information centre / Ceramic material, Company News, Industry Information / Alumina Ceramics: Characteristics, Applications And Future Development Trends

Alumina Ceramics: Characteristics, Applications And Future Development Trends

Introduction

Alumina ceramics (Al2O3 ceramics) are inorganic non-metallic materials with α-alumina as the main crystal phase. Due to its high hardness, high temperature resistance, good insulation and other characteristics, it is widely used in electronics, machinery, chemical industry, medical and other fields. Ingredients: The Al2O3 content is usually 75%~99.9%. The higher the purity, the better the performance (such as 99.6% high-purity alumina ceramics). Classification: According to the purity, it is divided into ordinary type (75%~95%) and high-purity type (≥99%).

Contact Us
Live
Specifications|Support customization
Drawings of precision ceramic plates and rods
Plate material mm (L, H, and W can be selected as needed, customization supported)
L 3 5 8 10 12 15 18 20 22 25 28 More (Customizable)
W*H 100*100 90*140 95*145 150*150 160*160 122*290 110*275         More (Customizable)
Rod material mm (W, Ø can be selected as needed, customization supported)
Ø 0.5 0.8 0.9 1 1.5 2 2.5 3 3.5 4 4.5 More (Customizable)
W 60 100 120 200               More (Customizable)
Alumina ceramics: properties, preparation and application prospects

1.Core characteristics and advantages
Characteristics Parameters/performance Application value
Hardness Mohs hardness 9, second only to diamond Wear-resistant parts, cutting tools
High temperature resistance Melting point 2050℃, long-term use temperature 1600℃ Furnace lining, aerospace materials
Insulation Resistivity 10¹⁴~10¹⁶ Ω·cm Electronic substrate, insulating sleeve
Corrosion resistance Acid, alkali, molten metal corrosion resistance Chemical pipelines, biomedical materials
Mechanical strength Bending strength 300~550 MPa Mechanical sealing rings, bearings

2. Main application areas
Electronic industry

Integrated circuit substrate: using high thermal conductivity and insulation, used for LEDs and power modules.

Vacuum tube shell: high purity alumina (99.5%) prevents gas penetration.

Machinery manufacturing

Wear-resistant parts: ceramic knives, textile yarn guides.

Sealing ring: corrosion-resistant and high-temperature resistant, used for pump and valve equipment.

Medical field

Artificial joints/dental implants: excellent biocompatibility, no rejection reaction.

Energy and environmental protection

Fuel cell membrane: stable ion conductivity.

Wear-resistant pipes: conveying powder or corrosive media.

3. Production process
Raw material preparation: high-purity alumina powder (particle size 0.1~1 μm) doped with MgO, SiO₂, etc. to inhibit abnormal grain growth.

Molding process:

Dry pressing: suitable for simple shapes and low cost.

Injection molding: complex precision parts (such as dental implants).

Isostatic pressing: high density and high performance requirements.

Sintering technology:

Normal pressure sintering: 1600~1800℃, economical and applicable.

Hot pressing sintering: improve density and reduce pores.

4. Market status and future trends
Market size: The global alumina ceramic market will be approximately US$8.5 billion in 2023, with an annual growth rate of 6.2% (data source: Grand View Research).

Technology trends:

Nano alumina ceramics: improve fracture toughness (such as ZrO₂ toughening).

3D printing technology: customized complex structure medical implants.

Challenges:

High-purity powder costs account for more than 40%, and cost reduction is urgent.

VI. How to choose a high-quality alumina ceramic supplier?

Certification standards: ISO 6474-1 (medical), ASTM F603 (industrial grade).

Key indicators: density ≥ 3.8 g/cm³, porosity < 0.1%.

Case reference: Kyocera, Japan, CeramTec, Germany.

 

*Values ​​are typical material properties, actual values ​​may vary due to product configuration and manufacturing process.
*For more details, please feel free to contact our company.
Other
Precision ceramic products
ceramic mounting base

Alumina ceramic grading wheels

Material:Alumina ceramics

Describe:Customized alumina (Al2O3) ceramic grading wheels, also known as ceramic fixed seats or specialty rings, feature a unique groove design for precise material classification and separation. Alumina ceramics' high hardness and strength maintain shape and performance under high-pressure, high-friction conditions, ensuring stable operation and equipment longevity.

porous fixed bracket clasp

Silicon carbide ceramic bars

Material:Silicon Carbide Ceramics

Describe:Custom silicon carbide (SiC) ceramic clamp bars offer secure fixing in mechanical equipment, with high pressure and friction resistance for extended lifespan.

ceramic insulator

Zirconia ceramic head cap

Material:Zirconia Ceramics

Describe:Zirconia ceramic head caps provide insulation and thermal protection for electrical components with smooth surfaces and precise designs. Their high hardness and strength ensure reliable performance under extreme pressure and temperature, ensuring equipment longevity and stability.

Ultra-thin ceramic partition plate

Ultra-thin silicon nitride ceramic plate

Material:Silicon Nitride Ceramics

Describe:Explore ultra-thin silicon nitride ceramic plates for high-temperature environments like heat exchangers and combustion chambers. Ideal for lightweight, high-strength applications in semiconductor manufacturing and other industries, their chemical stability and low thermal expansion coefficient ensure superior mechanical and thermal performance.

MgO Magnesium Oxide Ceramic Yellow Sleeve Tube

Material:Zirconia Ceramics

Describe:MgO Magnesium Oxide Ceramic Yellow Sleeve Tube,also used in food filling as metering pump components. These precision-engineered units offer precise fluid control with high hardness and strength, ensuring stable performance and longevity under demanding conditions of pressure and flow.

customized zirconia ceramic special-shaped tube

Customized Zirconia Ceramic Special-shaped Tubes

Material:Zirconia Ceramics

Describe:Customized zirconia (ZrO2) ceramic special-shaped tubes, also known as industrial ceramic threaded connecting tubes. Designed with precision threads for mechanical systems, these ceramic tubes ensure high-quality sealing and structural integrity. Their smooth surfaces reduce friction, optimizing fluid or gas flow efficiency.