Research Opportunities for Materials with Ultrafine Microstructures (1989) / Chapter Skim
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Pages 31-33
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From page 31... ...
for the production of ultrafine metal particles in an inert-gas atmosphere has been extensively studied during the past 25 years. Using this technique, powders with rather narrow size distributions can be produced in technologically significant amounts.
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From page 32... ...
Although resistance-heated evaporation sources have been commonly used in the gascondensation method, radio-frequency sources, electron-beam, laser, or plasmatorch-heated sources, and ion-sputtering sources are now being used or investigated to allow for greater control of the evaporation and powderproduction conditions for a wider range of starting materials. The synthesis of more complex nanophase materials will also be facilitated.
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From page 33... ...
, . -A I\\- I\\\\ PISTON - ~7~1— PISTON i~\\\\\\\\\\\i BELLOWS , SLEEVE MAIN VACUUM CHAMBER LOW PRESSURE COMPACTION UNIT HIGH PRESSURE COMPACTION UNIT FIGURE 9 Schematic drawing of a gas-condensation chamber for the synthesis of nanophase materials.
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