Engineering Materials
Corrosion resistance of steel is increased by addition of

Chromium and nickel
Vanadium, aluminium
Sulphur, phosphorus, lead
Tungsten, molybdenum, vanadium, chromium

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Engineering Materials
Cyaniding is the process of

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

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