Pyrolytic Boron Nitride VGF Crucible | PBN crucible
Pyrolytic Boron Nitride Crucible from QSAM is a CVD-grown, high-purity PBN vessel for vertical gradient freeze crystal growth and high-vacuum thermal processes. With typical purity above 99.99%, the crucible supports clean material containment and can be machined to project-specific dimensions, profiles, and handling requirements. Submit your target size, crystal material, wall-thickness requirement, and quantity for a technical review.
- Material: pyrolytic boron nitride (PBN)
- Manufacturing process: chemical vapor deposition (CVD)
- Typical purity: >99.99%
- Designed for VGF crystal growth and vacuum thermal processing
- Custom dimensions and machined profiles available on review
Catalog No.: PBN-vgf-crucible
- Product Details
Pyrolytic Boron Nitride Crucible for VGF Crystal Growth Systems
Pyrolytic Boron Nitride Crucible is a high-purity ceramic vessel manufactured by chemical vapor deposition for vertical gradient freeze crystal growth. The CVD process forms a dense PBN body with boron nitride crystal layers aligned substantially parallel to the deposition surface. This structure gives pyrolytic boron nitride direction-dependent thermal conductivity and makes it suitable for carefully controlled crystal-growth and high-vacuum thermal applications.
High-Purity CVD Material for Controlled Processes
VGF crystal-growth processes require a crucible material that supports clean containment and stable performance under demanding thermal conditions. Unlike conventional powder-based boron nitride products, pyrolytic boron nitride is deposited from gaseous precursors during CVD manufacturing. The typical purity of the PBN material is greater than 99.99%.
- High-purity PBN material with a typical purity above 99.99%
- CVD-grown structure for applications requiring clean ceramic process components
- Layered crystal orientation that contributes to anisotropic thermal conductivity
- Suitable for VGF crystal-growth equipment and high-vacuum thermal systems
- Applicable for process environments involving molten metals or salts, subject to compatibility review
Why PBN Is Used in VGF Crystal Growth
Vertical gradient freeze is a crystal-growth method that uses a controlled temperature gradient to directionally solidify material. The crucible holds the process charge and must fit the furnace configuration, thermal profile, and required crystal dimensions. A PBN VGF crucible is therefore selected not only by size, but also by wall thickness, geometry, material purity, and handling requirements.
The layered structure formed during CVD manufacturing creates thermal behavior that varies by direction. For VGF applications, this characteristic should be considered together with crucible orientation, furnace heating arrangement, process temperature, and the material being grown. QSAM can review the requested dimensions and application information before machining a project-specific PBN component.
Product Specifications
| Product name | Pyrolytic Boron Nitride VGF Crucible |
| Material | Pyrolytic boron nitride (PBN) |
| Production process | Chemical vapor deposition (CVD) |
| Typical purity | >99.99% |
| Catalog No. | PBN-vgf-crucible |
| Primary application | Vertical gradient freeze crystal growth |
| Available documentation | Chemical-content and physical-properties documentation |
| Wall-thickness note | Due to CVD manufacturing characteristics, wall thicknesses above 3 mm are generally not available |
Technical Factors Before Procurement
For a reliable technical review, buyers should evaluate the crucible as part of the complete VGF process rather than as an isolated ceramic part. The following information helps confirm whether the requested geometry can be machined from available PBN material and whether it fits the intended process conditions.
- Inner diameter, outer diameter, overall height, and bottom configuration
- Required wall thickness and dimensional tolerance
- Crystal-growth material or process charge
- Operating temperature range and vacuum conditions
- Furnace space, heater arrangement, and intended crucible orientation
- Required quantity, drawing, and need for material documentation
Custom Machining Options
QSAM supplies custom-produced advanced inorganic materials for research institutions and advanced industries. For PBN crucible projects, QSAM can review the required geometry and machine the component from available CVD-grown PBN material. The final design should consider raw-material dimensions, wall thickness, machining limitations, and the application-specific handling requirements.
- Custom inner diameter and outer diameter
- Custom overall height and bottom profile
- Rims, lips, grooves, edge treatments, and special machined features
- Matched PBN discs, sheets, rings, and other machined PBN components
- Dimensional assessment based on the VGF furnace and crystal-growth setup
Available PBN raw material is commonly based on 1 mm, 2 mm, or 3 mm thick PBN discs with diameters of approximately 10 to 14 inches. Feasible finished-part dimensions depend on the selected raw material, requested profile, required thickness, and machining geometry.
Applications and Typical Buyers
This PBN VGF crucible is intended for professional buyers who require high-purity ceramic containment components for research, material development, vacuum processing, and industrial crystal-growth projects.
- Research laboratories working on crystal-growth processes
- Semiconductor and compound-crystal material manufacturers
- Universities and research institutes sourcing advanced ceramics
- Vacuum furnace integrators and thermal-equipment manufacturers
- Materials engineering teams requiring custom PBN process components
Material Documentation and Technical Support
QSAM works with research agencies, qualified manufacturers, and third-party laboratories to support its quality-control process for advanced materials. Depending on the material and project requirement, accessible analytical support may include ICP-OES, GDMS, XRD, and regular physical-performance testing.
For this PBN crucible, chemical-content and physical-properties documents are available for buyers who need product information as part of supplier qualification, research evaluation, or process-development review. QSAM can also provide technical product information to help purchasers assess material properties and application suitability before procurement.
Typical Project Example
A research-oriented crystal-growth buyer required a high-purity ceramic crucible for a VGF evaluation process. The requested component needed to fit an existing vacuum furnace arrangement while accommodating a defined charge volume and a practical wall thickness for handling during installation.
Buyer Requirement: The buyer supplied the target inner diameter, outer diameter, height, intended crystal-growth material, and expected operating conditions. The objective was to assess whether a custom PBN configuration could meet the furnace-space limitation and support a low-contamination process environment.
Solution: QSAM reviewed the requested geometry against available CVD PBN raw material and the wall-thickness limitations associated with the deposition process. The proposed configuration focused on crucible dimensions, bottom geometry, material purity information, and compatibility with the buyer’s VGF setup.
Result: The buyer received a defined PBN crucible configuration for technical evaluation prior to purchasing. This allowed the project team to compare the requested dimensions and material documentation with its process requirements before proceeding with the next procurement stage.
Related PBN Products
- PBN discs, sheets, and rings
- Custom-machined PBN parts
- Other PBN crucible options: LEC crucibles, conical crucibles, and MBE crucibles
VGF PBN Crucible Packaging
Pyrolytic boron nitride is a ceramic material that requires careful handling during packing and transportation. QSAM normally vacuum-packs VGF crucibles in plastic bags and uses heavy foam protection before placing the products in an outer carton. Final packing arrangements can be reviewed when the product dimensions and shipment quantity are confirmed.
FAQ
What is a pyrolytic boron nitride crucible?
A pyrolytic boron nitride crucible is a high-purity ceramic vessel produced by chemical vapor deposition. It is used where clean material contact and controlled thermal performance are important, including VGF crystal growth and high-vacuum thermal processing.
What is the typical purity of the PBN material?
The typical purity is greater than 99.99%. QSAM provides chemical-content documentation and physical-properties information for buyers who need supporting product data for technical evaluation.
Is this crucible designed for VGF crystal growth?
Yes. This product is a PBN VGF crucible intended for vertical gradient freeze applications. Final suitability should be confirmed using the crystal material, target dimensions, furnace arrangement, temperature profile, and vacuum conditions.
Can QSAM produce custom PBN crucible dimensions?
QSAM can review custom dimensions and machine PBN crucibles according to the required inner diameter, outer diameter, height, bottom shape, rim detail, and wall thickness. A dimensioned drawing or sketch helps support a feasibility review.
Why is wall thickness important when purchasing a CVD PBN crucible?
Wall thickness affects machining feasibility, mechanical handling, furnace fit, and thermal behavior. Because PBN is manufactured through CVD, products with wall thicknesses above 3 mm are generally not available. The required thickness should be evaluated against the actual process conditions.
What information should be submitted for pricing?
Please provide the target quantity, required dimensions, wall thickness, bottom geometry, crystal-growth material, operating conditions, drawing if available, and whether chemical-content or physical-properties documentation is required.
About QS Advanced Materials Inc
QS Advanced Materials Inc was established by science and engineering professionals with experience in laboratory and industrial environments, including chemical engineering and environmental engineering. QSAM supplies advanced inorganic materials to research institutions and advanced industries working in research, development, deposition, thermal processing, and materials engineering.
QSAM’s product range includes deposition materials, sputtering targets, evaporation materials, advanced ceramics, high-purity materials, and minor refractory metals. For PBN VGF crucible projects, QSAM combines product information, dimensional review, material documentation, and application-focused technical support to help buyers select a configuration that matches their process requirements.
Request PBN Crucible Specifications and Pricing
To support an accurate quotation, please prepare the required quantity, inner diameter, outer diameter, height, wall thickness, bottom geometry, crystal-growth material, and operating conditions. A dimensioned drawing or sketch is helpful for custom-machining assessment. Please also indicate whether material documentation, physical-properties information, special packing, or an evaluation sample is required.
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