PART B Q1 (a) Figure 5 shows the type of point defects that may presence in a metal. Compare the characteristics between the point defects occurred at point 1 and point 3. Figure 5: Possible point defects in a metal material (b) The equilibrium number of vacancies in an aluminium plate at the temperature of 500 °C is 7.57 x 1023 m³. The atomic weight and density for aluminium are 26.98 g/mol and 2.62 g/cm², respectively. Calculate the activation energy for vacancy formation in aluminium. (c) Describe with illustration a point defect that may presence in silicon dioxide crystal structure. Q2 (a) Discuss with suitable example the influence of crystal structure of the solvent iron, Fe lattice to the diffusivity of carbon atom in the formation of a steel alloy. (b) Discuss the possible diffusion that take places in the making of electronic integrated circuit wafer with help of suitable diagram.

PART B Q1 (a) Figure 5 shows the type of point defects that may presence in a metal. Compare the characteristics between the point defects occurred at point 1 and point 3. Figure 5: Possible point defects in a metal material (b) The equilibrium number of vacancies in an aluminium plate at the temperature of 500 °C is 7.57 x 1023 m³. The atomic weight and density for aluminium are 26.98 g/mol and 2.62 g/cm², respectively. Calculate the activation energy for vacancy formation in aluminium. (c) Describe with illustration a point defect that may presence in silicon dioxide crystal structure. Q2 (a) Discuss with suitable example the influence of crystal structure of the solvent iron, Fe lattice to the diffusivity of carbon atom in the formation of a steel alloy. (b) Discuss the possible diffusion that take places in the making of electronic integrated circuit wafer with help of suitable diagram.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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