Characteristics and advantages of customized corundum tube furnace

Characteristics and advantages of customized corundum tube furnace

1. Core Features
High temperature resistance and chemical stability
Material advantage: Corundum tube (alumina ceramic tube) has a high melting point (about 2050 ℃) and can maintain structural stability at high temperatures of 1600-1700 ℃, making it less prone to deformation or cracking. It has strong chemical inertness and can resist the corrosion of metal elements such as lithium, cobalt, nickel, etc., avoiding the introduction of impurities and ensuring the purity of the material.
Extreme environment adaptation: Supports long-term high-temperature operation (such as continuous operation at 1600 ℃), meeting the sintering needs of high melting point materials such as special ceramics, metal alloys, carbides, etc.
Independent control of multiple temperature zones
Flexible process design: Through dual temperature zone, triple temperature zone or multi temperature zone design, the temperature of each zone can be independently adjusted (such as low-temperature zone decomposing precursor, high-temperature zone promoting reaction), simulating the complex temperature environment of materials in actual production.
Gradient temperature control: supports programmed heating and cooling, controls material phase transition process, optimizes grain size and distribution (such as in the preparation of fuel cell catalysts, optimizing platinum nanoparticle particle size through gradient temperature control).
Intelligent Atmosphere Control System
Multi gas support: nitrogen, argon, hydrogen, oxygen and other gases can be introduced to meet the requirements of inert protection, reduction, oxidation and other processes. For example, the carbonization of negative electrode materials in lithium-ion batteries requires inert gas protection, while the reduction of fuel cell catalysts requires a hydrogen atmosphere.
High precision regulation: equipped with a mass flow meter (MFC) to accurately control gas flow rate, pressure, and purity, ensuring experimental repeatability (such as in the annealing of perovskite solar cell thin films, oxygen flow control affects the photoelectric conversion efficiency).
Tiltable and rotatable design
Convenience of operation: Some furnace bodies support tilting or rotating functions, making it easy to load and unload long or irregular samples (such as silicon carbon composite materials), while improving heating uniformity through rotation and reducing the risk of cracking caused by thermal stress.

2. Core advantages
High precision temperature control and uniform heating
Temperature control accuracy: Adopting PID intelligent temperature control system, combined with high-precision thermocouple, temperature fluctuation is controlled within ± 1 ℃, meeting the strict requirements of lithium-ion battery materials for calcination temperature (such as 750 ℃± 5 ℃ for lithium iron phosphate).
Uniformity optimization: Corundum tube has excellent thermal conductivity (thermal conductivity of about 30W/(m · K)), combined with reasonable furnace design, temperature uniformity is ≤± 5 ℃, avoiding performance differences caused by local overheating or underheating of the material.
Pure experimental environment
Vacuum and atmosphere protection: Supports vacuum environment (maximum vacuum degree ≤ 10 ⁻ ³ Pa) and inert gas protection to prevent material oxidation or contamination. For example, when fuel cell catalysts are reduced in a hydrogen atmosphere, a vacuum environment can avoid oxygen interference and enhance catalytic activity.
Sealing performance: Adopting stainless steel flange sealing and double-layer water cooling structure, effectively maintaining the stable atmosphere inside the furnace and reducing the risk of gas leakage.
Energy saving and safety
Efficient insulation: Lightweight insulation materials such as ceramic fibers and alumina hollow spheres are used to reduce heat loss. The energy consumption of a 1600 ℃ tube furnace can be controlled within 10-15 kW · h/kg, which is 20% -30% lower than traditional furnace types.
Multiple safety protections: equipped with functions such as over temperature alarm, break protection, leakage protection, overvoltage protection, etc., to ensure the safe operation of equipment in high temperature, high pressure, flammable and explosive gas environments.
Customization and compatibility
Customization of size and shape: Customize the furnace tube diameter (Φ 20- Φ 200mm) and length (300-1200mm) according to the material size (such as film, powder, block), and optimize the thermal field distribution. For example, when preparing long strip perovskite thin films, using a long furnace tube can achieve continuous annealing and improve production efficiency.
Compatibility: Supports integration with glove boxes, gas chromatographs, X-ray diffractometers, and other equipment to achieve an integrated process of material preparation characterization. For example, in the development of lithium-ion battery materials, a tube furnace can be integrated with a glove box to avoid material contact with air and moisture during transfer.

3. Application scenarios
Lithium ion battery materials: calcination and carbonization of positive and negative electrode materials (such as lithium cobalt oxide, lithium iron phosphate, graphite) to ensure material purity and performance stability.
Fuel cell catalysts: Reduction and oxidation treatment of platinum/carbon and platinum alloy catalysts to optimize catalytic activity and durability.
Solar cell materials: Annealing and crystallization control of perovskite thin films to improve photoelectric conversion efficiency.
Hydrogen energy materials: synthesis and activation of hydrogen storage alloys to promote hydrogen adsorption and desorption under high-pressure hydrogen atmosphere.