Below are listed the atomic 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 what temperature will the diffusion coefficient for the diffu At what temperature will the diffusion coefficient for the diffusion of copper in nickel have a value of 6.5 ( 10-17 m2/s. Use the diffusion data in Table5.2.
I’m not sure how to calculate the phase margin at w(bw) and then I’m not sure how to calculate the phase margin at w(bw) and then how to proceed with the rest of the problem. Attachments: Screen-Shot-2….png
At temperatures near room temperature, the temperature dependenc At temperatures near room temperature, the temperature dependence of the conductivity for intrinsic germanium is found to equal where C is a temperature-independent constant and T is in Kelvins. Using Equation 18.36, calculate the intrinsic electrical conductivity of germanium at150째C.
. Now assume rRF remains at 9% but rM (1) increases to 16% or (2) falls to 13%. The . Now assume rRF remains at 9% but rM (1) increases to 16% or (2) falls to 13%. The slope of the SML does not remain constant. How would these changes affect ri?
Demonstrate that the relative permeability and the magnetic Demonstrate that the relative permeability and the magnetic susceptibility are related according to Equation 20.7.
Experimentally, it has been observed for single crystals of a Experimentally, it has been observed for single crystals of a number of metals that the critical resolved shear stress tcrss is a function of the dislocation density ?D as where t0 and A are constants. For copper, the critical resolved shear stress is 2.10MPa (305psi) […]
Estimate the theoretical fracture strength of a brittle material Estimate the theoretical fracture strength of a brittle material if it is known that fracture occurs by the propagation of an elliptically shaped surface crack of length 0.25 mm (0.01 in.) and having a tip radius of curvature of 1.2 ( 10-3 mm (4.7 ( 10-5 […]
Estimate the temperature at which GaAs has an electrical Estimate the temperature at which GaAs has an electrical conductivity of 3.7 3 1023 (V-m)21 assuming the temperature dependence for of Equation 18.36. The data shown in Table 18.3 might prove helpful.
Estimate the maximum and minimum thermal conductivity values for Estimate the maximum and minimum thermal conductivity values for a cermet that contains 85 vol% titanium carbide (TiC) particles in a cobalt matrix. Assume thermal conductivities of 27 and 69 W/m-K for TiC and Co, respectively.