Graphite MaterialsGraphite Materials
History of GraphiteHistory of Graphite- Naturally discovered around 1565 in Cumberland,- Naturally discovered around 1565 ...
Graphite MaterialsGraphite MaterialsGraphite:Graphite: Is a form of carbon that occurs as a naturalIs a form of carbon tha...
PropertiesPropertiesComposition Structure:Composition Structure: Layers of hexagonally arrangedLayers of hexagonally arran...
ApplicationsApplications- When mixed with clay & other materials it forms the“lead” in lead pencils- Graphite is used in n...
ApplicationsApplications- When mixed with clay & other materials it forms the“lead” in lead pencils- Graphite is used in n...
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Graphite

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Graphite

  1. 1. Graphite MaterialsGraphite Materials
  2. 2. History of GraphiteHistory of Graphite- Naturally discovered around 1565 in Cumberland,- Naturally discovered around 1565 in Cumberland,BritainBritain- Also can be found naturally in Siberia, Germany &- Also can be found naturally in Siberia, Germany &the United Statesthe United States- Was named ‘graphite’ from the Greek word for- Was named ‘graphite’ from the Greek word forwritingwriting- Synthetically created by- Synthetically created byEdward G. AchesonEdward G. AchesonE.G. AchesonE.G. Acheson
  3. 3. Graphite MaterialsGraphite MaterialsGraphite:Graphite: Is a form of carbon that occurs as a naturalIs a form of carbon that occurs as a naturalmineral and is manufactured synthetically.mineral and is manufactured synthetically.- Greasy material- Greasy material- Strong conductor of electricity- Strong conductor of electricity- High strength & chemical stability at elevated- High strength & chemical stability at elevatedtemperaturestemperatures- Low coefficient of thermal expansion and high- Low coefficient of thermal expansion and highresistance to thermal shockresistance to thermal shock
  4. 4. PropertiesPropertiesComposition Structure:Composition Structure: Layers of hexagonally arrangedLayers of hexagonally arrangedcarbon atoms. Forming a HCPcarbon atoms. Forming a HCPcrystalline structure.crystalline structure.Appearance:Appearance: Black to gray with a metallic earthly luster.Black to gray with a metallic earthly luster.- Each carbon atom is bonded to- Each carbon atom is bonded tothree other carbon atoms stronglythree other carbon atoms stronglybut each layer is held togetherbut each layer is held togetherwith a weak bond due to van derwith a weak bond due to van derWaalsWaals
  5. 5. ApplicationsApplications- When mixed with clay & other materials it forms the“lead” in lead pencils- Graphite is used in nuclear reactors to act as a- Graphite is used in nuclear reactors to act as amoderator to slow down neutronsmoderator to slow down neutrons- Used in manufacturing as a lubricant to smooth- Used in manufacturing as a lubricant to smoothsurfaces so that castings can be removed from moldssurfaces so that castings can be removed from moldseasilyeasily- Is also used as to produce numerous objects such as- Is also used as to produce numerous objects such asdry lubricants, and paintsdry lubricants, and paints
  6. 6. ApplicationsApplications- When mixed with clay & other materials it forms the“lead” in lead pencils- Graphite is used in nuclear reactors to act as a- Graphite is used in nuclear reactors to act as amoderator to slow down neutronsmoderator to slow down neutrons- Used in manufacturing as a lubricant to smooth- Used in manufacturing as a lubricant to smoothsurfaces so that castings can be removed from moldssurfaces so that castings can be removed from moldseasilyeasily- Is also used as to produce numerous objects such as- Is also used as to produce numerous objects such asdry lubricants, and paintsdry lubricants, and paints

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