Semixlab Glassy carbon coated graphite substrate

Glassy carbon coated graphite substrate is a composite material with graphite as the base material, impregnated or coated with glassy carbon, which combines the excellent conductivity and high temperature resistance of graphite with the high chemical inertness, density and smooth surface characteristics of glassy carbon.

To meet the evolving needs of the industry, we have developed a diverse product portfolio that is fully equipped to meet the requirements of next generation coating technologies, ensuring we can provide solutions that keep pace with the latest advancements in the semiconductor field.

Application:

From the perspective of application fields, the application range of glassy carbon coated graphite is very wide. In the field of semiconductor materials, due to its excellent high temperature resistance, oxidation resistance and conductivity, it has become an ideal material for manufacturing high-performance integrated circuit boards and electronic devices. In the field of continuous casting materials, glassy carbon coated graphite is widely used in the crystallizer lining of continuous casting machines due to its good lubricity and high temperature resistance, effectively improving the continuous casting efficiency and the quality of the ingot. In addition, in the fields of aerospace, nuclear industry, metallurgy, chemical industry, etc., glassy carbon coated graphite also plays an irreplaceable role.

Services that can be provided:

customer application scenario analysis, matching materials, technical problem solving.

Company profile:

Semixlab has 2 laboratories, a team of experts with 20 years of material experience, with R&D and production, testing and verification capabilities.

Quick Detail:

a. main application: Glassy carbon coated graphite substrates have a wide range of applications in various fields such as semiconductors, energy, special coating technologies and emerging technologies due to their unique physical and chemical properties. With the continuous advancement of technology, its application range and importance are expected to expand further.

b. Preparation process:

Coating process:

The graphite substrate is immersed in a carbonizable polymer precursor solution and a uniform coating is formed by spin coating, spray coating or chemical vapor deposition (CVD).

High temperature carbonization:

High temperature treatment (1000–3000°C) in an inert atmosphere (such as argon) converts the polymer into glassy carbon, which is tightly bonded to the graphite substrate.

c. Core specification parameters:

coating thickness (selected according to the corrosive environment, with an optimum thickness of 50-100μm); substrate graphite density (high density is more resistant to penetration); atmosphere of use (oxidizing/inert); Heating rate ≤10℃/min (reduce interface stress); Using temperature in air ≤600℃ (inert gas protection is required if exceeding)

Key performance comparisons

Main application fields

Ecological chain verification endorsement

Passed reliability verification by manufacturers such as Sinosteel
Corporation and FangDa.

Typical production process

Select substrate (graphite material with porosity of 10%-15%) → Surface cleaning(1000-2000 rpm/min, 30-60min) and preheating(150-200℃, 1-2h) → Preparation of phenolic resin solution(200-500 rpm/min, 30-60min, viscosity: 500-1000mpa·s) → Dip treatment(30-50℃, 2-4h, pressure: 5-10mpa) → Low temperature curing(150-200℃, 2-4h) → Carbonization treatment(1000℃, 1-2h, 0.01mpa) → High temperature graphitization treatment(10℃/min, 2500℃)

Through continuous technological innovation and product development, Semixlab's glassy carbon coated graphite substrate has achieved a breakthrough in domestic graphite materials, meeting the growing demand for glassy carbon coated graphite in cutting-edge fields such as new energy vehicles, energy storage systems, and semiconductor materials. If you need to obtain detailed technical white papers or arrange sample testing, please contact our technical support team.

Semixlab Glassy carbon coated graphite substrate Core advantages

Chemical resistance:

Resistant to strong acids, strong alkalis, and molten metals (such as Al and Cu).

Surface purity:

High purity (ash content <0.01%).

Antioxidant:

Surface oxidation resistance temperature increased to 500-600℃.

Mechanical strength:

Increase surface hardness (reduce wear).

Cost:

30-50% lower than pure glassy carbon products.