ZrSi2 Zirconium Silicide
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ZrSi2 Zirconium Silicide

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Product Description

ZrSi2 Zirconium Silicide

Zirconium silicide


Molecular weight: 147.39






Character: grey square crystalline powder


Density (g / ml, 25 ℃): 4.88


Melting point (OC): 1620


Lattice constants: a = 0.372nm, B = 1.476nm, C = 0.367nm.


Microhardness (kg / mm2): 1063


Heat of formation (kJ / mol): 62.8



Function and application: used as raw material powder of fine ceramics, 

crucible for production of semiconductor film, carbon ceramic brake pad 

and brake disc. The mass fraction of zirconium disilicide is 10-15%. 

Adding this mass fraction of zirconium disilicide into the ceramic 

matrix composites can significantly reduce the sintering temperature 

of the materials.


Study on elasticity and anisotropy of zirconium silicide


The compounds formed by metal and silicon are metal silicides, which 

can be divided into two categories: 1. Refractory metal silicides 

refer to the periodic table IVB, VB, The silicides of VIB group elements, 

such as titanium silicide, zirconium silicide, tantalum silicide, 

tungsten silicide, etc., 2 precious metal and near precious metal silicide, 

silicide target, platinum silicide, cobalt silicide, etc. in a word, 

metal silicide is relatively hard material with metallic luster, high 

conductivity, positive resistance and humidity coefficient, and magnetic 

and refractory metal silicide in most cases It has high melting point, 

hardness and compressive strength, high creep strength at high temperature, 

medium density, tensile strength and good temperature mechanical properties. 

The reaction between metal and silicon reduces the activity of metal. 

Therefore, the chemical stability of silicides is quite good. The refractory 

metal silicides with high silicon content have good corrosion resistance 

and oxidation resistance at room temperature and high temperature Disadvantages 

of chemicals: it is brittle at room temperature, low impact toughness and 

insufficient thermal shock resistance. The physical and chemical properties 

of metal silicides entitles them many uses. First of all, silicides as 

high-temperature structural materials have good application prospects in 

aviation, aerospace, chemical industry. As high-temperature oxidation resistant 

coating, magnetic materials, integrated circuit electrode film and other 

functional materials, silicides have been widely studied and applied. 

For example, fe2si ordered alloy has excellent Soft magnetic properties, 

widely used in audio, video and magnetic head materials for card reader; 

such as v2si, CoSi2, Mo2Si, because of its excellent electrical conductivity, 

v2si is the first superconductive A15 phase found, its critical transition 

temperature is 17.1k; MoSi2 is widely used as the heating element of high 

temperature electric furnace because of its excellent conductivity and 

excellent oxidation resistance Like the high-temperature oxidation-resistant 

coating used in aerospace, metal silicide plays a very important role in the 

manufacturing of electronic devices. Because the resistance of silicide is 

lower than that of polysilicon, and the interface between silicide and silicon 

substrate is atomic level clean interface with good compatibility, it has been 

widely used as Schottky barrier and interconnection material in microelectronic 

manufacturing industry.

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