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Final Advanced Materials offers a range of ceramic powders : alumina, boron nitride, magnesia, zirconium oxide, aluminium nitrid, boron, carbides, nitride, ...
Alumina powder Al203
Alumina is a ceramic of composition Al203. The structure, purity, hardness and the specific surface are the main characteristics of the powders. Calcination times vary from one range to another; some aluminas are harder, others softer. The grain sizes and distributions are also different.
Boron nitride powder BN
Our wide range of boron nitride powders, also known as white graphite, are of varying purity and grain size (from less than 1 to more than 100 μm). They are designed for many applications, such as separation, lubrication or plastic work.
Magnesia powder MgO
Our wide range of magnesia (magnesium oxide) powders are of varying purities and grain sizes and are suitable for many applications. Our powder grades vary according to purity, grain size and distribution.
Zirconium oxide powder ZrO2
This is an ultra-fine, highly reactive powder composed of zircon stabilised with yttrium oxide. It is white, non-toxic and chemically stable with a controlled surface area (can be provided with an organic binder if needed).
Final Advanced Materials can also provide borides, borons, carbides, nitrides and more.
FAQs that can help you in this category
Final Advanced Materials' hexagonal boron nitride (h-BN) is an excellent high-temperature dry lubricant due to its layered structure similar to that of graphite. It remains stable up to 900°C in air and 2,500°C in a vacuum or inert atmosphere. It also has a thermal conductivity of 30 to 60 W/(m·K). Its low hardness (~2 GPa) and low friction coefficient (~0.15) effectively reduce of wear. Unlike graphite, it offers good performances in an oxidising environment. Final Advanced Materials recommends h-BN powders for applications such as dry lubrication, mould release and high-temperature surface protection.
The choice depends on the desired thermal performance for the resin or composite. Aluminium nitride (AlN) powders increase thermal conductivity up to 150 to 200 W/(m·K), but also provide effective electrical insulation. Boron nitride powders (h-BN) increase thermal conductivity up to 40 to 60 W/(m·K) and thermal stability up to 800–900°C in air, providing a balance between conductivity and ease of application. Alumina powders (Al₂O₃), which are more cost-effective, provide a more moderate conductivity of 20 to 35 W/(m·K). Final Advanced Materials recommends adjusting the particle size and the load level to optimise overall performance.
The choice of ceramic powder depends on the wear constraints and working conditions (load, temperature, environment). Alumina powders (Al₂O₃), with a hardness of 15 to 20 GPa and a density of approximately 3.9 g/cm³, provide an excellent abrasion resistance for standard applications.
For more severe applications, silicon carbide (SiC) powders have a higher hardness of 20 to 28 GPa, a thermal conductivity of up to 120 to 180 W/(m·K) and a very effective thermal resistance up to 1,400–1,600°C. Silicon nitride (Si₃N₄) powders, with a hardness of 15 to 18 GPa, stand out for their mechanical and thermal shock resistance. Final Advanced Materials recommends adjusting the particle size and purity to maximise wear resistance.