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Carbure de Silicium (SiC)
Silicon carbide (SiC) ceramic is a high-performance material known for its extreme hardness, exceptional abrasion resistance and high thermal stability. It is often used in demanding environments where materials must withstand high temperatures, intense friction and corrosive chemicals. Thanks to its excellent thermal conductivity and low thermal expansion, SiC is particularly resistant to thermal shock, making it ideal for furnace components, refractories and high-performance engine parts. In addition, its lightness and rigidity make it a preferred choice in the aerospace industry, power electronics and precision applications, such as telescope mirrors..
However, SiC is difficult to manufacture and machine due to its extreme hardness, which increases production costs and limits its applications to sectors where its specific properties are required. It is also fragile, with low toughness, which makes it susceptible to fractures under direct mechanical impact. Despite this, its thermal, chemical and mechanical performance make it a valuable material for advanced industrial applications requiring exceptional strength.
Composition
| Component | Concentration | Comment |
|---|---|---|
| SiC (silicon carbide) | ≥ 99 % | Main component, responsible for hardness and thermal conductivity. |
| Fe (iron) | < 0,02 % | common impurity, can influence color and thermal properties. |
| Al (aluminum) | < 0,02 % | Trace that can reinforce certain mechanical properties |
| C (free carbon) | < 0,5 % | Present in very small quantities to reinforce thermal stability |
Typical properties
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