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Alumina Ceramic Metallization Disc with 3 Holes for TO Package

Alumina ceramic metallization discs, designed with 3 holes, were typically used in TO (Transistor Outline) packages. Providing the hermetic sealing, electrical insulation, and thermal stability in strict condition for high-reliability electronic packaging.

Product Overview
Alumina ceramic metallization is the process of applying molybdenum-manganese (Mo-Mn) then coating with Nickel on ceramics, bonding both the mechanical and electrical properties of ceramics and metals together. These three through-holes are to accommodate metal feedthrough pins, allowing for electrical interconnection while maintaining hermetic isolation. The metallized alumina disc forms the insulation base for TO packages like TO-3, TO-5, TO-8, TO-39, etc.

Application Areas
-TO Packages (e.g., TO-3, TO-5, TO-8, TO-39)
-Power semiconductor devices
-Laser diodes and optoelectronic packaging
-RF and microwave device packaging
-High-reliability and hermetically sealed sensors
-Telecommunications and optical components
-Medical, and aerospace electronics

Technical Advantages
-High Electrical Insulation: Alumina ceramic provides excellent dielectric properties, is an ideal material for isolating signal paths.
-Hermetic Sealing: By using brazing or soldering techniques, the ceramic discs insulated between metal leads and TO package body, which enables the integration of metal pins through the disc.
-Hermeticity: Provides leak-tight seals in vacuum or demanded environments.
-Thermal Stability: Maintains mechanical and electrical performance under high thermal stress.
-Corrosion Resistance: The metallization layer can help to prevent oxidation, ensuring long-term reliability.
-Mechanical Strength: Suitable for rugged operating conditions such as vibration and thermal cycling.

Alumina ceramic metallization discs are critical components in TO packaging, it can provide the high performance between metal and ceramic for hermetical sealing. Continuous innovation in metallization and brazing techniques will further enhance their application in emerging electronic technologies.

Intermetallic (BN-TiB2) E-Beam Crucibles Evaporator Boat for E-Beam Sources

Innovacera can provide a range of crucibles for electron guns, which can also be designed and customized to meet specific needs. May I know if you have chosen the most suitable crucible for aluminum plating? This article explains in detail how to choose it, let’s go down.

BN-TiB2 Crucibles

Aluminum will form alloys with tungsten crucibles, molybdenum crucibles, and tantalum crucibles, which cause corrosion on the inside of the crucible and also contaminate aluminum. At the same time, the film layer has been contaminated, such as the film being black, dark, and even spotted. Aluminum will also form yellow aluminum carbide with carbon in graphite crucibles, and the formed aluminum carbide will evaporate onto the sample, causing the film to turn yellow. The use of boron nitride crucibles, alumina crucibles, or quartz crucibles is prone to electron beam defocusing issues. The main reason is that the crucible is not conductive, and the excess electrons in the crucible accumulate, resulting in repulsion of the electron beam. The use of conductive boron nitride crucible aluminum plating can effectively solve the problems encountered with ordinary crucibles. The aluminum film is of high quality and the crucible has a long service life.

Common Causes of Crucible Breakage:
The first reason is that the ramp/soak levels are wrong for that material. The second reason the user shuts the power supply off or has a very short ramp down time for power after the deposition is done. This causes the rapid solidification of the melt, and this stresses out the crucible liner.

Advantages of BN-TiB2 Crucibles:
1. Custom sizes available upon request.
2. The crucible is conductive and the electron beam can work normally.
3. It will not pollute the aluminum, and the plated aluminum film has high purity.
4. Recommended for aluminum evaporation.
5. The special design can effectively reduce the power of the electron gun.
6. The special design makes the crucible not easy to crack.
7. Intermetallic crucibles are both conductive and lubricious and are ideal for materials that have a tendency to creep up the sides of the crucible.

Intermetallic (BN-TiB2) E-Beam Crucibles

INNOVACERA produces a series of crucibles, and you can pick up according to the specific requirements and areas of application. If you need any E-Beam Crucibles, please feel free to contact us.

The introduction of quadrupole mass analyzer

The quadrupole mass analyzer functions as a mass filter by selecting ions with a specific m/z (mass-to-charge ratio) value for analysis. Although quadrupole mass spectrometers do not match sector magnetic field instruments in sensitivity, resolution, or upper mass range, they dominate clinical laboratories. This is due to their ease of use, relatively low cost, compact size, and straightforward interfacing with gas chromatography (GC) or liquid chromatography (LC) systems.

Schematic diagram of quadrupole mass analyzer

Figure 1. Schematic diagram of quadrupole mass analyzer

Principle:
The quadrupole mass analyzer consists of four parallel cylindrical rods with hyperbolic cross-sections. These rods are charged by direct current and alternating voltage to affect the movement of ions, and the charging method is: the two diagonal rods have the same voltage, while the two vertical rods have voltages of opposite signs.

Main view of quadrupole mass analyzer

Figure 2. Main view of quadrupole mass analyzer

Ions must slowly enter the quadrupole field (with only a few eV of kinetic energy) to interact with the vibrating electromagnetic field located between the two rods. In direct current (DC), the voltage UU remains constant. Conversely, in alternating current (AC) represented as Vcosωt, the voltage direction periodically reverses. When alternating voltage is applied, the probability of an ion striking the rod depends on its mass (mm) and charge (zz), the magnetic field strength, and the oscillation frequency.
Symbol eV is a unit of energy of Electron volt, It represents the kinetic energy gained by an electron (with a negative charge of 1.6×10-19C) after being accelerated by a potential difference of 1 volt.”

Advantages and Disadvantages:
Advantages
-Relatively cheap and dynamic
-Quick and simple operation, high-throughput analysis
-Does not require high vacuum conditions (> 10-7)
-Good reproducibility and classical mass spectrometry Small size, fast scanning speed, high sensitivity

Disadvantages:
-Low mass range (<4000 m/z)
-Low resolution (< 4000)
-Poor mass accuracy (>100 ppm)
-Low scanning speed
-Requires multiple analyzers

The quadrupole mass analyzer is one of the core components of a mass spectrometer, it determines the resolution, sensitivity and stability of the instrument. If you need the ceramic quadrupole components, please feel free to contact us at any time.

Quadrupole mass analyzer

Nozzles for Powder Metal Atomization

Gas atomization is a kind of high efficient technique to produce high-quality metal powders. It makes the metal powders with spherical shape, clean surfaces and uniform particle sizes. And gas atomization is becoming more and more popular in modern powder production due to its high quality production.

In order to support the processing of gas atomization, INNOVACERA presents a series of atomizing nozzles including Boron Nitride and Zirconia material. We have BMA, BSC, BMZ, BAN and BSN which are all well used for metal powder’s atomization, especially BMA and BMZ are very popular. Hot pressed Boron Nitride nozzles are often used for producing nickel powder, copper powder and aluminum powder. The max working temperature is 1700- 1800℃ in vacuum.

Boron Nitride Material Properties

Properties	Unit	UHB	HB	BC	BMS	BMA	BSC	BMZ	BAN	BSN
Main Composition	–	BN>99.7%	BN>99%	BN>97.5%	BN+SiO2	BN+Al2O3	BN+SiC	BN+ZrO2	BN+AlN	BN+Si3N4
Color	–	White	White	White	White Graphite	White Graphite	Greyish-Green	White Graphite	Greyish-Green	Gray Black
Density	g/cm³	1.6	2	2.0~2.1	2.2~2.3	2.25~2.35	2.4~2.5	2.8~2.9	2.8~2.9	2.2~2.3
Three-Point Bending Strength	MPa	18	35	35	65	65	80	90	90	/
Compressive Strength	MPa	45	85	70	145	145	175	220	220	400~500
Thermal Conductivity	W/(m·k)	35	40	32	35	35	45	30	85	20~22
Thermal Expansion Coefficient (20~1000°C)	10⁻⁶/K	1.5	1.8	1.6	2	2	2.8	3.5	2.8	/
Max Using Temperature Atmosphere / Inactive Gas / Vacuum	°C	900 / 2100 / 1800	900 / 2100 / 1800	900 / 2100 / 1900	900 / 1750 / 1750	900 / 1750 / 1750	900 / 1800 / 1800	900 / 1800 / 1800	900 / 1750 / 1750	900 / 1750 / 1700
Room Temp Electric Resistivity	Ω·cm	>10¹⁴	>10¹⁴	>10¹³	>10¹³	>10¹³	>10¹²	>10¹²	>10¹³	/
Typical Application	–	Nitrides Sintering	High Temp Furnace	High Temp Furnace	Powder Metallurgy	Powder Metallurgy	Powder Metallurgy	Metal Casting	Powder Metallurgy	Metal Casting

The benefits of BN atomizing nozzles
1.Non wetting make it reduce the frequency of nozzle replacement
2.Good surface finish make tolerances better
3.Very good thermal shock resistance makes BN not have to be pre-heating widely

Besides Boron Nitride nozzles, INNOVACERA also supplies Zirconia nozzles for powder metal atomization. This is also a very good option on material for the gas atomization. The max working temperature for the Zirconia is 2000℃ in air, vacuum or atmosphere protection environment. Zirconia nozzles are available for almost all metal and alloy powders except tungsten, molybdenum powders.

The benefits of Zirconia nozzles
1.High thermal resistance make it excellent performace in high temperature atomization
2.Very good wear resistance
3.Chemical inertness make the nozzles not reactivity with atomized alloys
4.Low thermal conductivity

Technical Indicators

Indicators	Item	Units	MSZ-H	MSZ-L	Custom
Main Composition	ZrO2	%	≥95	≥95	60-95
	Al2O3	%	≤0.2	≤0.2	0.2-20
	SiO2	%	≤0.4	≤0.4	0.2-1
	MgO	%	≤2.9	≤2.9	MgO
	Fe2O3	%	≤0.1	≤0.1	0.1-0.3
	TiO2	%	≤0.1	≤0.1	0.1-1.0
Physical	Color	–	Yellow	Yellow	Yellow/White
	Density	g/cm3	≤5.2	5.4-5.60	4.6-5.6
	Porosity	%	≤18.5	≤8	1-18.5
The stabilizers, grains combination and porosity can be designed according to customer’s using environment.

Innovacera Hexagonal Boron Nitride Ceramic Varieties and Selection Instructions

Innovacera has been a supplier in the field of high-temperature boron nitride ceramics for more than 13 years. Now, with the expansion of our production area and the renewal of our hot press furnace, we have taken another step forward and expanded the production of new boron nitride solids.

BN parts

The basis for all products is hexagonal boron nitride (hBN), also known as white graphite. Its properties are comparable to those of graphite: flake structure, softness and high temperature stability in an inert gas atmosphere. hBN is oxidatively stable up to 900°C in air, while graphite starts to oxidize at around 350°C. In addition, hBN is electrically insulating and white, which is a decisive advantage in certain applications. Due to the wide range of properties that depend on its composition, this product family is divided into two product lines: the Pure line and the Composite line.

Boron Nitride Material Properties Table

Due to the wide range of properties that depend on its composition, this product family is divided into two product lines: the Pure Series and the Composite Series. One of these lines is selected according to the specific requirements and areas of application. Decisive criteria here include the mechanical load, required temperature resistance, chemical resistance and electrical properties.

Innovacera Pure Series(UHB and HB) has a boron nitride content of more than 99%. It has good thermal conductivity, high temperature resistance, high thermal shock resistance, and a low thermal expansion coefficient. This product range is ideally suited for insulating frames for PVD coating systems, insulator parts in the semiconductor industry, setters for nitride ceramics ,insulators for high temperature furnaces and crucible for metal melting.

BN for metal melting

Innovacera Composite line(BMS, BMA, BSC, BMZ, BAN and BSN) stands for boron nitride composite materials with outstanding mechanical properties, high wear resistance and very high gas tightness. This versatility makes it ideal for a wide range of applications. The product includes high-quality matal casting nozzles for the metal industry, components for the steel industry and heat sinks for electronics, semiconductor manufacturing, aerospace, automotive. The excellent electrical insulating effect, excellent sealing ability and high thermal shock resistance ensure reliability in the production process and guarantee a long service life for the components.

Boron Nitride Setter Plates for Sintering Nitrides

INNOVACERA produces a series of boron nitride solids, and you can pick up according to the specific requirements and areas of application. If you need any boron nitride parts, please feel free to contact us.

Alumina Ceramic Laser Waveguides For CO2 lasers and excimer lasers

Innovacera introduces high-quality ceramic laser waveguides! Kindly note that we use state-of-the-art grinding equipment to create highly accurate grooves and complex internal structures for CO2 waveguides. At the same time, maintaining precise dimensional tolerances is critical to ensure that the apertures can properly guide the photon beam and ensure a tight seal with the gas medium. Our custom waveguides provide superior performance, reliability, and exceptional durability and efficiency, ideal for a wide range of laser applications.

CO2 lasers were one of the first gas lasers developed and remain one of the most powerful and efficient lasers to date, with an output power to pump power ratio of up to 20%. CO2 lasers produce beams in the infrared and microwave bands (wavelengths of 9.4 to 10.6 µm), and lasers with high enough power can melt or ablate a wide range of materials they are focused on.

Carbon dioxide (CO2) lasers typically use a pump cavity made of alumina ceramics. In a CO2 laser, the pump cavity is called a waveguide. The waveguide directs the photons into a coherent beam, so the waveguide must be very straight and properly aligned. The inner cavity of the waveguide contains a gas mixture that is excited by RF energy to produce a plasma that emits photons. Alumina ceramics are well suited for this application because they exhibit excellent optical properties at a wavelength of 10.6 µm and are mechanically strong enough to withstand operating temperatures in excess of 1000°C.

In recent years, new waveguide designs have significantly improved the performance-to-size ratio of CO2 laser engines (see figure below). For example, a “folded” waveguide design in the shape of the letter “Z” produces the same output as a conventional straight channel while taking up only one-third of the space. The overall size of the entire laser engine, including the cooling system, is also reduced accordingly. Another advantt design is that it dissipates heat efficiently, allowing the laser to be air- or liquid-coage of this compacoled.

Alumina Laser Waveguides Components Properties
-Low dielectric loss
-Consistent dielectric constant
-High density, vacuum tight
-Good thermal conductivity
-Dimensional and electrical stability at all operating temperatures
-High chemical resistance

Experience our high-quality ceramic laser waveguides and trust our company’s expertise to provide you with the best solution for your laser system. Contact us today to learn more about our products and customize waveguides to your unique specifications.

Magnesium-Stabilized Zirconia (MSZ) for Demanding Ultra-High Temperature Applications

In Zirconia ceramic family, there is a material can endure the high temperature 2200 degree centigrade. We call it Magnesium Stabilized Zirconia ceramic. It is a refractory material. Although 95% of the composition is zirconium oxide, its performance is quite difference with the white zirconia ceramic .

From its appearance, it is yellow color and with porosity. We have two kind magnesium stabilized zirconia ceramic. One with low porosity its density is ≤52g/cm3, one with high porosity its density a little higher 5.4-5.6g/m3. But their main composition is almost the same. They can be used in air, vacuum or protective atmosphere environment. Following is the detail of the material data sheet.

Property	Item	Units	MSZ-H	MSZ-L
Composition	ZrO2	%	≥95	≥95
	Al2O3	%	≤0.2	≤0.2
	SiO2	%	≤0.4	≤0.4
	MgO	%	≤2.9	≤2.9
	Fe2O3	%	≤0.1	≤0.1
	TiO2	%	≤0.1	≤0.1
Physical	Color		Yellow	Yellow
	Density	g/cm3	≤5.2	≤5.4-5.6
	Porosity	%	≤18.5	≤8

The feature of Magnesium stabilized zirconia
*High erosion and wear resistance
*High thermal shock resistance
*Metal corrosion resistance in high temperature
*Long service life
*High Strength

Application Field
*Metal powder industry as gas atomizing nozzle and setter plate
*Precious metal smelting industry as ceramic crucible
*High-temperature melt flow control components such as sizing nozzles, ladle skateboard panels, converter slag blocking slide plates, and rings

If you are looking a ceramic material for ultra high temperature, magnesium stabilized zirconia ceramic may be a good choice. Its stabilizers and grains combination can be designed according to customer’s using environment as long as you have the quantity. Any more question about it, just feel free to contact us at +86 592 558 9730 or sales@innovacera.com for more information.

Characteristics And Common Application of Silicon Nitride Igniters

Silicon nitride (Si3N4) ceramic igniters have significant advantages over ceramic heaters, mainly reflected in their high temperature resistance, rapid heating ability and thermal stability, making them very popular in many high temperature application scenarios. Today, we will mainly introduce the characteristics, common application scenarios, advantages and precautions of silicon nitride igniters.

1. Core characteristics

1) High temperature tolerance

2) Silicon nitride ceramic igniters can heat up to 1000-1400°C in a very short time (2-10 seconds), and can work stably in a high temperature environment of 1200-1400°C for a long time. This feature makes it suitable for scenarios that require rapid start-up and maintenance of high temperature uniform distribution, such as industrial kilns, burners, mold heating, etc.

3) Thermal surface stability

4) The heating element is encapsulated in a dense silicon nitride ceramic matrix using tungsten wire embedding or screen printing technology to form a wide thermal surface that can evenly transfer heat. For example, in mold heating or 3D glass molding, the thermal surface can achieve local or overall uniform temperature distribution.

5) Thermal shock and oxidation resistance

6) Silicon nitride ceramics have excellent thermal shock stability and can withstand rapid hot and cold cycles. The oxide protective film formed on the surface can prevent high-temperature oxidation and extend the service life. This is crucial for heat distributors that require frequent start-stop or temperature fluctuations.
The performance data is as follows:

1. Specific application scenarios

1).Industrial kilns and burners

2).Silicon nitride igniters are widely used in gas furnaces, kilns and other equipment to ensure uniform temperature distribution in the combustion chamber through rapid ignition and stable hot surfaces. For example, FKK’s products can be directly used in gas burners with a temperature range of 1100-1400°C.

3).Mold heating system

4).In processes such as 3D glass molding and lens manufacturing, silicon nitride igniters heat the mold at local high temperatures, combined with their heat conduction characteristics to achieve precise temperature control, avoiding deformation or defects caused by uneven heat distribution.

5).Thermal management of gas equipment

6).Such as gas stoves, ovens, water heaters, etc., the high-temperature surface of the igniter directly contacts the combustible gas, and rapid ignition is achieved through heat conduction. At the same time, its wide heat surface design can optimize combustion efficiency and reduce local overheating or cold areas.

7).New energy and environmental protection equipment

8).In solid oxide fuel cells (SOFCs), silicon nitride igniters are used for temperature control in the preheating and startup stages; in biomass boilers and exhaust gas treatment systems, its rapid heating ability can improve heat distribution efficiency and reduce pollutant emissions.

3.Technical advantages and design points

1).Power and voltage flexibility

2).The product covers a power range of 10W to 1000W, supports voltages of 4V to 240V, and can customize the shape of the heating circuit and power density according to the needs of heat distribution. For example, INNOVACERA’s DG series (220-230V, 400-1000W) is suitable for distributed heating of large boilers.

3).Structural optimization
Packaging design: High-purity alumina ceramic base and metal bushing are used to ensure electrical insulation and mechanical strength.

Heat dissipation protection: Set up a temperature buffer and an insulating package to prevent overheating of the terminal (the temperature of the package end needs to be <400°C).

4).Environmental adaptability

5).No electromagnetic interference, oil resistance, moisture resistance and other characteristics make it suitable for complex industrial environments, such as high temperature and corrosive medium heating in the petrochemical industry.

4. Precautions for use

1).Installation and airflow design

-The gas flow rate needs to be matched according to the model to avoid local overheating due to too low flow rate (surface temperature ≤1200°C).

-The airflow channel should ensure full contact with the igniter and reserve heat dissipation space.

2).Operation restrictions

-Strictly prohibit sudden cooling and heating or liquid splashing to prevent ceramic cracking.

-After successful ignition, the power must be turned off in time to avoid continuous high temperature damage to the components.

To summary, Silicon nitride ceramic igniters have become key components in heat distributor applications due to their high temperature performance, thermal stability and flexible design, especially in industrial scenarios that require fast response and uniform heating. In the future, with the advancement of material technology (such as the development of silicon nitride and molybdenum disilicide composite materials), their application range will be further expanded to more stringent thermal management fields.
For more informaiton, please consult with sales@innovacera.com

Innovacera Will Showcase Technical Ceramic Solutions at 2025 Laser World of Photonics in Booth A2 464

Innovacera will attend the exhibition of Laser World of Photonics 2025 at June 24-27, Messe München, Welcome visit us at Booth A2 464 to discover how technical ceramic components use in the photonics industry and ceramic solutions engineered for high-power photonics.

Ceramic-to-Metal Sealing

The global photonics industry converges at Laser World of Photonics 2025 – the world’s premier trade fair for photonics technologies. As the definitive industry event, the exhibition anticipates over 40,000 professional visitors from 70+ countries and 1,300+ leading companies showcasing cutting-edge innovations.

Laser World of Photonics 2025

Innovacera Will Display Core Ceramic Components as below in the exhibition:
✅ Ceramic-to-Metal Sealing Components (CTMS)
✅ Metallized Ceramics
✅ DBC/DPC Substrates
✅ Glass-to-Metal Sealing Components (GTMS)
✅ Alumina Ceramic Reflectors
✅ Boron Nitride Part
✅ Precision Ceramic Components

High-power photonics need precision ceramic substrates & hermetic sealing technologies, as laser power densities escalate and devices miniaturize, traditional materials fail to meet stringent demands for thermal management, hermeticity, and reliability. Technical ceramics are widely use in photonics industry because their excellent properties of resistance of high temperature and electrical insulator. Ceramic -to-metal sealing components have good hermetic sealing and DBC(Direct Bonded Copper)/DPC(Direct Plated Copper) substrates have advantages in thermal management for photonics-integrated circuits. Ceramic reflector is widely used for industrial laser cutting and medical laser systems.

Ceramic Components Precision Ceramic Components

If you have any demand of technical ceramic components, welcome to visit our booth and communicate with us to learn more about ceramic part photonics industry application.

Event Details:
Laser World of Photonics 2025
Dates: 24-27 June 2025
Location: Messe München, Germany
Innovacera Booth: A2 464 (Hall A2)

Custom ceramic setters for sintering of Metal Injection Molded MIM parts

In the metal powder injection molding process, metal powder is sintered into a solid shape. In this process, ceramic setters are essential to prevent its deformation during the sintering process and ensure the dimensional stability of the metal part. MIM can mass-produce small-sized parts (usually less than 50 mm) with complex geometries. Custom aluminum oxide sintering setter optimizes the sintering process by ensuring even heat distribution and minimizing part contamination.

Advantages of High-Purity Alumina Ceramic Setters/Sintering Trays or Plates

1.High Thermal Resistance
Aluminum oxide sintering setter has good high-temperature stability, which is mainly due to its high melting point, high thermal conductivity and good thermal shock resistance. In the sinter process, it can reduce setter thickness to improve energy utilization. So we can use it as a sintering tool for stainless steel, tungsten and other refractory alloys.

2.Inert surfaces
Alumina ceramic setters are chemically inert and don’t react with metals or sintering environments (such as argon, hydrogen or vacuum), it is preventing contamination and maintaining metal component purity. As a result, these setsters also have a long service life without repair.

3.Low Thermal Expansion
Alumina’s low coefficient of thermal expansion reduces size changes when cooling and heating, ensuring consistent metal components geometry and reducing the risk of cracking.

4.Surface Roughness
Innovacera can customize the surface roughness of alumina ceramic setters, a general surface roughness of Ra < 0.4–1.6 µm reduces sticking between the setter and MIM parts. A particle-free surface also protects metal parts from contamination from the setters.

5.Mechanical Strength
Alumina setters have high compressive strength, which enables it to withstand heavy loads without deformation. Its wear resistance also prolongs its service life and reduces replacement frequency. The service life is about 50-200 cycles (depending on thermal shock.

High-purity Alumina Setters Applications in MIM Sintering
-High-purity alumina setters are used in sintering:
-Aerospace components (e.g., nickel-based superalloys)
-Medical implants (e.g., titanium orthopedic components )
-Automotive parts (e.g., gears and fuel injectors)
-Electronics (e.g., copper heat sinks)

INNOVACERA produces a series of custom and standard ceramic setters, and it is made of alumina ceramic, aluminum nitride ceramic and boron nitride ceramic. If you need any ceramic setter, please feel free to contact us.