Silicon Carbide

Silicon Carbide is a rare earth mineral also known as carborundum. It is a semiconductor containing silicon and carbon.

Types of Silicon Carbide

Silicon carbide cannot be considered as a single material, since its material properties depend on the fabrication method. The four main types of silicon carbide are:

  • Reaction bonded silicon nitride (RBSN)
  • Hot pressed silicon nitride (HPSN)
  • Sintered silicon nitrides (SSN)

Key Properties

  • High thermal conductivity
  • Low thermal expansion and excellent thermal shock resistance
  • Low power and switching losses
  • High energy efficiency
  • High operating frequency and temperature (operating up to 200°C junction)
  • Small die size (with the same breakdown voltage)
  • Intrinsic body diode (MOSFET device)
  • Excellent thermal management which reduces cooling requirements
  • Long lifetime

Applications

The most common applications of silicon carbide are the following:

Armor Material:

Bullet resistant vests or body armor typically used for protection in law enforcement, security, and military.

Ceramic Plates:

Production of ceramic plates, thin filament pyrometry, foundry crucibles, and car clutches.

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