STRONTIUM BORIDE

STRONTIUM BORIDE 화학적 특성, 용도, 생산

• 화학적 성질

  -325 mesh 10μm or less with 99.5% purity; refractory material [KIR78] [CER91]

• 물리적 성질

  Strontium boride appears as a crystalline black powder. Closer examination reveals slightly translucent dark red crystals capable of scratching quartz. It is very stable and has a high melting point and density. Although not thought to be toxic, it is an irritant to the skin, eyes, and respiratory tract. It has the formula of SrB6, with a molecular weight of 152.49 g/mol. It is a black crystalline solid (15.0 °C) with a density of 3.39 g/cm³, and a melting point of 2235.0°C. Strontium boride, along with other alkali earth metal borides, has been shown to exhibit weak ferromagnetism at low temperatures.

• 용도

  Strontium boride is used in insulation and nuclear control rods.

• 제조 방법

  Strontium boride can be formed directly from the elements. Sr melts at 777°C and boron melts at 2076 °C. Therefore, if a vapor of Sr metal at >850°C (red-heat) is passed over crystals of boron, reaction forms the desired boride. However, to obtain stoichiometric compositions, it is better to heat the well-mixed powders of Sr and B to obtain specific compounds:
  Sr+ 6B→SrB₆

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