TaC Coated Susceptor

Name: TaC Coated Susceptor
Brand: SiC Graphite
SKU: tac-coated-susceptor
Availability: InStock
Rating: 4.9 (24 reviews)

TaC coated graphite susceptors and seed-support components for ultra-high-temperature compound semiconductor processes that require stronger vapor corrosion resistance than conventional graphite or SiC coating.

Target Buyer:R&D and production teams qualifying high-value TaC coated graphite parts for next-generation crystal growth.

TaC coated graphite susceptor for advanced wide-bandgap crystal growth 1

Capability Highlights

Tantalum carbide coating for extreme thermal and chemical stability
Custom seed holder, tray, and susceptor geometry review
Built for SiC, AlN, and advanced wide-bandgap material development

Typical Applications

SiC Seed Supports
AlN Growth Components
Advanced Wide-Bandgap R&D Reactors

Engineering Focus

Coating thickness and coverage map
Seed-contact surface condition
Thermal expansion and stress control

Key Evaluation Matrix

Metric	Typical Range	Why It Matters
Process Fit	SiC / AlN ultra-high-temperature growth review	TaC coated susceptors are project-specific parts where geometry and process exposure drive feasibility.
Surface Acceptance	Buyer-defined contact surface and visual criteria	Seed-contact and vapor-facing surfaces need clearer acceptance criteria than generic coated graphite parts.
TaC Coating Route	CVD TaC on high-purity graphite substrate	The coating route must match geometry, vapor exposure, and thermal-cycle stress.
Ultra-High-Temperature Use	Project review for 2000-2300°C class hot zones	TaC is used when conventional graphite or SiC coating cannot provide enough high-temperature stability.
Coating Map	Buyer-marked vapor-facing, contact, and masked surfaces	Unclear coating boundaries create fit risk, shadow areas, and early erosion points.
Trace Element Control	Buyer-defined Ta, Fe, Ni, Al, Ca, V, Ti limits	High-value crystal-growth programs need contamination limits agreed before sample production.

Engineering Datasheet

Product-Level Technical Specifications

Values below are RFQ planning targets, not blanket guarantees. Final acceptance criteria should be frozen against drawings, process conditions, equipment model, and buyer qualification requirements.

Parameter	Target / Typical Scope	Engineering Note
Part architecture	Drawing-based susceptor, seed holder, tray, or support geometry with TaC coating	TaC susceptors are usually project-specific because contact surfaces and vapor exposure vary by reactor.
Seed-contact surface	Buyer-defined flatness, roughness, and visual acceptance criteria	Seed-contact surfaces require clearer criteria than non-contact thermal-field hardware.
Coating type	CVD TaC coating on vapor-facing and process-contact surfaces	Coating feasibility depends on pocket depth, blind features, line-of-sight, and masking scope.
Operating environment	SiC / AlN ultra-high-temperature growth review	Temperature, vapor species, cleaning exposure, and thermal cycling should be stated in the RFQ.
Dimensional tolerance	CTQ pocket, seed seat, thickness, OD/ID, hole pattern, and support features by drawing	Post-coating tolerance review prevents seed misfit, wobble, and assembly interference.
Cleaning and packing route	Clean handling, separator, and bagging method defined before shipment	Contact surfaces can lose value through fingerprints, abrasion, or particle contamination after QC.

Trace Impurity Review Table

Semiconductor programs should define restricted elements before sample production. The table helps procurement and process teams turn purity expectations into a measurable qualification file.

Element	Typical Limit	Why Controlled
Fe / Cr / Ni	Buyer-defined trace-metal limits	Contact and vapor-facing parts need restricted metallic background before qualification.
Al / Ca / Na	Project-specific acceptance boundary	Common elements to define for high-purity graphite substrate and post-coating handling.
B / V / Ti	Defined by SiC / AlN process sensitivity	Relevant when buyers evaluate dopant background, contamination, or crystal defect risk.
Ta	Reported as TaC coating element where required	Useful for buyer-side records separating intended coating chemistry from contamination limits.

RFQ Evidence Package

These records reduce ambiguity before sample approval and repeat-order release.

2D/3D drawing with seed-contact, vapor-facing, masked, and fit-critical surfaces marked.
Surface acceptance criteria for seed-contact or wafer-contact areas before sample release.
TaC coating map with visual inspection photos and coating-feasibility notes.
Trace-element table or COA scope for graphite substrate and coated part release.
Clean packing photos showing separators and protection for contact surfaces.

Equipment Compatibility Review

Compatibility should be treated as an engineering review, not a catalog claim. Equipment-family language helps buyers route the RFQ, while final production still depends on drawings, samples, coating allowance, and acceptance criteria.

Equipment Family	Compatible Part Scope	Buyer Validation Required
SiC seed support and PVT growth systems	TaC coated seed holders, susceptors, trays, and vapor-facing support parts.	Confirm seed diameter, contact surface, thermal gradient position, coating boundary, and support interface.
AlN growth and advanced R&D reactors	TaC coated graphite supports and susceptors for ultra-high-temperature process development.	Confirm temperature window, vapor chemistry, cleaning exposure, masking surfaces, and trace-element reporting.
Custom wide-bandgap material reactors	Drawing-based TaC coated susceptors where geometry and process exposure define feasibility.	Confirm 2D/3D model, current failure mode, acceptance evidence, and sample-to-batch qualification path.

Open full OEM compatibility matrix

Product Selection Logic

Decision Factor	Selection Logic	Buyer Check
Temperature ceiling	Review TaC coated graphite when the component faces SiC PVT, AlN growth, or vapor exposure beyond the reliable window of standard graphite or SiC coating.	Share maximum temperature, hot-zone position, atmosphere, vapor species, and current lifetime.
Coating feasibility	TaC coating feasibility depends on line-of-sight, feature depth, edge radii, masked surfaces, and final dimensions after coating.	Send drawings with vapor-facing surfaces, seed-contact surfaces, grooves, holes, and uncoated interfaces marked.
Contamination control	High-purity graphite substrate, purification route, and trace-element reporting should be agreed before prototype release.	Define restricted elements, report format, packaging cleanliness, and sample acceptance criteria.

Manufacturing and QC Flow

Stage	Production / QC Checkpoint	Buyer Evidence
1. Process and geometry review	Confirm hot-zone position, growth temperature, vapor exposure, coated surfaces, and masked interfaces.	Marked drawing, process notes, current failure photos, and lifetime target.
2. Substrate and purity plan	Select high-purity graphite substrate and define purification plus trace-element reporting scope.	Material route, ash target, restricted-element list, and COA expectations.
3. Pre-coating machining	Machine OD, ID, grooves, seed-contact surfaces, and CTQ interfaces with coating allowance reviewed.	First-article dimensional data for pre-coating critical features.
4. CVD TaC coating	Deposit TaC on agreed surfaces while controlling coating stress, edge coverage, and shadow risk.	Coating map, visual acceptance criteria, and inspection method agreed before production.
5. Final inspection and clean packing	Inspect contact surfaces, coated areas, fit-critical features, and export protection for brittle coated parts.	Final photos, dimensional checks where required, packing photos, and traceable shipment documents.

RFQ Checklist

Send 2D/3D drawings with seed-contact and vapor-facing surfaces marked
Define wafer or seed diameter, pocket geometry, and flatness target
Specify maximum temperature, atmosphere, and cleaning exposure
List required trace-element, visual, and dimensional acceptance evidence

Risk Controls

Seed-contact contamination or imprint risk: Define contact-surface finish, cleaning route, and packing method before sample production.
Coating shadow on complex geometry: Review pocket depth, blind features, and masking scope before confirming TaC feasibility.

Product Gallery

TaC coated graphite susceptor for advanced wide-bandgap crystal growth 2

TaC coated graphite susceptor for advanced wide-bandgap crystal growth 3

TaC coated graphite susceptor for advanced wide-bandgap crystal growth 4

TaC coated graphite susceptor for advanced wide-bandgap crystal growth 5

Buyer FAQ

Are TaC coated susceptors standard catalog parts?

Most TaC coated susceptors are drawing-based custom parts because seed geometry, reactor layout, and vapor exposure differ by process.

What makes TaC coating different from SiC coating?

TaC coating is selected for more extreme high-temperature and vapor-corrosion environments, especially SiC PVT and AlN growth zones where SiC coating lifetime may be limited.

What information is required before quoting TaC coated parts?

Send drawings, marked coated surfaces, process temperature, atmosphere, vapor exposure, current failure mode, purity limits, and expected replacement cycle.

Can TaC coated graphite parts be made as direct replacements?

Yes, but coating allowance, masked interfaces, edge radii, and post-coating dimensions must be reviewed so the replacement still fits the furnace assembly.

Related Resources

Procurement Next Steps

Compare the full product portfolio before locking material architecture.
Match the part to a process solution for thermal-field and contamination constraints.
Review OEM capability controls for machining, coating, purification, and export packaging.
Send a drawing-based RFQ with process, material grade, tolerances, quantity, and delivery target.

Inquiry Email

[email protected]

Email app

Include process, product type, drawing status, purity/coating target, dimensions, quantity forecast, operating conditions, and delivery date.

Instant Chat

+8618857971991

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