Coraynic supplies tungsten and molybdenum crucibles for sapphire crystal growth furnaces and other high-temperature vacuum processing applications. These refractory metal crucibles are designed for demanding thermal environments where high-temperature stability, low vapor pressure, dimensional control and material purity are important.
Tungsten and molybdenum can be selected according to furnace configuration, crystal growth process, operating temperature and service requirements. Crucibles can be manufactured in customized diameters, heights, wall thicknesses, base thicknesses and other geometries based on customer drawings or technical specifications.
In addition to crucibles, Coraynic can support related refractory metal furnace components, including heaters, heat shields and other customized tungsten and molybdenum parts for sapphire crystal growth systems.
Tungsten and molybdenum crucibles are important components in sapphire crystal growth furnaces. Sapphire produced using crystal growth processes is used in a range of optical, electronic and industrial applications, including:
The Kyropoulos method is widely used for producing large-diameter sapphire single crystals. Tungsten crucibles are commonly selected for suitable KY growth furnace configurations because of their high-temperature stability and mechanical strength.
The Heat Exchanger Method is another established approach for sapphire crystal growth. Molybdenum crucibles are used in suitable HEM furnace configurations based on their thermal and mechanical characteristics at elevated temperatures.
The appropriate crucible material depends on the furnace configuration, growth process, operating conditions and crucible design.
Tungsten and molybdenum are both refractory metals suitable for demanding high-temperature applications. The selection between them should be based on the specific furnace and crystal growth requirements rather than material alone.
| Characteristic | Tungsten | Molybdenum |
|---|---|---|
| High-temperature capability | Very high | Very high |
| High-temperature strength | Excellent | Excellent |
| Thermal conductivity | High | High |
| Thermal expansion | Low | Low |
| Vacuum applications | Suitable | Suitable |
| Sapphire crystal growth | Commonly used | Commonly used |
| Material selection | Depends on furnace and process | Depends on furnace and process |
| Cost consideration | Typically higher material cost | Often considered where cost efficiency is important |
The appropriate material should be selected according to furnace design, growth temperature, vacuum conditions, crucible geometry, thermal cycling and expected service life.
Tungsten and molybdenum have exceptionally high melting points and maintain useful mechanical properties at elevated temperatures. This makes them suitable for prolonged high-temperature conditions encountered in sapphire crystal growth.
Their low vapor pressure at high temperatures can help minimize material evaporation and potential contamination within the furnace environment under appropriate operating conditions.
High-density refractory metal materials provide resistance to deformation under high-temperature operating conditions. Proper material selection and manufacturing control help maintain crucible geometry during repeated thermal cycles.
High-purity refractory metal materials can be supplied for applications where contamination control is important. Material purity can be specified according to customer requirements.
Coraynic provides customized crucibles according to furnace design and customer requirements.
| Parameter | Tungsten (W) Crucible | Molybdenum (Mo) Crucible |
|---|---|---|
| Typical Application | Sapphire growth, commonly KY configurations | Sapphire growth, commonly HEM configurations |
| Density | ≥18.3 g/cm³ | ≥9.90 g/cm³ |
| Maximum Diameter | Up to 600 mm | Up to 600 mm or customized |
| Purity | High purity, customizable | High purity, customizable |
| Manufacturing | Sintering, forging, machining | Sintering, forging, machining |
| Design | Customized according to drawing | Customized according to drawing |
Actual material grade, density, dimensions, wall thickness and manufacturing process can be customized according to furnace design and application requirements.
For large sapphire growth furnaces, material density, dimensional accuracy, wall thickness, surface condition and structural integrity are important factors affecting crucible performance and service life.
Sapphire crystal growth furnaces often require crucibles designed around a specific hot-zone configuration. Coraynic supports OEM and customized crucible production based on customer drawings, specifications, samples or furnace requirements.
Customization may include:
For a technical evaluation, customers can provide the crucible drawing, required material, purity, dimensions, furnace type, crystal growth method and operating conditions where available.
Tungsten and molybdenum crucibles require controlled material selection, forming or consolidation, machining and dimensional inspection.
Depending on the material grade, crucible size and production requirements, manufacturing may involve powder metallurgy, pressing or sintering, forging, precision machining and surface finishing.
Critical characteristics may include:
Quality control is carried out according to agreed technical specifications to help ensure reliable performance during demanding crystal growth processes.
For customers sourcing components for complete high-temperature furnace systems, Coraynic can also provide complementary refractory metal products, including:
This allows Coraynic to support customers not only with crucibles but also with complementary refractory metal components used in high-temperature vacuum furnace systems.
Coraynic supports OEM and customized orders based on technical drawings, samples, furnace specifications or application requirements.
MOQ: Negotiable according to product specifications and order quantity.
Lead Time: Confirmed after reviewing drawings, material requirements, production process and quantity.
Packaging: Protective export packaging and reinforced wooden cases are available for international transportation.
For customized crucibles, please provide the drawing, required material, purity, dimensions, furnace type and intended crystal growth process where available.
Looking for a refractory metal crucible for your sapphire crystal growth furnace?
Send us your drawing or technical specifications. Our team can review the requirements and recommend a suitable tungsten or molybdenum crucible solution based on your furnace configuration and application.
Contact Coraynic Technology Limited for a quotation and technical discussion.
A sapphire crystal growth crucible is a high-temperature refractory metal container used in sapphire crystal growth furnaces. Tungsten and molybdenum are used for demanding high-temperature and vacuum furnace environments where material stability and controlled crucible geometry are important.
Tungsten and molybdenum offer high-temperature stability, low vapor pressure and good resistance to deformation under appropriate operating conditions, making them suitable for demanding crystal growth furnace environments.
Both materials can be used for sapphire crystal growth, but the appropriate choice depends on the furnace configuration, growth process, operating conditions, crucible geometry and other technical requirements.
Yes. Crucible diameter, height, wall thickness, base configuration, internal geometry and other dimensions can be customized according to customer drawings or furnace specifications.
Yes. Coraynic supports OEM and customized production based on drawings, CAD files, samples or technical specifications.
Yes. Related products can include tungsten and molybdenum heaters, heating elements, heat shields, insulation components, furnace structural parts and other customized refractory metal components.
