GB342648A - Improvements in or relating to the manufacture of tubes of highly refractory material - Google Patents
Improvements in or relating to the manufacture of tubes of highly refractory materialInfo
- Publication number
- GB342648A GB342648A GB2921229A GB2921229A GB342648A GB 342648 A GB342648 A GB 342648A GB 2921229 A GB2921229 A GB 2921229A GB 2921229 A GB2921229 A GB 2921229A GB 342648 A GB342648 A GB 342648A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tungsten
- tubes
- molybdenum
- wire
- volumes
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/02—Tubes; Rings; Hollow bodies
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/01—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes on temporary substrates, e.g. substrates subsequently removed by etching
Abstract
342,648. Coating metals. DICKER, S. G. S., 20, Holborn, London.-(Naamlooze Vennootschap Philips' Gloeilampenfabrieken; 6, Emmasingel, Eindhoven, Holland.] Sept. 26, 1929, No. 29212. [Class 82 (ii).] Tungsten is deposited on a molybdenum wire by heating the wire to 1700‹ C. for some minutes in tungsten hexachloride vapour. The wire may then be drawn by hammering or by dies. The molybdenum is then dissolved out without affecting the tungsten by a mixture of 10 volumes nitric acid (s.g. 1.41), 6 volumes sulphuric acid (s.g. 1À84) and 4 volumes water. The wires to be coated are preferably arranged in the form of a cylindrical cage closed by plates at both ends as shown in Fig. 3 or alternatively in the form of a helix. The thickness of the deposit diminishes to zero towards the inside of the cylinder or helix so as to exhibit a slot as shown in section in Fig. 5; this facilitates solution of the core. Solution may alternatively be facilitated by the use of a hollow core. Tubes of very small thickness e.g. 500 micron or even 20 micron may be made by the process. The specific gravity of the deposited tungsten is stated to be over 19À0. According to the Provisional Specification, the invention is also applicable to the manufacture of tubes of refractory metals other than tungsten, and cores of material other than molybdenum may be employed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2921229A GB342648A (en) | 1929-09-26 | 1929-09-26 | Improvements in or relating to the manufacture of tubes of highly refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2921229A GB342648A (en) | 1929-09-26 | 1929-09-26 | Improvements in or relating to the manufacture of tubes of highly refractory material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB342648A true GB342648A (en) | 1931-01-26 |
Family
ID=10287923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2921229A Expired GB342648A (en) | 1929-09-26 | 1929-09-26 | Improvements in or relating to the manufacture of tubes of highly refractory material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB342648A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2978799A (en) * | 1954-05-19 | 1961-04-11 | Benteler Werke Ag | Internally and externally coppercoated steel tubes and their manufacture |
| EP0518591A1 (en) * | 1991-06-12 | 1992-12-16 | General Electric Company | Method for producing articles by chemical vapor deposition and the articles produced therefrom |
| WO1996002685A1 (en) * | 1994-07-18 | 1996-02-01 | The Secretary Of State For Defence | Diamond-phase carbon tubes and cvd process for their production |
| CN108130585A (en) * | 2017-12-15 | 2018-06-08 | 内蒙古北方重工业集团有限公司 | A kind of auxiliary cathode device for barrel gutter chromium plating |
-
1929
- 1929-09-26 GB GB2921229A patent/GB342648A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2978799A (en) * | 1954-05-19 | 1961-04-11 | Benteler Werke Ag | Internally and externally coppercoated steel tubes and their manufacture |
| EP0518591A1 (en) * | 1991-06-12 | 1992-12-16 | General Electric Company | Method for producing articles by chemical vapor deposition and the articles produced therefrom |
| WO1996002685A1 (en) * | 1994-07-18 | 1996-02-01 | The Secretary Of State For Defence | Diamond-phase carbon tubes and cvd process for their production |
| GB2304737A (en) * | 1994-07-18 | 1997-03-26 | Secr Defence | Diamond-phase carbon tubes and cdv process for their production |
| GB2304737B (en) * | 1994-07-18 | 1997-09-03 | Secr Defence | Diamond-phase carbon tubes and cvd process for their production |
| US5798143A (en) * | 1994-07-18 | 1998-08-25 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | CVD process for making a hollow diamond tube |
| CN108130585A (en) * | 2017-12-15 | 2018-06-08 | 内蒙古北方重工业集团有限公司 | A kind of auxiliary cathode device for barrel gutter chromium plating |
| CN108130585B (en) * | 2017-12-15 | 2019-06-14 | 内蒙古北方重工业集团有限公司 | A kind of auxiliary cathode device for barrel gutter chromium plating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH620181A5 (en) | Process for the preparation of synthetic quartz glass, apparatus to carry out the process, and the use of the synthetic quartz glass | |
| US2321439A (en) | Method of making vitreous coated bodies | |
| GB342648A (en) | Improvements in or relating to the manufacture of tubes of highly refractory material | |
| GB381720A (en) | Improvements in or relating to x-ray tubes | |
| DE513306C (en) | Electric light tubes with alkali metal vapor filling | |
| AT121043B (en) | Electric discharge tube with Wehnelt cathode. | |
| DE516901C (en) | Electric discharge tube with Wehnelt cathode | |
| DE763100C (en) | Process for the production of layers with high secondary electron emission | |
| DE587330C (en) | Process for the production of tubes from tungsten | |
| DE482449C (en) | Process for the production of insulating compounds with high dielectric strength and finely divided metals | |
| DE495751C (en) | Process for coating a body with platinum | |
| GB626357A (en) | Improvements in or relating to methods of forming metal coatings on bases of ceramic, refractory or high melting point vitreous material | |
| DE879577C (en) | Secondary electron multiplier with one or more secondary emitting electrodes | |
| DE762385C (en) | Electric low-pressure mercury vapor discharge tubes with a fluorescent coating and a process for producing the fluorescent powder | |
| DE570713C (en) | Method of depositing vanadium on a glowing body | |
| GB409613A (en) | Improvements in and relating to electron discharge tubes and incandescent electric lamps | |
| GB767139A (en) | Image storage screens and method of making same | |
| GB479190A (en) | Improvements in electric discharge tubes | |
| AT136934B (en) | Method of manufacturing a photoelectric cell. | |
| AT221239B (en) | Process for coating objects with layers of metal oxide | |
| GB392678A (en) | Improvements in and relating to electric discharge devices | |
| AT233635B (en) | Process for improving the adhesion of a granular material located on a carrier with the aid of silicon dioxide | |
| DE698039C (en) | Flash lamp | |
| DE687902C (en) | Carrier metal for preferably indirectly heated glow cathodes for electrical discharge vessels | |
| GB321914A (en) | An improved process for coating metallic or non-metallic bodies with chromium |