Technical Ceramic  Manufacturers, Traders, Suppliers

oxide ceramics:
AluminaAl2O3 99.7%

• High temperature application 1700°C, electrical insulator, thin-wall construction, chem. resistant, good thermal conductivity, gas tight
• Application areas:
• Wear component, furnace heating coil support, wire guides etc.

Substrates Al2O3 96%

• electrical printer carriers, insulators

Zirconia ZrO2 y- or MgO-rod.

• very high surface qualities Ra

Fused silica SiO2

• very poor heat conductor, very low thermal expansion; max. 1000°C applicable
• Use as thermal insulators

Non-oxide ceramics:
Aluminium nitride AlN

• very good heat conductor, very good thermal shock resistance
• Use as heat conductors and boards

Silicon nitride Si3N4

• very wear resistant, high toughness and hardness
• for wear parts

Silicon carbide SiC, SiSiC

• High-temperature application, very good resistance to temperature changes; high thermal conductivity, extremely good oxidation resistance
• Examples of use: Slide bearings, guide rails

boron nitride BN+AlN

• low thermal expansion, low density
• for use in glass nozzles

Silicate ceramics:
Aluminium silicate Al2O3 60%

• very high thermal shock resistance, gas-tight; high electrical insulation even at high temperatures 1400°C
• Examples of use: Thermal engineering, wear component, resistance body

cordierite/mullite

• porous
• for filter ceramics

Steatite

• High temperature application
• for use in furnace construction or catalysts

Glasses and other ceramics:
Sapphire Al2O3 99.99%

• very good sliding properties, very good chemical resistance
• Light guides, sliding bodies, insulators, cutting components

Quartz glass SiO2 99.99%

• high temperature resistance 1000°C
• Application examples light guides and chemical use

Borosilicate for use in fibre optics
Macor

• max. 1000°C applicable, conditionally workable with conventional tools!
• For use in radiators and insulators

Our processing techniques:

• cut-off grinding max. diameter 70mm; max. length 250mm
• Surface and groove grinding max. length 300mm
• CNC contour grinding max. 200 x 130mm
• cylindrical grinding max. diameter 150mm; max. length between centres 350mm
• Centerless grinding max. diameter 50mm
• CNC round profile grinding max. diameter 100mm
• Internal honing max. inner diameter 25mm
• Flat lapping; -Polishing does not mean optical polishing for sapphire!
• Round polishing min. diameter 5mm; max. diameter 30mm

• Ceramic materials exhibit very high mechanical strength which is required for the application as components for machines and equipments.
• The hardness of advanced ceramic materials is above 9 on Moh´s Scale, and only diamond is harder (which rates 10 on Moh´s Scale). For this reason ceramic materials are excellent suitable for the production of parts with very high wear resistance e.g. for the paper-, textile- and wire industry.
• The low density of the ceramic material is advantageous in the design of rotating movable parts such as bearings, valves, and rotors.
• Ceramic materials are extremely heat resistant. The properties of metals can be significantly above 500 ° C after. Construction ceramics, however, can also be used above 1000 ° C. Ceramic components, for example in the metal industry in direct contact with molten metal (eg Abziehringen) is used.
• In contrast to metals ceramic materials react only insignificant with acids and bases. Therefore they are ideal for the application in chemical industry.

- Ceramic materials exhibit very high mechanical strength which is required for the application as components for machines and equipments.
- The hardness of advanced ceramic materials is above 9 on Moh´s Scale, and only diamond is harder (which rates 10 on Moh´s Scale). For this reason ceramic materials are excellent suitable for the production of parts with very high wear resistance e.g. for the paper-, textile- and wire industry.
- The low density of the ceramic material is advantageous in the design of rotating movable parts such as bearings, valves, and rotors.
- Ceramic materials are extremely heat resistant. The properties of metals can be significantly above 500 ° C after. Construction ceramics, however, can also be used above 1000 ° C. Ceramic components, for example in the metal industry in direct contact with molten metal (eg Abziehringen) is used.
- In contrast to metals ceramic materials react only insignificant with acids and bases. Therefore they are ideal for the application in chemical industry.
Moreover, ceramic materials are bioinert and are used as implants (e.g. hip joint endoprosthesis, tooth pins, malleus).
All ceramic materials (also non-oxide) exhibit excellent oxidation resistance at high temperatures.

For advanced ceramics with demanding or specific application needs NABALOX®-oxides offer reproducible materials and cost savings with a maximum of processing safety.
Typical characteristics include:

• reduced sintering temperatures
• high sintered densities and defined shrinkage
• an increase in mechanical strength of the ceramic materials
• excellent thermal fatigue and corrosion resistance

Technical ceramics, also known as engineering ceramics or advanced ceramics, are a class of ceramic materials that exhibit exceptional mechanical, electrical, and thermal properties. They are designed for use in various industrial applications where conventional ceramics may not provide the required performance. Technical ceramics can be made from a wide range of raw materials, including oxides, carbides, nitrides, and borides, and can be produced using different manufacturing techniques such as powder metallurgy, sintering, and hot pressing. Some common examples of technical ceramics include zirconia, alumina, silicon carbide, and silicon nitride. These materials find applications in diverse fields, including electronics, automotive, aerospace, and medical industries.

1. Composition: Technical ceramics are most commonly metal compounds combined with oxides, carbides, or nitrides.
2. Properties: They are known for their high strength and hardness, high melting temperatures, chemical inertness, and low thermal and electrical conductivity. However, they also display brittleness and sensitivity to flaws.
3. Manufacturing Process: By altering the chemical formulation or manufacturing processes, their properties can be tailored to meet a large range of demanding conditions.
4. Applications: Technical ceramics are frequently being used to replace metals, polymers, and refractory materials in a wide variety of applications due to their notable high temperature capability, hardness, and electrical properties.

Jundro’s precision ceramic parts serve key industries, including semiconductors, medical devices, automation, defense and military, aerospace, and quantum research. The company has established strong partnerships with world-renowned enterprises and academic institutions, such as ABB,  General Electric, CETC, the Nuclear Power Research Institute, Tsinghua University, and Duke University, supplying them with high-precision ceramic components tailored to their needs.

Materials
Macor
Zerodur
Aluminum nitride
95-98% alumina
zirconia
Silicon nitride
Silicon carbide
Boron carbide
Quartz glass
Sapphire glass
Shapal-HI-M

Aerospace
semiconductor
medical field
National defense and security
Electronic field
Optical field
Energy and Automation
Scientific quantum computing and other fields

• DuroBest® materials are particularly suitable for high-strength electrically insulating machine components.

• K-Therm® materials are additionally temperature resistant up to 1500°C.

• The GleitTherm® range of materials is designed in particular for special sliding applications up to 600°C, from chain slides to wear-free plain bearings.

• The range is rounded off by ThermTextil®, which offers flexible heat protection, from fabrics to hoses, at 1200°C.