CVD SiC Coated Wafer Boat for Oxidation & Diffusion

At Semixlab, we make SiC coated wafer boats for demanding semiconductor environments – where consistency, cleanliness, and a long service life really matter.

We start with high-purity silicon carbide ceramic (SiC ceramic, purity above 99.9%) and apply a dense CVD silicon carbide (CVD SiC) coating with 6N purity. That way, our boats keep their structural stability even after repeated heating and cooling, and they help lower contamination risks during production.

What is a SiC coated wafer boat anyway?

A wafer boat is basically a carrier that holds several wafers during thermal processing. It keeps wafers at the right spacing and support, while making sure heat transfers evenly across them.

Compared with conventional graphite wafer carriers, advanced SiC ceramic wafer boats offer better thermal stability, purity control, and oxidation resistance in semiconductor furnace environments. But under aggressive semiconductor conditions – over time – you can run into things like surface oxidation, particles shedding off, or chemical erosion.

That’s why people often go with SiC coating.

The silicon carbide layer forms a dense protective coating over the graphite surface. It improves:

-Oxidation resistance

-Chemical corrosion resistance

-Surface hardness

-Particle control

-How long the part lasts

This is why CVD SiC coated wafer boats are widely used in oxidation furnaces, diffusion furnaces, and other high-cleanliness thermal processing systems.

Key features of Semixlab SiC coated wafer boats

High-purity surface

Impurities can directly hurt your wafer yield. We optimize our coating process for semiconductor-grade purity, so we can help minimize metallic contamination during production.

Great thermal stability

During oxidation and diffusion processing, wafer boats must maintain dimensional stability and ultra-clean surfaces under repeated high-temperature cycles. Our wafer boats are engineered to hold their dimensions through repeated heat-up and cool-down cycles.

Low particle generation

Because the surface is densified, less graphite is exposed – which means fewer particles come off, and you get a cleaner process environment.

Uniform coating coverage

Complex slot structures and corners need consistent coating thickness. Our in-house coating process helps us achieve better surface uniformity across the whole part.

Custom machining capability

Different equipment platforms need different dimensions. We support custom designs based on your drawings or process requirements.

Manufacturing & quality control

Each wafer boat undergoes precision ceramic machining, surface preparation, and high-purity CVD SiC coating deposition.

At Semixlab, every part goes through:

-Raw material inspection

-Precision CNC machining

-Surface cleaning treatment

-CVD SiC coating

-Dimensional verification

-Final appearance and quality inspection

We do this so you get reliable performance before the part ever goes into your tool.

Why choose Semixlab?

We’re a specialized manufacturer of semiconductor graphite and coating components. We help customers with:

-In-house coating technology

-Flexible custom production

-Fast engineering communication

-Knowledge of semiconductor processes

-Stable international supply capability

Whether you’re developing equipment, running a pilot line, or doing mass production, our engineering team can support your application needs.

If you’re looking for a reliable SiC coated wafer boat supplier, Semixlab can give you custom solutions based on your drawings or process conditions.

Actual specs can be adjusted depending on your application conditions.

Our SiC coated wafer boats are widely used in:

● Semiconductor oxidation furnaces

● Semiconductor diffusion furnaces

● Thermal annealing systems

● Semiconductor heat treatment equipment

● Advanced semiconductor R&D applications

● Annealing processes

● High-temperature semiconductor material research