Variety of Materials and Processes for Ceramics 


Every ceramic design is based on a set constraints, requiring certain material and process to fulfill the specific product functions.

Because of the unique capability to fine-tune the composition of each ceramic, Everspring can offer a large range of materials as well as various processes to meet your specific needs.

Contact us now if you need our support on choosing the right material or  process for your new design...

 Ceramic Materials  


Alumina (aluminum oxide, Al2O3)


Alumina  is the most widely used material in the family of engineering ceramics due to their generally useful properties and good price/performance ratio, and are suitable for most industry applications. Higher purity aluminas demonstrate enhanced wear and corrosion resistance, it is no surprise that fine grain technical grade alumina has a very wide range of applications.

Typical Applications 
Wire and thread guides  
High temperature electrical insulators
High voltage insulators
Seal rings
Furnace protection tube
Electronic substrates
Ballistic armor
Abrasion resistant tube and elbow liners
Thermometry sensors
Crucible
Laboratory instrument tubes and sample holders
Grinding media

Main Properties


Wear-resistant
Excellent dielectric 
Refractory
Resists strong acid and alkali attack
Good thermal conductivity
Excellent size and shape capability
High strength and stiffness

Zirconia Oxide (ZrO2) 


Zirconia Oxide has the highest strength and toughness at room temperature of all the advanced ceramic materials. The fine grain size allows for extremely smooth surfaces and sharp edges. 
The usual nomenclature used to describe zirconia ceramic alloys is as followings:TZP tetragonal zirconia polycrystals, PSZ partially stabilised zirconia, FSZ fully stabilised zirconia, TTC transformation toughened ceramics, ZTA zirconia toughened alumina, TTZ transformation toughened zirconia

Typical Applications
Oxygen sensors
Thread and wire guides
Precision ball valve balls and seats
High density ball and pebble mill grinding media
Rollers and guides for metal tube forming
Hot metal extrusion dies
Deep well down-hole valves and seats
Powder compacting dies
Marine pump seals and shaft guides
Scissors, knifes, slitters, fixtures, tweezers,
bearing sleeves and valves

Main Properties


Working temperatures up to 2400 C
High density
Wear resistance
High fracture toughness
High hardness
Low thermal conductivity (20% that of alumina)
Chemical inertness
Resistance to molten metals
Ionic electrical conduction


Silicon Carbide (SiC)


Silicon carbide is (SiC)an excellent abrasive and has been produced and made into grinding wheels and other abrasive products for over one hundred years. Today the material has been developed into a high quality technical grade ceramic with very good mechanical properties.
Typical Applications
Oxygen sensors
Thread and wire guides
Precision ball valve balls and seats
High density ball and pebble mill grinding media
Rollers and guides for metal tube forming
Hot metal extrusion dies
Deep well down-hole valves and seats
Powder compacting dies
Marine pump seals and shaft guides
Scissors, knifes, slitters, fixtures, tweezers,
bearing sleeves and valves

Main properties


Low density

High strength

High hardness

High elastic modulus

Low thermal expansion

High thermal conductivity

Excellent thermal shock resistance

Superior chemical inertness



Silicon nitride (Si3N4)


Silicon nitride is dark gray to black in color and can be polished to a very smooth reflective surface, giving parts with a striking appearance. High performance silicon nitride materials were developed for automotive engine wear parts, such as valves and cam followers and proven effective. The very high quality bodies developed for these demanding high reliability applications are available today and can be used in many severe mechanical, thermal and wear applications.

Typical Applications
Oxygen sensors
Thread and wire guides
Precision ball valve balls and seats
High density ball and pebble mill grinding media
Rollers and guides for metal tube forming
Hot metal extrusion dies
Deep well down-hole valves and seats
Powder compacting dies
Marine pump seals and shaft guides
Scissors, knifes, slitters, fixtures, tweezers,
bearing sleeves and valves

Main Properties


High strength over a wide temperature range
Excellent fracture toughness
High hardness
Outstanding wear resistance, both impinging and frictional modes
Good thermal shock resistance
Good chemical resistance
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Boron nitride(BN)


Boron nitride is a white and low porosity solid material. Due to the platy hexagonal crystals and their orientation during the hot press consolidation, the material is anisotropic in its electrical and mechanical properties. It is easily machined into complex shapes using standard carbide tooling.

Typical Application
Electronic parts — heat sinks, substrates, coil forms, prototypes
Boron doping wafers in silicon semiconductor processing
Vacuum melting crucibles
CVD crucibles
Microcircuit packaging
Sputtering targets
High precision sealing, brazing, and metallizing fixtures
Microwave tubes
Horizontal caster break rings
Low friction seals
Plasma arc insulators
High temperature furnace fixtures and supports

Main Properties


High thermal conductivity
Low thermal expansion
Good thermal shock resistance
High electrical resistance
Easily machined
Low dielectric constant and loss tangent
Microwave transparency
Chemically inert
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Fused Silica( FS)


Fused silica is a noncrystalline (glass) form of silicon dioxide (quartz, sand). Typical of glasses, it lacks long range order in its atomic structure. It’s highly cross linked three dimensional structure gives rise to it’s high use temperature and low thermal expansion coefficient.

Main Properties


Near zero thermal expansion
Exceptionally good thermal shock resistance
Very good chemical inertness
Can be lapped and polished to fine finishes
Low dielectric constant
Low dielectric loss
Good UV transparency

Typical Applications


Casting spout
Casting pipeline    
High temperature lamp envelopes
Temperature insensitive optical component supports
Lenses, mirrors in highly variable temperature regimes
Microwave and millimeter wave components
Aeronautical radar windows

 Macor Machinable Glass Ceramic


Macor Machinable Glass Ceramic is easily machined using conventional metal working tools. Turnaround of a component can therefore be relatively fast, however, the materials mechanical properties tend to be lower than those of other ceramics. It is fully dense and hermetic requiring no firing after machining to develop it’s physical properties.

Macor exhibits good thermal shock resistance and mechanical toughness when compared to conventional glasses with similar thermal and mechanical properties. It is usable in an air atmosphere to 1000 C. In vacuum systems, where the temperature exceeds 600 C, fluorine evolution will occur manifesting itself as boron trifluoride or hydrofluoric acid. 

Macor is attacked by halogen acids at elevated temperatures. It is significantly more resistant to NaOH. Alkali salts have a negligible corrosion effect.

Typical Application
Electrical spacers in vacuum systems
Thermal insulators in heated or cooled assemblies
High intensity lamp reflectors
Crystal supports
Laser cavity components
Microcircuit and photonics packaging
Key Properties
Low thermal conductivity
Low dielectric constant
High electrical resistance
Excellent resistance to high voltage  
Easily machined
Hermetic with no post-machining firing required

Steatite


Steatite is typically applied in insulator, heating element holders, stand-off insulators, interlocking insulating beads, split bush insulators, lamp bases and caps due to its high resistivity, moderate strength and excellent electrical properties.

Cordierite


Cordierite is an inert material mainly used for fuse tubes, thermocouples, weld back ups,spark killers, insulation with thermal shock, crucibles, foundry products, heating element supports due to its good performance in thermal shock resistance, electrical insulation, mechanical strength, corrosion resistance and low thermal expansion.

  Everspring Ceramic --Your Best Business Partner in Ceramics... 

  

  

  


 

 

Has more than 20 years of expertise in ceramics          
Delivers quickly and reliably 
Can provide customized solutions
Offers you a high quality of products and service
Safeguards your processes
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