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Final Advanced Materials offers a full range of high-temperature surface coatings for your purposes: graphite and boron nitride lubricants, protective paints, anti-moisture coatings, silicones and more.
High-temperature lubricants
Boron nitride suspension (in its hexagonal form) has high thermal conductivity and is not impregnable by molten metals. This system is unique in its properties, making it an ideal lubricant for hot parts and tools. It is a release agent and an effective coating for all very hot surfaces. Boron nitride remains effective up to 800°C in air and 1950°C under inert gas, making it a dry lubricant. This product is available as an aerosol or as a suspension.
Graphite is used as a dry lubricant for all anti-seize materials and release agents. It can be used up to 500°C in air and 1500°C under neutral gas or vacuum. This product is available as an aerosol.
High-temperature protective paint
Duralco® 201
Cotronics Duralco® 201 is a layer of aluminium deposited on the surface of metals, which gives them excellent resistance to moisture and saline atmospheres up to 650°C.
Duralco® 230
Cotronics Duralco® 230 paint a layer of stainless steel on the surface of metals, which gives them their stainless steel qualities. This material is made of stainless steel strips, a ceramic binder and water. It provides good corrosion resistance up to 800°C.
Waterproof sealant
A liquid and paste consisting of mixtures of organic and inorganic raw materials, designed to protect against moisture, sources of impregnation, protective layers and finishing. They are excellent anti-moisture varnishes with good chemical resistance, and a high dielectric capacity. They are used to increase resistance to moisture and the dielectric capacity of porous ceramics, to impregnate and reinforce ceramic papers, plates, high-pressure seals, and more.
Cotronics Duraseal® 1529, 1529H, 1529FS and 1529UHT varnishes provide protection from 315 to 980°C.
Protective silicones
Duraseal® 1531
Cotronics® Duraseal® 1531 silicone is a high-temperature resistant sealant that remains flexible even at 350°C. It adheres to metals, glass and ceramics.
Duraseal® 1533
Cotronics® Duraseal® 1533 silicone is a fluid resin that penetrates the smallest spaces. It is used to mould, coat and bond. A good electrical insulator, it is recommended for the repair of connectors, cables, connection boxes and more.
Duralco® 201 HT Coating
Duralco® 230 HT Coating
Resbond® 907TS single-component threadlocker
FAQs that can help you in this category
Final Advanced Materials' Duralco high-temperature paints provide improved resistance to corrosion and adverse weather. The choice of paint will depend on the usage conditions and the material of the medium requiring protection. When the surface has been descaled, derusted, cleaned and degreased you can apply the paint using a brush or spray gun. Specifically: 2 thin layers are preferable to 1 thick layer.
If you require thermal resistance up to 650°C in a humid and/or saline atmosphere, the aluminium-based paint produced Final Advanced Materials offers would be a great solution. However, if the temperature requirement does not exceed 800°C, the Duralco 230 paint, which is stainless steel-loaded, would be more effective.
The ceramic coatings (BN or graphite) offered by Final Advanced Materials have low surface energy, which limits the adhesion of molten metals (Al, Zn, Cu, etc.). They reduce wetting and facilitate stripping. Their thermal stability and their chemical inertia improve the lifetime of the tools used. They also reduce metal contamination and wear of tools.
The coatings' maximum working temperature will depend on the gaseous environment. Temperature stability is limited to 450°C for graphite and 850°C for boron nitride in air or an oxidising atmosphere, and to over 1,000°C in a vacuum or inert gas.
The BN coatings offered by Final Advanced Materials can be applied with a spray, a brush or by dipping. Surface preparation (degreasing, roughness Ra 1.6–3.2 µm) is essential to provide a better adhesion. Drying is carried out at ambient temperature. The typical thickness is 10 to 50 µm. The thinnest possible layers should be used for application. Let each layer dry fully before applying a new one. If a layer is too thick it will have a lower resistance, and a higher risk of delamination or cracking. BN provides excellent thermal stability (as high as 800/900°C in air and 1,800°C in a vacuum or inert gas).
The anti-adhesion coatings offered by Final Advanced Materials provide very effective results in the glass industry. Applying a boron nitride-based product will result in a very low surface energy, an anti-adherent effect, high chemical inertia for silicate glasses, and high temperature resistance (≈ 900°C in air and up to 1,800°C in a controlled atmosphere). This coating will lead to a reduction in adhesion, decreased material transfer, and minimal surface marking.