GB1025115A - Method of making titanium capacitors - Google Patents
Method of making titanium capacitorsInfo
- Publication number
- GB1025115A GB1025115A GB3675662A GB3675662A GB1025115A GB 1025115 A GB1025115 A GB 1025115A GB 3675662 A GB3675662 A GB 3675662A GB 3675662 A GB3675662 A GB 3675662A GB 1025115 A GB1025115 A GB 1025115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- titanium
- nitrate
- nitrates
- fabricated
- electrode
- 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title abstract 7
- 239000010936 titanium Substances 0.000 title abstract 6
- 229910052719 titanium Inorganic materials 0.000 title abstract 6
- 239000003990 capacitor Substances 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 abstract 4
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Inorganic materials [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 abstract 2
- 229910002804 graphite Inorganic materials 0.000 abstract 2
- 239000010439 graphite Substances 0.000 abstract 2
- 239000012535 impurity Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 150000002823 nitrates Chemical class 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 abstract 2
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical class O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 238000007743 anodising Methods 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 235000001465 calcium Nutrition 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical group [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002826 nitrites Chemical class 0.000 abstract 1
- 235000010333 potassium nitrate Nutrition 0.000 abstract 1
- 239000004323 potassium nitrate Substances 0.000 abstract 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 235000010344 sodium nitrate Nutrition 0.000 abstract 1
- 239000004317 sodium nitrate Substances 0.000 abstract 1
- 235000010288 sodium nitrite Nutrition 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0029—Processes of manufacture
- H01G9/0032—Processes of manufacture formation of the dielectric layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/052—Sintered electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Treatment Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
In a method of producing titanium anode capacitors metal titanium is immersed in an acid to which the titanium is corrosion resistent in order to remove impurities and form a thin oxide film thereon, and is then anodised in a molten electrolyte consisting essentially of a mixture of the nitrates or nitrites of an alkali metal and the nitrates of an alkaline earth metal. A solid electrolytic capacitor may be fabricated by coating this anodized electrode with a manganese dioxide semi-conductor layer, the manganese dioxide being formed by the pyrolytic decomposition of manganese nitrate, and thereafter applying a graphite layer. Finally a counter electrode is applied by vapour depositing a gold or aluminium film on the graphite or applying a silver paste thereto. The titanium anode may be a foil, wire or rod and may be fabricated by sintering titanium powder of relatively large grain size. Details of the sintering process are given in the Specification. Suitable solutions for carrying out the pretreatment of the sintered titanium rods in order to remove impurities and to coat them with a uniform thin oxide layer include acetic, chromic or nitric acids, the forming electrolyte for anodizing the treated electrode may consist of a molten mixture of potassium or sodium nitrate and calcium or strontium nitrate, or a molten mixture of sodium nitrite and calcium nitrate. To produce a suitable film the forming conditions, which are determined empirically, are critical. One set of suitable conditions is: temperature 32 DEG C., voltage 20 20 minutes.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3684061 | 1961-10-11 | ||
| JP973362 | 1962-03-12 | ||
| JP973462 | 1962-03-12 | ||
| JP1170662 | 1962-03-22 | ||
| JP1634162 | 1962-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1025115A true GB1025115A (en) | 1966-04-06 |
Family
ID=27519098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3675662A Expired GB1025115A (en) | 1961-10-11 | 1962-09-27 | Method of making titanium capacitors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1025115A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004097869A2 (en) * | 2003-04-25 | 2004-11-11 | Cabot Corporation | A method of forming sintered valve metal material |
| DE102005058125B3 (en) * | 2005-11-29 | 2007-07-19 | BAM Bundesanstalt für Materialforschung und -prüfung | Process for the preparation of a metallic substrate with a biocompatible surface and the substrate produced therewith |
-
1962
- 1962-09-27 GB GB3675662A patent/GB1025115A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004097869A2 (en) * | 2003-04-25 | 2004-11-11 | Cabot Corporation | A method of forming sintered valve metal material |
| WO2004097869A3 (en) * | 2003-04-25 | 2005-06-30 | Cabot Corp | A method of forming sintered valve metal material |
| US7485256B2 (en) | 2003-04-25 | 2009-02-03 | Cabot Corporation | Method of forming sintered valve metal material |
| DE102005058125B3 (en) * | 2005-11-29 | 2007-07-19 | BAM Bundesanstalt für Materialforschung und -prüfung | Process for the preparation of a metallic substrate with a biocompatible surface and the substrate produced therewith |
| US7670636B2 (en) | 2005-11-29 | 2010-03-02 | Bam Bundesanstalt Fuer Materialforschung Und -Pruefung | Method for the production of a metallic substrate having a biocompatible surface and substrate produced using same |
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