Boron Nitride Evaporation Boat For Metallizing

(2) Physical Performances of Boron Nitride Evaporation Boat For Metallizing :
1.Density : 2.9-3.1g/cm^3
2.Resistivity : 300-2000I IC/cm
3.Porosity : a 10%
4.Thermal expansion coefficient : (4~6)A 10-6cm/cmA C
5.Temperature coefficient of resistance : (5~6)A 10-4/A C
6.Max working temperature : 750A C

(3) Technology standard:
1.Length : LA 0.5
2.Width : B-0.1
3.Thickness : HA 0.18
4.Bending strength : a 0.5mm
5.Under surface roughness : a 0.1mm
6.Two sides nonparallelisn : a 0.2mm

(4)Using conditions:
1. Working current: 400-900A
2. Working voltage: 5-15V
3. Working temperature: 1300 - 1750A C
4. Evaporation rate: 0.3-0.5g/ minute /cm^2
5. Service life : 10-15hours

(5)Characteristics of Evaporation boat:
High chemical resistance to molten metals
Excellent resistance to thermal shock
Service temperature up to 2000 deg in an inert atmosphere .

(6)Application:
Evaporation boats are mostly used as a heater to evaporate aluminum, copper, silver etc in vacuum condition for producing of metalized film, paper, plastic, glass. Main application are films for food packaging, condenser, CRT, monitor and OLED.