Ceramic Evaporation Boat For Capacitor Metal Vacuum Coating
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.
Evaporator Boat – Characteristics and Applications
3- Compontent
A. Highest purity in all composition
B. Perfect balance point in thermal shock/high temp mechanical, which could meet special application.
C. Not used for evaporator boat application
D. Use for crucible for OLED/semi-conductor, where purity and high temperature properties are critical for the application
2- Component
A. 2-Component evaporator boat is the most common product for most evaporation applications
B. Particularly suitable for food package metallization process
C. Good performance in AlOx metallization process
D. High evaporation compared to 3-component family
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.
In order to yield the greatest performance of evaporation boats, achieve the longest service life. Please read the following:
A. Align the clamp on both sides and keep the surface bright and clean.
B. Make sure good electric contact and heat conduction on end face and side face by graphite paper.
C. At the first time of heating the new boat, please put a length of aluminium wire in the centre of cavity for easily confirming the temperature of boats.
D. The contact point of aluminium wire should be in the length of 1/3 boat or 2/5.
E. The first heating of new boat should not be so fast that will effect deflation .
F. For the first time of new boat, the speed of transmitting aluminium wire should be gradually increased from normal 75% and the power should be gradually induced for the greatest area of spreading molten aluminium.
G. The time for heating new boat should be 15 minutes, and operate the evaporation. as above method of transmitting aluminium at beginning.
H. Please stop transmitting aluminium wire and turn off the power supply after 30-60 seconds at the end of evaporating each rolls.
Technical Parameter For ceramic boats:
Resistivity(normal temperature): 300-2000μΩ.cm
evaporation rate(1450°C): 0.4-0.5g/min.cm2
working temperature: <1850°C
heat conductivity(normal temperature/1450°C) : >100/40W/mk
coefficient of thermal expansion(1450°C) : (4-6)x10-6k
product dimension : Besides standard size, can according to the customer demand for machining
| 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 |
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.
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