清水商会 List of Products and Services

SiC, which has high hardness and excellent heat resistance, is a gray-black material that can maintain its mechanical strength up to high temperatures. Due to its excellent heat resistance at high temperatures, it has gained attention in recent years as a semiconductor material and related materials. It is also characterized by its very good corrosion resistance compared to other ceramic materials. <Features> - Excellent durability and can maintain mechanical strength up to high temperatures. - High hardness and excellent wear resistance. - Low thermal expansion coefficient, excellent thermal conductivity, and thermal shock resistance. - Excellent corrosion resistance. - Low toughness and brittle nature.

• Fine Ceramics

Alumina refers to aluminum oxide. Due to its high versatility and relatively low cost, it is the most commonly used representative material among ceramics. It has high electrical insulation properties and excels in hardness, compressive strength, wear resistance, and chemical resistance, making it widely used as a mechanical material. Our company primarily uses 99.5% alumina, but we also offer 96% depending on the application. Metallization processing is also possible for alumina substrates. Please contact us for more details. <Features> - A highly versatile material among ceramics - Widely used as a mechanical material due to its excellent hardness, compressive strength, wear resistance, and chemical resistance - High electrical insulation properties and relatively low cost - High heat resistance (approximately 1500°C) and relatively high thermal conductivity. However, it has a high thermal expansion coefficient and is weak against thermal shock.

• Fine Ceramics

BN is made from a white powder with a crystal structure similar to graphite. Therefore, it has similarities to graphite in terms of heat resistance, thermal shock resistance, lubricity, machinability, and chemical stability. However, while graphite is dielectric, BN has high electrical insulation properties and is distinctly white in color. Regarding processing, a tolerance of ±0.01 is possible.

• Fine Ceramics

It is characterized by excellent mechanical properties such as bending strength, and it is also resistant to rapid heating and cooling, making it less prone to cracking, chipping, and breaking. Since it can be used at high temperatures, using it for welding jigs is expected to result in a longer lifespan compared to other ceramics. <Features> - A material with excellent thermal shock resistance that maintains strength even at high temperatures. - Low thermal expansion rate and extremely high thermal shock resistance. - Excellent mechanical strength, toughness, wear resistance, and corrosion resistance. *For more details, please refer to the catalog or website, or feel free to contact us.

• Fine Ceramics
• CVD Equipment
• Heating device

Among engineering ceramics, this is the ceramic with the highest strength and toughness at room temperature. It is also characterized by low thermal conductivity and high thermal insulation. Compared to other ceramic materials, it has a high thermal expansion rate and excels in hardness, fracture toughness, corrosion resistance, and surface smoothness. Due to its high toughness and strength at room temperature, it is used in knives, scissors, and kitchen knives. <Features> - Extremely high fracture toughness, with significant bending strength and compressive strength at room temperature. - Low thermal conductivity, resulting in high thermal insulation. - Excellent surface smoothness. *For more details, please refer to the catalog or our website, or feel free to contact us.

• Fine Ceramics
• Mounter
• Semiconductor inspection/test equipment

Aluminum nitride is a nitride of aluminum and is a material with very high thermal conductivity (approximately 170 W/(m·K), which is about 5-8 times higher than alumina). It is used in heat dissipation components and thermal uniformity components. It is also characterized by its high electrical insulation compared to other ceramics. Mirror finishing is also possible. <Features> - High thermal conductivity and thermal emissivity, with excellent thermal uniformity - Strong against thermal shock, capable of withstanding rapid heating and cooling - Low thermal expansion matched to silicon, preventing wafer deformation due to temperature changes and reducing particle generation caused by film peeling - High corrosion resistance to fluorine-based gases - Excellent plasma resistance *For more details, please refer to the catalog or website, or feel free to contact us.

• Fine Ceramics
• LED Module
• Ceramic Heater

By collaborating with over 100 partner factories, we achieve short delivery times and high precision for the products you desire. While inquiring about your intended use, we also propose appropriate processing methods and materials. Even with hand-drawn sketches, we can create 3D drawings and manufacture them. From prototypes to mass-produced items, please feel free to contact us first. *For more details, please download the catalog or visit our website.

• Ceramics
• Heating device
• Sensors

As the main methods of metallization processing, we can accommodate thick film pattern formation through screen printing, and thin film pattern formation through vacuum deposition, plating, photolithography, and etching. In addition to pattern formation, we can also accommodate VIA filling, resistor formation, and through-hole formation. We will propose the optimal metallization processing to achieve the desired functions and performance. <Processing Specification Examples> - Thin Film Metallization Processing Accuracy: Line/Space = 30μm/30μm Processing Method: Vacuum deposition (sputtering or evaporation) + plating + photolithography (resist formation, exposure, development) + etching Other Processing: Through-hole formation (Φ0.1mm and above) / resistor formation - Thick Film Metallization Processing Accuracy: Line/Space = 100μm/100μm Processing Method: Screen printing Other Processing: VIA filling / resistor formation *For more details, please refer to the catalog or website, or feel free to contact us.

• Sensors
• High frequency/microwave parts
• Resistors

Makore, which excels in quick cutting and allows for complex shapes and precision machining, is also a material that is less prone to chipping due to its material properties. Because it has no pores, it demonstrates stable performance even in a vacuum. It can also be used with carbide and high-speed steel tools. There is a track record of processing fine holes with a diameter of 0.1 mm. Mirror finishing is also possible. <Features> - Excellent vacuum properties. Due to its non-porous nature, it has low gas permeability and outgassing, zero water absorption, making it suitable as a vacuum material. - Helium permeability is better than Pyrex. - Excellent electrical insulation. - Usable at temperatures from -273 to 1000°C (continuous use at 800°C, 800°C in high vacuum). - Thermal insulation, non-magnetic. *For more details, please refer to the catalog or website, or feel free to contact us.

• Ceramics

Shaparl Hi M Soft," a composite sintered body of aluminum nitride and boron nitride, is a high-performance machinable ceramic with high thermal conductivity and thermal shock resistance. It is also suitable for machining, offering excellent machinability that allows for the processing of complex shapes and high-precision machining. We have processing achievements such as fine holes of Φ0.08, Φ0.1, and surface roughness of Ra0.2. <Features> - Excellent vacuum properties - Low thermal expansion rate (4.8×10^-6/°C) - High thermal conductivity (approximately 92 W/m·K) - High strength (300 MPa) - Excellent electrical insulation properties - Resistant to wetting by molten metals *For more details, please refer to the catalog or our website, or feel free to contact us.

• Ceramics