Alumina Coated Evaporation Sources

Overview

Alumina coated evaporation sources have been developed to replace alumina crucibles for some specific applications. The advantages of this type of evaporation source is good heat transfer and the inertness of alumina with most metals. Also, the evaporant does not wet the alumina resulting in no resistant change of the boat when the evaporant melts. Due to the non wetting characteristics of alumina, the evaporant forms a sphere when melted resulting in a point source. This type of evaporation source will give long life compared to the non protected sources. Coated sources will require from thirty to fifty percent more power to effect an evaporation do to the difference in heat conduction. The alumina is semi-conductor grade and is applied to the boat or basket by a plasma spray technique. Temperatures of 1850°C should be avoided, and when an evaporation is effected the power should be reduced slightly to avoid over heating.

Please Select a Category:

Alumina Coated Baskets
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Dimple
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Notched Dimple
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Double Step
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Trough
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Alumina Coated Baskets

Alumina Coated Basket Heaters

e1

#603: 0.040″ DIA x 0.425″ ID 6.9Volt, 39 Amps, 272 Watts

Alumina Coated Basket Heaters

e2

#604: 0.020″ DIA x 0.225″ ID 5.7Volt, 11 Amps, 63 Watts

Alumina Coated Basket Heaters

e3

#605: 0.050″ DIA x 0.775″ ID 7Volt, 50 Amps, 350 Watts

Alumina Coated Basket Heaters

e4

#606: 0.040″ DIA x 0.725″ ID 13Volt, 33 Amps, 429 Watts

Alumina Coated Basket Heaters

e5

#607: 0.050″ DIA x 0.975″ ID 15.8Volt, 49 Amps, 768 Watts

Alumina Coated Basket Heaters

e6

#608: 0.040″ DIA x 0.350″ ID 6.2Volt, 40 Amps, 248 Watts

Dimple

Half Inch Dimpled Boat

Al2O3 Coating
s38-std

#609:  1.21Volt, 130 Amps, 157 Watts

#610:  1.17Volt, 125 Amps, 146 Watts

Three Quarter Inch Dimpled Boat

Al2O3 Coating
s38-std

#611:  1.34Volt, 201 Amps, 269 Watts

#612:  1.29Volt, 190 Amps, 245 Watts

One Inch Dimpled Boat

Al2O3 Coating
s9c-ao-std

#613:  1.14Volt, 248 Amps, 283 Watts

#614:  1.35Volt, 268 Amps, 362 Watts

Deep-Dimple

Al2O3 Coating
s37-ao-std

#615:  1.23Volt, 326 Amps, 401 Watts

Dimpled Wide

Al2O3 Coating
s9f-ao-std

#616:  1.5Volt, 586 Amps, 879 Watts

#617:  1.4Volt, 635 Amps, 889 Watts

Notched Dimple

Al2O3 Coating
s8c-ao-std

#618:  1.31Volt, 253 Amps, 331 Watts

#619:  1.27Volt, 257 Amps, 326 Watts

Notched Dimple

Al2O3 Coating
s29-ao-std

#620:  1.41Volt, 220 Amps, 310 Watts

#621:  1.34Volt, 294 Amps, 394 Watts

Double Step

Double-Step

Al2O3 Coating
s45b-ao-std

#622:  1.27Volt, 264 Amps, 336 Watts

#623:  1.43Volt, 264 Amps, 378 Watts

Top Hat

Inverted Top-Hat Dimpled - Hot Zone Coated

Al2O3 Coating
s2b-ao-std

#624:  1.12Volt, 141 Amps, 158 Watts

#625:  1.13Volt, 141 Amps, 159 Watts

Inverted Top-Hat Dimpled

Al2O3 Coating
s42b-ao-std

#626:  1.35Volt, 262 Amps, 354 Watts

#627:  1.41Volt, 245 Amps, 345 Watts

Narrow Trough Top-Hat

Al2O3 Coating
s1-ao-std

#628:  0.96Volt, 105 Amps, 100 Watts

#629:  1Volt, 106 Amps, 106 Watts

Top-Hat Trough

Al2O3 Coating
s38a-ao-std

#630:  1.22Volt, 181 Amps, 221 Watts

#631:  1.2Volt, 169 Amps, 203 Watts

Top-Hat Trough

Al2O3 Coating
s38b-ao-std

#632:  1.04Volt, 167 Amps, 174 Watts

#633:  1.04Volt, 156 Amps, 162 Watts

Trough

Flat Trough - Hot Zone Coated

Al2O3 Coating
s35a-ao-std

#634:  1.05Volt, 144 Amps, 151 Watts

#635:  0.95Volt, 135 Amps, 129 Watts

Flat Trough

Al2O3 Coating
s35b-ao-std

#636:  0.9Volt, 137 Amps, 123 Watts

#637:  0.89Volt, 130 Amps, 116 Watts

Long Trough

Al2O3 Coating
s36-ao-std

#638:  1.34Volt, 289 Amps, 387 Watts

#639:  1.25Volt, 268 Amps, 336 Watts

Notched Long Trough

Al2O3 Coating
s21-ao-std

#640:  1.34Volt, 207 Amps, 277 Watts

#641:  1Volt, 204 Amps, 300 Watts

Inverted Top-Hat Trough

Al2O3 Coating
s3-ao-std

#642:  0.79Volt, 114 Amps, 90 Watts

#643:  0.83Volt, 117 Amps, 97 Watts

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