{"id":28829,"date":"2021-01-25T09:00:36","date_gmt":"2021-01-25T09:00:36","guid":{"rendered":"http:\/\/sitepourvtc.com\/?page_id=28829"},"modified":"2023-08-12T05:36:39","modified_gmt":"2023-08-12T05:36:39","slug":"metals-what-are-metals","status":"publish","type":"page","link":"https:\/\/sitepourvtc.com\/nuclear-engineering\/metals-what-are-metals\/","title":{"rendered":"Metals – What are Metals"},"content":{"rendered":"
<\/a>Metal<\/strong> is a material (usually solid) comprising one or more metallic elements<\/strong> (e.g., iron<\/a>, aluminium<\/a>, copper<\/a>, chromium<\/a>, titanium<\/a>, gold<\/a>, nickel<\/a>), and often also non-metallic elements (e.g., carbon, nitrogen, oxygen) in relatively small amounts. The unique feature of metals, as far as their structure is concerned, is the presence of charge carriers, specifically electrons<\/strong><\/a>. The nature of the metallic bond<\/strong> gives this feature. The electrical and thermal conductivities<\/a> of metals originate from<\/strong> their outer electrons being\u00a0delocalized<\/strong>.<\/p>\n A metallic bond<\/strong><\/a> is a chemical bond in which the atoms<\/a> do not share or exchange electrons to bond together. Instead, many electrons<\/a> (roughly one for each atom) are more or less free to move throughout the metal so that each electron can interact with many fixed atoms.<\/p>\n <\/p>\n The free electrons shield the positively charged ion cores from the mutually repulsive electrostatic forces they would otherwise exert upon one another; consequently, the metallic bond<\/strong> is nondirectional in character. Metallic bonding is found in metals and their alloys. The free movement or delocalization of bonding electrons leads to classical metallic properties such as luster (surface light reflectivity), electrical and thermal conductivity<\/a>, ductility, and high tensile strength.<\/p>\n Metallurgy<\/strong> is a domain of materials science and materials engineering that studies the physical and chemical behavior of metallic elements and their alloys.<\/p>\n <\/p>\n Metallurgy concerns metals’ chemical, physical, and atomic properties and structures and the principles whereby metals are combined to form alloys. Metallurgy is used to separate metals from their ore.<\/p>\n Metallurgy is subdivided into ferrous metallurgy<\/strong> (the metallurgy of iron and its alloys also known as black metallurgy) and non-ferrous metallurgy<\/strong> (the metallurgy of aluminium, copper, etc.). Ferrous metallurgy involves processes and alloys based on iron, while non-ferrous metallurgy involves processes and alloys based on other metals.<\/p>\nMetallic Bond<\/h2>\n
Metallurgy<\/h2>\n
Alloys<\/h2>\n