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Advanced Materials

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Metallized Ceramics with excellent electrical insulation and hermetic sealing: Metalized Ceramics are a core material used in electric/electronic insulation components, whereby ceramic and metal are bonded by coating the metal onto the surface of alumina ceramic (AI₂O₃) to secure air-tightness.

Ceramic Substrates are the core heat dissipation materials of power modules.: By bonding copper onto the ceramic board, Ceramic Substrates are used as power module substrates. Since copper can be bonded onto various types of ceramics to provide strength and thermal conductivity to varied levels of customers' needs, Ceramic Substrates are essential materials for power modules in automotive, industrial, and home appliances.

AM
(Alumina Metalizing)

Metalized Ceramics

Ceramic and metal are bonded by coating the metal onto the surface of AI₂O₃. They are used as a core material in electronic insulation components.

Brazed Ceramics

Metalized Ceramics and metal are bonded in the vacuum by using special tools for thermal processing (around 800℃).

KCC establishes an efficient, automated process by applying the cutting-edge equipment and technology, and produces Metalized Ceramics based on the integrated quality management system. We develop integrated module products using our core technologies, metalizing and brazing technologies, and supplying parts by integrating ceramic and various metal parts to help customers shorten processes and reduce costs.

Moreover, we supply the best assembly products from state-of-the-art high vacuum brazing facilities, continuous brazing facilities, and in-house processing facilities for various metal parts. Based on the ceramic substrate molding (tape casting) technology, we produce ceramic substrate products, the core materials of power modules, and DCB and AMB substrates made from Alumina (AI₂O₃), Aluminum Nitride (AIN), and Silicon Nitride (Si3N5). We have a variety of ceramic substrate technologies. In particular, we have a vertically integrated process from raw materials to finished products, leading the market for electrical/electronic ceramic materials with both superior quality and competitiveness

Ceramic for vacuum interrupter (VI)

VI (Vacuum Interrupter) is a component applied to the breaking part of a vacuum circuit breaker, a switch cutting off circuits when abnormal currents including high voltage overcurrent or short circuit occur in power plants, transmission and substation facilities such as chemical, steel, plants, and construction facilities. It is an essential part for power supply. Vacuum is used as an insulating medium, and a ceramic tube with excellent bonding performance, tissue density, and vacuum tightness is applied as a housing material.
KCC is the only ceramic manufacturer for vacuum circuit breakers in Korea and manufactures ceramic insulators using AM (Alumina Metalizing) technology. In particular, as the application of SF6-free vacuum circuit breakers not using SF6 gas which is the main culprit of the global warming increases, we keep pace with the market demand for environmentally friendly products. It is in the spotlight as a key component of the future electric power business considering eco-friendliness and various customers' needs.

Direct Copper Bonding (DCB) boards used as a power module board

A power module is a power semiconductor module converting the form of electricity (direct current, alternating current), voltage, and current into an appropriate form and size required by the system. It is mainly applied to automotive, industrial, and home appliances. Since power modules are high-power, ceramics with excellent heat dissipation characteristics and reliability are used as the substrates, and various requirements are considered by each industry.
KCC uses DCB (Direct Copper Bonding) and AMB (Active Metal Brazing) bonding technologies to bond copper to various ceramics including (AI₂O₃), ZTA, AlN, H-AlN, and Si3N5 to create products with strength and heat dissipation performance meeting customers' needs.

Application example

Ceramic for Power Module

Ceramic for Vacuum Interrupter

The list of major products

SI3N4 AMB

AlN AMB

H-AlN AMB

AlN DCB

ZTA DCB

Al2O3 DCB

VI METZ

BC BRAZED CERAMIC

PT POWER TUBE

Ceramic boards for automotive power module

The demand for automotive power modules increases due to the enhanced functionality of automobiles, the rising proportion of electrical components installed in vehicles, and the full-scale expansion of the EV/HEV market.
In particular, a significant market growth is expected for SiC (Silicon Carbide) power semiconductors which have excellent power conversion efficiency, durability, and stability even in extreme environments of high temperature and high voltage.
High-reliability substrates such as Si3N5 AMB, H-AlN DCB, and ZTA DCB are mainly used in automotive power modules.

Application example

DCB board applied as a board for power module

The list of major products

SI3N4 AMB

AlN AMB

H-AlN AMB

AlN DCB

ZTA DCB

Al2O3 DCB

Major laws /regulations	Major details and guidelines
Fair Trade Act	The prohibition of unfair trade practices: One shall not use one’s superior position in trade to give disadvantages to the suppliers(Refusal of transaction, discriminatory treatment, forced trade, abuse of dominant position, constraint trade and the act of maintaining the resale price). The prohibition of abusing one’s dominant position in the market: In case of a dominant market player, one shall neither determine, maintain or change the price or payment for the services unfairly nor interfere in the business activities of another business or the entrance of a new competitor. One shall neither do trades to unfairly eliminate the competitors nor behave in a way that may harm the interests of the consumers. The prohibition of unfair common action(collusion): One shall not agree on the matters of restricting the competition such as restricting the competitor, price, production/sales quantity, trading area/opposite party, etc. One shall not exchange sensitive information that may have an impact on these matters directly or indirectly. The prohibition of an unfair common action(bid rigging): In the bidding process, one shall not discuss/agree on a prospective successful bidder and the bidding price with another party prior to the bidding. One shall not share the bidding information with the competitors. The control of suppressing the concentration of the economic power: One shall avoid unfair internal transactions among affiliates. In case of performing internal transactions, one shall obtain the approval of the Sustainability Management Committee in advance.
Subcontracting Act	One shall comply with the duty to prepare, issue and preserve the agreement. One shall perform an unfair decision on the pricing, delayed payment, unfair terms, unfair reductions, unfair order cancellation, unfair refusal of receipt, and unfair return. One shall not request one’s suppliers to provide the technical data. If necessary, the confidentiality agreement shall be concluded, and the data shall not be used for other purposes not stated in the agreement.
FAIR AGENCY TRANSACTIONS ACT	One shall observe the duty to prepare, issue and preserve the agreement. One shall not conduct forcing purchase, profit and sales targets, inflicting disadvantages, or interfering with management activities.
Other laws	One shall observe the duties and prohibited matters to be implemented by business in compliance with the Act on the Regulation of Terms & Conditions, Act on Fair Labeling & Advertising, Framework Act on Consumers, and Product Liability Act.

Purpose			Wall						Beam/pole	Floor	Roof/roof truss
Purpose			Exterior wall			Interior wall
Classification	Size story/ maximum height (m)		Bearing wall	Non-bearing wall		Bearing wall	Non-bearing wall
Classification	Size story/ maximum height (m)		Bearing wall	Concern for combustion	No concern for combustion	Bearing wall	Partition wall	Shaft-seal compartment wall
General facilities	12/50	above	3	1	1/2	3	2	2	3	2	1
	12/50	or below	2	1	1/2	2	1.5	1.5	2	2	1/2
	4/20 or below		1	1	1/2	1	1	1	1	1	1/2
Residential facilities	12/50	above	2	1	1/2	2	2	2	3	2	1
	12/50	or below	2	1	1/2	2	1	1	2	2	1/2
	4/20 or below		1	1	1/2	1	1	1	1	1	1/2
Industrial facilities	12/50	above	2	1.5	1/2	2	1.5	1.5	3	2	1
	12/50	or below	2	1	1/2	2	1	1	2	2	1/2
	4/20 or below		1	1	1/2	1	1	1	1	1	1/2

Grade	Grade standard (Rw+C)
1^st	63dB ≤ Rw+C and boundary walls not shared between households
2^st	58dB ≤ Rw+C < 63dB
3^st	53dB ≤ Rw+C < 58dB
4^st	48dB ≤ Rw+C < 53dB

Walls	Absorbers (Glass Wool, Mineral Wool)	Increase the density of a gypsum board	Increase the thickness of a stud and gypsum board	Use T-Silent-Stud System
Block the sound path by separating studs from each other.		Regular Gypsum Board< Perforated Sound Absorption Board
Around 10dB is reduced.	About 6dB is reduced.	About 2-3dB is reduced.	About 2-3dB is reduced.	About 7-15dB is reduced.

Levels	Awareness level
1dB	Felt no change
3dB	Felt a change
5dB	Surely felt changes
10dB	2 times greater changes are felt
20dB	4 times greater changes are felt

The impact of noise on the human body
Noise	Noise source	Impact on the human body
30dB	Wall clock ticking sound	Comfortable
35dB	Quiet park	Have almost no impact on sleep
50dB	Quiet office	Breathing and pulse rate increased; sleep quality is degraded
70dB	Phone bell ring	Hearing loss is started
90dB	Factory noise	Urine volume increased; had hearing loss