Sponge zirconium Sponge hafnium
Introduction:
1、Zirconium metal is also known as zirconium sponge,it is sliver metal,looks like steel,and it is glossy.
2、Metal hafnium is also known as sponge hafnium,hafnium is silver metal,with metallic luster.
3、Name：zirconium；Chemical formula：Zr；Molecular weight：91；Melting point:≈1852℃；Boiling point：≈4377℃；Density：6.49g/cm3
4、Name：Harnium；Chemical formul：Hf；Molecular weight：178.49；Melting point：≈2227℃；Boiling point：≈4602℃；Density：13.31g/cm3
Application:
1，F(xiàn)irearms level zirconium sponge：be used for artillery burners,also can be applied to alloy additives,metallurgical deoxidization,chemical industry,civil flash fireworks,etc.
2，Industrial-grade zirconium sponge：it is mainly used in the production of chemical corrosion resistant equipment,electron Industry,Pipeline valve material,Special high strength and high temperature alloy aterial,electric vacuum and iighting bulb industry getter.
3，Nuclear grade zicronium sponge：it is mainly used in nuclear power plant,nuclear-powered aircraft carrier、structure material and uranium fuel rod cladding material of nucear reactor in a nuclear submarine、also be used as nuclear reactor core structure material,positioning framework,plug,moderator,etc.It is a kind of important strategic metal.
4、Physical condition：hafnium and zirconium look the same,nature is similar,the major difference is that the nuclear properties is queite different,for example,the thermal neutron capture cross section of zirconium is smaller hundreds of times than hafnium.Be used in atomic energy industry and aerospace industry,be used for the control rod material in the nucear reactor,can be made for the small size and large energy rocket booster.
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