boron nitride ceramics,ceramic evaporation boat,BN evaporation
boat,evaporation boat for aluminium metallization
Product Description
Boron Nitride Ceramics are widely applied in automobile, electronic, electrical engineering, aerospace, medical science, scientific research, for extreme difficult environments such as
electrical insulation, thermal insulation, high temperature resistance, chemical resistance, etc.
Optimizing Each Evaporator Boat Application:
A.Resistance-heated boats or crucibles are used in vacuum chambers
at ~1500–1650℃ (2732–3002℉) to evaporate various metals, including
aluminum (Al), copper (Cu), tin* (Sn), and silver* (Ag).
B.Metallized films and papers are used in the food packaging,
capacitor film, decorative, and electronic industries.
Maximizing Evaporator Boat Life
To ensure optimum boat performance and to maximize boat life, the
following procedures should be followed:
A.Check alignment and smooth surface of your contacts.
B.Use graphite tape for uniform electrical and thermal contact.
C.Use pieces of aluminium wire for first heat up to determine
correct initial boat temperature.
D.Adjust wire feed to the very central position on boat surface.
E.Follow heat-up cycle to ensure reannealing of boats during first
heat up (approx. 12-14 minutes).
F.Start wire at 75% of normal feed rate and reduce power to achieve
maximum wetting over length of cavity.
G.Start metallizing and increase wire feed rate over the first 15
minutes of production.
H.Upon completion of the coating:
Stop the wire
Stop power 20-30 seconds later
I.Wait approx. 2 minutes to release vacuum to ensure boats have
cooled to below red heat.
J.Clean boats with a wire brush after every cycle.
| working life | 12-24hours |
| OD | 1.5-3.0 |
| Hot Resistivity | 1200-6000μΩ.cm |
| Working temperature | <1850°C |
| Evaporation rate(1450°C) | 0.4-0.5g/min.cm2 |
| Coefficient of (1450°C) | (4-6)x10-6k |
| Heat conductivity (1450°C) | >100/40W/mk |
| Hot bending intensity | >150mpa |
Ceramic Shape: Rod, Plate, Block, Ring, Washer, Disc, Wafer, Screw, Tube, Bush, Nozzle, Irregular Shapes and Customized Shapes.
Wuxi Special Ceramic Electrical Co.,LTD is a high-tech enterprise
specializing in development and production of evaporation boats and boron nitride products. We have accumulated rich production experience in vacuum
hot-pressing of boron nitride ceramics and have a number of industry experts and engineers.
Our products include evaporation boats in metalizing applications, boron nitride ceramics and the upstream raw materials.
Evaporation boats are used in metalizing applications. It is widely used for
packaging film, capacitance film, paper, textile,
anti-counterfeiting mark and so on.
