Pyrolytic Boron Nitride Boat, PBN Boat
Pyrolytic Boron Nitride Boat, PBN Ceramic Boats
Pyrolytic Boron Nitride Boat
Pyrolytic boron nitride boats are mainly used as reaction vessels for polycrystalline synthesis. Before growing compound semiconductor single crystals, it is generally necessary to synthesize compound semiconductor polycrystalline materials. Polycrystalline is synthesized by horizontal directional solidification. The directional solidification furnace is divided into three temperature zones. Taking gallium arsenide polycrystal as an example, arsenic element sublimates in the low-temperature zone (about 630℃), passes through the medium-temperature zone, and gradually combines with gallium in the high-temperature zone (1250~1255℃) to form gallium arsenide polycrystal. PBN boats are used as reaction vessels in the high-temperature zone.
EDGETECH provides customized PBN crucibles such as VGF / LEC / MBE / OLED crucibles, and PBN boats.
Specifications of Pyrolytic Boron Nitride Boat
| Length | Width | Radius | Height | Thickness |
| 6″ | 2“ | 1″ | 1″ | 0.035″ |
| 8″ | 2“ | 1″ | 1″ | 0.035″ |
| 10″ | 2“ | 1″ | 1″ | 0.04″ |
| 14″ | 2“ | 1″ | 1″ | 0.04″ |
| 16″ | 2“ | 1″ | 1″ | 0.04″ |
| 6″ | 3“ | 1.5″ | 1.5″ | 0.035″ |
| 8″ | 3“ | 1.5″ | 1.5″ | 0.035″ |
| 10″ | 3“ | 1.5″ | 1.5″ | 0.04″ |
| 14″ | 3“ | 1.5″ | 1.5″ | 0.04″ |
Pyrolytic Boron Nitride Properties
| Item | Value | Unit | ||
| Lattice constant | a: 2.504×10-10 | μ m | ||
| c: 6.692×10-10 | ||||
| Density | 2.0-2.19 | g/cm3 | ||
| Resistivity | 3.11×1011 | Ω·cm | ||
| Tensile strength (ab) | 153.86 | N/mm2 | ||
| Bend strength | c | 243.63 | N/mm2 | |
| ab | 197.76 | N/mm2 | ||
| Elastic modulus | 235690 | N/mm2 | ||
| Thermo conductivity | “a” direction | “c” direction | ||
| (200℃) | 60 | 2.6 | W/m·k | |
| (900℃) | 43.7 | 2.8 | W/m·k | |
| Dielectric strength (at RT) | 56 | KV/mm | ||
Features of PBN Boat
-High product purity, up to 99.999%
-No wettability with molten metal
-Controllable thermal conductivity, effectively improving crystallization rate
-Excellent thermal shock resistance
-Easy to clean, reusable
-Chemically inert, no chemical reaction with acid or alkali at high temperature
Packing
As a ceramic material, boron nitride is quite fragile in a lot of cases. The Pyrolytic Boron Nitride Boats are usually held in plastic bags by vacuum, and protected with heavy foam.
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