How material properties, such as glass transition temp, conductivity, and crystallinity, change with elevating temperatures! Meanwhile,...

How material properties, such as glass transition temp, conductivity, and crystallinity, change with elevating temperatures! Meanwhile, corrosion is another pressing issue in our daily life. What are the origin and underlying mechanisms? Why Metals oxidize so fast!? How do you extrude polymer into thin fibers for clothes, fences, and fibers? and how do your favorite sports connect with composite materials?

Solutions

Expert Solution

As the temperature increases glass transition changes into viscous or rubbery state.
As temperature increases for metals , the conductivity decreases due to the obstruction in flow of electrons.
The crystallinity increases with increase in temperature.
Corrosion is the undesired deterioration of metals due to chemical or electrochemical reactions from surroundings. It can be fast or slow process according to the type of corrosion and the surface which gets corroded. Smooth corrosion occurs by expansion of a small corrode on the surface of a metal. It is a very slow process.
Metals oxidise fast because they give up their electrons faster and due to their electro negativity is low, they give up electrons very easily. Hence they corrode very fast.

samet mamat answered 1 year ago

Next > < Previous

Related Solutions

Predict trends in glass transition and melting temperatures. Why are these properties considered in the design...

Predict trends in glass transition and melting temperatures. Why are these properties considered in the design of consumer products like plastic cups and ice trays?

Glass Transition Temperature and Molecular Motion List the order of the glass transition temperatures for polyethylene,...

Glass Transition Temperature and Molecular Motion List the order of the glass transition temperatures for polyethylene, polypropylene, polyvinyl chloride, and polystyrene. PE (-80), PP (-20), PVC (85), PS (100). Define the glass transition temperature in polymer materials. – Describe the reason for this vast range of glass temperatures among these 4 materials.

Explain why the melting and glass transition temperatures of a polymer depend on its molecular weight....

Explain why the melting and glass transition temperatures of a polymer depend on its molecular weight. Your answer should include reference to free volume theory. (12)

1. How to improve the mechanical properties (Hardness) and the physical properties (Conductivity)? How to prevent...

1. How to improve the mechanical properties (Hardness) and the physical properties (Conductivity)? How to prevent oxidation in a material`s chemical properties? 2. What is the difference in Cold work and hot work? Explain and give 2 examples of what application are use in each one. 3. How does the dislocations movement behave in metals and ceramics? Explain the difference. 4. Explain the recrystallization phenomenon.

Explain in detail how glass transition temperature and molecular mobilityrelate to the following: a.) a stable...

Explain in detail how glass transition temperature and molecular mobilityrelate to the following: a.) a stable drying process b.) a stable freezing process c.) a stable freeze-drying process

Explain in detail how glass transition temperature and molecular mobility relate to the following: a. A...

Explain in detail how glass transition temperature and molecular mobility relate to the following: a. A stable drying process b. A stable freezing process c. A stable freeze drying process

Describe how the conductivity of a metal and a semiconductor change with temperature and explain qualitatively...

Describe how the conductivity of a metal and a semiconductor change with temperature and explain qualitatively why this occurs. Explain how an insulator’s electron energy band structure prevents it from conducting electricity. Diagrams may be useful.

How does glass transition temperature relate to manufacturing process/ temperature? How does this manufacture then differ...

How does glass transition temperature relate to manufacturing process/ temperature? How does this manufacture then differ between crystalline vs. amorpohous structure? How does linear vs. nonlinear polymer effect the glass transition temperature?

When looking at the glass transition temperature, what happens when above and below it? How does...

When looking at the glass transition temperature, what happens when above and below it? How does this change between thermoplastic vs. thermosetting? Amorphous vs. Crystalline? Linear vs. nonlinear? When does glass formation happen vs. crystallization? When looking at the melting temperature, what happens when above and below it? How does this change between thermoplastic vs. thermosetting? Amorphous vs. Crystalline? Linear vs. nonlinear? When does solidification happen vs. crystallization?

Material science Describe the microstructure of fibreglass and how it will result into the properties required...

Material science Describe the microstructure of fibreglass and how it will result into the properties required to process a fibreglass product

Subjects