Alumina Balls

A brief overview of alumina spherical ceramic products

Alumina spherical ceramic products are spherical ceramic materials made of high-purity alumina (Al₂O₃) as the main ingredient through a special process. The material has the advantages of high strength, high hardness, good abrasion resistance, corrosion resistance and good electrical insulation properties, and is widely used in various industrial fields. The production process usually includes a number of steps, such as raw material selection and pretreatment, molding, drying and sintering. The microstructure of the finished product determines its physical and chemical properties, which can be optimized by adjusting the sintering temperature and holding time. Alumina spherical ceramics not only excel in mechanical strength and thermal stability but also possess excellent biocompatibility and have important applications in the medical industry.

Advantageous characteristics of alumina spherical ceramic products

Alumina spherical ceramic products are favored for their excellent physical and chemical properties. First, they are extremely hard and wear-resistant, which allows them to work stably for long periods in harsh environments, reducing maintenance costs and extending service life. Secondly, alumina spherical ceramics have excellent high-temperature resistance and can maintain structural integrity under extreme temperature conditions, making them suitable for use in metallurgical and chemical industries. In addition, this material demonstrates excellent corrosion resistance, ensuring long durability even in the face of strong acidic and alkaline environments. Further, alumina spherical ceramic products possess good electrical insulation properties, making them ideal for power transmission equipment. Finally, their low density makes them lightweight and easy to handle and install.

Specification of alumina spherical ceramic products

Parameter	Specification
Material Composition	High-purity alumina (Al₂O₃)
Shape	Spherical
Density	Approximately 3.9-4.0 g/cm³
Hardness (Vickers)	≥ 18 GPa
Flexural Strength	≥ 350 MPa
Thermal Conductivity	~30 W/m·K at room temperature
Coefficient of Thermal Expansion	7.2×10⁻⁶/°C (20-1000°C)
Dielectric Strength	≥ 18 kV/mm
Operating Temperature	Up to 1700°C in air
Corrosion Resistance	Excellent against acids and alkalis
Surface Finish	Available in polished or as-sintered condition

Production process of alumina spherical ceramic products

The production of alumina spherical ceramic products is a complex and delicate process that involves several key steps. First is the raw material preparation stage, which requires the use of high-purity alumina powder, and may add appropriate amounts of sintering additives and other auxiliary materials to improve the performance of the final product. Next is the molding process, where the mixed powder is made into a spherical billet through wet or dry compression molding techniques; for higher precision requirements, more advanced methods such as slurry molding or cold isostatic pressure molding may also be used. Then comes the drying process, which aims to remove moisture from the billet to ensure that no cracks or other defects are produced during the subsequent sintering process. Sintering is the core component that determines the quality of alumina spherical ceramics, and it needs to be carried out in a strictly controlled high-temperature environment so that a solid-state reaction occurs between the powder particles to form a dense and solid structure. Finally, according to the specific needs of the finished product, surface treatment and dimensional testing are to ensure that it meets the use standards.

Application areas of alumina spherical ceramic products

With their unique performance advantages, alumina spherical ceramic products find a wide range of applications in many industries. In the field of mechanical engineering, they are often used as grinding media, bearing balls and seals, as these components are subjected to high pressures and friction, and alumina ceramics provide exactly the necessary wear resistance and mechanical strength. In the electronics industry, alumina spherical ceramics are used as insulators and substrates to isolate currents and maintain stable electrical properties effectively. The chemical industry utilizes its excellent corrosion resistance to make reactor linings, filter components, etc. to ensure safety and reliability when exposed to corrosive substances. In addition, in the medical and health fields, alumina spherical ceramic products are ideal for dental implants and orthopedic restorative materials due to their excellent biocompatibility and non-toxicity. With the progress of science and technology, the scope of application of these high-performance ceramic materials is still expanding and gradually penetrating more emerging technologies and high-end manufacturing.

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 about Alumina Spherical Ceramic Products

How high can alumina spherical ceramic products withstand?

Alumina spherical ceramic products can generally withstand temperatures up to 1700°C or more, depending on the production process and formulation.

Are alumina spherical ceramic products prone to breakage?

Although alumina ceramics have a high degree of brittleness, the risk of rupture can be significantly reduced through proper processing and appropriate conditions of use.

What are the main applications for alumina spherical ceramic products?

They are mainly used in the fields of machinery, electronics, chemical industry and medicine, such as abrasive media, insulators, reactor linings, etc.

What is the price of Alumina Spherical Ceramic Products?

The price varies according to the specification, quality quantity, etc. High-quality products usually have higher prices, while bulk purchases can enjoy discounts.

What is the lead time for Alumina Spherical Ceramic Products?

The lead time for standard products is shorter, while customized products are subject to specific customer requirements and may require additional time for production and quality inspection.