PBN ceramic part
Main production of fire assay crucible,Graphite crucible,Silicon carbide crucible.Also accept OEM and ODM.
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Main production of fire assay crucible,Graphite crucible,Silicon carbide crucible.Also accept OEM and ODM.
Fine Machinability Pbn Coating Pyrolytic Boron Nitride Ceramic Plate Disc Ring Bushing For Heater
PBN is high purity (99.995%) technical ceramic,deposited into free-standing shapes (crucibles) and coatings on graphite using a Chemical Vapor Deposition (CVD) process. Crystal structure of this non-toxic ceramic is such that it exhibits a high degree of thermal anisotropy favorable for crystal growth and other applications.
Pyrolytic boron nitride (PBN) is a special ceramic material, obtained from special equipment by using chemical vapor deposition process. The pyrolytic boron nitride deposition process, like a "snow": hexagonal boron nitride snow sheet parallel to falls, to a piece of graphite base material, and reaches a certain thickness, the final cooling demolding made.
1) Electronic Parts - heat sinks, substrates, coil forms, prototypes
2) Boron doping wafers in silicon semiconductor processing
3) Vacuum melting crucibles
4) High precision sealing, brazing, and metallizing fixtures
5) Microwave tubes
6) Horizonatal caster break rings
7) Low friction seals
8) Plasma arc insulators
9) High temperature furnace fixtures and supports
Item: |
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Process Type: | deposition process |
Material: | Pyrolytic Boron Nitride (PBN) |
Tolerance: | +-1mm |
Facility: | Automatic molding equipment |
Certificates: | ISO 9001 SGS |
Shipping: | Many stocks , delivery time around 5-10days . by sea or by air as customer request |
Delivery & Service: | Timely delivery each time. Provide reliable service and responsible for each customer with each product. Our target is to satisfy every customer with the best service. |
Item | Unit |
| |
Apparent Density | g/cm3 | 2.15-2.19 | |
Gas permeability(He) | cm3/s | <1*10-10 | |
Micro hardness(Knoop) | N/mm2 | 691.88(a-b plane) | |
Tensile strength | N/mm2 | 153.86(parallel) | |
Bending strength | N/mm2 | 243.63(parallel) | 197.76(parallel) |
Modulus of elasticity | N/mm2 | 235690 | |
Specific heat capacity | Cal/g.℃ | 0.371(@ 200℃) | 0.442(@ 900℃) |
Thermal conductivity 200℃ | W/cm.k | 0.6(parallel) | 0.026(perpendicular) |
Thermal conductivity 900℃ | W/cm.k | 0.4370(parallel) | 0.028(perpendicular) |
Dielectric Strength(RT) | KV/mm | 56 | |
Volume Resistivity | Cm | 3.11*1011 | |
High purity and chemical stability
High dielectric strength
Non-porous and low outgassing in ultra-high vacuum (UHV)
Excellent thermal shock resistance
Non toxic
Easily machined
XTL have 7000 square meters work shop
Automatic production line
Longer working life
Reasonable price
All prototype products have to go through 4 checks in the whole process:
1. Raw material inspection
2. In processing inspection
3. Final inspection
4. Outgoing inspection
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