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Hollow and 3D Structural Technologies
in Fine Ceramics

3D structures realized by monolithic bonding without adhesive

3D structures (hollow structures) can be manufactured using ceramics without the use of adhesives. This is because Fine Ceramics exhibit exceptional resistance to high heat, chemicals, and plasma, and can be utilized in harsh environments where high temperature and corrosive gases and fluids flow through the internal channel.

Complex shaped ceramic monolithic products (G-bonding)

  • Complex shaped ceramic monolithic products (G-bonding)
  • Complex shaped ceramic monolithic products (G-bonding)
  • Complex shaped ceramic monolithic products (G-bonding)

Structures with hollow channels or bent pipes, which could not be realized by conventional machining, can be manufactured using Fine Ceramics. Because the bonding interface is integrated, there is no loss in strength or thermal conductivity, and it makes dense bonding with highly reliable accuracy possible.

Dense bonding area

Ultrasonic testing image illustrates a hollow channel structure

Bonding area is dense

Transparent parts with exceptional resistance against plasma and chemicals (Sapphire monolithic bonding)

  • Transparent parts with exceptional resistance against plasma and chemicals (Sapphire monolithic bonding)
  • Transparent parts with exceptional resistance against plasma and chemicals (Sapphire monolithic bonding)

Sapphire monolithic bonding without adhesives maintains exceptional resistance to plasma, chemicals and heat, so it maintains mechanical strength even in a plasma or harsh chemical environment. In addition, since the joint surface cannot be seen, it can be used where transparency is required.

  • Chemical resistance of Sapphire

    Compared to Quartz and Alumina, Sapphire has superior chemical resistance.

    Graph showing the reduction per 1 cm3 when immersed in each chemical for 24 hours.

    Complex shaped ceramic monolithic products (G-bonding)
  • Light transmission characteristics of Sapphire

    Sapphire has consistent transmittance over a wide wavelength range.

    Complex shaped ceramic monolithic products (G-bonding)
* Data above are reference values and do not guarantee the characteristics of the product.

Sapphire and Alumina bonded bodies form hermetic seals that are light transparent

  • Sapphire and Alumina bonded bodies form hermetic seals that are light transparent
  • Sapphire and Alumina bonded bodies form hermetic seals that are light transparent

Sapphire and Alumina have high bonding strength and can be used where hermeticity is required. In addition, since no adhesive is used, the generation of impurities and particles around the bonded area is reduced.
Since Sapphire and Alumina can be bonded, only Sapphire can be used in areas where transparency is required.

If you would like to know more about
Kyocera's hollow and 3D structural technologies,
please feel free to contact us for more details.