Customized high purity industrial alumina ceramic standard parts

Overview of Alumina ceramic standard parts

Alumina ceramic standard parts are ceramic materials with high-purity alumina (Al₂O₃) as the main component, and the alumina content is generally above 95%. It has excellent properties, such as high strength, high hardness, high wear resistance, high insulation, high-temperature resistance and good chemical stability. The manufacturing process mainly includes raw material preparation, molding, sintering and post-processing steps. The sintering temperature is usually between 1400℃ and 1700℃ to enhance its density and mechanical properties.

Alumina ceramic standard parts can be divided into various specifications and models according to different standards, such as shape, size, performance, etc., to meet the needs of different application scenarios. Common products include ceramic substrates, ceramic tubes, ceramic rods, ceramic balls, etc., which are widely used in electronics, machineries, chemicals, aerospace, medical equipment and other fields, such as circuit boards, insulators and electronic component substrates in the electronics industry, wear-resistant parts in the machinery industry, etc.

Features of Alumina ceramic standard parts

Alumina ceramic standard parts have many remarkable characteristics. In terms of mechanical properties, alumina ceramic standard parts have high hardness, second only to diamond and silicon carbide, with a Mohs hardness of up to 9, excellent wear resistance, and are suitable for bearings, cutting tools, etc.; high compressive strength, up to 2000-4000MPa, better than most metals, high rigidity, elastic modulus of 300-400GPa, but high brittleness and weak impact resistance.

In terms of thermal properties, alumina ceramic standard parts have a high melting point of about 2072℃, a low thermal expansion coefficient of about 7×10⁻⁶/℃, good thermal stability, better thermal shock resistance than ordinary ceramics, and medium thermal conductivity of about 30 W/(m·K), suitable for high-temperature heat dissipation components.

In terms of electrical properties, the high insulation of alumina ceramic standard parts makes them widely used in electronic insulation substrates. The room temperature resistivity is greater than 10¹⁴Ω·cm, the dielectric strength is 10-25kV/mm, the dielectric constant is low, ε is about 9-10, and the high-frequency signal transmission loss is small.

In terms of chemical stability, alumina ceramic standard parts are corrosion-resistant and resistant to acid, alkali, and molten metal erosion. Except for hydrofluoric acid and hot concentrated alkali, they are suitable for chemical reactor linings. They are resistant to oxidation, do not react with oxygen at high temperatures, and can be used in inert environments.

In addition, alumina ceramic standard parts also have good optical properties, such as high transparency, high gloss and excellent wear resistance, and can be used for optical windows, lamp reflectors, etc. Alumina ceramic standard parts are also biocompatible, and high-purity ones can be used for artificial joints, dental implants, etc.

Finally, in terms of economy, alumina ceramic raw materials are abundant in reserves, the preparation process is mature, and the cost of medium and low-purity products is controllable. Compared with other precision ceramics, the cost is more economical and affordable, making it an ideal material choice for customers in many fields.

Specifications table of Alumina ceramic standard parts

Property	Specification
Material Composition	High-purity alumina (Al₂O₃) with a typical purity of 95% to 99.9%
Density	3.95 to 4.02 g/cm³
Hardness	Mohs hardness: 9; Vickers hardness: 1800-2200 HV
Tensile Strength	100-200 MPa
Compressive Strength	2000-4000 MPa
Flexural Strength	300-500 MPa
Elastic Modulus	300-400 GPa
Thermal Properties	– Melting point: 2072°C<br>- Thermal expansion coefficient: 7×10⁻⁶/°C (room temperature to 1000°C)<br>- Thermal conductivity: 30 W/(m·K) at room temperature<br>- Specific heat capacity: 0.88 kJ/(kg·K)
Electrical Properties	– Insulation resistance: >10¹⁴ Ω·cm at room temperature<br>- Dielectric constant (ε): 9-10 at 1 MHz<br>- Dielectric strength: 10-25 kV/mm
Chemical Stability	– Highly resistant to acids, bases, and most chemicals (except hydrofluoric acid and hot concentrated alkalis)<br>- Excellent oxidation resistance at high temperatures
Optical Properties	– High transparency (for transparent alumina ceramics)<br>- High gloss surface finish (for polished parts)
Surface Finish	– Roughness: <0.1 µm (for polished surfaces)<br>- Coating options: Available for specific applications (e.g., PVD coatings)
Dimensional Accuracy	– Tolerance: ±0.01 mm for standard parts<br>- Custom tolerances available based on specific requirements
Common Shapes	– Discs, rods, tubes, rings, spheres, plates, etc.
Standard Sizes	– Customizable based on application requirements
Color	White (natural color of alumina ceramic)
Applications	– Electronics (insulators, substrates)<br>- Mechanical (bearings, wear parts)<br>- Chemical (reactor linings, corrosion-resistant components)<br>- Medical (implants, dental components)<br>- Aerospace (high-temperature components)

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Applications of Alumina ceramic standard parts

Alumina ceramic standard parts are widely used in many fields due to their excellent physical, chemical and mechanical properties. The following are some of the main application directions:

Electronic industry: Alumina ceramics have good electrical insulation and high-temperature resistance. They are often used to manufacture circuit boards, insulators, substrate materials for electronic components, etc., and can meet the use requirements of electronic equipment under high temperature and high-frequency conditions.

Mechanical parts: In the mechanical industry, alumina ceramics are used to manufacture wear-resistant parts such as bearings, sealing rings, gears, valves, etc. Its high hardness and wear resistance make it perform well in high-wear environments and extend the service life of the equipment.

Aerospace: Alumina ceramics are also widely used in the aerospace field, such as thermal protection systems and engine components of spacecraft. High-temperature performance and corrosion resistance enable them to work normally in extreme environments.

Medical devices: In the manufacture of medical devices, alumina ceramics are used to prepare bioceramics, artificial joints, dental implants, etc. The good biocompatibility and wear resistance of alumina ceramic standard parts make them have potential application value in the medical field.

Refractory materials: Alumina ceramics, as a refractory material, are often used in high-temperature furnace linings, refractory bricks and other products in metallurgy, building materials and other industries and can effectively resist high temperature and chemical corrosion.

Chemical industry: In the chemical industry, alumina ceramics can be used to manufacture chemical filler balls, inorganic microfiltration membranes, corrosion-resistant coatings, etc., among which alumina ceramic membranes and coatings are the most studied and applied.

Other applications: Alumina ceramics are also used to manufacture transparent ceramics, semiconductor components, high-precision mechanical seals, high-voltage insulators, laser tubes, etc., and their application areas are constantly expanding with the development of science and technology.

Alumina ceramic standard parts have become an indispensable material in many industries due to their excellent performance. With the advancement of science and technology, their application areas and market demand are expected to expand further.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

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T/T, Western Union, Paypal, Credit Card etc.

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By air, by sea, by express, as customers request.

5 FAQs of Alumina ceramic standard parts

Q1:What is the manufacturing process of alumina ceramic standard parts?

The manufacturing process mainly includes steps such as raw material preparation, molding, sintering and post-processing. The sintering temperature is usually between 1400℃ and 1700℃ to enhance its density and mechanical properties. Molding methods include pressing, injection molding, tape casting, etc., and post-processing includes grinding, polishing, etc.

Q2:How difficult is the processing of alumina ceramic standard parts?

Alumina ceramics have high hardness and are difficult to process. Special processing equipment and tools, such as diamond tools, are required. Common processing methods include diamond grinding, laser processing, EDM, and ultrasonic processing.

Q3:What is the cost of alumina ceramic standard parts?

Alumina ceramic raw materials are abundant in reserves, the preparation process is mature, and the cost of medium and low-purity products is relatively controllable, but the cost of high-purity, high-performance alumina ceramic products is relatively high. Its cost is related to factors such as purity, specifications, and processing accuracy.

Q4:How to choose the purity of alumina ceramic standard parts?

Choose alumina ceramics of different purities according to specific application requirements. For example, for applications that require high electrical insulation and high hardness, 99% pure alumina ceramics can be selected; for some cost-sensitive applications with slightly lower performance requirements, 95% pure alumina ceramics can be selected.

Q5:What is the chemical stability of alumina ceramic standard parts?

Alumina ceramics have good chemical stability and can resist the corrosion of most acids and alkalis except hydrofluoric acid and hot concentrated alkali. In the chemical industry, they can be used to manufacture chemical filler balls, inorganic microfiltration membranes, corrosion-resistant coatings, etc.