Physical Properties
Physical Properties

Physical Properties

Chemical Properties

In an oxygen reaction, when the temperature hits 1300 Celsius, a protective layer appears on these crystal surface. When the protective layers become thicker, the inside of silicon carbide becomes even stronger.

As far as compound resistance, alkalinity and acidity are concerned, silicon carbide comes with excellent acid resistance. However, it does not have good enough alkaline resistance.

Physical Properties

From the density point of view, almost all types of silicon carbide crystals are the same. When it comes to hardness, this material stands at it 9.5 Mohs. Besides, the Knoop hardness level is between 2670 and 2815 kg/mm. The good thing is that this level of hardness is much higher than most of the abrasive materials, such as diamond.

The thermal shock resistance and thermal conductivity are also very good. Since the thermal expansion parameters are not that impressive, SiC ceramic is one of the best refractory materials.

Electrical Properties

At constant temperature, commercial silicon carbide ceramic serves as a type of semiconductor. The internal resistance of this material comes down when the temperature increases. Besides, the conductivity of this material is different when it comes to impurities.

Good Hydrophilicity

When it comes to hydrophilicity, silicon carbide ceramic features strong covalent bonds. Based on the electronegativity calculations of Pauling, the ionic property of this material is just 12%. So, we can say that this material features not-so-good wear resistance, big elastic modulus, and a high level of hardness.

Long story short, this was an overview of silicon carbide ceramic. Hopefully, this overview will help you get a deeper understanding of this material. Since this material has a lot of great features, it is used in a wide range of industries.