list the properties of alloys that makes them useful over pure metals? Explain this fact with suitable examples
1) Alloys are made to improve hardness and strength of metals. For example: when carbon is added to iron, its hardness and strength increases.
2) Alloys are made to improve resistance against corrosion.
3) Alloys are made to impart shine and lustre to a metal. For example: When nickel and chromium are added to iron, its corrosion resistance and shine increases.
4) Alloys are made to change the physical properties such as melting point of metals. For example the melting point of lead-tin alloy is lower than pure tin.
2) Alloys are made to improve resistance against corrosion.
3) Alloys are made to impart shine and lustre to a metal. For example: When nickel and chromium are added to iron, its corrosion resistance and shine increases.
4) Alloys are made to change the physical properties such as melting point of metals. For example the melting point of lead-tin alloy is lower than pure tin.