Zhen an Metallurgy
Silicon Nitride Powder
Zhen An provides you with various types of silicon nitride powder: high purity silicon nitride powder, high purity ultrafine silicon nitride powder, ultrafine silicon nitride powder, etc.
The content of some elements can be customized
Stable Quality Uniform Shape
Packaging: 1 Ton Jumbo Bag
100-200mm Customizable
Free Sample
Issuance Product Test Reports
Introduction to Silicon Nitride Powder
Silicon nitride is a compound of silicon(59.4%) and nitrogen(38.2%). Si3N4 is the most thermodynamically stable of the silicon nitrides. It is a white, high melting solid that is relatively chemically inert. It has a melting point of approximately 2830°C and a density of 3.16 g/cm3. Silicon nitride’s high temperature properties are superior to most metals, combining high strength, creep resistance, and oxidation resistance.
The material is currently used in market segments such as reciprocating engine components and turbochargers, bearings, metal cutting and forming tools, and hot metal processing. Silicon nitride powder has excellent strength and creep resistance at high temperatures and is very resistant to thermal shock, making it an important high temperature structural ceramic. Silicon nitride is also of interest as an electronic thin film material in optical coatings, insulating layers, or diffusion barriers.
Type of Slicon Nitride Powder
Silicon Nitride Powder Specifications
| Product | Phase Ratio | Purity (%) | Particle D50 (μm) | Element content (%) | Impurity (ppm) | |||||
| N | O | C | Si free | Fe | Al | Ca | ||||
| SiN | β＞50% | 99.999 | ＜2.5 | ＞38.5 | ＜0.8 | ＜0.15 | ＜0.3 | ＜5 | ＜3 | ＜3 |
| SiN | β＞50% | 99.999 | ＜0.8 | ＞38.0 | ＜2.0 | ＜0.2 | ＜1.2 | ＜30 | ＜20 | ＜20 |
| SiN | α＞70% | 99.95 | ＜0.8 | ＞38.5 | ＜1.0 | ＜0.2 | ＜0.5 | ＜50 | ＜200 | ＜50 |
| SiN | α＞92% | 99.50 | ＜2.5 | ＞38.5 | ＜2.5 | ＜0.2 | ＜0.5 | ＜2000 | ＜2000 | ＜500 |
| SiN | α＞95% | 99.00 | ＜5.0 | ＞38.0 | ＜2.0 | ＜0.2 | ＜0.5 | ＜4000 | ＜4000 | ＜1000 |
| SiN | Amorphous | 97.00 | ＜50nm | ＞38.0 | ＜0.2 | ＜0.05 | N/A | ＜600 | ＜5 | ＜5 |
25 kg steel drums with polyethylene inlet.
(60 Liter) 8 drums on one pallet CP1
(1000×1200 mm)=1 Packaging-unit of 200 kg
Other packaging / quantity on request.
Zhen An silicon nitride powders are available in homogeneous lots up to 5 tons.
Storage and Handling: Storage and handling are subject to the rules and regulations in the country ofuse.Store in a closed container.
Remark：Other chemical composition and size can be supplied upon request.
Supply Ability: 300000 Metric Tons per month
Microstructure of Silicon Nitride
Silicon nitride is a solid compound that can be formed by a direct reaction between silicon and nitrogen. It occurs in three different phases characterized by their crystal structure, namely:
- The most common alpha and beta phases display a hexagonal crystal structure. Both phases are synthesized at normal pressure; the α phase is formed at low temperature and transforms to the β phase between 1,400 °C and 1,600 °C.
- The γ phase is only formed at high temperature and high pressure.
Properties of Silicon Nitride Powder
The particle size of silicon nitride powder is usually at the micrometer or nanometer level, and the size of the particle size affects its physical properties and application areas.
Since the particle size is small, silicon nitride powder has a large specific surface area, which makes it advantageous in adsorption, catalysis, etc.
Generally speaking, the chemical composition of silicon nitride powder is very pure, with high purity and low impurity content, which makes it important in high-end applications.
Silicon nitride powder has a high hardness, similar to silicon nitride monolithic material, which makes it excellent in wear resistance and scratch resistance.
Silicon nitride powder has high thermal stability and can maintain stability in high temperature environments, which makes it widely used in high temperature applications.
Since silicon nitride has a high thermal conductivity, silicon nitride powder also generally has good thermal conductivity and is suitable for the preparation of thermal conductive materials and heat sinks.
Silicon nitride powder also has certain applications in optics. It has excellent refractive index, transparency and anti-reflection properties and can be used in optical coatings and other fields.
Silicon nitride powder usually has excellent insulation properties and is suitable for the preparation of insulating components in electronic devices.
What are the applications of silicon nitride?
Electronics Industry:
The unique electrical properties of silicon nitride have led to its increasing use in microelectronic applications as an insulator and chemical barrier in the manufacture of integrated circuits for device protection packaging.
Silicon nitride is used as a passivation layer with a high diffusion barrier to water and sodium ions, both of which are major sources of corrosion and instability in microelectronics. The material is also used as an electrical insulator between polysilicon layers in analog chip capacitors.
Optical Field:
The use of silicon nitride has also been recognized in the optical field, with great transparency in the spectral range, giving rise to Si3N4 photonics.
The broadband properties of Si3N4 enable its use in biochemical and biomedical optical applications, biophotonics, remote and data communications, and optical signal processing, sensing from visible to near-infrared wavelengths.
Bearing Industry:
Silicon nitride is considered to be an extremely promising material for the manufacture of high-performance all-ceramic or steel-ceramic hybrid rolling contact bearings due to its excellent impact resistance compared to other ceramics.
Silicon nitride offers significant benefits by extending contact fatigue life due to its extremely high strength, toughness, and tolerance to chemical and thermal factors.
Aerospace:
In the aerospace industry, traditional materials such as metals and composites are often used in aircraft production. The need for new materials that can withstand extreme conditions has led to the use of silicon nitride in various aerospace applications.
Its mechanical robustness and high temperature performance make it a material of choice to replace traditional materials used in ball bearings, radomes and RF windows.
FAQs About Silicon Nitride
Silicon Nitride as a material that can withstand high temperatures and wear, it has a long service life, reducing the need for frequent replacements and contributing to a circular economy. Additionally, Silicon Nitride can be recycled and reused, reducing waste and environmental impact.
Factors that affect the color of silicon nitride powder may include:
Purity: The purity of silicon nitride powder will directly affect its color. High-purity silicon nitride powder usually presents a more uniform color.
Particle size: The particle size of silicon nitride powder will also affect its color performance. Silicon nitride powders of different particle sizes may present different colors.
Crystal structure: The crystal structure of silicon nitride powder will affect its color, and different crystal structures may present different colors.
Surface treatment: The surface treatment method of silicon nitride powder may also change its color. For example, coating, oxidation and other treatments will affect its color performance.
Preparation process: The preparation process of silicon nitride powder has an impact on its color, and different preparation processes may lead to color differences.
Additives: Other substances or compounds added during the production process may also affect the color of silicon nitride powder.
Lighting conditions: Lighting conditions may also affect the color performance of silicon nitride powder. Different light sources and lighting angles may cause it to present different colors.
Silicon nitride stands out among other ceramic materials due to its unique combination of properties: High strength and toughness: Unlike many ceramics, which are typically brittle, silicon nitride has excellent fracture toughness, making it more resistant to cracking under pressure.
Silicon nitride is generally an insulating material and is not inherently conductive.
In its pure form, silicon nitride is an electrical insulator, meaning it does not conduct electricity very well. This property makes it useful in a variety of applications where electrical insulation is required, such as insulating layers in the semiconductor industry or in high-temperature environments.
However, silicon nitride can be doped or modified to exhibit conductive or conducting properties under specific conditions. By introducing certain impurities or changing its composition, silicon nitride can be engineered to be a semiconductor or even a conductor.
Why choose Zhen An Metallurgy as your long-term partner?
30 years of production and sales experience:
Zhenan Metallurgy is located in Anyang City, Henan Province, China. It has 30 years of production experience and can produce high-quality fe si according to user requirements.
Customized according to customer needs:
Zhenan Metallurgy has its own metallurgical experts, and the chemical composition, particle size and packaging of ferrosilicon can be customized according to customer requirements.
Worry-free delivery:
The annual output of Zhen’an metallurgical fe Si is 1.5 million tons, and the spot inventory is 200,000 tons. The supply is stable and the delivery is timely.
Free samples:
Zhenan Metallurgical will give you the greatest support, and provide free ferrosilicio samples.
Support third-party testing:
Zhenan Metallurgical has a strict quality control system. ferro silicio has been inspected more than 3 times before leaving the factory. At the same time, we accept third-party inspections such as SGS and BV to provide you with the greatest guarantee.
Manufacturer’s strength display:
Our factory covers an area of 30,000 square meters, with a full set of modern production equipment, two large-scale production bases such as hydrometallurgy, two key laboratories and a metallurgical material testing center with 16 senior researchers.
30000(m2)
Our factory covering an area of 30,000 square meters
1500000
Annual production and sales more than 1,500,000 tons.
Professional team to provide you with better service
Zhenan Metallurgy has a high-quality talent team integrating sales, production and R&D, including 16 senior researchers, 28 professional engineers, 35 international sales personnel, 10 senior operation personnel, and more than 300 production technicians.
Zhen An metallurgical certificate display
Zhen An metallurgical certificate display
Our products have been exported to 78 countries, and many regular customers have visited our company and factory and placed multiple orders. For one cooperation, customers will return orders many times, and some customers will introduce new customers to us.
