Silicon Carbide Plate: The Ultimate Guide for Industry Professionals

Silicon Carbide Plate: The Ultimate Guide for Industry Professionals

Brief Overview of Silicon Carbide (SiC) As a Material

Silicon carbide (SiC) is a highly durable and strong material known for its hardness and high thermal conductivity.

This hardness makes silicon carbide an excellent material for abrasives, cutting tools, and components that must withstand high levels of wear.

Due to its unique properties, silicon carbide is widely used in industrial, electronic, and energy fields, especially in power electronics and high-voltage, high-temperature devices such as LEDs.

What are Silicon Carbide Plates?

Definition of Silicon Carbide Plates

Silicon carbide plates are a form of silicon carbide manufactured into a flat shape that combines the inherent properties of SiC such as extremely high hardness, thermal stability, thermal conductivity, and resistance to wear, corrosion, and thermal shock, making it ideal for a variety of applications, and due to its robustness, silicon carbide plates also have their unique application value in environments with high temperatures, mechanical stress and corrosive substances.

silicon carbide plate

Manufacturing Process of Silicon Carbide Plates

Powder Preparation

High-purity silicon carbide powder is prepared and the powder mixture is ground to achieve the desired particle size and uniformity, which is critical to sheet consistency and quality.


The prepared powder is shaped into tablets by dry pressing, isostatic pressing, or slip molding.


To sinter the green body, different sintering methods can be used, including pressureless sintering, hot pressing, and reactive bonding.


After sintering, the board may need to be machined to obtain precise dimensions or surface finish.

Silicon carbide is very hard, so diamond tools are often used for cutting and shaping. Depending on the application, sheets may also be surface treated to enhance properties such as corrosion resistance or to apply coatings.

Quality Control

strict quality control measures are implemented during the entire manufacturing process.

This includes inspections of density, porosity, mechanical strength, and dimensional accuracy to ensure the board meets the required specifications.

Types of Silicon Carbide Plates and Their Properties





It is a unique method that combines traditional ceramic process technology with chemical reaction processes, which can produce silicon carbide of complex shapes and sizes.

excellent wear resistance and high thermal shock resistance, less expensive, cost-effective


Created through a pressureless sintering process, where finely powdered silicon carbide is compacted and then heated to a high temperature in an inert atmosphere, allowing the particles to bond without the application of external pressure.

excellent hardness, high thermal conductivity, and low thermal expansion


Combines high pressure and high temperature to densify the silicon carbide powder in a mold. The applied pressure helps to achieve higher densities and eliminate porosity more effectively than pressureless sintering.

Superior mechanical properties, high hardness and strength


Produced by sintering silicon carbide powder at high temperatures until it recrystallizes. This process does not involve pressure or additional sintering aids, leading to a product with larger, interconnected grains.

good thermal shock resistance and high temperature stability


A variant of reaction-bonded silicon carbide, where additional silicon is introduced to the body after the initial reaction bonding process. This additional silicon fills the pores, further enhancing the density and strength of the material.

excellent hardness, superior wear resistance, and high thermal conductivity.

Benefits of Silicon Carbide Plate

  • High temperature resistance
  • Superior hardness and wear resistance
  • Excellent thermal conductivity and shock resistance
  • Chemical inertness in corrosive environments
  • Exceptional Hardness and Wear Resistance
  • Low Thermal Expansion
  • Lightweight
  • Biocompatibility

Applications of Silicon Carbide Plate

With its own advantages, silicon carbide plates are widely used in industrial machinery components, protective armor and semiconductor substrates to the automotive, aerospace and energy fields. Silicon carbide plates are considered a valuable resource as it helps advance technology and industrial efficiency.

Silicon Carbide Armor Plate:

Compared with traditional materials, silicon carbide plates have high hardness and light weight and can be used in body armor, vehicle armor and aircraft armor plates.

Semiconductor Devices

In the electronics industry, especially in high-power, high-frequency applications, SiC plates are used as substrates for semiconductor devices. SiC’s ability to operate at high temperatures and high voltages significantly increases the efficiency and performance of devices such as diodes, transistors and power modules.

Role in industrial heat exchangers and furnaces

Due to its thermal conductivity and resistance to thermal shock, sic plate is ideally suited for use in heat exchangers and furnaces especially in harsh environments. SiC plates can efficiently transfer heat and withstand severe temperature fluctuations, thereby increasing system reliability and efficiency.

silicom carbide plate in automotive and aerospace components

Importance in automotive and aerospace components

Silicon carbide plates are often used in the automotive industry, such as brake discs and clutch plates. Its durability and heat resistance improves the performance and longevity of these components.

In aerospace applications, SiC plates are primarily used for components requiring high thermal conductivity, oxidation resistance, and high-temperature strength. Examples include turbine components and thermal protection systems.

Comparing Silicon Carbide Plates with Alumina Ceramics


Silicon Carbide (SiC)

Alumina Ceramics


Very High (Mohs 9-9.5)

High (Mohs 9)

Thermal Conductivity

High (~490 W/mK)

Moderate (~30 W/mK)

Thermal Shock Resistance



Mechanical Strength

Very High


Chemical Stability


Very Good

Wear Resistance


Very Good




Selecting the Appropriate Silicon Carbide Plate

This thorough guide on selecting the best silicon carbide plate will help you take into account several important factors when making your choice.

  • Recognize your application’s needs: Prioritize your needs before taking into account the manufacturing method, material selection, quality control strategy, and other factors that could have an impact on the silicon carbide plate’s quality.
  • Select the appropriate standards and specifications: Various standards are appropriate for various uses. Make sure the standards and specifications you select meet your needs.
  • Assess supplier and products: Select a dependable manufacturer and research their track record, offerings, and merchandise.


Because of their adaptability, silicon carbide plates can be used to fulfill the exacting needs of a wide range of high-performance applications.

This versatility enables them to offer solutions that greatly improve performance, durability, and efficiency.

Discover the unparalleled performance and endurance of our silicon carbide plates if you’re searching for high-quality silicon carbide. Shop our products now and elevate your project’s standards!

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