Engineering Materials
Corrosion resistance of steel is increased by adding

Nickel and molybdenum
Chromium and nickel
Tungsten and sulphur
Aluminium and zinc

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Engineering Materials
The unit cells

Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal
May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice
All of these
Have the same orientation and their similar faces are parallel

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