Alumina

Saint-Gobain Surface Conditioning's calcined aluminas are processed single platey crystals with tunable phase and physical properties. Our calcined aluminas are manufactured from high-quality calcined alumina feed stock and designed with tight particle size distributions for an optimal scratch-free finish. For the ultimate finish, we offer a wet processed product that further reduces the degree of primary crystal agglomeration.

Calcined alumina offers a lower-cost option to our premium seeded-gel alumina while maintaining relatively high polishing rates and good surface finish. The platey shape and hardness of this abrasive grain allows it to perform well when lapping harder materials.

Saint-Gobain offers both dry and wet processed calcined alumina in a wide selection of particle distribution, solids concentration, pH regime and purity that can be custom engineered to meet your material removal rate and finish requirements.

Engineered Alumina
Precision Engineered Alumina

Engineered alumina particle suspensions are produced from seeded gel and calcined particles. Our suspensions are processed through an aqueous milling workflow to deliver high purity, alpha-phase alumina with colloidal characteristics suitable for a wide range of applications. Our particles maintain mechanical strength, high abrasion performance, and thermal stability during various chemical, mechanical, and thermal environments.

Designed for ease of formulation and process robustness, our alumina particle suspensions perform reliably across a wide range of substrates, process conditions and applications. Our particle suspensions are suited for a variety of industries ranging from performance to specification driven markets.

Applications:

Our engineered alumina particle suspensions are recommended for polishing the following surfaces or substrates:

Sapphire
Tungsten
Ferrous metal alloys
Precious metals
Metallurgical samples
Engineered polymers

Precision engineered alumina particle suspensions are created through advanced wet milling using precisely managed aqueous chemistries and mechanical parameters. These tight controls enable uniform structural characteristics critical to high performance applications. This process refines particles while enhancing colloidal stability, flow behavior, and batch-to-batch consistency. Integrated process monitoring and data driven controls ensure our precision engineered alumina particle suspensions meet stringent specifications for particle size and distributions.

Precision engineered alumina particle suspensions exhibit high mechanical strength, stable alpha-phase, and thermal and abrasion resistance. With high purity and precision-controlled particle size distribution, these suspensions are designed for technically demanding markets where consistency, predictability, and performance at tight tolerances are essential.

Applications:

Our precision engineered alumina particle suspensions are recommended for polishing advanced packaging materials, such as electronics, polymers and polymer matrix composites, needing high removal rate.