This product is a horizontal flash sintering furnace, capable of reaching a maximum temperature of 1600°C. It is equipped with a 3 kW programmable AC power supply, and the positive and negative electrode wires can be introduced to the alumina sample holder through electrode flanges to apply an electric field to the samples, achieving an electric field-assisted flash sintering process. Compared to traditional ceramic sintering methods, it offers advantages such as ultra-fast processing, energy efficiency, and favorable conditions for preparing fine-grained ceramics. The horizontal flash sintering furnace can be widely applied in the flash sintering processes of various ceramic materials, including in the fields of solid oxide fuel cells, ferroelectric thermoelectric ceramics, and solid electrolytes.
Product Features:
1.High-Temperature Rapid Heating: The flash sintering furnace can quickly raise materials to extremely high temperatures (usually exceeding 1000°C) and sinter them rapidly, with heating rates reaching hundreds to thousands of degrees per minute, significantly reducing the time compared to traditional sintering processes.
2.Low Energy Consumption: With the sintering time greatly shortened, the energy consumption of the flash sintering furnace is relatively low. Direct heating through current allows energy to be used more efficiently in the sintering process.
3.Electric Field-Assisted Sintering: The furnace employs electric fields or current to assist in sintering. By applying an electric field to the samples, the ionic or electronic motion of the materials accelerates the sintering process, promoting densification and grain growth.
4.Wide Material Compatibility: The flash sintering furnace can handle various types of materials, including ceramics, metals, and composites, making it especially suitable for sintering materials that require high density and excellent performance.
5.Flexible Process Control: Parameters such as current, voltage, and sintering time can be adjusted to precisely control the sintering process, allowing for modifications to the final microstructure and properties of the materials.
6.Reduction of Impurities and Defects: The short sintering time reduces the exposure of materials to high temperatures, effectively minimizing the generation of impurities and defects, thus improving material purity and performance.
7.Compact Equipment Design: Flash sintering furnaces are typically designed to be compact and space-efficient, making them suitable for both laboratory and industrial applications.
Purchase information:
If you are interested in our flash sintering furnace, please contact us for more information and quotes.
Contact number: 156 3719 8390
Email: shirley@cysitech.com
Contact person: shirley
WeChat: 18736046549
Technical parameter:
Product Name | flash sintering furnace |
Product model | CY-O1600-Φ80-300-T-SSL |
Power Supply Voltage | AC220V, 50Hz |
Total Power | 6KW |
Working Temperature | ≤1600℃ |
Heating Rate | Recommended 10℃/min |
Heating Element | Silicon molybdenum rod |
Flash Burn Power Supply | 3kW AC power supply, programmable design |
Output Voltage | Adjustable 50-300V |
Output Frequency | 50Hz |
Voltage Stability | ≤1% |
Frequency Stability | ≤0.01% |
Thermocouple Type | K-type thermocouple |
Furnace Tube Parameters | Size: OD 80mm × ID 70mm × 1000mm L Material: High-purity alumina |
Temperature Zone Length | 300mm |
Furnace Tube Flange: | Left Flange: Stainless steel needle valve Right Flange: Open flange, includes KF16 electrode, vacuum interface, and mechanical vacuum gauge |
Temperature Control | 1) PID fully automatic control of heating rate, cooling rate, and holding time 2) PID control for over-temperature protection and short-circuit protection 3) Over-temperature protection with alarm function allows the equipment to operate unattended 4) Temperature accuracy within ±1℃ (the difference between displayed temperature and actual temperature) |
Water Cooling Unit | 10L/min circulating water cooling unit |
Main parts:
Name | Description |
Main machine | Flash sintering furnace |
DC Power System | Heating Energy Supply: The flash sintering furnace utilizes AC power to transfer electrical energy through the sample or sintering material, converting it into thermal energy to rapidly heat the material to the required high sintering temperature. The resistive heating effect generated when AC passes through the material accelerates the heating speed. Electric Field Assisted Sintering: In the flash sintering furnace, the AC power supply can provide an electric field or current to assist in sintering, which helps accelerate the movement of ions or charge conduction within the material, promoting the sintering reaction. The presence of the electric field effectively lowers the sintering temperature and shortens the sintering time. Uniform Heating: The AC power supply can adjust the current and frequency to provide stable and uniform heat distribution, ensuring consistent heating throughout the sintering process. This helps reduce local overheating or temperature inconsistencies during sintering, thereby improving material density and performance. Dynamic Control of the Sintering Process: By real-time adjustment of the voltage and current of the AC power supply, the temperature curve and heating rate of the flash sintering furnace can be precisely controlled, making the sintering process more flexible and adaptable to different material requirements. |
Water Cooling System | 1.Equipment Cooling: During the high-temperature rapid sintering process, the furnace body and its internal electrical components (such as electrodes and power modules) generate a significant amount of heat. The water cooling system removes this heat from critical components through circulating cooling water, preventing overheating and ensuring safe operation within temperature limits, thus extending the equipment's lifespan. 2.Maintaining a Stable Working Environment: In the flash sintering furnace, the sintering temperature is typically very high. The water cooling system helps control the temperature to prevent excessive heat on the equipment surface or surrounding environment, ensuring operational safety and maintaining the normal functioning of nearby equipment. 3.Improving Equipment Efficiency: The rapid heating and sintering process of the flash sintering furnace can lead to localized overheating or uneven temperatures. The cooling effect of the water cooling system effectively mitigates these overheating issues, ensuring the equipment operates stably and efficiently, reducing the likelihood of shutdowns or equipment failures due to overheating. 4.Protecting Key Components: Sensitive components, such as electrodes and vacuum seals, may age or fail more quickly if exposed to high temperatures for extended periods. The water cooling system helps lower the temperature of these components, slowing their aging process and reducing maintenance and replacement frequency. 5.Improving Process Control Precision: The water cooling system also helps maintain the stability of the temperature gradient inside the furnace. By precisely controlling the equipment temperature, it indirectly improves the control precision of material sintering, optimizing sintering results and reducing product defects. |
Random accessory | Related auxiliary tools, such as O-rings, flanges, various standard parts, and spare parts, ensure the normal operation and maintenance of the equipment. |
User manual | One piece |
Application fields:
1. Ceramic Materials:
2. Functional Ceramics:
High-Performance Ceramics: The flash sintering furnace is used for the rapid sintering of high-performance ceramic materials such as zirconia, alumina, and silicon nitride. Its capability for high-temperature rapid sintering can improve the density of ceramics and enhance their mechanical and electrical properties.
Structural Ceramics: When manufacturing high-strength structural ceramics (e.g., wear-resistant parts, cutting tools), the flash sintering furnace can significantly shorten sintering times and improve material strength and durability.
3. Electronic Materials:
Capacitors and Resistors: Used for the rapid sintering of ceramic substrates in electronic components, improving electrical performance and dimensional stability.
Semiconductor Materials: The flash sintering furnace can be used to sinter oxide semiconductors and optimize their performance in electronic devices.
4. Energy Materials:
Solid Oxide Fuel Cells (SOFC): The flash sintering furnace can rapidly sinter electrolyte and electrode materials in fuel cells, reducing production time and optimizing material conductivity and mechanical stability.
Lithium Battery Ceramic Materials: The furnace is also applied in the rapid preparation of separators and electrode materials for lithium batteries, enhancing their conductivity and stability.
5. Metallic Materials:
Powder Metallurgy: The flash sintering furnace can be used for the sintering of metal powder materials, shortening sintering times and increasing material density, making it suitable for the production of hard alloys and other high-strength metal materials.
Reduction of Metal Oxides: With electric field assistance, the flash sintering furnace effectively promotes the reduction reactions of metal oxides, finding wide applications in metallurgy.
6. Composite Materials:
Ceramic-Metal Composites: The flash sintering furnace is used to sinter composites of metals and ceramics, optimizing their conductivity, mechanical strength, and corrosion resistance, which is crucial in aerospace and defense industries.
7. 3D Printing and Additive Manufacturing Materials:
In the post-processing of sintering ceramic and metal materials from 3D printing, the flash sintering furnace can rapidly sinter printed materials, ensuring the uniformity of their microstructure and excellent mechanical properties.
8. New Material Development:
In laboratory research and the development of new materials, the rapid heating and sintering capabilities of the flash sintering furnace can shorten research and development cycles, enhance experimental efficiency, and are particularly suitable for the development of new ceramics, composites, and energy materials.
Application Case (Preparation of Ceramics)
The steps for preparing ceramic materials using a flash sintering furnace typically include the following main stages:
1.Preparation of Ceramic Powder:
Selecting Suitable Raw Materials: Choose appropriate ceramic powders based on the type of ceramic to be prepared (e.g., alumina, zirconia, silicon nitride).
Powder Treatment: Process the ceramic powders using methods such as ball milling, ultrasonic dispersion, or spray drying to achieve uniform particle size and good dispersion.
2.Forming:
Powder Mixing and Granulation: To enhance the flowability of the powder, mix the ceramic powder with an appropriate amount of binder, solvent, or plasticizer to create a granular material.
Pressing: Use methods such as dry pressing, isostatic pressing, injection molding, or tape casting to shape the ceramic powder into a green body. This process ensures that the ceramic body has sufficient density and mechanical strength for subsequent sintering.
3.Pre-sintering (Optional):
Pre-sintering the Green Body: Sometimes, a pre-sintering treatment (also known as debinding) is necessary to decompose or evaporate the organic binder or solvent from the green body through heating. This step helps prevent cracking or porosity during high-temperature sintering.
4.Sintering in the Flash Sintering Furnace:
Placing the Green Body: Position the formed ceramic green body in the sintering chamber of the flash sintering furnace, typically using high-temperature ceramic trays or electrodes to secure the sample.
Setting Sintering Parameters:
Temperature: Set an appropriate sintering temperature based on the ceramic material, usually between 1000°C and 1800°C.
Electric Field or Current: Since the flash sintering furnace uses electric field-assisted sintering, establish the suitable electric field strength or current, which directly acts on the ceramic body through electrodes.
Sintering Time: The rapid sintering time in the flash sintering furnace is shorter than traditional sintering, typically ranging from a few minutes to several tens of minutes.
Sintering Process: The flash sintering furnace rapidly heats the ceramic green body to the set temperature and accelerates the densification process through electric field assistance. This step significantly shortens the time required by traditional sintering processes while promoting grain growth and densification in the ceramics.
5.Cooling:
Controlling Cooling Rate: After sintering is complete, gradually lower the temperature of the flash sintering furnace to avoid cracking or deformation due to rapid cooling. The cooling rate can be adjusted based on the thermal expansion characteristics of the material.
6.Post-processing:
Machining (Optional): If the sintered ceramics require specific shapes or dimensions, further machining may be necessary, such as polishing, cutting, or grinding.
Surface Treatment: Sometimes, ceramic products undergo surface treatments, such as coating, glazing, or film deposition, to enhance their properties (e.g., wear resistance, insulation, or aesthetics).
7.Performance Testing:
Analyzing Microstructure and Physical Properties: After sintering, the microstructure, grain size, and phase composition of the ceramic material can be analyzed using techniques such as scanning electron microscopy (SEM) and X-ray diffraction (XRD).
Testing Mechanical Properties: Based on specific application requirements, test the density, hardness, compressive strength, wear resistance, and electrical conductivity of the ceramics.
