GB837690A - Zone purification device - Google Patents
Zone purification deviceInfo
- Publication number
- GB837690A GB837690A GB214059A GB214059A GB837690A GB 837690 A GB837690 A GB 837690A GB 214059 A GB214059 A GB 214059A GB 214059 A GB214059 A GB 214059A GB 837690 A GB837690 A GB 837690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- specimen
- coils
- enclosure
- currents
- Prior art date
- 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.)
- Expired
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
-
- 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
-
- 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
- C30B13/32—Mechanisms for moving either the charge or the heater
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
<PICT:0837690/III/1> <PICT:0837690/III/2> Zone melting apparatus comprises an enclosure 5 (Fig. 1) for an elongated specimen 1 and heating means including a primary coil 36 outside the enclosure 5 and a secondary coil 37 inside the enclosure encircling a portion of the specimen 1, the coils 36 and 37 being connected to a movable support rod 42 whereby the coil 37 may be moved along the specimen 1 while maintaining a fixed position relative to the coil 36. Secondary coil 37, which is energized by primary coil 36, comprises a single turn having an inner portion 37a (Fig. 3) which heats specimen 1 and produces a molten zone 1a by currents induced therein. An additional secondary coil 40 having two turns each with an inwardly bending portion 40a, is energized by an additional primary coil 39, and induces currents in the molten zone 1a which are repulsed by the currents in coil 40 so that the repulsion helps to support the molten zone. Coils 39 and 40 are also mounted on support rod 42 and move in fixed relationship to each other and to coils 36 and 37. Coils 37 and 40 are hollow and are water cooled. Container 5 is airtight and is mounted on a platform 7 (Fig. 1) which may be adjusted to a horizontal position. Container 5 is coactuated by a pump 32. The specimen 1 is held between supports 2 and 3, the lower support 3 being rotated by a rod 81 magnetically coupled to a drive shaft 74.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US665094A US2870309A (en) | 1957-06-11 | 1957-06-11 | Zone purification device |
| GB214059A GB837690A (en) | 1959-01-20 | 1959-01-20 | Zone purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB214059A GB837690A (en) | 1959-01-20 | 1959-01-20 | Zone purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB837690A true GB837690A (en) | 1960-06-15 |
Family
ID=9734303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB214059A Expired GB837690A (en) | 1957-06-11 | 1959-01-20 | Zone purification device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB837690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1231212B (en) * | 1960-09-15 | 1966-12-29 | Philips Nv | Device for treating elongated batches of a substance by means of zone heating |
-
1959
- 1959-01-20 GB GB214059A patent/GB837690A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1231212B (en) * | 1960-09-15 | 1966-12-29 | Philips Nv | Device for treating elongated batches of a substance by means of zone heating |
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