Sialon Ceramics
For the molten aluminium Industry since 1986
SiAlON ceramics are a specialist class of high-temperature refractory materials, with high strength at ambient and high temperatures, good thermal shock resistance and exceptional resistance to wetting or corrosion by molten non-ferrous metals, compared to other refractory materials such as, for example, alumina. A typical use is with handling of molten aluminium. They also are exceptionally corrosion resistant and hence are also used in the chemical industry. SiAlONs also have high wear resistance, low thermal expansion and good oxidation resistance up to above ~1000 °C.
Since 1986, we have been producing high quality Sialon products from different grades to the molten aluminium, zinc and other non-ferrous industries.
Silicon Nitride, syalon or Sialon are beta ceramics which are sintered under high temperatures at 1,800 degrees celsius and can be made in almost any shape.
As Sialon ceramics contain approximately 40% of Aluminium Oxide, they have excellent non-wetting properties when in contact with molten aluminium.
Commercial Sialon was introduced by our company in 1986 to replace ceramic coated cast iron thermocouple protection tubes
The Sialon shop is a new online shop where you can get your free online request for quotation for Heater Tubes, Immersion Heaters, Thermocouple Protection Tubes, Fluxing Pipe, Rotors and Stators, please visit our shop!
30 years experience
Highest impact fracture toughness
Ultrasonic degassing
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What We Offer
Sialon Technical ceramics
Ultrasonic degassing of molten aluminium
Ultrasonic Micro-alloying
How Are Sialon Ceramics Manufactured?
Sialon ceramics are manufactured by combining a mixture of raw materials including silicon nitride, alumina, aluminium nitride and silica. along with the oxide of a rare earth element, such as yttrium. At times, the silicon is replaced by aluminium with the corresponding atomic replacement of nitrogen by oxygen; this is done in order to satisfy valency requirements. The resulting 'solution' has superior properties, both to the original pure solvent, syalon and to silicon nitride or Si3N4.
Other Applications
Other applications include use in the chemical, process, oil and gas industries due to the excellent chemical stability, corrosion and wear resistance properties. In metal forming, Sialon ceramics are used as cutting tools for machining chill cast iron and to braze and weld fixtures and pins, particularly for resistance welding.
Smooth Finish of Products
Our heater tubes, thermocouple protection tubes, riser tubes, Westofen dosing tubes, ladles, hooks, extrusion dies, cutting tools and welding pins have excellent non-wetting properties and a smooth surface.