CVD TaC and CVD-SiC coating support for graphite crucibles, liners, susceptors, wafer carriers, and hot-zone parts requiring stronger chemical isolation or particle control.
| Program Metric | Typical Range | Procurement Value |
|---|---|---|
| Coating Selection | TaC or CVD-SiC by process chemistry | TaC and SiC coatings solve different high-temperature, corrosion, and contamination problems. |
| Coating Thickness | Defined by RFQ, geometry, and inspection plan | Thickness affects coverage, thermal stress, feature fit, cleaning durability, and cost. |
| Surface Map Completeness | Coated, uncoated, masked, and mating zones marked | A clear surface map prevents exposed graphite, coating on functional fits, and quote ambiguity. |
Decision fit
PVT, epitaxy, and semiconductor equipment engineers qualifying coated graphite parts by drawing.
Primary proof point
TaC or CVD-SiC by process chemistry
TaC and SiC coatings solve different high-temperature, corrosion, and contamination problems.
RFQ trigger
| Decision Gate | What Buyers Should Check | Acceptance Evidence |
|---|---|---|
| Use-case fit | TaC coated graphite crucibles and liners for SiC PVT growth; CVD-SiC coated graphite susceptors and wafer carriers for epitaxy; Coated graphite hot-zone parts exposed to corrosive or contamination-sensitive environments | Application, furnace duty, and buyer-side validation goal are confirmed before material or process route selection. |
| Parameter baseline | Coating Selection: TaC or CVD-SiC by process chemistry; Coating Thickness: Defined by RFQ, geometry, and inspection plan; Surface Map Completeness: Coated, uncoated, masked, and mating zones marked | Target ranges, report needs, and pass/fail criteria are written into the RFQ or sample approval plan. |
| Risk closure | Microcracks or delamination: Review base graphite grade, surface preparation, coating thickness, thermal cycling, and ramp assumptions before sample approval.; Coating on mating or tolerance-critical faces: Mark masked surfaces, contact faces, bores, threads, and inspection dimensions directly on the drawing. | Drawing notes, inspection scope, cleaning, coating, packaging, and traceability controls are agreed before repeat supply. |
| RFQ completeness | Part drawing with coated, uncoated, masked, and mating surfaces marked; Base graphite grade, density, ash target, and pre-coating purification need; Coating material, target thickness range, and critical coverage areas; Operating temperature, atmosphere, gases, cleaning method, and cycle length | Engineering can return a quote direction without avoidable loops for drawing, purity, coating, quantity, or delivery gaps. |
Collect CAD, drawings, specifications, target reports, and NDA expectations before engineering review starts.
Check machinability, material grade, purity path, coating feasibility, tolerance stack-up, and packaging risk.
Prepare sample scope with dimensional evidence, material records, cleaning notes, and acceptance criteria.
Lock revision control, batch traceability, inspection cadence, export documents, and delivery plan for repeat orders.
See the product-side machining scope for semiconductor graphite components.
Connect OEM execution to complete furnace hot-zone component programs.
Send drawings, purity targets, forecast quantities, destination, and delivery timeline.
Open the related page to continue technical qualification.
Open the related page to continue technical qualification.
Inquiry Email
Attach DWG, STEP, or PDF drawings and include purity, tolerance, quantity forecast, and delivery country.
Instant Chat
+8618857971991
Use WhatsApp for quick engineering clarification before a formal quote.
Porous graphite can be reviewed for conformal coating, but porosity, permeability, particle limits, and coating thickness must be aligned before quoting.
Yes. Coated, uncoated, masked, and mating surfaces should be marked to avoid coverage gaps or coating on functional interfaces.
Yes. Many coated graphite programs route through machining, purification, surface preparation, CVD coating, cleaning, inspection, and packaging.
