Materials Science: Unit I: Crystallography
Anna University Solved Problems
Crystallography | Materials Science
Anna University Solved Problems : Crystallography - Materials Science
ANNA UNIVERSITY SOLVED PROBLEMS Problem 1.4 Lattice constant of a BCC crystal is 0.36 nm. Find its atomic radius. Given data a = 0.36 nm = 0.36 × 10-9 m Solution Problem 1.5 Copper is FCC whose atomic radius is 1.26 × 10-10 m. Calculate its lattice constant. Given data r = 1.26 × 10-10 m. Solution substituting the given value, we have Problem 1.6 An element has a HCP structure. If the radius of the atom is 1.605 Å, find the volume of unit cell. Given data r = 1.605 Å = 1.605 × 10-10 m Solution In the case of HCP, ⸫ c = 5.24 × 10-10 m Problem 1.7 Copper has a fcc structure and its atomic radius is 1.273 Å. Find (1) lattice parameter and (2) density of copper. Atomic weight of copper = 63.5 Avagadro's number = 6.02 × 1026 mol-1 Given data Atomic radius for fcc system r = 1.273 Å = 1.273 × 10-10 m Atomic weight of copper M = 63.5 Avagadro's number N = 6.02 × 1026 mol-1 Number of atoms per unit cell n = 4 Solution Problem 1.8 α-iron of atomic weight 55.85 solidifies into BCC structure and has a density 7860 kg m-3. Calculate the radius of an atom. Given data Atomic weight M = 55.85 Density ρ = 7860 kg m-3 Number of atoms per unit cell for BCC = 2 Avagadro's number N = 6.023 × 1026 mol-1 Solution Substituting the given values, we have
Materials Science: Unit I: Crystallography : Tag: : Crystallography | Materials Science - Anna University Solved Problems
Materials Science: Unit I: Crystallography
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