Overview of High Thermal Insulation Aluminum Nitride Ceramic Sheet Material

Aluminum Nitride (AlN) ceramic is an advanced technical ceramic material known for its unique combination of extremely high thermal conductivity and excellent electrical insulation properties. Unlike traditional alumina or beryllium oxide ceramics, AlN offers a thermal conductivity close to that of metals like aluminum and copper, while still acting as a robust electrical insulator. It is typically produced via powder processing and sintering, resulting in a dense, hard, and durable material ideal for demanding thermal management applications.

Features of High Thermal Insulation Aluminum Nitride Ceramic Sheet Material

High Thermal Conductivity: Possesses a theoretical thermal conductivity of up to 320 W/m·K, with commercial grades typically ranging from 170 to 230 W/m·K, effectively dissipating heat in high-power circuits.

Excellent Electrical Insulation: Despite its metal-like heat transfer, it maintains a high volume resistivity and dielectric strength, preventing short circuits and ensuring device safety.

Low Thermal Expansion Coefficient (CTE): Its CTE closely matches that of silicon (Si) and Silicon Carbide (SiC), minimizing thermal stress and improving reliability in semiconductor packaging.

High Mechanical Strength & Corrosion Resistance: It offers good flexural strength and is resistant to attack from many molten metals and chemicals.

Non-Toxic: AlN is a safe alternative to Beryllium Oxide (BeO) ceramics, which pose serious health risks during processing and disposal.

Specification of High Thermal Insulation Aluminum Nitride Ceramic Sheet Material

High Thermal Insulation Aluminum Nitride Porcelain Sheet– Technical Requirements

Material Composition

Aluminum nitride (AlN) is the major part of this ceramic sheet. It contains over 95% pure AlN. Percentages of sintering aids like yttrium oxide are included in boost density and thermal efficiency. No glass phases or metal fillers are used.

Thermal Characteristics

This product reveals excellent thermal insulation combined with high thermal conductivity– commonly in between 170 and 220 W/m · K. It manages constant operating temperatures up to 1,300 ° C in inert atmospheres. The coefficient of thermal growth has to do with 4.5 × 10 ⁻⁶/ ° C (from 25 ° C to 400 ° C), which carefully matches silicon and some metals. This minimizes stress and anxiety throughout thermal cycling.

Electrical Characteristics

The sheet acts as a solid electrical insulator. Its quantity resistivity exceeds 10 ¹⁴ Ω · cm at area temperature level. Dielectric strength is more than 15 kV/mm. The dielectric constant stays steady at around 8.8 (at 1 MHz), making it suitable for high-frequency applications.

Mechanical & Physical Functions

Density ranges from 3.25 to 3.30 g/cm TWO. Flexural strength is commonly 300– 350 MPa. The material is hard (Vickers hardness ~ 12 Grade point average) yet can be precision-machined before final sintering. Standard sheet densities consist of 0.25 mm, 0.5 mm, 1.0 mm, and 2.0 mm, with custom-made dimensions readily available.

Secret Advantages

High thermal conductivity allows effective warmth dissipation. At the exact same time, its electrical insulation ensures security and dependability. Unlike alumina, light weight aluminum nitride provides better warmth transfer without giving up dielectric efficiency. It stands up to thermal shock well and preserves structural integrity under quick temperature changes.

Common Applications

Utilized in power electronics, LED substratums, laser diode installs, RF plans, and semiconductor production equipment. Additionally appropriate for sensors and parts that operate in extreme thermal environments.

Applications of High Thermal Insulation Aluminum Nitride Ceramic Sheet Material

Applications of High Thermal Insulation Light Weight Aluminum Nitride Porcelain Sheet Material

Power Electronics and Semiconductor Gadgets

Aluminum nitride (AlN) ceramic sheets are extensively made use of in power electronic devices. These sheets manage high heat while keeping electrical insulation solid. They function well in shielded entrance bipolar transistors (IGBTs), MOSFETs, and other semiconductor modules. The material relocates heat away fast yet obstructs electric existing. This helps gadgets run cooler and last longer.

LED Lights Systems

In high-power LED lights, handling heat is vital. AlN ceramic sheets function as substrates that draw heat from LED chips. Their high thermal conductivity stops overheating. At the same time, their electric insulation keeps circuits safe. This equilibrium makes them optimal for streetlights, vehicle headlights, and commercial illumination.

Aerospace and Defense Devices

Aerospace systems require products that execute under severe problems. Light weight aluminum nitride sheets offer steady efficiency in broad temperature level ranges. They sustain radar systems, satellite parts, and avionics. Their lightweight and solid insulation reduce system failing risks in harsh environments.

Electric Autos and Battery Systems

Electric cars count on effective thermal administration. AlN ceramic sheets are made use of in battery packs and electric motor controllers. They aid spread heat uniformly across cells. This protects against hot spots and enhances safety and security. Their electrical seclusion also protects delicate control devices from short circuits.

Industrial Home Heating and Sensing Units

In industrial setups, sensing units and burner encounter consistent thermal stress and anxiety. High thermal insulation AlN sheets safeguard these parts without slowing down warm transfer. They are found in heater linings, temperature level sensing units, and process control systems. Their longevity guarantees constant procedure over extended periods.

Company Introduction

Welcome to Eduloc, a leading global supplier of high-quality ceramic grinding balls. Our product range includes,Mullite Ceramic, Quartz Ceramic, Aluminum Nitride Ceramic, Silicon Nitride Ceramic, Silicon Carbide Ceramic designed for industries such as mining, chemicals, coatings, electronics, and pharmaceuticals. We are committed to providing durable and efficient grinding solutions tailored to our customers’ diverse needs. With advanced manufacturing technology and stringent quality control, our ceramic grinding balls excel in wear resistance, corrosion resistance, and thermal stability. Partner with us for reliable products and exceptional service that enhance your production efficiency and reliability.

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Shipment Methods

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

5 FAQs of High Thermal Insulation Aluminum Nitride Ceramic Sheet Material

What is aluminum nitride ceramic sheet?

Aluminum nitride (AlN) ceramic sheet is a high-performance material made from aluminum and nitrogen. It looks like a thin, flat plate but works well under extreme heat. This material keeps heat from moving through it easily, which makes it great for electronics and other high-temperature uses.

Why choose AlN over other ceramics?

Most ceramics do not move heat well. AlN stands out because it both insulates and spreads heat efficiently. It has much higher thermal conductivity than standard alumina ceramics. At the same time, it blocks electricity, so it stays safe in electronic parts.

How does thermal insulation work in AlN sheets?

Even though AlN moves heat sideways very fast, it slows down heat flow across its thickness. This means one side can stay cool while the other gets hot. That property helps protect sensitive components from overheating in compact devices.

Where are AlN ceramic sheets commonly used?

You will find them in power electronics, LED lighting, laser systems, and electric vehicles. Any place needing strong heat control with electrical safety often uses AlN sheets. They also work in aerospace and industrial heating equipment.

Are AlN sheets durable and stable?

Yes. They keep their shape and performance even at temperatures above 1,000°C. They resist corrosion, do not expand much when heated, and last a long time without cracking or degrading. This reliability makes them ideal for demanding applications.