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INNOVACERA Universally Applicable Ceramic Metallization

Innovacera metallizes precision ceramic for military, medical, and aerospace applications. Our metallization creates a strong and robust bond to many different ceramic bodies and has nearly universal applicability for ceramic to metal brazing.
Our ceramic metallization process uses proprietary thick film molybdenum/manganese and molybdenum/manganese/tungsten paints as the base layer on a ceramic substrate. To prevent oxidation and to improve wettability after the metallization paint is sintered into the ceramic at high temperature, it is plated using either electroless or electrolytic plating or nickel oxide paint.

Metallized Ceramic Insulators

With more than ten decades of industry experience, the Innovacera team has expertise in a variety of application methods and is capable of metallizing on flat, cylindrical, and complex ceramic bodies, from prototyping through production.
Ceramic Materials:
Aluminum Oxide (95%, 99%)
Beryllium Oxide (99%-99.5%)
Metalized Ceramic Benefits：
Strong, robust bond
Minimal substrate deformation
Universal applicability for ceramic metal joining
High processing speeds
Uniform coating, thickness, and density

Cooling in Power Electronics

Power electronics devices such as MOSFETs, GTOs, IGBTs, IGCTs etc. are now widely used to efficiently deliver electrical power in home electronics, industrial drives, telecommunication, transport, electric grid and numerous other applications.

ALN-PLATE

In power electronics, chip-on-heat-sink technology makes it possible to reduce thermal resistance between the heat source (chip) and the heat-sink by (depending on the design) up to a quarter of the value compared to conventional cooling system design.
Thus, ceramic heat-sinks make it possible to achieve power densities that were previously unattainable.

ceramic-heat-sinks

The best material of ceramic heat-sinks is aluminium nitride which thermal conductivity is above 170W/mk, below is the material properties.
If you have more questions, pls consult with us.

Properties		Value
Bulk Density(g/cm3)		>=3.3
Water Absorption		0
Flexural Strength(MPa)		>300
Vickers Hardness (Gpa)		11
Modulus Of Elasticity (Gpa)		>200
Dielectric Constant(1MHz)		8.8
Coefficient Linear Thermal Expansion	/℃，5℃/min, 20-300℃	4.6*10-6
Thermal Conductivity	30 degree Celsius	>=170
Volume Resistivity(Ω.cm)	20 degree Celsius	>1014
	300 degree Celsius	109
	500 degree Celsius	107
Dielectric Strength(KV/mm)		15-20
Remark: The value is just for review, different using conditions will have a little difference.

One of The Ideal Material For Heat Dissipation – Beryllium Oxide (BEO)

Distinguished by its excellent thermal conductivity, Beryllium Oxide is an ideal material for applications requiring large heat dissipation as well as dielectric and mechanical strength. It is particularly well suited for use as a diode laser and semiconductor heat sinks and as a rapid thermal transfer medium for miniaturized circuitry and tightly contained electronic assemblages.

Beryllium Oxide BeO ceramic heatsinks

Properties of Beryllium Oxide (BeO) ceramic:

Beryllium oxide(Beo) B-99 Properties
Item	Value
Dielectric Constant	6.9±0.4（10GHz）
Tangent of Dielectric loss	≤4×10-4（1MHz）
Tangent of Dielectric loss	≤8×10-4（（10±0.5）GHz）
Volume Resistivity	1011Ω·cm（300℃）
Dielectric Strength	≥20 kV/mm
Bending Strength	≥190 MPa
Density	≥2.85 g/cm3
Average Coefficient of Linear Expansion	7.98×10-6 1/K （25℃～500℃）
Thermal Conductivity	≥240 W/（m·K）（25℃）
Thermal Conductivity	≥190 W/（m·K）（100℃)
Thermal Shock Resistance	no crack
Chemical Stability	≤0.3 mg/cm2（1:9HCl）
	≤0.2 mg/cm2（10%NaOH）
GasTightness	≤10×10-11 Pa·m3/s
Average Grain Size	12～30μm
Remark: The value is just for review, different using conditions will have a little difference.

Typical applications for Beryllium Oxide (BeO) ceramic:
Heat sinks for high power electronics, laser diodes, and advanced avionics.
An ideal refractory material which can be used for both nuclear reactors and very high temperature furnace applications.
Other application in aerospace, defense, laser, medical, nuclear.
Please contact us if you would like to discuss how we can best help you solve those thermal management issues calling for higher performance in your project or new design applications.

New functional ceramic materials

New functional ceramic materials are dielectric materials with electrical, magnetic, optical, acoustic, thermal, mechanical, chemical or biological functions. There are many types of functional ceramic materials and a wide range of uses, mainly including ferroelectric, piezoelectric, dielectric, pyroelectric New ceramic materials with different functions such as semiconductor, electro-optic and magnetic.

zirconia ceramics

New functional ceramic materials are important basic materials in modern high-tech fields such as electronic information, integrated circuits, mobile communications, energy technology, and national defense. Functional ceramics and their new electronic components play an important role in the development of the information industry and the enhancement of comprehensive national strength. strategic significance.

alumina porous ceramic

1.Semiconducting Ceramics
Semiconductor ceramics refer to polycrystalline ceramic materials formed by ceramic technology. Unlike polycrystalline semiconductors, semiconductor ceramics have a large number of grain boundaries, and the semiconductorization of grains is completed during the sintering process, so they have rich material microstructures. state and various process conditions, especially suitable for sensitive materials. In addition to semiconductor grain boundary ceramic capacitors, the sensitive materials currently used mainly include heat-sensitive materials, voltage-sensitive materials, photosensitive materials, gas-sensitive materials, moisture-sensitive materials, etc.
2.Magnetic ceramic material
Magnetic ceramics mainly refer to ferrite ceramics, which are composite oxides mainly composed of iron oxide and other iron or rare earth oxides. Ferrites are mostly semiconductors, and their resistivity is much higher than that of general metal magnetic materials. It has the advantage of small eddy current loss, and has been widely used in high-frequency and microwave technology fields, such as radar technology, communication technology, space technology, electronic computers, etc.
3.High temperature superconducting ceramics
High-temperature superconducting ceramics refer to functional ceramic materials that have a higher superconducting temperature than metals. Since the major breakthrough in the research of superconducting ceramics in the 1980s, the research and application of high-temperature superconducting ceramic materials have attracted much attention. In the past ten years, my country’s research in this area has been at the advanced level in the world. At present, the application of high-temperature superconducting materials is developing towards high-current applications, electronics applications, and diamagnetism.
4.insulating ceramic
Insulating ceramics refer to ceramic materials used in electronic equipment for installation, fixing, support, protection, insulation, isolation and connection of various radio components and devices. Insulating ceramics are required to have high volume resistivity, small dielectric coefficient, low loss factor, High dielectric strength, corrosion resistance and good mechanical properties.
Insulating ceramics are widely used in circuit substrates, packaging, high-frequency insulating porcelain and other industries. The main components include insulators, spark plugs, resistor base materials and integrated circuit substrates.
5.Dielectric Ceramics
Dielectric ceramics, also known as dielectric ceramics, refer to functional ceramics that have polarization ability under the action of an electric field and can establish an electric field in the body for a long time. Dielectric ceramics have high insulation resistance, high withstand voltage, small dielectric constant, dielectric Low loss, high mechanical strength and good chemical stability, mainly used in capacitors and microwave circuit components.
Dielectric ceramics include ceramic dielectric materials such as ferrodielectric ceramics, semiconductor dielectric ceramics, high-frequency dielectric ceramics, and microwave dielectric ceramics.
6.Nano functional ceramics
Nano-functional ceramics are new functional ceramics with antibacterial, activation, adsorption, and filtration functions used in air purification and water treatment. mineralization function.
7.Piezoelectric Ceramics
Piezoelectric ceramics refer to the ferroelectric ceramics which are formed by mixing oxides (zirconium oxide, lead oxide, titanium oxide, etc.) at high temperature and sintered at high temperature and reacted in solid state, and which have piezoelectric effect through direct current high voltage polarization treatment. The collective name of piezoelectric ceramics is a functional ceramic material that can convert mechanical energy and electrical energy. Due to its good mechanical properties and stable piezoelectric properties, piezoelectric ceramics are an important force, heat, electricity, and light-sensitive functional material. , has been widely used in sensors, ultrasonic transducers, micro-displacers and other electronic components.
Commonly used piezoelectric components include sensors, gas igniters, alarms, audio equipment, medical diagnostic equipment and communications, etc. The usual piezoelectric material is PZT, and the new piezoelectric ceramic materials mainly include: high-sensitivity, high-stability piezoelectric ceramic materials , electrostrictive ceramic materials, pyroelectric ceramic materials, etc.
8.Transparent functional ceramic
Transparent functional ceramic material is an optically transparent functional material. In addition to having all the basic characteristics of general ferroelectric ceramics, it also has excellent electro-optic effects. Through the control of components, it can present electrically controlled birefringence effects, electrically controlled light scattering Effect, electronically controlled surface distortion effect, electrostrictive effect, pyroelectric effect, photovoltaic effect and photostrictive effect, etc.

alumina-ceramic-components

Transparent ceramics can be made into electro-optic, electro-mechanical military and civilian devices for various purposes: optical switches for optical communications, optical attenuators, optical isolators, optical storage, displays, real-time display pagers, optical fiber docking Micro-displacement drivers, light intensity sensors, optical drivers, etc. used in optical fiber splicing and optical attenuators.

Boron-Nitride-Ceramic-Components

With the rapid development of material science, various new properties and new applications of functional ceramic materials are constantly being recognized by people. Functional ceramics have been widely used in energy development, space technology, electronic technology, sensing technology, laser technology, optoelectronic technology, infrared technology , biotechnology, environmental science and other fields are widely used. Functional ceramics are also developing in the direction of high performance, high reliability, multi-function, miniaturization and integration.

4 types of semiconductor ceramics & characteristics

Semiconducting ceramics refer to ceramics with semiconducting properties and a conductivity of about 10-6~105/m. The conductivity of semiconducting ceramics changes significantly due to changes in external conditions (temperature, light, electric field, gas and temperature, etc.) , so changes in physical quantities of the external environment can be converted into electrical signals and made into sensitive components for various purposes.

Semiconductor-99.7-Alumina-Ceramic-Wafer-Robotic-Arm

1. Thermosensitive ceramics: also known as thermistor ceramics, refer to ceramics whose electrical conductivity changes significantly with temperature. Among them, heat-sensitive semiconductor ceramic tubes and heat-sensitive ceramics are mainly used in temperature compensation, temperature measurement, temperature control, fire detection, overheat protection and color TV degaussing, etc.
2.Photosensitive ceramics: refer to ceramics with photoconductive or photovoltaic effects. Such as cadmium sulfide, cadmium telluride, gallium arsenide, phosphide smoke, bismuth germanate and other ceramics or single crystals, when the light reaches its surface, the conductance increases, and it is mainly used as a semiconductor for automatic control of optical switches and solar cells. Ceramics

Semiconductor-99.7-Alumina-Ceramic-Wafer-Robotic-Arm

3. Gas-sensitive ceramic zirconia semiconductor ceramics
Gas-sensitive ceramics: Refers to ceramics whose electrical conductivity changes with the type of gas molecules they are in contact with. Ceramics such as zinc oxide, tin oxide, iron oxide, vanadium pentoxide, zirconia, nickel oxide and cobalt oxide. It is mainly used for leak detection, disaster prevention alarm and measurement of different gases.
4. Humidity-sensitive ceramics: refers to ceramics whose electrical conductivity changes significantly with humidity. Ceramics such as ferroferric oxide, titanium oxide, potassium oxide-iron oxide, magnesium chromate-titanium oxide and zinc oxide-lithium oxide-vanadium oxide are particularly sensitive to water and are suitable for measuring humidity. and control.

Uses and Characteristics of Ceramic Substrate

Ceramic substrate refers to copper foil directly bonded to alumina (Al2O3) or aluminum nitride (AlN) ceramic substrate surface (single or double sided) at high temperature on a special process plate. The ultrathin composite substrate has excellent electrical insulation performance, high thermal conductivity, excellent soft brazing and high adhesion strength, and can be etched into a variety of graphics like PCB board, with great current-carrying capacity. Therefore, ceramic substrate has become the basic material of high power electronic circuit structure technology and interconnection technology.

Purpose:
High-power semiconductor module; Semiconductor cooler, electronic heater; Power control circuit, power mixing circuit.
Intelligent power module; High frequency switching power supply, solid state relay.
Automotive electronics, aerospace and military electronics components.
Solar panel module; Telecommunications private exchange, receiving system; Laser and other industrial electronics.

Features:
Strong mechanical stress, stable shape; High strength, high thermal conductivity, high insulation; Strong binding force, anti-corrosion.
Excellent thermal cycle performance, cycle times up to 50,000, high reliability.
And PCB board (or IMS substrate) can be etched out of a variety of graphic structure; No pollution, no pollution.
Ceramic Substrate Use temperature range -55℃ ~ 850℃; Thermal expansion coefficient is close to silicon, simplifying the production process of power module.

Aluminum Nitride Ceramic Substrate

Magnesium Stabilized Zirconia Gas Atomizing Nozzles

Magnesium Stabilized Zirconia Gas Atomizing Nozzles are mainly used in the powder metallurgy industry, ferrous and non-ferrous metal powder smelts, such as copper powders, nickel-based alloy powders, stainless steel powders, iron powders and other super alloy powders, etc.
According to different requirements for the qualities, INNOVACERA can supply the different stabilizers and grains combination.
INNOVACERA atomizing nozzles have higher density, excellent resistance to high temperature erosion, crushing of metal liquids and thermal shock stability.
INNOVACERA can provide various shapes and sizes atomizing nozzles and also individually customized according to customer’s demand.

At the same time, INNOVACERA also provide boron nitride containing composite boron nitride nozzles.

Gas atomization

Ceramic Materials Used In Bearing Manufacturing Industry —Silicon Nitride Materials

Silicon nitride ceramic bearings are mainly used in four aspects:
1.High-speed bearings;
2.High-temperature bearings;
3.Vacuum bearings;
4.Corrosion bearings.
The reason why silicon nitride ceramic ball bearings can work in special environments and conditions is entirely due to the performance of silicon nitride ceramics. Silicon nitride ceramics make ceramic bearings have the following advantages:
1. High speed
The weight of the ceramic material is only 40% of the weight of the same steel material, and its low density can realize the light weight and high speed of the bearing, so that the ceramic bearing can suppress the increase of the rolling element load and slip caused by the centrifugal force when the ceramic bearing rotates at high speed , the speed of ceramic bearings is 1.3 to 1.5 times that of steel bearings, and its DN value can reach 3 million.
2. High rigidity
The elastic modulus of silicon nitride ceramics is much higher than that of metal, which is 1.5 times that of metal, so the elastic deformation after stress is small, and the rigidity relative to the load is high, which can increase the rigidity by about 15% to 20%, thus reducing the machine tool.
3. Long – life service
In addition, the mechanical strength of silicon nitride ceramics is not low, and its tensile strength and flexural strength are equivalent to those of metals; while its compressive strength is extremely high, about 5 to 7 times that of metal materials, especially under high temperature conditions, still It can maintain high strength and hardness, and the strength remains basically unchanged even at 1200°C. In the case of foreign matter mixed in, ceramic balls rarely cause spalling failure. Therefore, ceramic bearings with good indentation resistance usually have a longer The service life of steel bearings is generally 3 to 5 times higher than that of steel bearings.
4. Low heat radiation
Since the friction coefficient of silicon nitride ceramic materials is small, which is about 30% of standard bearing steel, compared with metal materials, silicon nitride ceramics have poor thermal conductivity, so the heat generated by ceramic bearings is small during operation, which can be used Extends the life of the grease.

Silicon Nitride Ball Bearing

Aluminum Nitride (AlN) Ceramic Crucible

Due to its high thermal conductivity (≥170W/m.k), aluminum nitride ceramic crucibles can be used for heat conduction to achieve heating effects, and are widely used in electronic equipment, such as gas atomization of electronic devices.

Aluminum nitride crucibles can also be used as containers for vacuum evaporation and metal smelting, especially suitable for vacuum evaporation crucibles for aln.
Because aluminum nitride ceramics are heated in a vacuum with low vapor pressure and will not pollute aluminum even if they decompose.
In the semiconductor industry, using an aluminum nitride crucible instead of a quartz crucible to synthesize arsenide can completely eliminate the pollution of Si to GaAs and obtain high-purity products.

Aluminum Nitride Ceramic Crucibles

Other Typical Applications of Aluminum Nitride Ceramics
1. Application of optical communication devices
2. Dedicated refrigerator
3. LED industry
4. Automotive electronic modules
5. High efficiency power module
6. High-frequency microwave applications

Aluminum Nitride Ceramic Components

Thick Film Metallized Ceramic

Alumina-Metallized-Ceramic-Parts

Innovacera can provide Thick Film Metalizing Ceramics. Metalization is a coating of metal material with good adhesion on the ceramic.This can be followed by a barrier diffusion layer of electrolytic pure Nickel (Ni). The third layer of gold (Au) or other precious metal, results in a tightly sealed ceramic to metal assembly ready for the soldering or brazing process. Unmetalized sections of the part can also be glazed.

Metallized-Ceramic-Parts

Specification
Ceramic Materials: 95%, 99% alumina, AlN, BeO
Metallization Materials: Mo/Mn; W/Mn (BeO only)
Metallization thickness: 25±10um; 8-15um(W/Mn)
Plating Materials : Ni/Ag/Au
Plating Thickness: 2-10um
Pin full strength: 4200kgf/cm2 avg. (at Φ3.0mm pin)

Benefits
• Strong, robust bond
• Minimal substrate deformation
• Universal applicability for ceramic metal joining
• High processing speeds
• Uniform coating, thickness and density

Applicatons
• Feed-through insulators
• Headers
• High-power receptacles
• Insulating discs
• Insulating rings and cylinders
• Precipitator products
• Power Switches
• Vacuum Interrupters
• SCR Housing
• Windows
• X-Ray tubes

Typical Ceramic Composition
95%, 99% Alumina Ceramic Components
AlN Metallized Ceramic Substrate
BeO Metallized Ceramic Substrate

Alumina Metallized Ceramic Parts