Zirconium disilicide

• Zirkoniumdisilizid
• Zirconium silicide ( ambiguous )

Gray odorless solid

Fixed

4.88 g · cm -3

1520 ° C

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Zirconiumdisilicid is an inorganic chemical compound of zirconium from the group of silicides.

Production and representation

Zirconiumdisilicid can be obtained by reaction of zirconium or zirconium hydride with silicon.

Also possible is the preparation by reaction of zirconium with silicon tetrachloride.

It is also formed in the reaction of zirconium dioxide with silicon.

Properties

Zirconiumdisilicid is a metallic luster, gray and odorless crystalline solid with good thermal and electrical conductivity. He has orthorhombic crystal structure with space group Cmcm. It is insoluble in water and mineral acids other than hydrofluoric acid. Zirconiumdisilicid burns when ignited in air. It should be noted that in addition Zirconiumdisilicid are known more Zirconiumsilicide. So Zr3Si with a tetragonal crystal structure isotypic to that of Ti3P, Zr2Si with a melting point of 2110 ° C, a density of 6.22 and a tetragonal crystal structure isotypic to that of CuAl2, Zr3Si2 with a melting temperature of 2225 ° C and a tetragonal crystal structure isotypic to of the U3Si2, Zr5Si4 with a tetragonal crystal structure and Zirconiummonosilicid ZrSi with a melting temperature of 2095 ° C and two orthorhombic forms isotypic with those of iron boride or boride.

Use

Zirconiumdisilicid used in the semiconductor industry for the production of a sputter -resistant layers in electronic circuits.