Electronic Ceramic Material Φ 8*4.9 Ceramic Seat 99% Alumina

• Customization: Available
• Application: Electronics
• Grain Size: 1-10um
• Model NO.: ANCERAMIC
• Purity: 99%
• Type: Ceramic Part
• Function: Insulating Device Ceramic
• Surface Hardness: Hra89
• Micro Structure: Polycrystalline
• Material: Alumina
• Custom Processing: Yes
• Transport Package: by Carton
• Specification: 8*4.9
• Trademark: Aonuo
• Origin: China
• HS Code: 6914100000
• Production Capacity: 100.000.000 PCS/Year

Product Description

Product Description

Customized Electronic ceramic material Φ8*4.9 ceramic seat 99% alumina

Physical properties: insulation, resistance to electrical breakdown, high temperature resistance, wear resistance, high strength.

Specifications (mm): diameter 8mm, height 4.9mm, step 3mm, inner diameter 4mm

Features:
1. Strong mechanical stress, stable shape; high strength, high thermal conductivity, high insulation; strong bonding force, anti-corrosion.
2. Good thermal cycle performance, with a cycle number of up to 50,000 times and high reliability.
3. Like PCB board (or IMS substrate), it can be engraved with various pattern structures; no pollution and no pollution.
4. The operating temperature range is -55ºC~850ºC; the thermal expansion coefficient is close to silicon, simplifying the production process of power modules.

use:
1. High-power power semiconductor modules; semiconductor refrigerators, electronic heaters; power control circuits, power hybrid circuits.
2. Intelligent power components; high-frequency switching power supplies, solid-state relays.
3. Automotive electronics, aerospace and military electronic components.
4. Solar panel components; telecommunications dedicated switches, receiving systems; laser and other industrial electronics.
5. High current, high voltage, high temperature, and easy-wear parts of electronic appliances and mechanical equipment

Some specifications are in stock, and special sizes can be produced according to customer's drawings or samples.

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FAQ

1. What is an alumina ceramic washer?
An alumina ceramic washer is a flat, disk-shaped component made from aluminum oxide (AlO). These washers are used to provide electrical insulation, thermal management, and mechanical spacing in various applications, especially in electronics and high-temperature environments.

2. What are the key properties of alumina ceramic washers?
Alumina ceramic washers possess several important properties, including:
·High dielectric strength
·Excellent thermal conductivity
·High mechanical strength and hardness
·Resistance to wear and corrosion
·Stability at high temperatures
·Chemical inertness

3. What applications are alumina ceramic washers used for?
 Alumina ceramic washers are used in a variety of applications, such as:
·Insulators in electronic devices and assemblies
·Spacers and heat spreaders in thermal management systems
·Components in high-temperature furnaces and kilns
·Parts in machinery subject to high wear and corrosion
·Insulating washers in electrical and electronic assemblies

4. How are alumina ceramic washers manufactured?
The manufacturing process of alumina ceramic washers typically involves:
·Powder preparation: High-purity alumina powder is mixed with binders and additives.
·Forming: The mixture is shaped into washer forms using methods like pressing or extrusion.
·Sintering: The shaped washers are heated at high temperatures to densify the material, enhancing its mechanical and thermal properties.
·Finishing: The sintered washers may undergo additional processes like grinding or polishing to meet precise dimensional and surface finish requirements.

5. What are the advantages of using alumina ceramic washers?
The advantages include:
·High reliability and durability in extreme environments
·Excellent electrical insulation, preventing short circuits
·Efficient heat dissipation, protecting components from thermal damage
·High mechanical strength, providing structural support
·Resistance to chemical corrosion, ensuring longevity in harsh conditions

6. Are there different grades of alumina ceramic washers?
Yes, alumina ceramic washers are available in different grades based on the purity of the alumina content. Common grades include 96% alumina, 99% alumina, and higher-purity grades. The choice of grade depends on the specific application requirements, such as thermal conductivity, mechanical strength, and cost considerations.

7. How do I select the right alumina ceramic washer for my application?
Selection criteria should include:
·Operating temperature and thermal management needs
·Mechanical strength and load-bearing requirements
·Electrical insulation properties
·Resistance to wear, corrosion, and chemical exposure
·Dimensional and tolerance specifications
·Cost considerations

8. Can alumina ceramic washers be customized?
Yes, alumina ceramic washers can be customized in terms of size, shape, thickness, and surface finish to meet specific application requirements. Customization may also include specific treatments to enhance particular properties, such as improved thermal conductivity or mechanical strength.

9. What are the limitations of alumina ceramic washers?
While alumina ceramic washers have many advantages, they also have some limitations, such as:
·Brittleness, making them susceptible to cracking under impact or stress
·Higher cost compared to some alternative materials like plastics or metals
·Complex manufacturing processes that may limit design flexibility

If you have any more questions or need further assistance, please feel free to contact us!