Black alumina is mostly used in semiconductor integrated circuits and electronic products. This is mainly because most electronic products have high photosensitivity and require a strong light-shielding property of the packaging materials. Black alumina ceramics are often made into ceramic substrates, ceramic packages, ceramic hair straighteners, ceramic heaters.


  • Excellent insulation
  • Low expansion coefficient
  • High thermal conductivity
  • High mechanical strength
  • Protection from light
  • Wear resistance
  • Low dielectric loss

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