1. Electrical Age (Silicon Age), Nano-engineered Materials
1.1. Exists almost 60 years ago
1.2. important technical developments
2. Classification
2.1. Metal
2.1.1. crystalline
2.1.2. good thermal & electric conductor
2.1.3. Properties at room temperature (RT)
2.1.3.1. Strong and ductile
2.1.3.2. stiff
2.1.3.3. dense
2.1.3.4. good strength
2.1.3.5. resistance to fracture
2.2. Ceramic
2.2.1. Inorganic materials
2.2.2. Oxides, nitrides, carbides
2.2.3. Crystalline, non-crystalline, or a mixture of both
2.2.4. Properties at RT
2.2.4.1. High melting point
2.2.4.2. High chemical stabilities
2.2.4.3. High hardness
2.2.4.4. High temperature strength
2.2.4.5. Brittle
2.2.4.6. Poor electrical and thermal conductor
2.3. Polymer
2.3.1. Plastic and rubber materials
2.3.2. Organic materials
2.3.3. Non-crystalline
2.3.4. Properties at RT
2.3.4.1. Low Density
2.3.4.2. Mechanically flexible
2.3.4.3. poor electric conductor
2.4. Composite
2.4.1. Mixture of two or more types of materials
2.4.2. A matrix phase + a reinforcing phase
2.4.3. Designed to ensure a combination of the best properties of each component material
2.4.4. ADVANCED MATERIALS
2.4.4.1. Semiconductor
2.4.4.1.1. Electrical properties intermediate between conductors and insulators
2.4.4.1.2. extremely sensitive to the presence of minute concentration of impurity atoms
2.4.4.1.3. Conductivity increasing with temperature
2.4.4.2. BIOMATERIALS
2.4.4.2.1. Components implanted into human body for replacement of diseased or damaged parts
2.4.4.2.2. Must not produce toxic substances
2.4.4.2.3. Compatible with body tissues
2.4.4.3. SMART MATERIALS
2.4.4.3.1. able to sense changes in their environments and then respond to these changes in predetermined manners
2.4.4.3.2. NANO-ENGINEERED MATERIALS
3. What is EM?
3.1. Material
3.1.1. Substances from which something is composed or made from
3.1.2. natural
3.1.2.1. wood
3.1.3. human made
3.1.3.1. plastic
3.2. Material Science
3.2.1. The scientific study of the properties and applications of materials
3.2.2. relationship between structure and properties of materials
3.2.3. nanomaterials and biomaterials
3.3. Engineering Material
3.3.1. materials that are used as raw material for any sort of construction or manufacturing in an organized way of engineering application
3.4. Material Engineering
3.4.1. Used of Materials Science knowledge (fundamental) to design and to produce materials with properties that will meet the requirements of society
3.5. Materials Science and Engineering (MSE)
3.5.1. Resultant knowledge of the structure, properties, processing, and performance of engineering materials
3.6. Materials Used in Daily Life
3.6.1. Electrical & Electronic
3.6.1.1. Gadget
3.6.1.2. Home Appliances
3.6.1.3. Electric Power
3.6.2. Civil and Structural
3.6.3. Aerospace
3.6.4. Chemical
3.6.5. Infrastructural and Transportation
4. Evolution
4.1. Stone
4.1.1. make tools and weapons
4.1.2. stone, wood, clay, horn and skin
4.2. Bronze
4.2.1. copper+tin
4.2.2. most tools and weapons were made from bronze
4.3. Iron
4.3.1. Last stage of the archaeological sequence
4.4. Steel
4.4.1. Start of modern eras.
4.4.2. iron and carbon (steel),
4.4.3. stronger and cheaper