Unformatted text preview: Assume a unit cell edge length of 0.332 nm. 5.22 Determine the ASTM grain size number if 25 grains per square inch are measured at a magnification of 75. 5.D1 Aluminum–lithium alloys have been developed by the aircraft industry to reduce the weight and improve the performance of its aircraft. A commercial aircraft skin material having a density of 2.47 g/cm 3 is desired. Compute the concentration of Li (in wt%) that is required. 5.D2 Gallium arsenide (GaAs) and indium arsenide (InAs) both have the zinc blende crystal structure and are soluble in each other at all concentrations. Determine the concentration in weight percent of InAs that must be added to GaAs to yield a unit cell edge length of 0.5820 nm. The densities of GaAs and InAs are 5.316 and 5.668 g/cm 3 , respectively....
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- Spring '12
- Crystal system, Chemical Properties, Atomic packing factor