Technical Ceramics
Technical and advanced ceramics succeed where other materials fail, such as in corrosive environments, extreme temperatures, high wear rates, large stresses or high electrical currents. Alumina provides a specific set of properties that allows technical ceramics to succeed, including a high melting temperature, tensile strength, heat capacity, electrical resistance and excellent wear characteristics.
These characteristics make alumina an excellent choice for a wide variety of applications. Some of the most common applications are components used in automotive, electronics, energy, environmental, household, industrial and medical devices.
Almatis unground calcined aluminas for technical ceramics need to be processed further and are often spray dried prior to use in a particular application. Choosing an unground product allows the user to control the particle size distribution and simultaneously blend other batch components.
The primary crystal size, specific surface area and morphology of our unground aluminas are tightly controlled to provide a consistent and easy to process alumina in wet or dry systems.
Technical and advanced ceramic components have functional and supporting roles within their applications in order to provide a safe operating environment. The alumina components are mainly internal to equipment such as protective coatings, liners and seals for high temperature, wear or corrosive environments. Other alumina products such as spacers, feedthroughs, tubes, rings and mounts offer electrical or thermal resistance. Regardless of whether the end-use application is Industrial, commercial, medical, analytical or domestic, alumina-based products are critical for reliable operation.
Almatisbatch and continuous ground calcined aluminas for technical ceramics are well suited for various formulations, whether as the only component in an all-alumina body, major component in a high-alumina body or as filler in a low-alumina matrix.
Almatis batch ground products are ideal for users that do not have internal grinding capability or would prefer an already ground product. They have been successfully used in many production processes, such as tape casting, slip casting, injection molding, roll compaction, uniaxial and isostatic pressing and extrusion.
Unground Calcined Aluminas
Primary Crystal Size = 4.8µm
Specific Surface Area = 0.20 m2/g
Na2O Content = 0.08%
Safety Data Sheet
Product Data Sheet
Primary Crystal Size = 4.1µm
Specific Surface Area = 0.30 m2/g
Na2O Content = 0.06%
Primary Crystal Size = 2.1µm
Specific Surface Area = 0.60 m2/g
Na2O Content = 0.03%
Primary Crystal Size = 1.8µm
Specific Surface Area = 0.70 m2/g
Na2O Content = 0.06%
Primary Crystal Size = 1.7µm
Specific Surface Area = 0.90 m2/g
Na2O Content = 0.06%
Primary Crystal Size = 1.1µm
Specific Surface Area = 1.2 m²/g
Na2O Content = 0.06%
Primary Crystal Size = 3.0µm
Specific Surface Area = 0.40 m2/g
Na2O Content = 0.30%
Technical PaperPrimary Crystal Size = 2.7µm
Specific Surface Area = 0.50 m2/g
Na2O Content = 0.11%
Primary Crystal Size = 2.7µm
Specific Surface Area = 0.50 m2/g
Na2O Content = 0.12%
Primary Crystal Size = 2.0µm
Specific Surface Area = 0.60 m2/g
Na2O Content = 0.12%
Primary Crystal Size = 1.7µm
Specific Surface Area = 0.70 m2/g
Na2O Content = 0.12%
BET =1.2 m²g
Na2O Content = ≤0.03%
BET = 0.90 m²g
Press Density = 2.22 g/cm³
Na2O Content = ≤0.03%
BET = 1.2 m²g
Na2O Content = ≤0.01%
BET =0.95 m²g
Press Density = 2.22 g/cm³
Na2O Content = ≤0.01%
BET = 0.6 m²g
Press Density = 2.28 g/cm³
Na2O Content = ≤0.01%
Continuous Ground Calcined Aluminas
Ground Median Size = 8.0µm
Ground Surface Area = 0.50 m²/g
Na2O Content = 0.08%
Ground Median Size = 3.2µm
Ground Surface Area = 0.80 m²/g
Na2O Content = 0.03%
Ground Median Size = 4.2µm
Ground Surface Area = 0.90 m²/g
Na2O Content = 0.06%
Ground Median Size = 3.9µm
Ground Surface Area = 0.90 m²/g
Na2O Content = 0.06%
Ground Median Size = 5.0µm
Ground Surface Area = 0.70 m²/g
Na2O Content = 0.30%
Ground Median Size = 4.5µm
Ground Surface Area = 0.70 m²/g
Na2O Content = 0.11%
Ground Median Size = 4.8µm
Ground Surface Area = 0.70 m²/g
Na2O Content = 0.12%
Ground Median Size = 3.4µm
Ground Surface Area = 1.0 m²/g
Na2O Content = 0.12%
Batch Ground Reactive Aluminas
Ground Median Size = 0.4µm
Ground Surface Area = 8.8 m²/g
Na2O Content = 0.07%
Ground Median Size = 0.4µm
Ground Surface Area = 7.5 m²/g
Na2O Content = 0.08%
Ground Median Size = 0.6µm
Ground Surface Area = 8.2 m²/g
Na2O Content = 0.07%
Ground Median Size = 1.2µm
Ground Surface Area = 4.3 m²/g
Na2O Content = 0.06%
Ground Median Size = 1.4µm
Ground Surface Area = 3.1 m²/g
Na2O Content = 0.06%
Ground Median Size = 1.7µm
Ground Surface Area = 4.9 m²/g
Na2O Content = 0.07%
Ground Median Size = 1.6µm
Ground Surface Area = 5.1 m²/g
Na2O Content = 0.08%
Ground Median Size = 2.7µm
Ground Surface Area = 2.5 m²/g
Na2O Content = 0.07%
Ground Median Size = 2.3µm
Ground Surface Area = 1.6 m²/g
Na2O Content = 0.07%
Median Granule Size = 170µm
Ground Median Size = 0.4µm
Ground Surface Area = 7.0 m²/g
Na2O Content = 0.08%7.5
Median Granule Size = 170µm
Ground Median Size = 0.4µm
Ground Surface Area = 7.2 m²/g
Na2O Content = 0.03%
BET = 7.0 m²g
D50 = 0.5 µm
Na2O Content = ≤0.01%
BET = 3.0 m²g
D50 = 1.3 µm
Na2O Content = ≤0.01%
BET = 7.8 m²g
D50 =0.5 µm
Na2O Content = ≤0.03%
BET = 3.0 m²g
D50 = 1.3 µm
Na2O Content = ≤0.03%
BET = 1.0 m²g
D50 = 4.0 µm
Na2O Content = ≤0.01%
Ground Median Size = 3.1µm
Ground Surface Area = 1.1 m²/g
Na2O Content = 0.06%