- Developed based on the best technology
and state-of-the-art equipment
- Fine Ceramics
- Over the past 50 years, KCC has been leading the way in the development of Korea’s industrial and construction materials and has been developing fine ceramic products and state-of-the-art inorganic new materials based on its accumulated experience and material technology. Thereby becoming the unrivalled leader in the field of electrical/electronic insulation materials.
KCC produces DCB (Direct Copper Bonding) substrates, essential materials for power modules, based on its ceramic substrate tape casting technology. KCC has a variety of ceramic substrate technologies, including the DCB substrate technology that uses alumina (Al2O3) and AlN, and is concentrating its efforts on technological development that ensures customer satisfaction. Above all, it has been leading the way in the field of electrical/electronic materials with its product quality and competitiveness thanks to a manufacturing process that takes raw materials and yields finished products.
- IGBT(Insulated Gate Bipolar Transistor) Module
- Diode Module
- SCRs, Thyristors Module
- IPM(Intelligent Power Module)
DCB substrate is a directly bonded material composed of ceramic substrate (AI2O3 or AIN) and copper which are tightly joined together through hypo-eutectic process.
- High Thermal Conductivity
- Low Thermal Expansion
- High Strength
- High Wettability for solder
: ABS, Power Steering, DC/DC Converter, LED lighting, Ignition Control
: IGBT, MOSFET, Thyristor module, Solid-state-relays, Power transistors, Diode
: Air-conditions, Peltier coolers
: LED displays, Welding Machine
: Laser, Power supply for satelites and aircrafts
: Local power generation, Electric Vehicle, Traction control system, Photovoltaic units, Wind power
PC / IT
: Power supply, UPS
White substrate refers to ceramic substrate(AI2O3 or AIN) which has a high thermal conductivity that results in rapid radiation of heat, high beat-resistance and high impact strength which can withstand a sudden generation of heat.
- High Flexural Strength
- High Thermal Conductivity
- Low Dielectric Constant
- Low Surface Roughness
- Resistor substrate for Communication area
- Thermal Print Head
- Image Sensor Head
- Power Module
Available Ceramic Type/Thickness
Alumina (96%) AI2O3
: 0.25mm, 0.32mm, 0.38mm, 0.50mm, 0.63mm, 1.00mm
Aluminum Nitride AIN
: 0.31mm, 0.38mm, 0.63mm, 1.00mm
|(±7 %, NLT ±0.05)|
|Size||㎜(inch)||Max. 140 X 190(5.5 X 7.5)||On Request|
|Mechanical||Flexural Strength||MPa||420||ASTM F417|
|Characteristics||Dielectric Strength||㎸/㎜||26||ASTM D149|
|Thermal||Thermal Conductivity||W/mK||>25||ASTM C480|
|Characteristics||*Coefficient of Thermal Expansion*||10-6/℃||6.8(20-600℃)||ASTM D257|
KCC has taken the lead in developing materials for construction and industries over the last 30 years. Based on its accumulated experience and technologies in inorganic materials, KCC has developed and supplied fine ceramics, cutting- edge inorganic materials, by applying and advancing its technologies in organic materials.
With the introduction of the latest equipment and technologies, KCC established an effective automation process and applied strict quality control. KCC promises to do its best to promptly supply the best-quality metalized ceramics to its customers and assure thorough post-management to improve product quality.
- Products Technologies
- Ceramic tubes for vacuum circuit breakers
- Magnetron cathode & antenna
- Surge arrester tubes
- Rectifier containers
- Metal-ceramic assemblies
- Manufacturing Technologies
- Screen printing
- High temperature glazing
- Electroytic & electroless plating
- Brazed assemblies
|Units||AM 94||AM 995|
|Coeff. of thermal||％/℃||8 X 10-6|
|Max. use temp||℃||1600||1700|
|Bonding strength||㎏/㎠||975 ↑|
|Leak test of||atm ㏄/sec||5 X 10-10 ↓|
|Thermal cycle test||No crachs or failure after 10 cycle|
|<-30℃ (3hr), room temp(1hr),|
|100℃(3hr), room temp(1hr)>|
|Thermal shock test||No cracks or failure after 3 cycle|
- Brazing Layer (Ag-Cu)
- Ni Layer
- Metallizing Layer (No. Mn-0)
Normally, when a rate current runs in a VCB (vacuum circuit breaker), contact materials are attached to each other. However, in the case of a sudden surge of current, they become automatically separated through detection by an electric sensor. During this stage, the current generates an arc that that could cause a fire or severe damage. The ceramic cylinder in a vacuum interrupter plays a vital role in preventing such accidents.
Ceramics for VI come in the shape of tubes. But depending on the design of the external and internal surfaces of the ceramic cylinder’s body, they can be classified into “simple” or “shaded” types and “step” or “grooved” types.
As a component used in vacuum interrupters through the bonding of the two different materials, these are ceramics that offer excellent insulation and excellent conductivity. Ceramics for VI also offer high heat resistance, voltage resistance, shock resistance and vacuum maintenance.
Magnetron converts the supplied power in microwave ovens and industrial dryers to electromagnetic wave in the microwave (high-frequency microwave) unit, and it generates thermal energy by the friction and vibration of water molecules. Ceramics for MGT maintain air tightness and insulation in the magnetron.
- It is a small product. One set of magnetron consists of one cathode and one antenna. A spacer is also used depending on the structure of the magnetron.
Ceramics for MGT are manufactured using high-grade assembling technology and vacuum technology and are installed in magnetrons using such metals as Mo-Mn and Ni. They offer thermal shock resistance, airtightness and insulation, which can endure high frequencies of 0.5~2.0 KW and an oscillation frequency of 2,450 MHz.
Ceramics for power tubes are used in high-frequency heating devices and sound-frequency amplification devices. They are also used in UHF/VHF TV for broadcasting, FM/AM shortwave radios, X-ray machines, radars for the defense industry, and industrial RF welders for plastic sealing. The power tube is also called the power grid tube, ionic tube, electron tube, launching tube, and electron tube.
It has various shapes, such as the tube type, disk type, cone type and so on.
It is used in various power tubes that handle voltages of up to 200 KV, frequencies of up to 3000 MHz, power of up to 500 KW and magnetrons that generate frequencies of over 2.0KW. It is also installed in electronic devices in combination with such metals as Mo Mn and Ni. It offers good thermal shock resistance, air tightness, and insulation.
SCR housing ceramics are used in silicon controlled rectifier, which are sued to change an alternating current to direct current and to offer protection from sudden surges in current.
It is available in flat, stud and cone types.
The vital features of SCR ceramics lie in its abilities to dissipate an arc generated during the control of high voltage in the rectifier and to withstand thermal shocks, their high electricity resistance and to maintain mechanical strength and vacuum tightness.
KCC supplies parts, manufactured through the unitization of a variety of ceramics and metal parts, which are capable of shortening the manufacturing process and cutting unit cost through the development of unitized module products based on KCC’s core technologies, such as metalizing and brazing technologies. KCC also supplies top-notch assembly products through its own production facilities that manufacture a variety of metal parts, including its state-of-the-art high vacuum brazing facilities and continuous brazing facilities.
- SCR housing
- High-power receptacles
- Insulating rings & cylinders
- Power switches
- X-ray tubes
|Bulk Density||g/㎤||ASTM C20-83||3.7||3.8||3.8||3.9|
|Water Absorption||％||ASTM C373-72||0||0||0||0|
|Average Crystallion Size||㎛||ASTM E112-88||4||3||3||4|
|Flexura Strength(20℃)||㎫||ASTM F417-78||350||370||370||380|
|Elastic Modulus||㎬||ASTM C773-83||290||310||340||360|
|Poisson's Ratio||ASTM C773-83||0.22||0.22||0.22||0.22|
|Compressive Strength||㎫||ASTM C773-83||2100||2100||2500|
|Thermal Conductivity(20℃)||W/mK||ASTM C408-82||21||24||25||28|
|Coefficient of Thermal||x10-6/℃||ASTM C372-81||8||708||7.8||8.1|
|Specific Heat||㎈/g℃||ASTM C351-82||0.2||0.2||0.2||0.2|
|Thermal Shock Resistance||℃||200||200||200||200|
|Max. Use Temperature||℃||1600||1600||1600||1650|
|Dilectric Strength||KV/MM||ASTM D116-76||≥12||≥15||≥17||≥17|
|Dielectic Constance(1MHZ, 25℃)||ASTM D150-81||9.2||9.6||9.7||9.7|
|Dielectric Loss(tan delta||ASTM D150-81||0.0004||0.0003||0.0002||0.0002|
|Volume Resisivity(25℃)||Ω ㎠/㎝||ASTM D1829-66||>1014||>1014||>1014||>1014|