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Containerless processing: A route to high‐purity materials
Author(s) -
Nanko Makoto,
Ishizaki Kozo
Publication year - 1992
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19920040914
Subject(s) - materials science , crucible (geodemography) , cube (algebra) , contamination , spheres , nanotechnology , composite material , geometry , ecology , chemistry , physics , mathematics , computational chemistry , astronomy , biology
Minimization of contamination is particularly important in the preparation of semiconductors and special glasses. A technique is presented in which contamination from the crucible during melting is avoided by suspending the material in high pressure gas. A particular application is the production of perfect spheres. The figure shows a perfect sphere of polyethylene formed by melting a cube like that on the left.