Graphite materials

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Graphite materials

  1. 1. Graphite MaterialsGraphite Materials
  2. 2. DefinitionDefinition Graphite is anGraphite is anallotropic form ofallotropic form ofcarbon,carbon, known as plumbagoknown as plumbagoand black lead,and black lead, dark gray,dark gray, Crystalline - HCPCrystalline - HCP Greasy,Greasy, Soft, with a metallicSoft, with a metallicluster,luster, Good conductor ofGood conductor ofelectricity,electricity, Does not burn easilyDoes not burn easily
  3. 3. HistoryHistory Graphite was discovered aroundGraphite was discovered aroundthe mid 1500’s.the mid 1500’s. Synthetic graphite was made bySynthetic graphite was made byE.G. Ancheson.E.G. Ancheson. Natural graphite was discoveredNatural graphite was discoveredby Mr. Stephen Riddle.by Mr. Stephen Riddle. Today both natural and syntheticToday both natural and syntheticgraphite are a great benefit forgraphite are a great benefit fortoday’s society.today’s society.
  4. 4. Composition of GraphiteComposition of Graphite Graphite consist ofGraphite consist ofcarbon atoms, whichcarbon atoms, whichform sheets of linkedform sheets of linkedhexagons.hexagons. Each carbon atomEach carbon atomwithin a sheet formswithin a sheet formsstrong bonds to threestrong bonds to threeother carbon atoms, butother carbon atoms, butthe stacked sheets arethe stacked sheets areonly held together byonly held together byweak bonds.weak bonds. Graphite is know asGraphite is know asblack lead, when mixblack lead, when mixwith clay it forms thewith clay it forms the“lead” pencils.“lead” pencils.
  5. 5. ApplicationsApplications PencilsPencils Dry LubricantsDry Lubricants PaintsPaints Golf ClubGolf Club Foundry FacingsFoundry Facings Grate PolishGrate Polish
  6. 6. ApplicationsApplications PencilsPencils Dry LubricantsDry Lubricants PaintsPaints Golf ClubGolf Club Foundry FacingsFoundry Facings Grate PolishGrate Polish

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