Alumina

Benefits

The benefits of 3D printing Alumina using CONCR3DE’s binder jetting platform are numerous.

Large Parts
A key benefit is that binder jetting allows the creation of large parts, of up to 30 cm. This is impossible with other 3D printing technology and can be beneficial for the simplifying of large assemblies and applications that simply require large dimensions.

Highly Complex Parts
Binder jetting also allows for the creation of highly complex parts. The process doesn’t require supports, so overhangs and undercuts are possible. We can get a high green strength, meaning even highly delicate parts can be depowdered.

Large Surface Area
By 3D printing porous Alumina, we get a very large surface area. This is beneficial for appilcations such as catalysis, filtration, and energy storage.

Thermal Stability
The 3D printed Alumina exhibits excellent thermal stability, making it suitable for applications requiring resistance to extreme heat, such as in thermal insulation, furnace linings, and aerospace components.

Chemical Inertness
Our 3D printed Alumina remains chemically inert after sintering, This means it does not react with most chemicals. This property makes our 3D printed alumina ideal for applications in corrosive environments, such as chemical processing and filtration.

Purity & Density

Different densities can be achieved using different grades of Alumina. Fully dense parts can be achieved using a particle-filled binder. The table below gives an overview of different Alumina grades that are available, their porosity and their mechanical performance.

Porous Alumina, with a purity of 86 to 99%, can be achieved with our aqueous BC1002 binder and suitable Alumina powder. Fully dense alumina requires the BC1003 binder, a particle-filled binder developed by the German ceramic experts at WZR.

Applications

Our alumina has a large range of applications that all benefit from its heat resistance, its chemical inertness and its light weight. We find applications in kiln furniture, investment casting, thermal insulation, filtration and chemical processing, as well as in the aerospace industry. The applications have in common that they require one or more of the above material properties, while finding added value in highly complex forms and flexibility options of our binder jetting platform.