Alumina (Aluminum Oxide, Al2O3)
Because alumina is a well-balanced material.
Alumina is the most well-known and most commonly used fine ceramic material. It has the same sintered crystal body as sapphire and ruby. It has been used for decades in electrical components for its high electrical insulation, and is widely used in mechanical parts for its high strength, and corrosion- and wear-resistance.
Alumina is the most well-known fine ceramic material for chemical and physical stability.
- Thermal properties: High heat resistance and high thermal conductivity.
- Mechanical properties: High strength and high hardness.
- Other properties: High electrical insulation, high corrosion resistance and biocompatibility.
Sapphire Optical Windows
Direct bonding of sapphire and alumina without adhesives.
High-purity alumina setters are ideal for quality improvement and cost reduction.
Substrates for Power Modules
High-strength substrates compatible with direct-bonding of copper sheets are suitable for a wide range of power module applications.
Pressure Sensor Components
Kyocera high-precision ceramic technology supports sensors for a wide range of pressure conditions.
Heat Dissipation Structure Ceramic Substrates
Monolithic ceramic structure with no bonding material for long-term reliability.
Vacuum Interrupter Ceramic Tube
Ceramic Insulator Tubes are used in vacuum interrupters for medium voltage switch gear (approx. 6kV to 80kV).
High Voltage-resistant Alumina Ceramic (AH100A)
Possibility of 50% size reduction, with 1.6 times higher voltage resistance than conventional ceramic (based on Kyocera simulation).
Electrical Insulators for Feedthroughs
Ceramic insulators for feedthroughs.
Dimensional precision achieved by machining
When dimensional precision is required for machined ceramics, Kyocera is capable of achieving the tolerances as shown in the table below.
If greater tolerances are required, please consult us.
MACHINING DIMENSIONAL PRECISION
(Data are in mm unless otherwise specified)
1.Ground ceramic blocks and plates
2.Round and Square Bars
PRECISION MACHINED PRODUCTS
Ultra-precision is possible with Kyocera's unique techniques.
Precision machining is affected by shape and material.
Some practical examples are shown in the table below.
* Surface roughness depends on the material. The data shown hear indicates where alumina is used.
* The values are typical material properties and may vary according to products configuration and manufacturing process. For more details, Please feel free to contact us.
* 1: All values for apparent density and bulk density are the same, except for A482R which lists apparent density only.