Variety of Materials for Ceramics
Every ceramic design is based on a set constraints, requiring certain material and process to fulfll the specific product functionsBecause of the uniqgue capability to fine-tune the composition of each ceramic, Everspring can offer a large range of materials aswell 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.
Alumina (aluminum oxide, Al203)
Alumina is the most widely used material in the family of engineering ceramics due to their generaly useful properties andgood price/performance ratio, and are suitable for most industry applications. Higher purity aluminas demonstrate enhancedwear and corrosion resistance, it is no surprise that fine grain technical grade alumina has a very wide range of applications.

Typical Applications


undefined

  • 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


undefined

  • 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 grainsize allows for extremely smooth surfaces and sharp edges.The usual nomenclature used to describe zirconia ceramic allovs is as followings:TZP tetragonal zirconia polycrystals, PSZ partiallystabilised zirconia, FSZ fully stabilised zirconia, TC transformation toughened ceramics, ZTA zirconia toughened alumina, TTZtransformation toughened zirconia.

Typical Applications


undefined

  • 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


undefined

  • Working temperatures up to 2400 C

  • High density

  • Wear resistance

  • High fracture toughness

  • High hardness

  • Low thermal conductivity (20% that of alumina)

  • Chemicalinertness

  • Resistance to molten metals

  • lonic electrical conduction



Silicon Carbide (SiC)
Silicon carbide is (SiC an excellent abrasive and has been produced and made into grinding wheels and other abrasive productsor over one hundred years. Today the material has been developed into a high quality technical grade ceramic with very good mechanical properties.

Typical Applications


undefined

  • Fixed and moving turbine components

  • Seals, bearings

  • Ball valve parts

  • Heat exchangers

  • Suction box covers

  • Hot gas flow liners

  • Semiconductor process equipment

Main properties


undefined

  • Low densityHigh 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 strikingappearance. High performance silicon nitride materials were developed for automotive engine wear parts, such as valves anocam followers and proven effective. The very high quality bodies developed for these demanding high reliability applicationsare available today and can be used in many severe mechanical, thermal and wear applications.

Typical Applications


undefined

  • Rotating bearing balls and rollers

  • Cutting tools

  • Engine moving parts — valves, turbocharger rotors

  • Engine wear parts — cam followers, tappet shims

  • Turbine blades, vanes, buckets

  • Metal tube forming rolls and dies

  • Precision shafts and axles in high wear environments

  • Weld positioning

Main Properties


undefined

  • 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

Boron Nitride (BN)

Boron nitride is a white and low porosity solid material. Due to the platy hexagonal

crystals and their orientation during thehot press consolidation. the material is anisotropic in its electrical and mechanical properties, It is easilv machined intocomplex shapes using standard carbide tooling.

Typical Application


undefined

  • 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


undefined

  • 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



Fused Silica( FS)
Fused silica is a noncrystalline (glass form of silicon dioxide (guartz, sand). Typical of glasses, it lacks long range order in itsatomic structure. It's highly cross linked three dimensional structure gives
rise to it's high use temperature and low thermaexpansion coefficient.

Typical Applications


undefined

  • 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

Main Properties


undefined

  • 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



Macor Machinable Glass Ceramic
Macor Machinable Glass Ceramic is easily machined using conventional metal working tools. Turnaround of a component cantherefore be relatively fast, however, the materials mechanical properties
tend to be lower than those of other ceramics. lt isjully dense and hermetic requiring no firing after machining to develop it's phvsical properties.Macor exhibits good thermal shock resistance and
mechanical toughness when compared to conventional glasses with similathermal and mechanical poronerties, lt is usable in an air atmosphere to 1000 c. In vacuum svstems, where the temperature
exceeds 600 C, fluorine evolution will occur manifesting itself as boron trifluoride or hydrofluoric acidMacor is attacked by halogen acids at elevated temperatures. lt is significantly more resistant to
Na0H. Alkali salts have anegligible corrosion effect.

Typical Application


undefined

  • 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


undefined

  • Low thermal conductivityLow 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 insulatingbeads, split bush insulators, lamp bases and caps due to its high resistivity, moderate strength and excellentelectrical properties.
Cordierite
Cordierite is an inert material mainly used for fuse tubes, thermocouples, weld back ups,spark killers, insulationwith thermal shock, crucibles, foundry products, heating element supports due to its
good performance inthermal shock resistance, electrical insulation, mechanical strength, corrosion resistance and low thermalexpansion.