- Home
- /
- Applications
- /
- Semiconductor Quartz Glass
- /
- High Purity Fused Quartz...
High Purity Fused Quartz Czochralski Crucible for Monocrystalline Silicon Growth -TOQUARTZ®
Technical Features of Fused Quartz Czochralski Crucible
TOQUARTZ® Fused Quartz Czochralski Crucibles are manufactured using the electric arc method, ensuring exceptional purity and performance characteristics essential for monocrystalline silicon production. These specialized crucibles deliver consistent results across multiple crystal pulling cycles.
Thermal Stability
Withstands temperatures up to 1600°C with excellent thermal shock resistance, maintaining structural integrity throughout the silicon melting and crystal pulling process.
High Purity Composition
99.99% SiO2 purity with controlled trace elements, minimizing contamination risk during silicon crystal growth.
Chemical Resistance
Highly resistant to corrosion from molten silicon, fluorine gases, and other aggressive environments common in crystal growing applications.
Consistent Wall Thickness
Uniform thermal distribution prevents temperature gradients that could affect crystal quality.
- Excellent Thermal Stability
- High Purity Composition
- Consistent Wall Thickness
Dimensions & Technical Specifications of Fused Quartz Czochralski Crucible
Size of of Fused Quartz Czochralski Crucible
| Model | Size (inch) | OD (mm) | Height – H(mm) | Thickness – T(mm) | Standard Radius – R(mm) | Standard Radius – r(mm) | Gap(mm) | SiO2 Purity (%) | ||
| W1 | W2 | W3 | ||||||||
| AT-SY-GG1001 | 14 | 355.6(±2.0) | Can be customized | 8.5(±2.0) | 10.5(±2.0) | 8.5(±2.0) | 381 | 89 | ≤5 | 99.99 |
| AT-SY-GG1002 | 16 | 406.5(±2.5) | 9.0(±2.0) | 11.0(±2.0) | 9.0(±2.0) | 406 | 76 | 99.99 | ||
| AT-SY-GG1003 | 18 | 457.0(±2.5) | 9.5(±2.0) | 11.5(±2.0) | 9.5(±2.0) | 500 | 120 | 99.99 | ||
| AT-SY-GG1004 | 20 | 505.0(±3.0) | 10.0(±2.0) | 11.0(±2.0) | 10.0(±2.0) | 508 | 90 | 99.99 | ||
| AT-SY-GG1005 | 22 | 555.0(±3.0) | 11.0(±2.0) | 12.0(±2.0) | 11.0(±2.0) | 558 | 130 | 99.99 | ||
| AT-SY-GG1006 | 24 | 607.0(±3.0) | 12.0(±2.0) | 13.0(±2.0) | 12.0(±2.0) | 609 | 120 | 99.99 | ||
| AT-SY-GG1007 | 25 | 632.0(±3.0) | 11.0(±2.0) | 11.0(±2.0) | 14.0(±2.0) | 635 | 120 | 99.99 | ||
| AT-SY-GG1008 | 26 | 655.0(±3.0) | 12.0(±2.5) | 14.5(±2.5) | 12.0(±2.5) | 669 | 120 | 99.99 | ||
| AT-SY-GG1009 | 28 | 710.0(±3.0) | 12.0(±2.5) | 16.0(±2.5) | 12.0(±2.5) | 710 | 120 | 99.99 | ||
| AT-SY-GG1010 | 30 | 758.0(±3.0) | 13.5(±2.0) | 13.5(±2.0) | 19.0(±3.0) | 760 | 120 | 99.99 | ||
| AT-SY-GG1011 | 32 | 810.0(±3.0) | 14.0(±2.5) | 23.0(±2.5) | 14.0(±2.5) | 810 | 160 | 99.99 | ||
| AT-SY-GG1012 | 36 | 912.0(±3.0) | 18.0(±2.5) | 26.0(±2.5) | 18.0(±2.5) | 910 | 180 | 99.99 | ||
| AT-SY-GG1013 | 40 | 1016.0(±3.0) | 20.0(±3.0) | 30.0(±3.0) | 20.0(±3.0) | 1016 | 186 | 99.99 | ||
Technical Specifications of Fused Quartz Czochralski Crucible
Physical Properties | |
| Density | 2.21 g/cm2 |
| Mohs Hardness | 6.5 |
| Compressive Strength | 1100 MPa |
| Tensile Strength | 50 MPa |
| Bending Strength | 67 MPa |
Thermal Properties | |||
| Property | 100°C | 500°C | 1100°C |
| Thermal Expansion (10⁻⁷/°C) | 5.11 | 5.65 | 5.48 |
| Thermal Conductivity W/(m*°C) | 1.47 | 1.84 | 2.68 |
| Specific Heat J/(Kg*°C) | 772 | 1052 | — |
Purity Specifications
| Fe | Mg | Mn | K | Li | Co | Ni | Cu | Na | B | Ti | Ca | Ai |
| 1.2 | 0.4 | 0.1 | 2 | 0.5 | ＜0.02 | 0.03 | 0.57 | 2.3 | 0.8 | 0.1 | 0.8 | 16 |
Overcoming Critical Challenges in Monocrystalline Silicon Production
Fused Quartz Czochralski Crucibles for Solar Grade Silicon Production
Key Advantages
- Maintains wall deformation <0.3mm after 6-hour exposure at 1600°C in CZ furnaces.
- Average bubble density <0.5/cm³ ensures minimal melt contamination during long pulling cycles.
- CTE deviation <2% across batches ensures predictable thermal behavior in automated CZ systems.
- Electric arc fusion process achieves >98% uniformity in wall thickness distribution (measured by ultrasonic scan).
TOQUARTZ® solution
A Polish solar ingot manufacturer reported inconsistent crystal diameters due to crucible wall deformation during long CZ cycles.
TOQUARTZ® supplied arc-fused crucibles with verified <0.3mm deformation at 1600°C, stabilizing their pulling process and reducing ingot rejection rate by 12%.
Fused Quartz Czochralski Crucibles for Research & Development Applications
Key Advantages
- Custom Dimension Flexibility: Accommodates non-standard sizes for specialized research equipment.
- Small Batch Capability: No minimum order requirements for research quantities.
- Technical Consultation: Engineering support for specialized application requirements.
- Rapid Prototyping: Fast delivery of sample crucibles for proof-of-concept testing.
TOQUARTZ® solution
Research laboratories at a major US university faced an 18% rejection rate with previously sourced crucibles that couldn't maintain the required ±0.2mm tolerance, disrupting critical material studies.
TOQUARTZ® addressed this challenge by providing custom-designed crucibles with consistent dimensional accuracy and offering technical guidance on optimal crucible specifications for specific research parameters.
Fused Quartz Czochralski Crucibles for Crystal Growing Equipment Manufacturers
Key Advantages
- OD tolerance maintained within ±0.2mm across 50+ units ensures plug-and-play compatibility with CZ furnace modules.
- Standard R/r radius deviation <1.5mm enables seamless seating in graphite susceptor assemblies.
- Gap (crucible-to-heater) adjustable to ±0.5mm per drawing, supporting precise thermal modeling.
- Thermal conductivity variation <3% across production lots ensures stable heat transfer in simulation-based furnace designs.
TOQUARTZ® solution
A Japanese CZ furnace OEM faced misalignment issues due to inconsistent crucible bottom radius.
TOQUARTZ® delivered crucibles with R/r deviation <1.5mm, eliminating the need for furnace baseplate re-machining and reducing assembly time by 22%.
Customization Services for TOQUARTZ® Fused Quartz Czochralski Crucible
Custom Engineering Capabilities
Dimensional Customization
Modify outer diameter, inner diameter, height, wall thickness, and bottom radius to match your exact specifications.
Specialized Wall Profiles
Custom variations in wall thickness from top to bottom to optimize thermal distribution.
Surface Treatment Options
Specialized interior and exterior finishes including fire polishing, mechanical polishing, or textured surfaces.
Material Composition Adjustments
Fine-tuning of SiO2 content and trace elements for specific applications within available purity range.
Technical Drawing Support
Assistance with specification development and drawing refinement.
Customization Process
Submit Technical Requirements
Clients initiate the process by submitting detailed technical drawings, dimensional specifications, or application descriptions. Our engineering team reviews the input to assess feasibility and identify any critical design constraints.
Engineering Evaluation & Feedback
Within 48 hours, TOQUARTZ® engineers provide feedback on manufacturability, tolerance limits, and material compatibility. If needed, we propose optimized design adjustments to improve thermal or structural performance.
Specification Confirmation
After mutual agreement on the technical parameters, we finalize the product specification sheet. This includes dimensional drawings, material grade, surface finish, and any special handling or packaging requirements.
Quotation & Lead Time Proposal
A formal quotation is issued based on confirmed specifications, including unit pricing, tooling costs (if applicable), and estimated lead time. For repeat orders, we offer batch pricing and delivery scheduling options.
Sample Production & Validation
We produce 1–3 sample crucibles for dimensional and performance validation. Clients may conduct thermal cycling or melt tests to confirm suitability before proceeding to mass production.
Batch Manufacturing & Delivery
Upon sample approval, full-scale production begins under strict process control. Finished crucibles are inspected, packaged per client requirements, and shipped with traceable documentation and optional material certificates.
Required Information for Custom Orders
Dimensional Specifications or Drawings
Please provide detailed 2D or 3D drawings with labeled dimensions including OD, ID, height, wall thickness, and bottom radius. If drawings are unavailable, a complete dimensional table with tolerance expectations is acceptable.
Application Context & Crystal Type
Describe the intended application (e.g., monocrystalline silicon, sapphire, GaAs) and crystal pulling method (e.g., CZ, FZ). This helps us recommend suitable material grades and surface treatments for optimal performance.
Operating Conditions
Indicate the maximum operating temperature, thermal cycling frequency, and expected duration of each growth cycle. If applicable, include atmosphere type (argon, vacuum, etc.) and any chemical exposure risks.
Equipment Interface Requirements
Specify how the crucible interfaces with your furnace system, including susceptor fit, gap tolerances, and mounting constraints. If the crucible must integrate with automated loading systems, please highlight those requirements.
Quantity & Delivery Timeline
State the number of samples and production units required, along with your desired delivery schedule. For urgent projects, we offer expedited sampling and batch production options with prioritized scheduling.
Quality & Documentation Expectations
Let us know if you require specific documentation such as material traceability, impurity analysis, or dimensional inspection reports. We can also provide RoHS declarations or REACH compliance upon request.
Usage Guidelines for Fused Quartz Czochralski Crucible
Pre-Installation Inspection
- Carefully examine crucible for chips, cracks, or surface defects before use
- Verify dimensional specifications match equipment requirements
- Clean with ultrapure isopropyl alcohol if necessary, using powder-free gloves
Installation Procedures
- Handle crucible only with clean, powder-free gloves to prevent contamination
- Ensure support structures are properly aligned and free of debris
- Apply even pressure during installation to prevent stress concentration
- Verify proper clearance between crucible and heating elements
Temperature Management
- Follow recommended heating and cooling rates (typically 50-100°C/hour) to prevent thermal shock
- Maintain consistent temperature distribution during operation
- Allow gradual cooling after use to extend crucible lifespan
Storage Recommendations
- Store in clean, dry environment away from potential contaminants
- Use original packaging or lint-free materials for storage
- Maintain consistent climate conditions to prevent moisture absorption
- Label with usage history for tracking service life
Maintenance and Cleaning
- Remove silicon residue using appropriate chemical processes
- Avoid mechanical scraping that could damage surface integrity
- Perform regular inspection for microscopic cracks before reuse
- Document usage cycles to predict replacement timing
Important Note
Thermal shock is the primary cause of premature crucible failure. Always follow recommended temperature ramp rates and avoid sudden temperature changes. Research by the International Crystal Growth Association shows that controlled heating/cooling extends crucible life by up to 40%.
Ready to Optimize Your Silicon Crystal Production?
Our engineering team is ready to provide expert guidance and custom solutions.
Why Partner with TOQUARTZ
Direct Factory Advantage
As a direct manufacturer, we can cut out the numerous intermediate links.
Engineering Expertise
Technical team guides clients from material selection to design optimization, translating specs into deliverables.
Flexible Manufacturing
Handling standard & custom orders via small-batch expertise and prototyping rigor to meet urgent deadlines.
Quality
Assurance
Pre-shipment 3-step validation:
1. dimensional accuracy,
2. material purity ,
3. performance thresholds
Global Supply Chain
Reliable global logistics to industrial hubs (DE/US/JP/KR priority) with trackable milestones.
Releted Products
As a specialized manufacturer with direct factory capabilities, TOQUARTZ provides both standard and custom quartz solutions with engineering support throughout the specification and implementation process.
FAQ
Q: What is the maximum operating temperature for TOQUARTZ® Fused Quartz Czochralski Crucibles?
A: TOQUARTZ® Fused Quartz Czochralski Crucibles can withstand temperatures up to 1600°C, making them suitable for silicon melting applications.
Q: How many crystal growing cycles can a TOQUARTZ® crucible typically withstand?
A: This varies based on operating conditions, but our crucibles typically support multiple crystal pulling cycles when operated within recommended parameters.
Q: What packaging is used to protect crucibles during shipping?
A: Crucibles are individually wrapped in lint-free materials, secured in custom-fitted foam inserts, and shipped in reinforced containers to prevent damage.
Q: How should I specify my crucible requirements when ordering?
A: Provide dimensions (inner/outer diameter, height, wall thickness), quantity, application details, and any special requirements such as surface finish or composition needs.
Q: Do you offer rush manufacturing options for urgent requirements?
A:Yes, we offer expedited manufacturing for critical timeline requirements, with rush options typically reducing lead times by 30-50%.
Contact our engineering team for technical consultation and pricing. We’ll help you select the optimal specifications for your application requirements.
English 
Русский 
العربية 
Deutsch 
Español 
한국어 
Français 
Português do Brasil 
Türkçe