FR1195991A - Procédé pour la fusion de métaux de très grande pureté, et en particulier de silicium, et dispositif pour sa mise en oeuvre
- Google Patents
Procédé pour la fusion de métaux de très grande pureté, et en particulier de silicium, et dispositif pour sa mise en oeuvre
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Degussa GmbH, Deutsche Gold und Silber ScheideanstaltfiledCriticalDegussa GmbH
Application grantedgrantedCritical
Publication of FR1195991ApublicationCriticalpatent/FR1195991A/fr
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
C22B41/00—Obtaining germanium
C—CHEMISTRY; METALLURGY
C30—CRYSTAL GROWTH
C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
C30B15/10—Crucibles or containers for supporting the melt
Landscapes
Chemical & Material Sciences
(AREA)
Engineering & Computer Science
(AREA)
Materials Engineering
(AREA)
Metallurgy
(AREA)
Organic Chemistry
(AREA)
Crystallography & Structural Chemistry
(AREA)
Manufacturing & Machinery
(AREA)
Mechanical Engineering
(AREA)
FR1195991D1957-05-181958-05-19Procédé pour la fusion de métaux de très grande pureté, et en particulier de silicium, et dispositif pour sa mise en oeuvre
ExpiredFR1195991A
(fr)
Procédé pour faire avancer des pièces à façonner, en particulier des tubes, entre plusieurs postes de façonnage et dispositif pour la mise en oeuvre du procédé