Tungsten Silicide WSi2 Powder CAS 12039-88-2

Overview of Tungsten Silicide (WSi2) Powder

Tungsten silicide (WSi2) powder is a special product that combines the extraordinary homes of tungsten and silicon. This compound powder, with its high melting point and chemical stability, finds applications in different industrial sectors, particularly in materials science and electronic devices. WSi2 powder’s unique qualities make it a vital product in modern-day innovation.

(Tungsten Silicide WSi2 Powder CAS 12039-88-2)

Characteristics of Tungsten Silicide (WSi2) Powder

High Melting Point

WSi₂ powder has a melting point of about 2165°C. This makes it suitable for high – temperature applications.

Good Conductivity

It conducts electricity well. Its electrical resistivity is around 20–50 μΩ·cm. This trait is useful in electronic devices.

Chemical Stability

WSi₂ resists corrosion in acids and alkalis. It also forms a protective oxide layer in air at high temperatures.

High Hardness

The powder has a Vickers hardness of 12–15 GPa. This makes it wear – resistant for mechanical uses.

Low Thermal Expansion

Its coefficient of thermal expansion is low, around 7.2×10⁻⁶/°C. This helps prevent cracks in thermal cycling.

Particle Size

Most WSi₂ powders have particles between 1–10 μm. Smaller sizes (nanoscale) are available for specific needs.

Color and Form

The powder is usually grayish – black. It can be pressed into shapes or used as a coating material.

Parameter table of Tungsten Silicide (WSi2) Powder

Tungsten Silicide Properties
Other Names	tungsten disilicide, WSi2 powder
CAS No.	12039-88-2
Compound Formula	WSi2
Molecular Weight	240.01
Appearance	Gray Black Powder
Melting Point	2160℃
Boiling Point	N/A
Density	9.3 g/cm3
Solubility in H2O	N/A
Exact Mass	239.904786
Tungsten Silicide Health & Safety Information
Signal Word	N/A
Hazard Statements	N/A
Hazard Codes	N/A
Risk Codes	N/A
Safety Statements	N/A
Transport Information	N/A

Application of Tungsten Silicide (WSi2) Powder

Microelectronics: WSi2 powder is widely used in the microelectronics industry for fabricating high-performance integrated circuits and semiconductor devices.

 Microelectronics

Thermal Barrier Coatings: Its excellent thermal conductivity and stability make it an ideal material for thermal barrier coatings in aerospace and automotive applications.

 Thermal Barrier Coatings

Cutting Tools and Wear Parts: Due to its high hardness and resistance to wear, WSi2 powder is used in the manufacture of cutting tools and wear parts in machining and manufacturing processes.

 Cutting Tools and Wear Parts

Ceramic Composites: It is also used as a reinforcement material in ceramic composites, enhancing their mechanical properties and thermal stability.

 Ceramic Composites

Sensors and Thermal Detectors: WSi2 powder’s sensitivity to temperature level changes makes it suitable for usage in sensors and thermal detectors for monitoring and regulating temperature level in different applications.

 Sensors and Thermal Detectors

Production Method of Tungsten Silicide (WSi2) Powder

1. Direct Synthesis
Mix tungsten (W) and silicon (Si) powders in a 1:2 ratio. Heat the mixture at 1000–1500°C under an inert gas (like argon). The elements react to form WSi₂:
W + 2Si → WSi₂. Grind the product into powder.

2. Mechanical Alloying
Put tungsten and silicon powders in a ball mill. High-energy collisions between balls and powders cause the elements to mix and react over hours. The process forms WSi₂ nanoparticles.

3. Chemical Vapor Deposition (CVD)
Heat tungsten hexachloride (WCl₆) and silane (SiH₄) gases to 800–1200°C. They react on a substrate to deposit WSi₂ film. Scrape off the film and grind it into powder.

4. Sol-Gel Method
Dissolve tungsten and silicon alkoxides in alcohol. Add water to start hydrolysis. The solution forms a gel. Dry and heat the gel at 600–1000°C to remove organic parts and get WSi₂ powder.

5. Thermal Decomposition
Heat tungsten silicide compounds like W(SiH₃)₄ at high temperatures. The compound breaks down into WSi₂ and hydrogen gas. Collect the solid powder.

 

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality Tungsten Silicide (WSi2) Powder, please feel free to contact us or click on the needed products to send an inquiry.

Storage Condition of Tungsten Silicide (WSi2) Powder

Sealed Containers

Store WSi₂ powder in airtight bags or jars. This stops air and moisture from getting in, which could cause oxidation or clumping.

Dry Environment

Keep it in a dry place with low humidity (below 40%). Use silica gel desiccants inside containers to absorb extra moisture.

Avoid High Temperatures

Store at room temperature (15–25°C). High heat (over 800°C) may change the powder’s structure or reactivity.

Separate from Reactive Materials

Do not mix with strong acids, bases, or oxidizing agents. These can cause chemical reactions that damage the powder.

Handle with Care

Use gloves and clean tools. Avoid shaking or dropping containers to prevent particle agglomeration.

Label Clearly

Mark containers with the name, purity, and storage date. This helps track shelf life and usage.

Payment Term

L/C, T/T, Western Union, Paypal, Credit Card etc.

 

Shipment Term

By sea, by air, by express, as customers request.

5 FAQs of Tungsten Silicide (WSi2) Powder

Q1:

What are the key benefits of Tungsten Silicide (WSi2) Powder?

Re: The key benefits of Tungsten Silicide (WSi2) Powder include its high melting point, excellent thermal conductivity, chemical stability, high hardness, and good electrical conductivity. These properties make it suitable for a wide range of applications, including microelectronics, thermal barrier coatings, cutting tools, ceramic composites, and sensors.

Q2:

How is Tungsten Silicide (WSi2) Powder produced?

Re: Tungsten Silicide (WSi2) Powder is typically produced through a high-temperature reaction between tungsten and silicon. This reaction can be achieved in a controlled environment, such as a furnace, at elevated temperatures, resulting in the formation of the WSi2 compound.

Q3:

What are the potential applications of Tungsten Silicide (WSi2) Powder in the aerospace industry?

Re:In the aerospace market, Tungsten Silicide (WSi2) Powder has prospective applications as a thermal barrier finishing product. Its high thermal conductivity and chemical security make it ideal for securing airplane engines and other vital components from severe temperature levels and corrosive atmospheres.

Q4:

How does Tungsten Silicide (WSi2) Powder contribute to improving the performance of semiconductors?

Re: Tungsten Silicide (WSi2) Powder contributes to improving the performance of semiconductors by supplying a low-resistance contact between the semiconductor product and steel interconnects. Its great electrical conductivity and stability make it an efficient product for ohmic contacts in incorporated circuits, boosting the total efficiency and integrity of semiconductors.

Q5:

Are there any environmental considerations associated with the use of Tungsten Silicide (WSi2) Powder?

Re: Using Tungsten Silicide (WSi2) Powder does not posture considerable ecological concerns. However, its manufacturing and disposal should be handled sensibly to minimize any type of potential influences. Proper garbage disposal and reusing methods can aid minimize any type of environmental effects related to making use of this product.