Molybdenum Crucible Cover / Heat Shield for Sapphire Crystal Growth Furnace

The molybdenum crucible cover, also known as a horizontal molybdenum heat shield, is a critical thermal field component used in sapphire crystal growth furnaces and single crystal furnaces.

Installed above the crucible, this molybdenum heat shield cover plays a key role in temperature field regulation, thermal insulation, and process stability during sapphire crystal growth.

Core Functions

1. Heat Field Control

By reflecting high-temperature thermal radiation, the molybdenum heat shield helps optimize the temperature distribution inside the furnace, ensuring a more uniform and stable temperature at the crystal growth interface. This contributes to improved crystal quality and reduced thermal stress.

2. Thermal Insulation & Protection

As a key insulation component of the heat field system, the molybdenum cover effectively reduces heat loss and improves heating efficiency. At the same time, it helps suppress contamination of the seed crystal caused by volatile materials at high temperatures.

3. Structural Compatibility

The central opening and peripheral mounting holes are precisely designed to match the crucible and supporting structures of the crystal growth furnace, ensuring mechanical stability and accurate positioning under extreme high-temperature conditions.

Material & Design

• Material: High-purity molybdenum (Mo ≥ 99.95%)

• Structure: Plate-type / horizontal heat shield design

• Operating environment: High vacuum or controlled atmosphere

• Processing: Precision cutting, forming, and machining

• Design: Customized based on furnace model and heat field requirements

Typical Applications

• Sapphire single crystal growth furnaces

• Kyropoulos (KY) crystal growth furnaces

• Czochralski (CZ) single crystal furnaces

• High-temperature crystal growth heat field systems

Why Choose Our Molybdenum Heat Shield Covers

• Stable performance at ultra-high temperatures

• Excellent thermal reflectivity and low vapor pressure

• Proven experience in sapphire furnace molybdenum components

• Custom engineering support based on drawings or furnace parameters

Inquiry & Customization

Please provide your furnace type, operating temperature, dimensions, and drawings. Our team will support you with a tailored molybdenum heat shield solution for your crystal growth process.