Industrial customized high quality silicon nitride ceramic nails

Overview of Silicon Nitride Ceramic Nails

Silicon Nitride Ceramic Nails is a new type of ceramic product made of silicon nitride as the main raw material. It has high strength, high hardness, high-temperature resistance, wear resistance, corrosion resistance and other excellent properties. At the same time, silicon nitride ceramic nail also has good insulation and chemical stability. Therefore, Silicon Nitride Ceramic Nails are widely used in machinery manufacturing, electronics, aerospace and other fields; they can be used to fix and connect various components, maintain stable performance in harsh environments, and improve the reliability and service life of equipment.

Features of Silicon Nitride Ceramic Nails

Silicon Nitride Ceramic Nails have the following significant features

High strength and hardness: Silicon Nitride Ceramic is extremely strong and hard, with its hardness second only to diamond and a few other substances. This makes it able to withstand large external forces during use, not easy to deform or damage and can be used in connection parts that require high precision and high stability.

Good high-temperature resistance: Silicon nitride ceramics can maintain good performance in high-temperature environments and can withstand high temperatures of 1200 ℃ or even higher without softening or deformation. In some high-temperature industrial fields, such as metallurgy, glass manufacturing, etc., silicon nitride ceramic nails can work stably to ensure the normal operation of equipment.

Excellent wear resistance: silicon nitride ceramic nails have excellent wear resistance, a smooth surface and a small friction coefficient. In frequent contact and friction occasions, such as the connection of mechanical transmission components, silicon nitride ceramic nails can effectively reduce wear and prolong the service life of themselves and related components, reducing maintenance costs.

Good corrosion resistance: silicon nitride ceramic nails have strong resistance to acids, alkalis and other chemicals and are not easily corroded. In some chemical industrial environments, silicon nitride ceramic nails can maintain stable performance and will not affect the reliability of the connection due to chemical corrosion.

Good insulation performance: Silicon nitride ceramic nails have good electrical insulation properties, can be used in electronic equipment and other high insulation requirements of the occasion, and can effectively avoid short circuits and other problems to ensure the safe operation of the equipment.

Specifications table of Silicon Nitride Ceramic Nails

Property	Typical Value
Material	Silicon nitride (Si₃N₄)
Color	Black – gray3
Density	≥3.2 g/cm³34
Hardness (HV 1)	14 – 16 GPa34
Bending Strength	>800 MPa34
Compressive Strength	>4000 MPa4
Fracture Toughness	6 – 8 MPa·m¹/²4
Young’s Modulus	300 – 320 GPa34
Poisson’s Ratio	0.283
Thermal Conductivity	15 – 28 W/m·K3
Coefficient of Thermal Expansion	2.2 – 3.5×10⁻⁶/℃34
Maximum Service Temperature	1100 – 1200℃ in air3
Electrical Resistivity	10⁷ – 10¹² Ω·cm3
Dielectric Constant	6

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Applications of Silicon Nitride Ceramic Nails

Silicon Nitride Ceramic Nails have a wide range of applications in many fields due to their unique properties:

Mechanical engineering: Silicon Nitride Ceramic Nails are used for the connection of components in high-precision machine tools. Because of its high strength, high hardness and good wear resistance, it can ensure that the machine tool in the high-speed, high-precision machining process, the parts of the connection are stable to ensure the machining accuracy. At the same time, in the automobile engine, it can be used to connect some high-temperature-resistant, wear-resistant parts, such as pistons and connecting rods, etc., to improve the reliability and service life of the engine.

Electronic industry: due to the good insulating properties and high-temperature resistance of silicon nitride ceramic nails, silicon nitride ceramic nails can be used in electronic equipment such as circuit board fixed and chip encapsulation. It can effectively prevent circuit short-circuits and, at the same time, maintain stable performance in high-temperature environments to ensure the normal operation of electronic equipment.

Aerospace: Silicon nitride ceramic nails are often used to connect the high-temperature parts of aviation engines. It can maintain the stability of the connection under the extreme environment of high temperature and high pressure, reduce the weight of the engine and improve the performance of the aero-engine. In addition, in the structural connection of spacecraft, silicon nitride ceramic nails can withstand all kinds of stresses in the space environment due to their excellent performance to ensure the structural strength of spacecraft.

Chemical industry: In chemical production, some reactors, pipelines and other equipment will be used in the connection of silicon nitride ceramic nails. Its good corrosion resistance can resist the erosion of a variety of chemical substances to ensure the sealing and safety of the equipment and reduce the leakage caused by corrosion and other issues.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

Payment Term

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

Shipment Term

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

5 FAQs of Silicon Nitride Ceramic Nails

Q1:What is the production process of silicon nitride ceramic nails?

It mainly includes powder synthesis, molding and sintering:

Powder synthesis: adopt silicon powder direct nitriding method (purity > 99.9%) or carbon thermal reduction method to generate α-Si₃N₄ and β-Si₃N₄ mixed powder.

Molding: by dry pressing, injection or isostatic pressure molding to make billet.

Sintering:

Reaction sintering: low cost but only 2-2.7 g/cm³ density, suitable for common mechanical joints.

Hot press sintering: Density > 99%, strength > 850 MPa, used in aerospace and other high-end fields.

Pneumatic pressure sintering method: sintered in nitrogen at 1-10 MPa, a long columnar grain structure can be prepared to enhance fracture toughness.

Q2: Why is the price of silicon nitride ceramic nails higher than metal nails?

Raw material cost: the price of high-purity silicon powder (purity >99.9%) is about 200 RMB/kg, which is 10 times of stainless steel raw material.

Processing difficulty: diamond tools or laser cutting, processing efficiency is only 1/5 of the metal, high cost of tool loss.

Process complexity: hot press sintering requires high temperature and high-pressure equipment, and energy consumption is 3-5 times of ordinary metal processing.

However, its life is 5-10 times that of stainless steel nails, and long-term use can reduce maintenance costs.

Q3: How to choose the right silicon nitride ceramic nail?

According to the temperature, Reaction sintering is selected below 1200℃, and air pressure sintering is selected above 1200℃.

According to load: high alternating load requires hot press sintered products with β-phase content >80%.

According to the environment, exposure to hydrofluoric acid or strong alkali needs to be coated with silicon carbide.

According to cost, Domestic reaction sintered nails (about 20 RMB/pc) are available for low-end applications, while imported pneumatic sintered nails (about 1200 RMB/kg) are required for high-end applications.

Q4: What do I need to pay attention to when installing silicon nitride ceramic nails?

Surface treatment: Molybdenum disulfide grease is recommended to be coated on the threaded part to prevent seizing.

Temperature control: In the high-temperature environment, it is necessary to reserve an expansion gap; for example, at 1000℃, it is necessary to reserve 0.3 mm of expansion per meter length.

Q5: How to test the quality of silicon nitride ceramic nails?

Non-destructive testing: Detect internal cracks by ultrasonic flaw detection and analyze the crystal phase composition by X-ray diffraction.

Performance testing: Strength is tested by a three-point bending test, and wear resistance is evaluated by friction and abrasion tester.

Life prediction: Based on Weibull statistical analysis, reliability modeling is used to predict fatigue life.