Ceramic Parts for Semiconductor Processing

Modern semiconductor fabrication operates at the absolute edge of material science limits. Inside every advanced fab, process engineers routinely confront hostile vacuum chamber conditions.
These environments feature extreme plasma densities that strip atoms from surfaces, aggressive halogen chemistries that corrode standard metals in a matter of hours, and severe thermal cycles peaking at 1200°C. In these demanding conditions, even a single microscopic particle from a degraded component will bridge sub-micron lines on a wafer, destroying yields instantly.
At C-Mac International, we have engineered specialized technical ceramic solutions for these extreme fabrication environments since 2005. We work directly with equipment OEMs, R&D labs, and process engineers to manufacture high-purity components that survive where conventional metals and polymers fail.
Our custom manufacturing capabilities cover precise material selection, diamond grinding, and ultra-flat finishing tailored to specific semiconductor toolsets. For general information on our raw materials and capabilities across other demanding markets, you can explore our complete industrial ceramics catalog.

Materials We Work With: High-Purity Ceramic Selection

Selecting the right technical ceramics for semiconductor manufacturing requires matching material chemistry, grain boundaries, and dimensional stability to the specific gases inside a chamber. These are not commodity components. They are precision-engineered solutions where minor mineral deviations directly impact tool uptime, particle counts, and wafer yields.

At C-Mac International, we align specific process chemistries with optimized ceramic grades to eliminate premature component erosion. Our core material expertise focuses on high-performance oxide and non-oxide ceramics:

We manufacture semiconductor-grade ceramic components using high-purity alumina grades ranging from 96% to 99.8%. This material provides excellent dielectric strength, high mechanical hardness, and strong resistance to thermal degradation. High-purity alumina is essential for plasma-facing hardware, critical wafer transport machinery, and high-voltage insulators where contamination control is a paramount priority.

To read more about the mechanical properties and thermal constraints of this material, view our dedicated guide on alumina ceramic aluminum oxide.

Alumina ceramic discs

In fluorine-heavy and chlorine-heavy etching plasma, silicon carbide outperforms oxide-based materials. Our high-density SiC components withstand intense, continuous ion bombardment without micro-cracking or shedding particles.

This material also features high thermal conductivity and a low coefficient of thermal expansion, which makes it ideal for components exposed to rapid temperature swings inside deposition chambers.

Silicon carbide ceramic parts

Silicon nitride (Si₃N₄) is an advanced technical ceramic that delivers an excellent performance-to-cost-benefit ratio for applications where standard ceramics fall short. Characterized by its dark gray to black color, this man-made material can be machined and polished to a very smooth, reflective surface. This superior surface finish is critical in fab environments to prevent particle shedding during dynamic operations.

Compared to other industrial ceramics, silicon nitride provides higher thermal shock resistance and exceptionally low thermal expansion. Because it maintains high mechanical strength and fracture toughness at a wide range of temperatures, it is an ideal material for semiconductor components and precision wafer handling parts that experience rapid thermal cycling.

Furthermore, its high chemical and corrosion resistance ensures reliable performance and a long service life, actively reducing tool maintenance and replacement costs in demanding fab conditions.

Silicon nitride components

While zirconia is rarely used in high-density plasma-facing zones due to chemical compatibility limits, its mechanical characteristics remain highly valuable in specific areas. We utilize specialized zirconia formulations exceptionally sparingly, reserving them exclusively for high-stress mechanical parts.

These parts include heavy-duty industrial valve seats, precise alignment bushings, and high-wear positioning pins that require fracture toughness superior to alumina. You can learn more about its specific stabilizing phases and stress-induced transformation behaviors by reviewing our technical breakdown of zirconia ceramic zirconium oxide.

Note: C-Mac International does not manufacture semiconductor components using Aluminum Nitride (AlN) or Yttria (Y₂O₃).

Zirconia ceramic components

Semiconductor Applications & Processes

Our advanced ceramics semiconductor components are purpose-built to endure the specific mechanical and chemical challenges found throughout modern sub-micron manufacturing processes.

  • Plasma Etch
  • CVD & PVD Deposition
  • Lithography & Wafer Inspection
  • Rapid Thermal Processing (RTP)
  • Ion Implantation
  • Diffusion & LPCVD
  • Electronic Packaging and Hybrid Circuits
alumina

Plasma Etch

Corrosive halogen chemistries like fluorine and chlorine rapidly degrade conventional metals, forming volatile metal halides that compromise wafer yields.
C-Mac manufactures high-purity alumina and silicon carbide components engineered to withstand aggressive ion bombardment over thousands of active etch cycles. These high-density materials stabilize plasma distribution across the wafer surface and minimize particle generation to satisfy ultra-clean fab environment specifications.

zirconia

CVD & PVD Deposition

Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) systems require advanced ceramic semiconductor materials that resist rapid coating buildup and chemical breakdown.
Our custom ceramic susceptors and lift components maintain their structural integrity under aggressive precursor gas exposures, preventing thickness variations across processed lots.

zirconia

Lithography & Wafer Inspection

Sub-micron lithography and automated inspection systems demand absolute structural rigidity and positional repeatability during high-speed indexing. Minimal thermal expansion or component flexure during wafer transport introduces micro-positional errors, directly compromising overlay registration.
Our ultra-flat ceramic components maintain dimensional stability under dynamic mechanical stresses. This precision eliminates tracking errors and structural deflection while preventing dynamic particle shedding during robotic handling.

silicon

Rapid Thermal Processing (RTP)

RTP tools cycle components from room temperature up to 1200°C in a matter of seconds. Standard structural materials quickly crack under that intense thermal shock. We precision-manufacture custom ceramic susceptors and reflectors that survive hundreds of thousands of rapid thermal cycles without undergoing structural degradation or geometric warping.

magnesia

Ion Implantation

Ion beam lines require heavy-duty electrical insulators that do not charge up or outgas under high-vacuum conditions. Our technical ceramics semiconductor manufacturing processes deliver high-resistivity parts that prevent electrical arcing. They keep the beam path perfectly clean, directly supporting dopant uniformity across the entire batch.

crushable

Diffusion & LPCVD

High-temperature furnaces require structural components that maintain deep purity at 800°C to 1000°C for hours at a time. We manufacture high-purity alumina and silicon carbide process tubes, boats, and fixtures. These parts resist high-temperature oxidation and prevent trace metal migration during extended thermal runs.

ceramic-crucibles

Electronic Packaging and Hybrid Circuits

Beyond active chamber components, advanced electronics require robust electrical isolation and clean thermal paths for final assembly. We produce high-precision thick film substrates and thin film substrates designed to handle tight trace spaces. For multi-component assemblies, we manufacture custom thick film hybrid substrates and thin film hybrid substrates.
These technical ceramic substrates allow engineers to mount delicate dies, resistors, and capacitors together on a single, thermally stable platform. To protect these completed microelectronic packages from ambient moisture and particle contamination, we provide matching ceramic lids and ceramic caps that create reliable, hermetic seals.

Wafer Size Compatibility and Geometric Specifications

Semiconductor ceramic applications do not fit the catalog charts. Tool designs vary by wafer generation, and precision tolerances are the real manufacturing constraint. C-Mac International manufactures precise ceramic components and semiconductor industry parts for tool sets ranging from 100mm legacy lines up to advanced 300mm wafer systems.
To help R&D personnel and procurement managers evaluate our exact structural capabilities, we maintain the following machining and surface quality limits for large-scale wafer plates, round discs, and square plates:
Round ceramic disc components

Round Disc Components

  • Maximum diameter: 800 mm with a Total Thickness Variation (TTV) of 5 µm
  • Standard accurate diameter: 650 mm machined to a 1 µm absolute accuracy tolerance
Square ceramic plate components

Square Plate Components

  • Maximum size (diagonal): 800 mm with a Total Thickness Variation (TTV) of 5 µm
  • Standard accurate diagonal: 650 mm machined to a 1 µm absolute accuracy tolerance
Standard production ceramic blanks

Standard Production Sizes (Diameter * Thickness, in Millimeters)

  • We maintain raw technical ceramic blanks in these standardized sizing footprints to ensure fast turnaround times for fab tool maintenance and OEM replacement lines:
    • 240 mm * 15 mm
    • 360 mm * 15 mm
    • 485 mm * 16 mm
    • 520 mm * 20 mm
    • 576 mm * 22 mm
    • 635 mm * 25 mm
    • 800 mm * 40 mm

Critical Component Portfolio

We manufacture semiconductor-grade ceramic components engineered for specific equipment footprints, matching your exact CAD specifications to tight tolerances of +/-0.0005 inches. Our core component portfolio includes:
Critical Component Portfolio

Focus rings and edge rings

Machined for precise plasma containment and uniform wafer edge erosion control.

Chamber liners and shields

Designed to shield metal vacuum walls from corrosive halogen chemistries.

Electrostatic chuck (ESC) insulators

Manufactured from high-purity alumina to prevent voltage breakdown under vacuum.

Gas distribution showerheads

Precision-drilled with micron-scale hole patterns to ensure uniform process gas delivery.

Robotic end effectors

Lightweight, high-rigidity arms built for clean wafer transport without particle shedding.

Substrates and enclosures

High-purity thick/thin film hybrid substrates, ceramic lids, and ceramic caps for microelectronic shielding.

Partner with C-Mac for Semiconductor Tooling Solutions

Our engineering team is ready to analyze your drawings, material requirements, and operational parameters. Contact us today to receive professional material recommendations, detailed manufacturability feedback, and accurate commercial quotes within 48 hours.
Please call our engineering group directly at (412) 794-8007, or submit your technical drawings through our secure online C-Mac International contact portal to start your project consultation.
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