High Temperature Effusion Cell (HTC) Print E-mail
Effusion Cells

Product description:

This type of effusion cell is designed to evaporate materials at temperatures up to 2000° C. A self-supported tungsten filament is used for the heating system. The hot area of the effusion cell is made entirely of tantalum and tungsten.

Applications:

 

Material Symbol Crucible Melting Point (°C) Temperature (°C) for Vapor Pressure (Torr)
       
10-8 10-6 10-4
Chromium Cr
VC 1907
837
977
1157
Cobalt Co
Al2O3, BeO 1495
922
1067 1257
Copper Cu
Al2O3, BeO, Mo, Ta 1805 722
852
1027
Dysprosium
Dy
Ta
1412
625
750
900
Gold
Au
Al2O3, BeO 1568
858
998
1180
Iron
Fe Quartz, PBN
98
74
123
193
Lanthanium
La Al2O3 920 990
1212
1388
Lutetium Lu
Al2O3 1663 870
1228
1376
Nickel Ni
Al2O3, BeO, VC 1455
927
1072
1262
Palladium Pd
Al2O3, BeO 1555
842
992
1192
Platinum Pt
ThO2, C
1768 1292
1492
1747
Silver Ag Al2O3, Mo
962
574
685
832
Vanadium V
W, Mo
1910
1162
1332
1547
Yttrium Y
Al2O3 1562 957
1117
133

 

 

Technical data:

Standard:
 
Type HTC
Heating system Radiation heating, tungsten (self supported)
Temperature range
300°C - 2000°C
Temperature stability
> 0.1K depending on the PID controller
Max. outgas. temp
2100°
Max. power
450 W (CF 40)
Max. current
20 A
Bakeout temperature 250°C
Conditioning
Heated to maximum temperature with and without crucible
Shipping
Nitrogen flooded stainless steel container with valve
Custom:
 
Flange size
CF 40 / CF 63 / CF 100 or specified
Max outer diameter
38 mm / 63 mm / 100 mm etc.
Length
As specified
Thermocouple type
Type C / WRe 5% - 26% (or specified)
Crucible material
PBN / W / Ta / Mo
Crucible capacity
All standard sizes or specified
Options:
Various different crucible materials
Downward looking version

 

 

 
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