a noble metal, being virtually no corrosive and tarnish free, it served this purpose admirably.Gold is usually dispersed through the earth’s crust and is found in two types of deposits. In the lode deposits are usually found in the solid crust of the earth are usually mined conventional mining techniques. The deposit areas were mostly found in stream beds and the in the products of eroding lode deposits. Since then gold has literally left nature and found solace in stream beds. This is as many early gold smiths would collect nuggets of gold in their surrounding stream beds and would weld them together by hammering to form chain mail, cross guards, etc. During the process the heated metals would be identified as most of them were mixed with rocks, stones, gravel and dirt. This mad the process long and annoying making gold one of the most difficult metal to work with. Gold is widely dispersed throughout the earths crust (0.005 ppm) at a very small level; therefore, it is very important to find naturally occurring concentrations. The scarcity of gold and its value, due to mankind’s fascination with its color, have lead to gold being the one of the most important metals in daily life.ADVANTAGESThe mining of gold is a long and tedious process. However the results that the miners yield are large amounts of gold. As it is valuable like many other commodities(oil, coal, iron, lead, etc) many people buy it for fashion, gifts, etc. Also it has very few industrial uses making it a commodity which factories may not use.Its primary use is decorative (jewelry). Other than that it is used in computers, TVs, and other electronics in minute amounts.DISADVANTAGESGold mining unlike coal or deep mineral mining does not help to trigger earthquakes or the formation of volcanoes. However the mining causes much pollution and the gold ore is generally bad for the surrounding environment. Also to remove large, unmovable rocks dynamites and bombs...

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