High Heat-Resistant Customized Industrial Alumina Ceramic Structural Parts

Overview of Alumina ceramic structural parts

Alumina ceramic structural parts are parts made of ceramic materials with aluminum oxide (Al₂O₃) as the main component. Alumina ceramic structural parts have excellent mechanical properties, such as high strength, high hardness and good wear resistance, and can maintain stable shape and size under complex working conditions. In terms of chemical properties, alumina ceramic structural parts have strong corrosion resistance and are not easily corroded by a variety of chemical substances.

Alumina ceramic structural parts are often used in many fields, such as electronics, machinery, and chemicals, due to their excellent electrical insulation and high-temperature resistance, providing reliable protection for equipment operation and meeting the demand for performance components in industrial production.

Features of Alumina ceramic structural parts

Alumina ceramic structural parts have many remarkable characteristics. The hardness of alumina ceramic structural parts is extremely high, second only to diamond, with a Mohs hardness of up to 9 and wear resistance of 266 times that of manganese steel and 171.5 times that of high-chromium cast iron. It can effectively resist wear and extend the service life of equipment.

Alumina ceramic structural parts have good strength and rigidity, a bending strength of up to 500 MPa, are not easy to deform, and can withstand large loads. Alumina ceramic structural parts have excellent high-temperature resistance, a melting point of up to 2050℃, a low thermal expansion coefficient, a continuous use temperature of up to 1000℃, and good thermal shock resistance, and can maintain stable performance in high-temperature environments.

At the same time, alumina ceramic structural parts have excellent electrical insulation, high resistivity, up to 10¹⁴Ω·cm or more, and insulation strength of more than 15kV/mm, which can effectively prevent current leakage and ensure the safe operation of equipment.

Alumina ceramic structural parts have strong corrosion resistance and good corrosion resistance to most chemical media such as acids, alkalis, and salts. They can remain stable even in strong acid environments such as sulfuric acid, hydrochloric acid, and nitric acid. The density is relatively low, only 3.5-3.8g/cm³, which is about half of that of steel. It can be used to reduce the weight of equipment, improve performance, and reduce energy consumption.

Alumina ceramic structural parts have good biocompatibility, are non-toxic and non-irritating, and can be used to make products in the biomedical field, such as medical devices.

In addition, alumina ceramic structural parts have high dimensional stability, are not prone to aging, have a long service life, and can generally be used directly without processing. They are particularly suitable for ceramic electronic devices with high precision requirements.

Specifications table of Alumina ceramic structural parts

Property	Specification
Material	High-purity Alumina (Al₂O₃)
Purity	99.5% – 99.9% (depending on grade)
Hardness	Mohs hardness: 9 <br> Vickers hardness: 2000-2200 HV
Density	3.5-3.9 g/cm³
Mechanical Properties	– Compressive strength: 3000-4000 MPa <br> – Flexural strength: 500-700 MPa <br> – Tensile strength: 200-300 MPa
Thermal Properties	– Melting point: 2050°C <br> – Thermal conductivity: 20-30 W/m·K <br> – Coefficient of thermal expansion: 7-8 x 10⁻⁶/K
Electrical Properties	– Volume resistivity: >10¹⁴ Ω·cm <br> – Dielectric strength: >15 kV/mm <br> – Dielectric constant: 10-12 (at 1 MHz)
Chemical Resistance	Excellent resistance to acids, alkalis, and salts
Dimensional Stability	High precision, low thermal expansion, minimal deformation over time
Surface Finish	Standard: Matte <br> Optional: Polished, coated
Operating Temperature	– Continuous: Up to 1000°C <br> – Intermittent: Up to 1500°C
Applications	Electronics, mechanical components, chemical processing, medical devices
Customization	Available in various shapes and sizes, custom designs possible

Applications of Alumina ceramic structural parts

Alumina ceramic structural parts are widely used. In the mechanical field, the high hardness and wear resistance of alumina ceramic structural parts make them useful in manufacturing bearings, seals, etc., extending the life of the equipment.

In electronics, alumina ceramic structural parts can be used to manufacture insulators, substrates and other components with their excellent electrical insulation and high-temperature resistance to ensure stable operation of the equipment.

In the chemical industry, the corrosion resistance of alumina ceramic structural parts is used to manufacture pipes, valves, etc., which are suitable for strong acid and alkali environments.

In addition, alumina ceramic structural parts are also used in high-end manufacturing industries, such as aerospace and automobile manufacturing, to manufacture engine parts, brake discs, etc., to meet special performance requirements.

In medical equipment, alumina ceramic structural parts have good biocompatibility and strong corrosion resistance. They can be used to make medical devices, artificial joints, etc., to protect human health and promote the development of medical technology.

Company Profile

Alumina Technology Co., Ltd.! We focus on the research and development, production and sales of alumina products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Alumina Boat, Alumina Crucible, Alumina Dish, Alumina Foam Filter, Alumina Plate, Alumina Rod, Alumina Bar, Alumina Balls, Filter Alumina, Nano Alumina Powder, Spherical Alumina Powder, ect. please feel free to contact us.(nanotrun@yahoo.com)

Payment Methods

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

Shipment Methods

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

5 FAQs of Alumina ceramic structural parts

Q1:What are the processing technologies for alumina ceramic structural parts?

Its processing mainly includes high-purity powder preparation, molding process and sintering process. High-purity powder preparation requires ultra-fine grinding of alumina powder and spray granulation; molding processes include dry pressing, grouting, tape casting and other methods; sintering processes include atmospheric sintering, hot isostatic pressing, etc.

Q2:Is it difficult to process alumina ceramic structural parts?

The processing is difficult. Because of its high hardness, second only to diamond, superhard tools and CNC technology are required during processing, such as diamond tool cutting, multi-stage grinding and polishing, laser/electro-spark machining, etc., to achieve high-precision and high-finish processing.

Q3:What are the specific applications of alumina ceramic structural parts in the semiconductor industry?

In semiconductor equipment, it is often used as an insulating component, such as insulators, insulating tubes, insulating plates, etc.; it is also used to manufacture heat dissipation components, such as heat sinks, heat pipes, etc.; it can also be used as a structural component, such as a bracket, a fixing seat, a substrate, etc., as well as a packaging material for semiconductor devices.

Q4:What is the electrical insulation performance of alumina ceramic structural parts?

It has high resistivity, which can reach 10¹⁵Ω・cm at room temperature, and insulation strength is above 15kV/mm. It is an ideal electrical insulation material and is often used in the electronic and electrical fields. It can effectively prevent current leakage and ensure the safe operation of equipment.

Q5:Why do alumina ceramics have high hardness and strength?

Alumina ceramics are mainly composed of aluminum oxide (Al₂O₃), and their internal structure is a stable α-Al₂O₃ structure. Oxygen ions form a close-packed hexagonal structure, and aluminum ions fill two-thirds of the octahedral gaps. This close arrangement gives the material extremely high hardness and strength.