Ultra-High Thermal Conductivity Silicon Nitride Ceramics For Power Electronics And New Energy Vehicles

Ultra-High Thermal Conductivity Silicon Nitride Ceramics for Power Electronics and New Energy Vehicles

Silicon nitride (Si₃N₄) ceramic substrates are manufactured using 99.5% high-purity raw materials through tape casting and gas pressure sintering processes. The products exhibit excellent thermal conductivity, high strength and reliability, making them an ideal thermal management solution for next-generation high-power electronic devices.

Primary Applications

• Power electronics: IGBT, SiC power modules

• New energy vehicles: Motor controllers, OBC

• Rail transportation: Traction converters

• PV inverters: High-power photovoltaic modules

• 5G communications: Base station RF devices

Key Advantages

✓ Ultra-high thermal conductivity: ≥90W/(m·K)
✓ High strength & toughness: Flexural strength ≥600MPa
✓ Low thermal expansion: CTE 3.2×10⁻⁶/°C
✓ Excellent insulation: Volume resistivity >10¹⁴Ω·cm
✓ Superior reliability: Passes 1000 cycles of -40~150°C thermal shock test

Technical Specifications

Manufacturing Process

1. Material preparation: Nano-grade Si₃N₊ powder modification

2. Tape casting: Producing 0.1-1.2mm green tapes

3. Isostatic pressing: 200MPa densification

4. Gas pressure sintering: 1850°C/10MPa N₂ atmosphere

5. Precision machining: Laser cutting, drilling

6. Surface treatment: Double-side polishing to Ra≤0.2μm

Usage Guidelines

⚠️ Storage: Vacuum packed, moisture and dust proof
⚠️ Soldering: Recommended active metal brazing
⚠️ Mounting stress: Control <50MPa assembly stress
⚠️ Thermal design: Recommended with thermal grease

After-Sales Service

• Warranty: 36-month quality guarantee

• Technical support: Free thermal design consultation

• Testing service: Third-party test reports available

• Customization: Special sizes and structures

FAQ

Q: Advantages vs AlN substrates?
A: Main advantages:
① 3-5x higher strength
② Better thermal shock resistance
③ Higher reliability

Q: Maximum processable size?
A: Standard 200×200mm, special process up to 300×300mm.

Q: Recommended metallization?
A: Options include:
• DBC direct bonding copper
• AMB active metal brazing
• Thick film printing

We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics.

Deyu Precision Ceramics Technology Co., Ltd. has many years of experience in producing special precision ceramics, and has the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. At present, the company has production and processing equipment such as dry press, isostatic press, experimental furnace, flat kiln, machining center, surface grinder, universal internal and external grinder, centerless grinder and laser cutting machine, as well as complete high-precision testing equipment such as high-precision projector, three-dimensional tester, metallographic microscope, hardness tester and densitometer.

With advanced production technology and complete production facilities, the company is one of the few domestic enterprises that can produce special precision ceramic structural parts and functional parts with machining accuracy less than 2 microns, and has strong core competitiveness in the same industry in China.

Advantages of the company: 1. National new technology enterprises; 2. The company has a municipal R&D center; 3. Cooperation with domestic key universities and research institutes; 4. Design, molding, sintering and precision processing; 5. The products cover alumina, zirconia, silicon nitride, silicon carbide and other precision ceramics; 6. Precision plus technology.

The company has always been standing in the position of customers to solve problems, focusing on the principle of quality and delivery time, adhering to the business philosophy of "integrity, innovation and reassurance", and sincerely looking forward to cooperating with you.