Silicon Nitride

Overview of Silicon Nitride Ceramic Products

Silicon nitride (Si₃N₄) ceramics represent a class of advanced engineering materials that combine exceptional mechanical strength with thermal and chemical stability. These ceramics are engineered through precise manufacturing processes to deliver superior performance in high-temperature and corrosive environments. Utilizing high-purity silicon nitride as the base material, these products offer unparalleled toughness, wear resistance, and thermal shock resistance, making them ideal for a wide range of industrial applications. Whether used in aerospace components or cutting tools, silicon nitride ceramics set new standards for durability and reliability.

Features of Silicon Nitride Ceramic Products

1. High Strength and Toughness: Silicon nitride exhibits excellent fracture toughness and bending strength, making it highly resistant to damage from impacts and wear.
2. Superior Thermal Properties: With low thermal expansion and high thermal conductivity, silicon nitride can withstand rapid temperature changes without cracking or degrading.
3. Excellent Wear Resistance: The hardness and durability of silicon nitride make it an ideal choice for components exposed to significant wear and abrasion.
4. Chemical Inertness: Highly resistant to corrosion from acids, alkalis, and organic solvents, ensuring long-lasting performance in harsh environments.
5. Low Density: Despite its strength, silicon nitride is relatively lightweight, which is beneficial for applications requiring reduced weight.
6. Self-Lubricating: Silicon nitride has a low coefficient of friction, reducing the need for additional lubricants in moving parts.
7. Electrical Insulation: High dielectric strength makes silicon nitride ceramics suitable for use in electrical insulation applications.

Specifications of silicon Nitride Ceramic Products

Property	Specification
Material Composition	High-purity silicon nitride (Si₃N₄), often stabilized with Y₂O₃ or Al₂O₃
Density	3.18 - 3.22 g/cm³
Hardness (Vickers)	~1500 - 1800 HV
Fracture Toughness	6 - 9 MPa·m^(1/2)
Compressive Strength	> 3000 MPa
Tensile Strength	> 700 MPa
Flexural Strength	> 900 MPa
Elastic Modulus	280 - 320 GPa
Thermal Conductivity	30 - 90 W/m·K (depending on composition and structure)
Coefficient of Thermal Expansion (CTE)	3.2 - 4.0 × 10⁻⁶/°C
Maximum Service Temperature	Continuous up to 1400°C, short-term peaks up to 1800°C
Thermal Shock Resistance	ΔT > 600°C (depending on thickness and shape)
Dielectric Strength	> 15 kV/mm
Volume Resistivity	> 10¹⁵ Ω·cm at 25°C
Surface Resistivity	> 10¹⁴ Ω/sq at 25°C
Dielectric Constant (εr)	~9.5 at 1 MHz
Loss Tangent (tan δ)	< 0.0002 at 1 MHz
Chemical Resistance	Excellent resistance to acids, alkalis, and organic solvents
Porosity	< 0.5%
Water Absorption	< 0.1%
Color Options	Natural white, customizable colors through pigmentation
Finish Options	Polished, honed, matte, textured
Environmental Impact	Recyclable, low environmental footprint

Applications of Silicon Nitride Ceramic Products

• Aerospace and Automotive Industries: Used in engine components, bearings, and seals where high temperatures and corrosive environments are common.
• Mechanical Engineering: Employed in cutting tools, dies, and wear-resistant parts due to its superior hardness and wear resistance.
• Chemical Processing: Ideal for pump components, valves, and other parts exposed to aggressive chemicals.
• Electronics: Suitable for substrates and insulators owing to their excellent electrical properties.
• Medical Devices: Used in surgical instruments and implants where biocompatibility and durability are critical.
• Energy Sector: Found in turbine blades and heat exchangers, benefiting from the material's thermal stability and resistance to thermal shock.

Company Introduction

Advanced Ceramics is committed to being the world's leading provider of ceramic material solutions. Since our inception in 2012, we have focused on the development, production and sales of high-performance ceramic products, providing our customers with innovative products and quality services. With a deep understanding of material science and advanced manufacturing technology, we have won wide recognition in a variety of fields, including electronics, machinery, construction, and medical care.

Our core competitiveness lies in continuous technological innovation and strict quality control. We have an R&D team of senior scientists and engineers who are constantly exploring the application potential of new materials to ensure that our products are always at the forefront of the industry. At the same time, we have established a perfect quality management system, from the selection of raw materials to the finished product factory, each link is strictly tested to ensure the high quality and consistency of our products.

Advanced Ceramics' product line covers a wide range of ceramic applications, including but not limited to: high-precision electronic ceramic components, wear-resistant mechanical parts, decorative building materials, and medical implants. We not only provide standard products, but also customize ceramic products with special specifications and functions according to customers' needs. In addition, we actively promote the concept of green environmental protection, all production processes comply with international environmental standards, and strive to minimize the impact on the environment.

For more information, please feel free to contact us.(nanotrun@yahoo.com)

Payment Methods

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

Shipment Methods

By sea, by air, by express as soon as possible once payment receipt.

5 FAQs of Silicon Nitride Ceramic Products

1. Q: What makes silicon nitride ceramics so tough? A: Silicon nitride's toughness comes from its unique microstructure, which includes fine-grained crystallites and a high density of grain boundary phases that inhibit crack propagation.
2. Q: Can silicon nitride ceramics be machined after sintering? A: While silicon nitride is very hard, it can be machined using diamond tools. However, machining should be done by professionals familiar with ceramic machining techniques to avoid damage.
3. Q: How does silicon nitride compare to traditional ceramics in terms of thermal shock resistance? A: Silicon nitride has superior thermal shock resistance compared to many traditional ceramics, thanks to its lower coefficient of thermal expansion and enhanced microstructure.
4. Q: Are silicon nitride ceramics suitable for high-temperature applications? A: Yes, silicon nitride can withstand continuous service temperatures up to 1400°C and short-term peaks up to 1800°C, making it ideal for high-temperature environments.
5. Q: What maintenance do silicon nitride ceramic surfaces require? A: Silicon nitride ceramics are easy to maintain; regular cleaning with mild soap and water is usually sufficient. For tougher stains, non-abrasive cleaners can be used without damaging the surface.