Alloys Flashcards
1
Q
what is an alloy?
A
a mixture made up of either two or more different metals or a metal and non-metals. the metal added to the alloy becomes part of the lattice structure.
2
Q
why are alloys used instead of pure metals
A
they are stronger. brass is stronger than copper and does not corrode
alloys are more resistant to erosion
do not change shape at high temp
alumimium is alloyed with copper and silicon are used for making aircraft bodies because the alloy is stronger than aluminium alone and has a low density compared to pure aluminium
