BE848980A - Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset - Google Patents

Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset

Info

Publication number
BE848980A
BE848980A BE172896A BE172896A BE848980A BE 848980 A BE848980 A BE 848980A BE 172896 A BE172896 A BE 172896A BE 172896 A BE172896 A BE 172896A BE 848980 A BE848980 A BE 848980A
Authority
BE
Belgium
Prior art keywords
crucible
zone
increasing
resistance
case
Prior art date
Application number
BE172896A
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE848980A publication Critical patent/BE848980A/xx

Links

Classifications

    • 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
    • C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/28—Controlling or regulating
    • C30B13/285—Crystal holders, e.g. chucks
    • 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
    • C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16—Heating of the molten zone
    • C30B13/20—Heating of the molten zone by induction, e.g. hot wire technique

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
BE172896A 1975-12-04 1976-12-02 Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset BE848980A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752554647 DE2554647B2 (de) 1975-12-04 1975-12-04 Verfahren zur erhoehung der ueberschlagsfestigkeit beim tiegellosen zonenziehen

Publications (1)

Publication Number Publication Date
BE848980A true BE848980A (fr) 1977-06-02

Family

ID=5963488

Family Applications (1)

Application Number Title Priority Date Filing Date
BE172896A BE848980A (fr) 1975-12-04 1976-12-02 Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset

Country Status (7)

Country Link
JP (1) JPS5268803A (enExample)
BE (1) BE848980A (enExample)
DE (1) DE2554647B2 (enExample)
FR (1) FR2333568A1 (enExample)
GB (1) GB1524607A (enExample)
IT (1) IT1074209B (enExample)
NL (1) NL7610913A (enExample)

Also Published As

Publication number Publication date
FR2333568B1 (enExample) 1978-06-30
IT1074209B (it) 1985-04-17
DE2554647B2 (de) 1978-02-09
NL7610913A (nl) 1977-06-07
DE2554647A1 (de) 1977-06-08
JPS5268803A (en) 1977-06-08
FR2333568A1 (fr) 1977-07-01
GB1524607A (en) 1978-09-13

Similar Documents

Publication Publication Date Title
FR2325668A1 (fr) Procede pour la preparation de polyurethannes
FR2333769A1 (fr) Procede pour le dedoublement optique de la 1,4-dimethoxy-6-hydroxy-6-acetyl-tetraline
RO69608A (ro) Procedeu pentru prepararea unor 1,2-benzizotiazol-3-one
BE829868A (fr) Procede de separation d'acides hydroxy-2 naphtalene-carboxyliques
BE838823A (fr) Procede pour la preparation de 1,2,5-dihydroxycholecalciferol
FR2302352A1 (fr) Procede perfectionne de production d'aluminium
BE846883A (fr) Procede pour l'elimination de mercure metallique,
BE841260A (fr) Procede pour la preparation de derives de l'oxazole
FR2313380A1 (fr) Procede pour la preparation de methacrylate de glycidyle
PT64718A (fr) Procede pour la preparation de phenyalcoylamines
FR2299323A1 (fr) Procede pour la separation de 4,4'-dichlorodiphenylsulfone
FR2333568A1 (fr) Procede d'augmentation de la resistance aux decharges disruptives dans le cas d'un tirage par zone sans creuset
RO76667A (ro) Procedeu pentru prepararea unor 2,4-dialchilamino-6-clor-5-triazine
FR2318166A1 (fr) Procede de preparation continue de 2,5-dioxo-1-oxa-2-phospholanes
RO70232A (ro) Procedeu pentru prepararea unor 4-pirazoli-4h-1,2,4-triazolil
FR2323769A1 (fr) Procede pour abaisser le degre de contamination de l'aluminium produit par des procedes carbothermiques
PT64691B (fr) Procede pour la preparation d'acides 6,11-di-hydro-11-oxo-dibenz /b,e/ oxepin-alcanoiques
BE861593A (fr) Procede ameliore pour l'extraction continue de la caprolactame par le benzene
RO72558A (ro) Procedeu pentru prepararea unor cicloalcanpirazoli
FR2317290A1 (fr) Procede pour la preparation de 5-cyanopyridones-(6)
BE817578R (fr) Procede de brasage de l'aluminium et de ses alliages
FR2296628A1 (fr) Procede pour la preparation de chloroamino-s-triazines
FR2348174A1 (fr) Procede pour la preparation de dihalogenures gemines
BE846672A (fr) Procede d'ecalage par tournage de pieces rondes
FR2307793A1 (fr) Procede de preparation de la 1,8-dinitroanthraquinone pure