High-Strength Alumina Ceramic: Professional Solutions For Precision Bearings, Insulating Components & Corrosion-Resistant Liners

High-Strength Alumina Ceramic: Professional Solutions For Precision Bearings, Insulating Components & Corrosion-Resistant Liners

Introduction

Alumina ceramic (Al₂O₃) is a structural ceramic material manufactured from high-purity alumina through modern ceramic processes. It exhibits excellent mechanical strength, outstanding electrical insulation, and remarkable corrosion resistance. Available in purity grades such as 95% and 99%, it is one of the most widely used high-performance ceramics in industrial applications.

Applications

• Precision Bearings: High-speed spindle bearings, precision instrument bearings

• Insulating Components: Circuit substrates, high-voltage insulators, vacuum devices

• Chemical Protection: Reaction vessel linings, corrosion-resistant pipelines, mechanical seals

• Wear-Resistant Devices: Industrial nozzles, wear-resistant liners, textile ceramic parts

Key Advantages

1. High hardness and wear resistance (Vickers hardness ≥12 GPa)

2. Excellent electrical insulation (volume resistivity >10¹⁴ Ω·cm)

3. High-temperature and corrosion resistance (maximum service temperature: 1600°C)

4. Superior chemical stability (resists acid and alkali erosion)

5. Cost-effective (better value than specialty ceramics)

Technical Specifications

Manufacturing Process

Raw Material Selection → Formula Optimization → Isostatic Pressing → High-Temperature Sintering → Precision Machining → Quality Inspection → Final Packaging

Usage Guidelines

1. Avoid impact from hard objects to prevent brittle fracture.

2. Consider thermal expansion coefficient matching when assembling with metals.

3. Avoid prolonged use in HF acid and hot concentrated alkali environments.

4. Diamond tools are recommended for machining.

Service Support

• 12-month product quality warranty

• Professional technical support and application guidance

• Customized product development services

• Failure analysis and process optimization recommendations

FAQ

Q: How to choose between alumina and silicon nitride ceramics?
A: Alumina is suitable for insulation and general wear resistance applications, while silicon nitride is ideal for higher strength and thermal shock resistance.

Q: What is the minimum achievable aperture size?
A: Using precision machining technology, minimum apertures of 0.3mm can be achieved.

Q: What surface finish can be achieved?
A: After polishing, surface roughness can reach Ra ≤0.1μm.

We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics.

Deyu Precision Ceramics Technology Co., Ltd. has many years of experience in producing special precision ceramics, and has the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. At present, the company has production and processing equipment such as dry press, isostatic press, experimental furnace, flat kiln, machining center, surface grinder, universal internal and external grinder, centerless grinder and laser cutting machine, as well as complete high-precision testing equipment such as high-precision projector, three-dimensional tester, metallographic microscope, hardness tester and densitometer.

With advanced production technology and complete production facilities, the company is one of the few domestic enterprises that can produce special precision ceramic structural parts and functional parts with machining accuracy less than 2 microns, and has strong core competitiveness in the same industry in China.

Advantages of the company: 1. National new technology enterprises; 2. The company has a municipal R&D center; 3. Cooperation with domestic key universities and research institutes; 4. Design, molding, sintering and precision processing; 5. The products cover alumina, zirconia, silicon nitride, silicon carbide and other precision ceramics; 6. Precision plus technology.

The company has always been standing in the position of customers to solve problems, focusing on the principle of quality and delivery time, adhering to the business philosophy of "integrity, innovation and reassurance", and sincerely looking forward to cooperating with you.