SiC Coated

VET ENERGY, Leading manuafacturer of CVD SIC coating in China

Materials Change The Future

Silicon carbide (SiC) is a new compound semiconductor material. Silicon carbide has a large band gap (about 3 times silicon), high critical field strength (about 10 times silicon), high thermal conductivity (approximately 3 times silicon). It is an important next-generation semiconductor material. SiC coatings are widely used in the semiconductor industry and solar photovoltaics. In particular, the susceptors used in the epitaxial growth of LEDs and Si single crystal epitaxy require the use of SiC coating. Due to the strong upward trend of LEDs in the lighting and display industry, and the vigorous development of the semiconductor industry, SiC coating product prospects are very good.



Product application and performance                                                                                                  Product applications and uses

Si single crystal industry, GaN, AlN, sapphire and other MOCVD pedestals.                                               -Graphite base coating for single crystal silicon epitaxial growth

Main performance: high purity, erosion resistance, high thermal conductivity,                                          - MOCVD process, graphite base coating for GaN epitaxial growth

                                    high temperature resistance, low thermal expansion coefficient.


Semiconductor Industry
Semiconductor Industry
Semiconductor Industry
Solar photovoltaic


Thermal Conductivity 250 W/m °K Laser flash method, RT
Thermal Expansion (CTE) 4.5 x 10-6 °K Room temp to 950 °C, silica dilatometer
       Property Value Method
Density 3.21 g/cc Sink-float and dimension
Specific heat 0.66 J/g °K Pulsed laser flash
Flexural strength 450 MPa560 MPa 4 point bend, RT4 point bend, 1300°
Fracture toughness 2.94 MPa m1/2 Microindentation
Hardness 2800 Vicker's, 500g load
Elastic ModulusYoung's Modulus 450 GPa430 GPa 4 pt bend, RT4 pt bend, 1300 °C
Grain size 2 - 10 µm SEM



Purity,SEM Structure,thickness analysis of SiC coating

The purity of SiC coatings on graphite by using CVD is as high as 99.9995%. Its structure is fcc. The SiC films coated on graphite is (111) oriented as shown in the XRD data (Fig.1) indicating its high crystalline quality. The thickness of the SiC film is very uniform as shown in Fig. 2.

SEM data of CVD SiC thin film, the crystal size is 2~1 Opm


Fig. 2: thickness uniform of SiC films

The crystal structure of the CVD SiC film is a face-centered
 cubic structure, and the film growth orientation is close to 100%


SEM and XRD of beta‐SiC film on graphite



Product performance and application prospects.

Silicon carbide (SiC) coated base is the best base for single crystal silicon and GaN epitaxy, which is the core component of the epitaxy furnace. The base is a key production accessory for monocrystalline silicon for large integrated circuits. It has high purity, high temperature resistance, corrosion resistance, good air tightness and other excellent material characteristics.

Product application and use

Graphite base coating for single crystal silicon epitaxial growthSuitable for Aixtron machines, etcCoating thickness: 90~150umThe diameter of the wafer crater is 55mm.



graphite crucible coating for single crystal silicon by straight-pull method


single crystal silicon industrial production by straight-pull method, three-petaled crucible as high temperature bearing and uniform heat conduction parts, flow tube as exhaust gas circulation channelheat conduction parts, flow tube as exhaust gas circulation channel
Product features
Hightemperature resistance, corrosion resistance, long service life, can improve the quality and output of the wafer. With very low coefficient of thermal expansion, high temperature resistance, high wear resistance, good insulation, good chemical stability, near purple (red) outside visible light penetration.
          图片20 图片19 图片18

Why choose us

Professional equipment and team

Class 1000 dust-free workshop

* more than 3000 square meters of 1000 class dust-free workshop

Cooperative R & D team of Chinese Academy of Sciences 

* Specialized production and precision testing equipment

* Sufficient and high-quality production capacity86b0afaa78106ff600d26e97300491b



Quick Service

For before-order tage,our professional sales team could respond your inquiry within 50-100 minutes during working hours and within 12 hours during close time. Quick and professional reply will help you win your client with perfect option at high efficiency.

For order-running stage, our professional service team will take pictures every 3 to 5 days for your 1st hand information update of the production and provide documents within 36 hours to update shipping progress. We pay high attention to after-sale service.

For after-sale stage, our service team always keep close contact with you and always stand by at your service. Our professional after sale service even include fly our engineers to help you solving problems on site. Our warranty is 12 months after delivery.

Packaging details



Ningbo VET Energy Technology Co., Ltd is a professional manufacturer for graphite parts, especially in development of new semiconductor materials and focusing on the research and development of SiC coating. The company's main products are SiC-coated susceptors for LED industry and monocrystalline silicon industry. The SiC film used for LED industry and monocrystalline silicon industry is cubic phase, which has the same lattice structure as diamond, and its hardness is only as good as diamond. Silicon carbide is the most mature wide band gap semiconductor material, and has broad application prospects in the semiconductor industry. In addition, silicon carbide has a high thermal conductivity, a small thermal expansion coefficient, high temperature resistance (about 2700 degrees Celsius), and excellent corrosion resistance. The company's silicon carbide coating products are also widely used in aerospace, photovoltaic industry, nuclear energy, high-speed rail, automotive and other industries.


Do you have a minimum order quantity?

Yes, we require all international orders to have an ongoing minimum order quantity.

Can you supply the relevant documentation?

Yes, we can provide most documentation including Certificates of Analysis / Conformance; Insurance; Origin, and other export documents where required.

What is the average lead time?

For samples, the lead time is about 7 days. For mass production, the lead time is 15-25 days after receiving the deposit payment. The lead times become effective when we have received your deposit, and we have your final approval for your products. In all cases we will try to accommodate your needs. In most cases we are able to do so.

What kinds of payment methods do you accept?

You can make the payment to our bank account, Western Union or PayPal:
30% deposit in advance, 70% balance before shipment or against the copy of B/L.

What is the product warranty?

We warranty our materials and workmanship. Our commitment is to your satisfaction with our products. In warranty or not, it is the culture of our company to address and resolve all customer issues to everyone’s satisfaction

Do you guarantee safe and secure delivery of products?

Yes, we always use high quality export packaging. We also use specialized hazard packing for dangerous goods and validated cold storage shippers for temperature sensitive items. Specialist packaging and non-standard packing requirements may incur an additional charge.

How about the shipping fees?

The shipping cost depends on the way you choose to get the goods. Express is normally the most quickest but also most expensive way. By seafreight is the best solution for big amounts. Exactly freight rates we can only give you if we know the details of amount, weight and way. Please contact us for further information.


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