GB816303A - Contact needles and method of producing the same - Google Patents
Contact needles and method of producing the sameInfo
- Publication number
- GB816303A GB816303A GB30658/56A GB3065856A GB816303A GB 816303 A GB816303 A GB 816303A GB 30658/56 A GB30658/56 A GB 30658/56A GB 3065856 A GB3065856 A GB 3065856A GB 816303 A GB816303 A GB 816303A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- electrodes
- electrolysis
- koh
- distilled water
- 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
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000012153 distilled water Substances 0.000 abstract 3
- 238000005868 electrolysis reaction Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract 2
- 239000011733 molybdenum Substances 0.000 abstract 2
- 229910052697 platinum Inorganic materials 0.000 abstract 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 2
- 229910052721 tungsten Inorganic materials 0.000 abstract 2
- 239000010937 tungsten Substances 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000000969 carrier Substances 0.000 abstract 1
- 238000000866 electrolytic etching Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/08—Etching of refractory metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
816,303. Contact needles; electrolytic etching. EGYESULT IZZOLAMPA ES VILLAMOSSAGI, R. T. Oct. 8, 1956 [Oct. 7, 1955], No. 30658/56. Classes 37 and 41. Whisker electrodes to be made from tungsten or molybdenum are shaped by electrolysis so that the normal to the surface at the end of the needle makes an angle of 45- 90 degrees with the axis of the needle. Suitable lengths of tungsten or molybdenum of from 0.13 to 0.15 mm. diameter are cleaned and degreased before being attached to nickel carriers for brief A.C. electrolysis in a 20 per cent solution of KOH using a platinum counter electrode. These pretreated lengths of wire are then immersed at an angle in an electrolyte consisting of phosphoric acid or an aqueous solution of a water-soluble phosphate, the counter electrodes being of platinum and preferably circular, surrounding the pretreated electrodes. A positive potential of about 110 volts is then applied to the central electrodes until the current through the cell drops almost to zero. The central electrodes then have the form shown in Fig. 3. These electrodes are then once more cleaned by electrolysis in KOH as described above. The composition of the electrolyte may be 70 per cent phosphoric acid and distilled water; or 20 per cent NaH 2 PO 4 , 15 per cent NaOH, 10 per cent KF, 1 per cent K 2 CrO 4 and distilled water; or 20 per cent KH 2 PO 4 , 15 per cent KOH, and distilled water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU816303X | 1955-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816303A true GB816303A (en) | 1959-07-08 |
Family
ID=10980448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30658/56A Expired GB816303A (en) | 1955-10-07 | 1956-10-08 | Contact needles and method of producing the same |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1021081B (en) |
| GB (1) | GB816303A (en) |
| NL (2) | NL203403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251887A (en) * | 2016-12-29 | 2018-07-06 | 上海亚尔光源有限公司 | A kind of production method of super-pressure point light source sealing-in molybdenum sheet |
-
0
- NL NL92421D patent/NL92421C/xx active
- NL NL203403D patent/NL203403A/xx unknown
-
1956
- 1956-10-03 DE DEE13037A patent/DE1021081B/en active Pending
- 1956-10-08 GB GB30658/56A patent/GB816303A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251887A (en) * | 2016-12-29 | 2018-07-06 | 上海亚尔光源有限公司 | A kind of production method of super-pressure point light source sealing-in molybdenum sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| NL203403A (en) | |
| DE1021081B (en) | 1957-12-19 |
| NL92421C (en) |
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