![Introduction to Engineering
Materials
⢠Structure, Classification, and Bonding
⢠[Your Name] | [Date] | [Institution]](https://image.slidesharecdn.com/engineeringmaterialsintro-250503095053-c24fa229/85/Engineering_Materials_Introduction-for-education-1-320.jpg)
Engineering_Materials_Introduction for education
- 1. Introduction to Engineering Materials ⢠Structure, Classification, and Bonding ⢠[Your Name] | [Date] | [Institution]
- 2. Introduction ⢠⢠Engineering materials are the backbone of technology. ⢠⢠Used in construction, electronics, transportation, etc. ⢠⢠Understanding their structure helps predict behavior.
- 3. Classification of Engineering Materials ⢠⢠Metals and Alloys ⢠⢠Ceramics and Glasses ⢠⢠Polymers ⢠⢠Composites ⢠⢠Semiconductors
- 4. Levels of Structure in Materials ⢠⢠Macrostructure ⢠⢠Microstructure ⢠⢠Substructure ⢠⢠Crystal Structure ⢠⢠Electronic Structure
- 5. Structure-Property Relationships ⢠⢠Mechanical: strength, ductility ⢠⢠Electrical: conductivity, resistance ⢠⢠Thermal: expansion, conductivity ⢠⢠Example: tempered vs. normal glass
- 6. Atomic Bonding in Materials ⢠⢠Bonding influences material behavior. ⢠⢠Main types: Ionic, Covalent, Metallic, Hydrogen, Van der Waals
- 7. Ionic Bonding ⢠⢠Between metals and non-metals ⢠⢠Electron transfer forms ions ⢠⢠Example: NaCl
- 8. Covalent Bonding ⢠⢠Electrons are shared ⢠⢠Strong directional bonds ⢠⢠Example: Diamond, Si
- 9. Metallic Bonding ⢠⢠'Sea' of delocalized electrons ⢠⢠Good electrical & thermal conductivity ⢠⢠Example: Copper, Aluminum
- 10. Hydrogen & Van der Waals Bonding ⢠⢠Weak secondary interactions ⢠⢠Hydrogen bonds: e.g., water ⢠⢠Van der Waals: e.g., noble gases
- 11. Crystal Structure â Basic Definitions ⢠⢠Unit cell: smallest repeating unit ⢠⢠Coordination number: number of nearest neighbors ⢠⢠Packing efficiency: how densely atoms are packed
- 12. Space Lattice ⢠⢠3D arrangement of points (atoms) ⢠⢠14 Bravais lattices ⢠⢠Common types: SC, BCC, FCC