7/21/2019 Material Science Exam 1 Study guide

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CHE 253 Study Guide for Exam I (Spring 2015)

Chapter 1 Introduction

1.  Classification of materials; important criteria in the materials selection

process.

Chapter 2 Atomic Structure and Interatomic Bonding

2.  Briefly describe atomic structure.

3.  Electronic configuration of elements.

4.  Valence electrons and electronegativity.

5.  Types of bonds (primary and secondary)

6.  Bond energy curve. How does it help to predict material properties?

Chapter 3 Structures of Metals and Ceramics

7.  How to calculate coordination numbers.

8. 

Polymorphic and allotropic materials. Isotropic vs anisotropic materials9.  Explain crystal structure using the concepts of lattice and unit cell.

10. Lattice parameters (a) and APF for BCC, FCC, HCP (Calculation Problem!)

11. Determine the coordination numbers and geometrics for various cation-anion

radius (rc/rA) ratios in ceramic crystal structures. ( Calculation Problem!)

12. Determine the Miller Indices of a point, directions and planes.

13. Bragg’s Law to solve for the interplanar spacing or the angle of incidence.

(Calculation Problem!)

Chapter 5 Imperfections in Solids14. Describe Schottky and Frenkel defects.

15. Distinguish between edge, screw, mixed dislocations.

16. Planar defects

17. Describe the 3 defect types based on their dimensionality.

18. Determine if an impurity can form a substitutional or interstitial solid

solution.

19. Calculate the number of vacancies in metals and ceramics. (Calculation

Problem!)

Chapter 6 Diffusion

20. Mechanisms of diffusion (vacancy vs interstitial diffusion).

21. What are Fick’s First and Second Laws of Diffusion

22. Apply Fick’s Laws to a diffusion problems. (Calculation Problem!)