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China Wuxi Special Ceramic Electrical Co.,Ltd Company News

Solving Heat Dissipation Challenges — High Thermal Conductivity Silicon Nitride Substrates for IGBT Modules

In modern electric vehicles, railway traction, and industrial drives, IGBT power modules often suffer from overheating, delamination, and fatigue failure due to high thermal loads. Traditional alumina or aluminum nitride substrates cannot balance thermal conductivity and mechanical toughness, leading to reduced service life. The High Thermal Conductivity Silicon Nitride Ceramic Substrate provides an optimal solution with a thermal conductivity of 90–100 W/m·K, flexural strength above 600 MPa, and a thermal expansion coefficient of 2.8–3.2×10⁻⁶/K, perfectly matching silicon chips to minimize thermal stress. It also features excellent electrical insulation (>20 kV/mm) and low dielectric loss (

2025

11/12

Meeting High-Pressure and High-Temperature Challenges — Silicon Nitride Ceramic Plungers Deliver Long-Term Sealing and Wear Resistance

Manufacturers of hydraulic pumps and high-pressure systems often struggle with rapid wear and sealing failure of metal plungers. Exposure to corrosive or high-temperature fluids leads to scoring, pitting, and eventual leakage. The silicon nitride ceramic plunger provides a proven solution. With bending strength above 1000 MPa and a friction coefficient below 0.3, it operates smoothly even under dry or poor-lubrication conditions. Its self-lubricating surface minimizes friction and heat buildup, ensuring stable sealing performance. Unlike steel, Si₃N₄ does not react with liquid metals or corrosive media, offering excellent chemical stability and long-term reliability. Testing shows a service life three times longer than steel plungers, with consistent sealing and dimensional stability. Today, silicon nitride plungers are widely adopted in high-pressure cleaning pumps, coating systems, hydraulic presses, and fuel delivery units, helping customers achieve lower downtime and reduced maintenance costs.

2025

09/23

Addressing High Power Density and Thermal Failure Challenges — Silicon Nitride Ceramic Substrates Enable Stable Packaging for Next-Generation Semiconductors

As third-generation semiconductors such as SiC, GaN, and IGBT modules continue to evolve toward higher power density and switching frequency, customers face increasing challenges in thermal failure and device reliability. Under high-temperature and high-current operation, conventional alumina or aluminum nitride substrates often suffer from low thermal conductivity and poor mechanical strength, leading to overheating, solder fatigue, or delamination. The high thermal conductivity silicon nitride (Si₃N₄) ceramic substrate provides a breakthrough solution. Manufactured from high-purity Si₃N₄ powder through precision forming and sintering above 2000°C, it delivers a thermal conductivity >80 W/(m·K), along with excellent insulation, low dielectric loss, and superior flexural strength. Unlike conventional materials, silicon nitride’s thermal expansion coefficient closely matches silicon chips, reducing thermal stress and preventing delamination. Its high fracture toughness and thermal-shock resistance ensure reliability under rapid heating cycles and frequent start-stop operations, significantly extending the module’s service life. Silicon nitride ceramic substrates are now widely applied in EV motor drive modules, railway traction converters, high-speed train control systems, and fast-charging power units. Customer feedback shows up to 15% lower junction temperature and triple improvement in thermal cycling lifetime compared with traditional substrates. With their high thermal conductivity, mechanical reliability, and electrical insulation, silicon nitride ceramic substrates have become the preferred material for next-generation power electronics packaging and thermal management, supporting safer, longer-lasting, and more efficient semiconductor systems.

2025

08/11

Reducing Maintenance Frequency and Downtime — Wear-Resistant Silicon Nitride Ceramic Nozzles Greatly Improve Service Life

In paper-making and sandblasting industries, customers often face rapid nozzle wear and frequent replacements, causing costly downtime. Conventional metal nozzles erode quickly under high-pressure, high-velocity fluids and abrasive slurries. Silicon nitride ceramic nozzles offer a robust solution. Manufactured by hot-press sintering of fine Si₃N₄ powder, they achieve hardness above HRA 93 and wear resistance over eight times greater than stainless steel. The smooth, dense surface minimizes friction and prevents clogging during operation. These nozzles also resist chemical corrosion from pulp, acids, and alkaline liquids, providing over one year of continuous service life compared to just a few months for metal types. Users report lower spare-part costs, fewer maintenance interruptions, and improved dewatering and spray efficiency. As a result, production lines maintain higher consistency and reduced energy consumption.

2025

07/17

Dual Protection Against Thermal Shock and Corrosion — Silicon Nitride Ceramic Components Ensure Stable Production in Aluminum Casting

In low-pressure die-casting and aluminum foundry operations, many customers struggle with cracking and corrosion caused by molten aluminum and thermal shock. Frequent replacement of metal riser tubes or heater protection tubes not only raises maintenance costs but also disrupts production stability. The silicon nitride (Si₃N₄) ceramic riser tube and heater protection tube provide a long-term solution to these problems. Produced from high-purity Si₃N₄ powder and sintered above 2000 °C, these ceramic components feature high density, exceptional mechanical strength, and outstanding thermal-shock resistance. Even under rapid heating and cooling, they maintain full structural integrity and resist aluminum infiltration. Their low thermal-expansion coefficient and excellent thermal conductivity ensure uniform temperature distribution, minimize metal oxidation, and improve energy efficiency. In continuous operation, silicon nitride riser tubes can work for thousands of hours without replacement, while heater protection tubes effectively extend the life of heating elements. Field data show that customers using Si₃N₄ components experience up to 30 % higher production stability and cleaner molten aluminum quality. With their high-temperature strength, corrosion resistance, and long service life, silicon nitride ceramic structural parts are becoming key materials for modern aluminum casting operations.

2025

06/16

Reducing Maintenance Costs and Downtime — High-Strength Silicon Nitride Ceramic Balls Ensure Long-Term Stable Operation

For industrial machinery and electric motor users, bearing failure and frequent maintenance are key challenges affecting cost efficiency and productivity. Traditional steel bearings suffer from wear, corrosion, and lubrication failure, especially in harsh or high-speed environments. The High-Strength Silicon Nitride Ceramic Ball, sintered under hot isostatic pressing, provides a superior solution. With a hardness above HRA92 and bending strength exceeding 1000MPa, it offers unmatched durability and stability. The wear rate is 40% lower than steel, ensuring smooth operation even under poor lubrication or contamination. Its self-lubricating and anti-corrosive properties make it ideal for marine wind turbines, aerospace systems, and vacuum machinery. Customers report maintenance intervals up to 3 times longer than with steel bearings, minimizing downtime and improving productivity. In precision spindles, noise and temperature rise are reduced by over 20%, while continuous operation life exceeds 10,000 hours, providing measurable long-term savings. With these advantages, silicon nitride ceramic balls are increasingly adopted in advanced bearing applications requiring durability, stability, and low maintenance costs — meeting the evolving needs of next-generation industrial equipment.

2025

05/31

Solving High-Speed and Electrical Corrosion Challenges — HIP Silicon Nitride Ceramic Balls Greatly Enhance Bearing Reliability

In EV motors, machine tool spindles, and wind turbine systems, customers face recurring issues with bearing wear and electrical corrosion under high-speed, high-temperature conditions. Traditional steel balls tend to overheat, oxidize, and fail when exposed to stray currents — shortening system lifespan and increasing maintenance costs. To address these challenges, the High-Performance Hot Isostatic Pressed (HIP) Silicon Nitride Ceramic Ball provides a proven solution. Made from ultra-pure Si₃N₄ powder and sintered above 2000°C, the HIP process ensures full density and a pore-free structure, resulting in exceptional toughness and thermal stability. The ceramic ball combines high electrical insulationwith high mechanical strength, preventing electrical pitting and ensuring stable operation even at temperatures up to 1000°C. Weighing only 40% of a steel ball, it reduces rotational inertia and heat generation. Its self-lubricating surface minimizes friction and allows for maintenance-free operation, ideal for long-term reliability in EV motors and precision spindles. Applications include: Dental drill bearings (≈1mm) — ensuring ultra-high-speed stability EV motor bearings (≈10mm) — eliminating electrical erosion Wind turbine generator bearings (≈50mm) — improving durability and safety With advantages of lightweight design, wear resistance, insulation, and long lifespan, HIP silicon nitride ceramic balls are redefining the reliability standard for modern bearing engineering.

2025

05/20

Frequent Heater Maintenance? Si₃N₄ Heater Protection Tubes Last Over 12 Months in Molten Aluminum

In molten aluminum heating systems, metallic or graphite heater protection tubes often suffer from oxidation and corrosion, leading to frequent failures. The Silicon Nitride Heater Protection Tube provides exceptional durability, featuring flexural strength above 800 MPa, thermal conductivity of 25–30 W/m·K, and superior thermal shock resistance. Si₃N₄ is non-wetting to molten aluminum and chemically inert, maintaining the purity of the metal during long-term operation. It can withstand extreme thermal cycling up to 1000°C without cracking, ensuring stable heat transfer and protecting heating elements from direct metal exposure. Field reports show service life exceeding 12 months, reducing maintenance frequency by 70% and improving heating efficiency by 15%. The product has become the preferred choice for die casting plants, aluminum foundries, and continuous melting furnaces seeking energy efficiency and reliability. By preventing contamination and extending service intervals, Si₃N₄ heater tubes deliver both cost savings and consistent process stability in harsh industrial conditions.

2025

05/12

Low Dielectric Loss and High Strength Silicon Nitride Ceramic Substrates — The Preferred Choice for Next-Generation Semiconductor Packaging

As SiC (silicon carbide) and GaN (gallium nitride) technologies continue to reshape the power electronics industry, the demand for reliable, high-performance packaging materials is increasing. Silicon nitride (Si₃N₄) ceramic substrates, featuring low dielectric loss, high insulation strength, and exceptional mechanical toughness, have become a top choice for advanced power module applications. Made from high-purity Si₃N₄ powder and sintered above 2000°C, the silicon nitride ceramic substrate achieves a dielectric constant below 8 and a loss tangent (tanδ) 80W/m·K) with superior fracture toughness, making them ideal for EV drive systems, railway traction control units, and fast-charging modules. Today, silicon nitride ceramic substrates are widely used in new energy motor control systems, industrial inverters, power conversion modules, and 5G base station amplifiers, providing stable insulation and effective heat dissipation. With their unmatched balance of thermal, electrical, and mechanical performance, Si₃N₄ substrates are redefining the standards of next-generation semiconductor packaging.

2025

02/28

Overheating EV Power Modules? High-Insulation Si₃N₄ Substrates Improve System Reliability

Electric vehicle power modules often operate under extreme conditions — high current, high frequency, and continuous thermal cycling. These stresses cause delamination, solder fatigue, and eventual device failure. The High-Insulation Silicon Nitride Substrate is engineered to address these problems by combining high thermal conductivity (≥90 W/m·K), superior dielectric strength (≥20 kV/mm), and exceptional mechanical robustness (≥600 MPa) in a single platform. With a CTE of 3×10⁻⁶/K, the substrate matches the silicon or SiC chips perfectly, reducing thermal fatigue and enhancing long-term reliability. The AMB or DBC copper metallization provides excellent adhesion and low thermal resistance for efficient heat dissipation. Field data shows that Si₃N₄-based modules can operate over 2000 hours at 125°C without degradation, and maintain stability across more than 100,000 thermal cycles. Today, Si₃N₄ substrates are widely used in EV traction inverters, on-board chargers, DC-DC converters, and energy storage systems, providing safer operation, higher power density, and longer service life compared to traditional ceramics. For manufacturers seeking next-generation reliability, this technology ensures outstanding electrical insulation and thermal management performance under harsh automotive environments.

2025

02/04

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Wuxi Special Ceramic Electrical Co.,Ltd
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