Chromium disilicide Powder CrSi2 (Chromium silicide Powder)

Chromium disilicide (CrSi₂) powder is a silicide of the refractory metal chromium (Cr). Metal silicides are widely used in ceramic powder materials due to their unique properties, such as high thermal stability, excellent oxidation resistance, and good electrical conductivity.

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Formula

Chromium disilicide, CrSi2

CAS Number

12018-09-6

Purity

99.0% min

Synonyms

Chromium disilicide powder, Chromium disilicide refractory powder, Chromium disilicide thermal spray powder, Chromium disilicide ceramic Powder

Particle Sizes

325 mesh or be customized

Shape

Spherical or irregular

Melting Point

1490 °C

Appearance

Gray powder

Density

4.7 g/cm 3

Description of Chromium disilicide Powder

Chromium disilicide refractory powder is typically produced through methods like high-temperature solid-state reactions, where chromium and silicon powders are mixed and heated to temperatures above 1200°C in an inert atmosphere. Another common production method is self-propagating high-temperature synthesis (SHS), which allows for efficient and rapid synthesis of the material.

CrSi₂ powder exhibits exceptional properties, including a high melting point, excellent mechanical strength at elevated temperatures, and resistance to oxidation in harsh environments. As a result, it is commonly used in specific applications such as high-temperature superalloys, where it improves oxidation resistance and mechanical performance. Additionally, chromium disilicide can be utilized as a raw material in the production of thermal barrier coatings for gas turbine components, ensuring they can withstand extreme heat while maintaining structural integrity. Its versatility also makes it suitable for use in electrical contact materials and semiconductor devices, where its conductivity and thermal properties are critical for performance

Chemical Composition of Chromium disilicide Powder

CrSi2CrSiCPFeS
>99%47.5%51.550.09%0.02%0.19%0.015%

Application of Chromium disilicide Powder

High-Temperature Superalloys: Used as an additive in nickel-based superalloys for turbine engines, enhancing oxidation resistance and mechanical strength at elevated temperatures.

Refractory Materials: Incorporated into refractory bricks for steelmaking furnaces and aluminum smelting, providing durability and resistance to extreme heat.

Semiconductor Devices: Serves as a material for ohmic contacts and heat sinks in power semiconductor devices, improving thermal management and electrical performance.

Thermal Barrier Coatings: Applied in thermal barrier coatings for gas turbine components, protecting them from heat and oxidation to extend lifespan and efficiency.

Chromium disilicide Powder Scholar Articles

Synthesis of heat resistant nanocrystalline powders, single crystals and coatings of chromium disilicide

Abstract: Chromium disilicide, in the form of nanocrystalline powders, single crystals, and coatings, was obtained by different methods of synthesis. Morphology of CrSi2 was studied by scanning electron microscopy (SEM). X-ray powder diffractaction confirmed the hexagonal phase structure of CrSi2 for all samples. DSC/TGA analysis have shown that the nanocrystalline powder begin to oxidize at 800 ºC, whereas crystals and coatings are resistant to oxidation only up to 700ºC in air.