The Science and Engineering of Materials, Enhanced, 7th Edition, by Donald R. Askeland and Wendelin J. Wright and published by Cengage with WebAssign digital resources, helps future engineers understand the relationships between structure, processing, and properties of materials. This science-based approach highlights how the structure of materials at various length scales gives rise to materials properties. Updates emphasize how the connection between structure and properties leads to the synthesis of new materials and new applications of existing materials. Comprehensive coverage offers the flexibility to emphasize a general overview of materials, mechanical behavior or physical properties. In addition, WebAssign online resources let instructors easily customize this edition to course needs.

Question 1 uses the Arrhenius equation to determine the fraction of lattice points containing vacancies at a specific temperature.

Question 2 uses the Arrhenius equation to compare the rates of a chemical reaction between specific temperatures by calculating the ratio of the chemical reaction rates.

Question 3 determines the diffusivity of P in Ge at a certain temperature in order to produce a semiconductor through a doping process.

Question 4 uses diffusion coefficients for the diffusion of hydrogen through BCC iron and FCC aluminum at specific room temperatures to determine which material would be better suited as the material for a high-pressure hydrogen storage tank.

Question 5 assumes a specific diffusion coefficient to compute the number of kilograms of hydrogen that pass per hour through a 5-mm-thick sheet of palladium having an area of 0.20 m² at a specific temperature under steady state conditions.

Question 6 uses Fick's second law to calculate how much time is required to produce a satisfactory case depth if nitriding is carried out at a specific temperature.

Question 7 uses a 0.02% C steel to be carburized at a specific temperature in 4 h, with the carbon content 0.6 mm beneath the surface reaching 0.45% C, to calculate the carbon content required at the surface of the steel.

Question 8 calculates the required temperature to perform a Cu–Zn alloy homogenization treatment in a specific period of time.

Question 9 determines if diffusion of magnesium ions or diffusion of oxygen ions will limit the rate at which sintering of a ceramic part made from MgO at a specific temperature can be performed and the time that will be required at this temperature. This demo assignment allows many submissions and allows you to try another version of the same question for practice wherever the problem has randomized values.