spheroidal graphite - ορισμός. Τι είναι το spheroidal graphite
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Τι (ποιος) είναι spheroidal graphite - ορισμός

TYPE OF CAST IRON
Nodular iron; Nodular cast iron; Ductile cast iron; Spheroidal graphite cast iron; Spheroidal graphite iron; SG iron; SG cast iron
  • Another micrograph showing the carbon islanding effect, with nodules surrounded by areas depleted of carbon

Ductile iron         
Ductile iron, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spheroidal graphite cast iron. and SG iron, is a type of graphite-rich cast iron discovered in 1943 by Keith Millis.
Graphite         
  • Theoretically predicted [[phase diagram]] of carbon
  • Advert for Crane's Black Lead, c. 1905
  • Molar volume against pressure at room temperature
  • Graphite plates and sheets, 10–15 cm high; mineral specimen from Kimmirut, [[Baffin Island]]
  • Large graphite specimen. [[Naturalis Biodiversity Center]], [[Leiden]], Netherlands.
  • alt=Graphite pencils
  • Graphited Wood Grease 1908 ad in the Electric Railway Review
ALLOTROPE OF CARBON, MINERAL, SUBSTANCE
Natural graphite; Black Lead; Plumbago (mineral); Graphitic; Graphite electrodes; Flake graphite; Carbon electrode; Graphite foil; Graphite ink; Rhombohedral graphite
·noun Native carbon in hexagonal crystals, also foliated or granular massive, of black color and metallic luster, and so soft as to leave a trace on paper. It is used for pencils (improperly called lead pencils), for crucibles, and as a lubricator, ·etc. Often called plumbago or black lead.
Graphite         
  • Theoretically predicted [[phase diagram]] of carbon
  • Advert for Crane's Black Lead, c. 1905
  • Molar volume against pressure at room temperature
  • Graphite plates and sheets, 10–15 cm high; mineral specimen from Kimmirut, [[Baffin Island]]
  • Large graphite specimen. [[Naturalis Biodiversity Center]], [[Leiden]], Netherlands.
  • alt=Graphite pencils
  • Graphited Wood Grease 1908 ad in the Electric Railway Review
ALLOTROPE OF CARBON, MINERAL, SUBSTANCE
Natural graphite; Black Lead; Plumbago (mineral); Graphitic; Graphite electrodes; Flake graphite; Carbon electrode; Graphite foil; Graphite ink; Rhombohedral graphite
Carbon; one of three allotropic modifications of this element. It occurs in nature as a mineral. It is used as a lubricant for machinery; for commutator brushes; for making surfaces to be plated conductive, and for mixing with manganese binoxide in Leclanché cells.

Βικιπαίδεια

Ductile iron

Ductile iron, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spheroidal graphite cast iron and SG iron, is a type of graphite-rich cast iron discovered in 1943 by Keith Millis. While most varieties of cast iron are weak in tension and brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions.

On October 25, 1949, Keith Dwight Millis, Albert Paul Gagnebin and Norman Boden Pilling received US patent 2,485,760 on a cast ferrous alloy for ductile iron production via magnesium treatment. Augustus F. Meehan was awarded a patent in January 1931 for inoculating iron with calcium silicide to produce ductile iron subsequently licensed as Meehanite, still produced as of 2017.