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 Advanced technical ceramic components manufacture, ceramic materials, ceramic powders and ceramic textiles.

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Thermic Edge LTD.
30 Brunel Road,
St. Leonards on Sea,
East Sussex
TN38 9RT
+44(0)1424 850811
MacorShapalBoron NitridePyrolytic BNOxidesNitridesCarbides

 Advanced Technical Ceramic Components, Materials, Powders and Ceramic Textiles

Ceramisis have a production facility dedicated to advance technical ceramic component manufacture, in a wide range of machinable and non machinable technical ceramics. We can also supply machinable ceramics such as Macor, Shapal, Alumina (96% machinable) and Boron Nitride, in rod or plate form, for customers to produce their own technical ceramic components. Technical ceramics are ideal for use in UHV Thin Film Vacuum Deposition and Etch systems due to their low outgassing properties.

Ceramisis also supply Ceramic and graphite components produced by Chemical Vapour Deposition (CVD), such as Solid Pyrolytic graphite (PG) and solid Pyrolytic Boron Nitride (PBN), and can also produce composite products made from these to materials combined, such as heater elements. We produce components such as boats, crucibles and heaters, which are also well very suited to Ultra High Vacuum (UHV) applications due to their very high purity, low outgassing and high operating temperatures.

Components produced from non machinable ceramics such as Alumina, Zirconia, Aluminium Nitride, Silicon Nitride, Silicon Carbide and Quartz are moulded to size then sintered / fired. After firing only minor machining operations are possible.

With machinable ceramics such as Macor, Shapal, Boron Nitride and Machinable 96% Alumina, components are produced using conventional machining techniques from stock bar, rod and plate. No post firing is required after the components are machined.

CVD materials such as Pyrolytic Graphite (PG) and Pyrolytic Boron Nitride (PBN) are produced at very high temperatures by depositing material onto a substrate or mandrel. Post machining is possible although the deposited thickness of the material is normally only a few millimetres.

Ceramisis also supply a complete range of high temperature asbestos free ceramic textiles, in cloth, rope, sleeve, blanket and yarn form. We can offer the well known Dalfratex range, or our own cost effective high quality Ceramitex range.

A brief description of our most popular technical ceramic materials follows. Please click the relevant tab above for more detail and specifications.

Machinable Ceramics

Macor- is a machinable glass ceramic and easily machined with conventional metal working tools. It is an ideal prototyping material for use in a vacuum environment at low or high temperature. Continuous use temperature is 800 C and the coefficient of thermal expansion matches most metals.

Shapal- is machined with diamond tooling and has high mechanical strength and high thermal conductivity. It has very good resistance to thermal shock and is based on the worlds first translucent aluminium nitride ceramic. Shapal ceramic unique characteristics make it suitable for a wide range of applications in the vacuum and nuclear industries. It has zero porosity, low our gassing rates, is not affected by most etch plasmas or ionizing radiation and easily joins to its self or other materials. 

Boron Nitride- Boron nitride is a unique material. it offers outstanding thermal conductivity, excellent dielectric strength, very good thermal shock resistance, is self lubricating and is easily Machinable. This material is an advanced synthetic ceramic available in powder, solid, liquid and aerosol spray forms. In an oxidizing atmosphere it can be used up to 900C. However, in an inert atmosphere some grades can be used as high as 3000C. Grades are available with a very low porosity and ultra high strength for use in semiconductor processing and mechanical applications.

Non-Machinable Ceramics

Alumina, Zirconia- Alumina and zirconia are hard wearing materials used for many applications. Once fired and sintered, they can only be machined using diamond-grinding methods. Alumina's combination of hardness, high temperature operation and good electrical insulation makes it useful for a wide range of applications. Zirconia is similar to alumina in many of its properties but offers significant improvement in fracture toughness. It is particularly useful in applications where the mechanical strength of alumina is not sufficient.

Aluminium Nitride, Silicon Nitride- Aluminium nitride has very high thermal conductivity, high mechanical strength and combined with its excellent electrical insulation properties is an ideal heat sink material for many electrical and electronic applications. Silicon nitride is an extremely hard material and is very useful for applications in which physical wear is of great importance. Silicon nitride also has very good thermal shock characteristics.

Silicon Carbide- is a very hard wearing material, again requiring diamond-grinding methods to process once fired. Although not exclusively, carbides are used mainly for applications in which physical wear is a major consideration. They are amongst the hardest materials available.


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