Table of Contents
- 1 Why microstructure are different for different metals?
- 2 How do polymers differ from metals and ceramics?
- 3 What is the significance of the microstructure of a material How do you define microstructure?
- 4 What determines the microstructure of an alloy?
- 5 Why plastics and ceramics are used as insulators?
- 6 What is the microstructure of polymers?
- 7 What is the difference between a metal and a polymer?
Why microstructure are different for different metals?
The crystalline structure of metals further changes as the metal is worked ( forged, hammered, rolled, extruded,etc) with the crystals being elongated, bent, fractured, and generally deformed plastically.
How do polymers differ from metals and ceramics?
Ceramics are typically compounds consisting of metals covalently bonded to oxygen, nitrogen or carbon. Ceramics are used for high temperature applications, abrasives, transparent windows and pottery. Polymers are light-weight, ductile, usually non-conductive and melt at relatively low temperatures.
What are the differences between polymers and metals?
The key difference between polymers and metals is that the polymers are lightweight than the metals. However, metals have a lustrous appearance, and high thermal and electrical conductivity. Moreover, the strength to weight ratio of polymer materials is higher than that of metals.
Why do ceramics and metals behave differently?
The two most common chemical bonds for ceramic materials are covalent and ionic. For metals, the chemical bond is called the metallic bond. The bonding of atoms together is much stronger in covalent and ionic bonding than in metallic. That is why, generally speaking, metals are ductile and ceramics are brittle.
What is the significance of the microstructure of a material How do you define microstructure?
Microstructure is the very small scale structure of a material, defined as the structure of a prepared surface of material as revealed by an optical microscope above 25× magnification. Even if those pores play a very important role in the definition of the characteristics of a material, so does its composition.
What determines the microstructure of an alloy?
Three variables that determine the microstructure of an alloy are (1) the alloying elements present, (2) the concentrations of these alloying elements, and (3) the heat treatment of the alloy.
What is the difference between metals and ceramics?
Metals are solid substances, which are opaque in nature and have an excellent electric conductance. Metals have the property of ductility and malleability. A nonmetallic inorganic material made up of a mixture of metal and non-metal compounds is known as ceramic. Ceramic materials are brittle and hard by nature.
How would you differentiate metals from ceramics materials?
Why plastics and ceramics are used as insulators?
Electrical Insulation A material that is unable to conduct electricity due to its high level of electrical resistance is an insulator. In contrast, a conductor is a material that offers low resistance to electric conductivity. For these reasons, ceramics have long been used as insulators.
What is the microstructure of polymers?
(more)Loading…. The microstructure of polymers depend on many factors too numerous to define here but generally fall into 2 groups amorphous and crystalline. Metals are generally crystalline and ceramics can be either, for example glass is amorphous where as pottery is crystalline.
What is the difference between a polymer and a ceramic?
With regard to mechanical behaviour, these materials are hard but very brittle. These materials are widely categorized into oxide and non-oxide ceramics. Polymers are organic substances and derivatives of carbon and hydrogen.
What are the physical properties of ceramics?
Ceramics are typically insulative to the passage of electricity and heat, and are more resistant to high temperatures and harsh environments than metals and polymers. With regard to mechanical behaviour, these materials are hard but very brittle.
What is the difference between a metal and a polymer?
Metals are generally crystalline and ceramics can be either, for example glass is amorphous where as pottery is crystalline. Polymers are generally made of long chain hydrocarbons (though silicon based do exist) they can exist at room temperature as a liquid or solid, but for this explanation I will only discuss solids.