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    • Germanium - Rod

      Discovered in 1886 by C.A. Winkler at Freiberg, Germany. Germanium is a silvery white brittle metalloid member of the carbon group of elements, its physical properties being similar to those of silicon, the element which precedes it in the group. Other elements within the carbon group are relatively common, but germanium is found only in trace amounts in some coals and as a minor component in some ores, the principle one being argyrodite, a double sulphide of silver and germanium (the mineral from which germanium was first isolated). It has an abundance within the Earth's crust of 1.8 ppm and the element is produced by reduction of the oxide, ultra-high purity material being obtained by zone refining (a process in which the element is formed into a rod which is then heated at one end to produce a narrow molten zone. The heater is moved along the length of the rod so that the molten zone travels from one end of the rod to the other. Impurities are more soluble in the molten metal than in the solid and thus concentrate in the liquid zone as it moves to one end of the rod). Germanium is stable in air and water and is unaffected by alkalis and acids, with the exception of nitric acid. It is a poor conductor of electricity but has exceptional properties as a semiconductor material and it is in this area where germanium is primarily used. However, other applications for the material include its use as an alloying element in the production of specific alloys and as an addition to glass in the manufacture of infrared devices.

      Rod - A straight length of circular section material.

    6 results

    Product GE00-RD-000110 99.999% Germanium Rod 2mm dia Purity 99.999% Diameter 2mm Length 10mm - 50mm
    Product GE00-RD-000120 99.999% Germanium Rod 5mm dia Purity 99.999% Diameter 5mm Length 25mm - 100mm
    Product GE00-RD-000130 99.999% Germanium Single Crystal Rod 6mm dia Purity 99.999% Diameter 6mm Length 6mm
    Product GE00-RD-000140 99.999% Germanium Rod 6.35mm dia Purity 99.999% Diameter 6.35mm Length 10mm - 100mm
    Product GE00-RD-000170 99.999% Germanium Single Crystal Rod 10mm dia Purity 99.999% Diameter 10mm Length 25mm
    Product GE00-RD-000171 99.999% Germanium Rod 10mm dia Purity 99.999% Diameter 10mm Length 30mm
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