P1
Structure;
Ceramic – Glass-ceramic I have chosen glass-ceramic to write about, however, I have no knowledge on this so I will have to use quite a bit of referencing to get the information. Facts;
Glass-ceramics have an amorphous phase and one or more crystalline phases and are produced by a feature called "controlled crystallization" in contrast to a spontaneous crystallization, which is usually not wanted in glass manufacturing. They don’t find it ideal to have "spontaneous crystallization" because they cannot have a perfectly formed shape and it is ideal for engineers to obtain the shape they want.
It is usually said that ceramics have an amorphous property, which means that there is not visible shape. However there are …show more content…
Facts;
Graphene is one of the many forms of carbon. It being a form of carbon gives it the name "allotrope of carbon". The material consists of one layer of thick hexagonal lattice with one atom at each vertex (a vertex is a point where two or more curves, lines, or edges meet).
It has the basic structure of any other form of carbon there is. For example, other forms of carbon are; Graphite, carbon nanotubes and charcoal.
Structure;
Each atom has four bonds, one sigma bond with each of its three surrounding areas and one pi bond that is oriented out of plane. The atoms are about 1.42 Å (Ångström) apart.
Graphene's hexagonal lattice can be regarded as two interleaving triangular lattices. This perspective was successfully used to calculate the band structure for a single graphite layer using a tight-binding approximation
Graphene can self-repair holes that are in their sheets, after the exposure to other molecules containing carbon.
Properties;
It has been discovered that graphene has some really strange and unusual properties, such …show more content…
Physical properties are used to observe and describe the matter that they are testing for.
Properties;
• Density – Density is a figure that tells us how many kilograms of a uniform substance is contained in a volume of 1m³. Density is also defined as the ratio of mass to the volume and is given the symbol ρ (Greek symbol).
• Melting point – Pure elements usually have a clear temperature at which they will start melting and slowly starts to become a liquidised version of that element. However, there are some materials that may not have a melting point because once they are heated up they may burn or even evaporate. E.G. wood.
Engineers must take the melting point into consideration every time they make a product because it is one of the most common properties in all materials. They will have to run tests before they make the product.
Thermal Properties
• Thermal conductivity - The thermal conductivity is the rate that it takes for heat transfer to take place through a material in steady state. It cannot be easily measured, especially for materials with low conductivity. As with electrical conductivity, sometimes we need materials that are good conductors and with this we may also need good insulators. Good conductors are needed for heat exchangers and good insulators are needed for the insulation of
Structure;
Ceramic – Glass-ceramic I have chosen glass-ceramic to write about, however, I have no knowledge on this so I will have to use quite a bit of referencing to get the information. Facts;
Glass-ceramics have an amorphous phase and one or more crystalline phases and are produced by a feature called "controlled crystallization" in contrast to a spontaneous crystallization, which is usually not wanted in glass manufacturing. They don’t find it ideal to have "spontaneous crystallization" because they cannot have a perfectly formed shape and it is ideal for engineers to obtain the shape they want.
It is usually said that ceramics have an amorphous property, which means that there is not visible shape. However there are …show more content…
Facts;
Graphene is one of the many forms of carbon. It being a form of carbon gives it the name "allotrope of carbon". The material consists of one layer of thick hexagonal lattice with one atom at each vertex (a vertex is a point where two or more curves, lines, or edges meet).
It has the basic structure of any other form of carbon there is. For example, other forms of carbon are; Graphite, carbon nanotubes and charcoal.
Structure;
Each atom has four bonds, one sigma bond with each of its three surrounding areas and one pi bond that is oriented out of plane. The atoms are about 1.42 Å (Ångström) apart.
Graphene's hexagonal lattice can be regarded as two interleaving triangular lattices. This perspective was successfully used to calculate the band structure for a single graphite layer using a tight-binding approximation
Graphene can self-repair holes that are in their sheets, after the exposure to other molecules containing carbon.
Properties;
It has been discovered that graphene has some really strange and unusual properties, such …show more content…
Physical properties are used to observe and describe the matter that they are testing for.
Properties;
• Density – Density is a figure that tells us how many kilograms of a uniform substance is contained in a volume of 1m³. Density is also defined as the ratio of mass to the volume and is given the symbol ρ (Greek symbol).
• Melting point – Pure elements usually have a clear temperature at which they will start melting and slowly starts to become a liquidised version of that element. However, there are some materials that may not have a melting point because once they are heated up they may burn or even evaporate. E.G. wood.
Engineers must take the melting point into consideration every time they make a product because it is one of the most common properties in all materials. They will have to run tests before they make the product.
Thermal Properties
• Thermal conductivity - The thermal conductivity is the rate that it takes for heat transfer to take place through a material in steady state. It cannot be easily measured, especially for materials with low conductivity. As with electrical conductivity, sometimes we need materials that are good conductors and with this we may also need good insulators. Good conductors are needed for heat exchangers and good insulators are needed for the insulation of