Unit 1932: Materials Science Fundamentals

1. Introduction to Materials Science

• Definition and scope of materials science
• Importance in engineering, technology, and everyday applications
• Interdisciplinary nature: physics, chemistry, and engineering
• Classification of materials: metals, ceramics, polymers, composites

2. Atomic Structure and Bonding

• Atomic models and electron configuration
• Atomic bonding types:
  • Ionic bonding
  • Covalent bonding
  • Metallic bonding
• Relationship between bonding and material properties (e.g., conductivity, strength)

3. Crystal Structures and Defects

• Crystal lattice and unit cells
• Common crystal structures:
  • Body-Centered Cubic (BCC)
  • Face-Centered Cubic (FCC)
  • Hexagonal Close-Packed (HCP)
• Types of crystal defects:
  • Point defects (vacancies, interstitials)
  • Line defects (dislocations)
  • Planar defects (grain boundaries)
• Impact of defects on material properties

4. Mechanical Properties of Materials

• Elasticity and plasticity
• Strength: tensile, compressive, shear
• Toughness and fracture mechanics
• Hardness and its measurement
• Mechanical testing methods:
  • Tensile testing
  • Hardness testing (Brinell, Rockwell, Vickers)
  • Impact testing (Charpy, Izod)

5. Thermal Properties of Materials

• Thermal conductivity and diffusivity
• Thermal expansion and coefficients of expansion
• Specific heat capacity
• Thermal stability and heat resistance
• Applications requiring thermal considerations

6. Electrical and Magnetic Properties

• Electrical conductivity and resistivity
• Dielectric properties: permittivity
• Magnetic properties: permeability, ferromagnetism, paramagnetism, diamagnetism
• Role in electronic devices, sensors, and magnets

7. Optical Properties of Materials

• Interaction of light with materials
• Absorption, reflection, transmission, and scattering
• Refractive index and optical transparency
• Photonic and optoelectronic applications

8. Material Processing and Manufacturing

• Overview of processing techniques
• Casting methods
• Machining and forming processes
• Additive manufacturing (3D printing)
• Influence of processing on material properties

9. Material Testing and Characterization

• Microscopy techniques:
  • Optical microscopy
  • Electron microscopy (SEM, TEM)
• Spectroscopy methods:
  • X-ray diffraction (XRD)
  • Energy-dispersive X-ray spectroscopy (EDS)
• Mechanical testing review
• Importance of characterization in quality control

10. Material Selection and Design

• Criteria for selecting materials:
  • Mechanical and physical performance
  • Cost and availability
  • Environmental impact and sustainability
• Case studies on material selection
• Introduction to materials databases and selection software