AMA: Intro to Materials Science and Engineering

Stone Age

~ 2.6 million years ago – 3300 B.C.

Bronze Age

~ 3300 B.C. – 1200 B.C.

Iron Age

~ 1200 B.C – 600 B.C.

Modern & Advanced Materials

early 20th Century - Present

Materials Science

Investigates relationships that exist between the structures and properties of materials and develop and synthesize new materials

Material Chemistry, Material Physics, Materials and Process Engineering

Fill in the Blanks.

Materials Engineering

Design the structure of a material to produce a predetermined set of properties.

Materials Engineering

Create new products or systems using existing materials.

Materials Engineering

Develop techniques for processing materials.

Subatomic Level

Electronic structure of individual atoms that defines

interaction among atoms (interatomic bonding)

Atomic level

Arrangement of atoms in materials (for the same atoms can have different properties, e.g. two forms of carbon: graphite and diamond)

Microscopic Structure

Arrangement of small grains of material that can be identified by microscope.

Macroscopic Structure

Structural elements that may be viewed with the naked eye.

Physical Property

Properties that can be observed or measured without changing the composition of the material.

1.Density

2.Thermal

3.Electrical

4.Dimensional

5.Optical • Refractive index • Absorption • Transmission • Reflection • Scattering • Color

6.Magnetism

7.Permeability

8.Porosity

8 Physical Properties

Mechanical Property

Properties that involve a reaction to an applied load.

1.Hardness

2.Toughness

3.Elasticity

4.Plasticity

5.Ductility

6.Malleability

7.Brittleness

8.Tensile strength

9.Compressive strength

10.Shear strength

11.Fatigue strength

12.Impact resistance

13.Creep

14.Stiffness

15.Resilience

15 Mechanical Properties

Chemical Property

Properties that are discovered by observing chemical reactions.

1. Reactivity with acids

2. Reactivity with bases

3. Oxidation state

4. Corrosion resistance

5. Flammability

6. Toxicity

7. pH level

8. Heat of combustion

9. Electronegativity

10. Chemical stability

11. Radioactivity

12. Ability to tarnish

13. Enthalpy of formation

14. Solubility

15. Decomposition

15 Chemical Properties

Thermal Property

Properties of a material that is related to its ability to conduct heat.

1. Thermal conductivity

2. Specific heat capacity

3. Thermal expansion

4. Melting point

5. Boiling point

6. Thermal diffusivity

7. Heat of fusion

8. Heat of vaporization

9. Thermal emissivity

10. Glass transition temperature

11. Thermal shock resistance

11 Thermal Properties

Electrical Property

Properties of a material that is related to its ability to conduct electricity.

1.Electrical conductivity

2.Electrical resistivity

3.Dielectric constant

4.Dielectric strength

5.Permittivity

6.Electrical permeability

7.Power factor

8.Insulation resistance

9.Hall effect

10.Superconductivity

10 Electrical Properties

(Characterization) Structures, Properties, Processing, Performance

Materials Tetrahedron composed of?

Metal, Ceramic, Polymer, Composite

Classification of Materials Based on Types

Aerospace, Biomedical, Electronics, Energy Technology and Environmental, Magnetic, Optical, Structural, Smart Materials

Classification of Materials based on Functions

NATURAL Polymers (base on type)

DNA, Rubber, Cellulose, Wool: What kind of Material?

SYNTHETIC Polymers (base on type)

Nylon, Polyester, Teflon, Epoxy: What kind of Material?

Metals and Alloys (base on type)

What are these?

Composites (base on type)

These are?

Ceramics (base on type)

these are?

Strucrural Materials (base on Function)

these are?

Smart Materials (base on Function)

these are?

SUBATOMIC LEVEL STRUCTURE

What level of structure is this?

ATOMIC LEVEL STRUCTURE

What level of structure is this?

MICROSCOPIC STRUCTURE

What level of structure is this?

MACROSCOPIC STRUCTURE

What level of structure is this?