Calculate the force of attraction between a K+ and an Calculate the force of attraction between a K+ and an O2- ion the centers of which are separated by a distance of 1.5 nm.
Briefly explain why the magnitude of the absorption coefficient Briefly explain why the magnitude of the absorption coefficient (β in Equation 21.18) depends on the radiation wavelength.
Cadmium sulfide (CdS) has a cubic unit cell, and from Cadmium sulfide (CdS) has a cubic unit cell, and from x-ray diffraction data it is known that the cell edge length is 0.582 nm. If the measured density is 4.82 g/cm3, how many Cd2+ and S2- ions are there per unit cell?
Briefly explain why, upon solidification, an alloy of eutectic c Briefly explain why, upon solidification, an alloy of eutectic composition forms a microstructure consisting of alternating layers of the two solid phases.
Briefly explain why, for a small anode-to-cathode area ratio, Briefly explain why, for a small anode-to-cathode area ratio, the corrosion rate will be higher than for a large ratio.
Briefly explain why there is no bainite transformation region on Briefly explain why there is no bainite transformation region on the continuous cooling transformation diagram for an iron窶田arbon alloy of eutectoid composition.
Determine the relative amounts Determine the relative amounts (in terms of mass fractions) of the phases for the alloys and temperatures given in Problem 9.8. (a) 90 wt% Zn-10 wt% Cu at 400(C (750(F) (b) 75 wt% Sn-25 wt% Pb at 175(C (345(F) (c) 55 wt% Ag-45 wt% Cu at 900(C (1650(F) (d) 30 wt% […]
Below are listed the atomic weight, density, and atomic radius Below are listed the atomic weight, density, and atomic radius for three hypothetical alloys. For each determine whether its crystal structure is FCC, BCC, or simple cubic and then justify your determination. A simple cubic unit cell is shown in Figure3.24.
At temperatures between 775(C (1048 K) and 1100(C (1373 K), At temperatures between 775(C (1048 K) and 1100(C (1373 K), the activation energy and preexponential for the diffusion coefficient of Fe2+ in FeO are 102,000 J/mol and 7.3 ( 10-8 m2/s, respectively. Compute the mobility for an Fe2+ ion at 1000(C (1273 K).
Iron and vanadium both have the BCC crystal structure and Iron and vanadium both have the BCC crystal structure and V forms a substitutional solid solution in Fe for concentrations up to approximately 20 wt% V at room temperature. Determine the concentration in weight percent of V that must be added to iron to yield […]