Engineering Materials
Addition of lead and bismuth to aluminium results in

Improving machinability
Improvement of casting characteristics
Improvement of corrosion resistance
One of the best known age and precipitation hardening systems

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Cyaniding is the process of

Dipping steel in cyanide bath
Obtaining cyanide salts
Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
Reacting steel surface with cyanide salts

ANSWER DOWNLOAD EXAMIANS APP