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    • Zirconio - Crogiolo

      Zirconium was discovered in Berlin, Germany, in 1789 by M.H. Klaproth, but was not isolated until 1824 by J.J. Berzelius in Stockholm, Sweden. Zirconium is a hard, lustrous, silvery coloured metal which is extracted from its ores (the oxide or zircon, ZrSiO₄) by conversion to the tetrahalide followed by reduction with magnesium. The metal is extremely corrosion resistant due to the formation of a stable oxide film and is unaffected by acids (with the exception of HF) and alkalis. As a result of its corrosion resistance, zirconium is widely used in the chemical industry where corrosive agents are used. Also, due to its excellent high temperature properties, coupled with its low neutron absorption, it is used in the construction of nuclear reactors. The pure metal is also used as a lining in jet engines. Zirconium is used as an alloying element, the resultant alloys having improved mechanical properties. Zirconium oxide, zirconia (ZrO₂), is used as an opacifier in vitreous enamels as well as a pigment. However, the main applications of zirconia make use of its excellent strength and high temperature properties, and it is used to manufacture foundry crucibles, bricks, ceramics and abrasives. It has sufficient strength to enable it to be used to fabricate high precision knife blades. The chemical properties of zirconium are very similar to those of hafnium. As a result, the normal chemical processes used for the extraction of zirconium will not remove hafnium, which can be present in commercial grades of zirconium at levels as high as 4.5%. A high purity grade of zirconium containing less than 0.01% hafnium is used for nuclear applications.Crogiolo - Un contenitore in cui altri materiali possono essere riscaldati o fusi, solitamente a temperature elevate.

    14 risultati

    Prodotto
    Prodotto ZR00-CB-000105 Zirconio - Crogiolo Capacità 5ml Diametro esterno 21mm Diametro interno 19mm Altezza 19mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000110 Zirconio - Crogiolo Capacità 10ml Diametro esterno 27mm Diametro interno 25mm Altezza 22mm Quantity 1 Piece - 5 Piece
    Prodotto ZR00-CB-000115 Zirconio - Crogiolo Capacità 15ml Diametro esterno 33mm Diametro interno 31mm Altezza 22mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000120 Zirconio - Crogiolo Capacità 20ml Diametro esterno 33mm Diametro interno 31mm Altezza 29mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000125 Zirconio - Crogiolo Capacità 25ml Diametro esterno 47mm Diametro interno 45mm Altezza 22mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000135 Zirconio - Crogiolo Capacità 35ml Diametro esterno 47mm Diametro interno 45mm Altezza 29mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000145 Zirconio - Crogiolo Capacità 45ml Diametro esterno 47mm Diametro interno 45mm Altezza 34mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000155 Zirconio - Crogiolo Capacità 55ml Diametro esterno 47mm Diametro interno 45mm Altezza 41mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000175 Zirconio - Crogiolo Capacità 75ml Diametro esterno 51mm Diametro interno 49mm Altezza 41mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000180 Zirconio - Crogiolo Capacità 100ml Diametro esterno 59mm Diametro interno 57mm Altezza 45mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000185 Zirconio - Crogiolo Capacità 250ml Diametro esterno 83mm Diametro interno 81mm Altezza 57mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000190 Zirconio - Crogiolo Capacità 500ml Diametro esterno 104mm Diametro interno 102mm Altezza 63mm Quantity 1 Piece - 10 Piece
    Prodotto ZR00-CB-000195 Zirconio - Crogiolo Capacità 1000ml Diametro esterno 127mm Diametro interno 125mm Altezza 89mm Quantity 1 Piece
    Prodotto ZR00-CB-000198 Zirconio - Crogiolo Capacità 1500ml Diametro esterno 152mm Diametro interno 150mm Altezza 99mm Quantity 1 Piece
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