5233771
Description
Flashcards by Franzi Ska, updated more than 1 year ago
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Created by Franzi Ska
about 8 years ago
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| 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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