3 Material Types

Description

Flashcards on 3 Material Types, created by Franzi Ska on 24/04/2016.
Franzi Ska
Flashcards by Franzi Ska, updated more than 1 year ago
Franzi Ska
Created by Franzi Ska over 8 years ago
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Resource summary

Question Answer
engeneering materlials can be divided into: -metals: iron(FE); copper (CU) -non-metals: carbon (C); silicon (Si)
Metals can be divided into: -ferrous metals: those that contain iron -non-ferrous metals: those that do not contain iron: copper
Elements Definition: pure materials in their most basic form. They cannot be broken down into different constituents
Elements example iron carbon aluminium
Compounds definition consist of two or more elements that are chemically bound- that is, combined by a chemical reaction
compounds example water (which is a compound of hydrogen and oxygen)
mixtures definition consist of two or more elements or compounds which are mixed togehter, but which are not chemically bound. e.g. alloys
alloy definition metals which have other metals and/or non-metals mexed with them. alloys are much more widely used than pure metals
alloy example steel: an iron-carbon alloy
alloying metals metals which are added to alloys, in small quantities relative to the main metal
alloying metall example chronium (Cr) manganese (Mn) tungsten (W)
aluminium alloys used in construction of aeroplanes, automobiles, bicycles and buildings. pure aluminium parts corrode too easily, so they are unsuitable fore use in aeroplanes and buildings
why are alloys so important? alloys combine the most useful properties of different metals to form an alloy that is superior and specific to what it is needed for than just a pure metal, thus you may need less pure metal with an alloy
verstärken; aussteifen reinforce reinforced concrete reinforcing reinforcement
composite definition Made up of several parts or elements
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