EP0561812B1 - Elektrode und verfahren zu ihrer herstellung - Google Patents
Elektrode und verfahren zu ihrer herstellung Download PDFInfo
- Publication number
- EP0561812B1 EP0561812B1 EP91920001A EP91920001A EP0561812B1 EP 0561812 B1 EP0561812 B1 EP 0561812B1 EP 91920001 A EP91920001 A EP 91920001A EP 91920001 A EP91920001 A EP 91920001A EP 0561812 B1 EP0561812 B1 EP 0561812B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- electrode body
- main electrode
- intermetallic phase
- metal
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 22
- 238000005275 alloying Methods 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910000907 nickel aluminide Inorganic materials 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910015342 Ni2Al3 Inorganic materials 0.000 description 2
- 229910000624 NiAl3 Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000009760 electrical discharge machining Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000943 NiAl Inorganic materials 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910000923 precious metal alloy Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910021324 titanium aluminide Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/39—Selection of materials for electrodes
Definitions
- the invention relates to an electrode for electrical discharges, in particular spark plug electrodes, with an electrode base made of metal and a method for their production.
- Common spark plugs generally have a center electrode and a ground electrode, the tips of the two electrodes being arranged with respect to one another in such a way that a spark gap is left free. Due to the constant generation of sparks between the two electrodes, the tips are subject to considerable wear. This problem places high demands on the temperature resistance, corrosion resistance and thermal expansion characteristics of the electrode tip. Spark erosion and oxidation phenomena also lead to considerable stress.
- the present invention takes advantage of the known IP materials (intermetallic phases) made of nickel aluminides.
- Intermetallic phases are compounds of metals with ordered atomic distributions. These intermetallic phases are high even Temperatures are stronger than metal alloys, more resistant to oxidation than non-precious metal alloys and more malleable than ceramics. This means that their properties lie between metal and ceramic.
- Intermetallic phases are, for example, titanium aluminides and nickel aluminides.
- the electrode can consist entirely of the IP material or can have a tip made of IP material on an electrode body made of otherwise customary electrode material.
- an IP material i.e. an intermetallic phase itself
- an IP material i.e. an intermetallic phase itself
- nickel aluminides such as NiAl3, Ni2Al3 or the like.
- the connection to the electrode base body is then carried out by known methods, such as welding or high-temperature soldering.
- Another advantageous possibility is, however, to apply a material to the electrode base body to form an intermetallic phase and then to produce a high-melting, oxidation-resistant intermetallic phase there.
- Aluminum or an aluminum alloy, for example, are suitable as materials.
- the material is preferably joined by alloying.
- This alloying takes place, for example, using the known laser technology.
- aluminum or aluminum alloys or aluminum-containing intermetallic phases such as NiAl3, Ni2Al3 or the like.
- Ni4b5, Inconel or similar alloys or also applied to two-substance electrodes with appropriate cladding materials the specified goal in any case is the production of NiAl, if necessary.
- additional alloying elements such as chromium, manganese, silicon, molybdenum or the like ..
- Alloy formation or alloying can also take place using the aluminothermic effect, the heat of reaction being used in the oxidation of aluminum to form the alloy. In this case, a cermet material with connections of corundum particles is created.
- the intermetallic phase should also contain alloy additives. It is possible, for example, to reduce the electron work function by adding alkaline earth metals.
- alloy additives can be added to the material before alloying, which make this material ductile or deformable. This can also be done by appropriate pretreatment. This includes, for example, the addition of boron, with boron preferably evaporating during the alloying. If, for example, chrome is added, the corrosion resistance of the electrode can be improved.
- the material is placed as a plate, cap or the like on the electrode base body and then, for example, alloyed on. This manufacturing process is simple and inexpensive.
- the invention is also intended to include, for example, the use of an intermetallic phase in the manufacture of electrodes, in particular spark plug electrodes.
Landscapes
- Spark Plugs (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4039778 | 1990-12-13 | ||
| DE4039778A DE4039778C1 (pt) | 1990-12-13 | 1990-12-13 | |
| PCT/DE1991/000889 WO1992010868A1 (de) | 1990-12-13 | 1991-11-15 | Elektrode und verfahren zu ihrer herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0561812A1 EP0561812A1 (de) | 1993-09-29 |
| EP0561812B1 true EP0561812B1 (de) | 1995-11-02 |
Family
ID=6420214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91920001A Expired - Lifetime EP0561812B1 (de) | 1990-12-13 | 1991-11-15 | Elektrode und verfahren zu ihrer herstellung |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5477022A (pt) |
| EP (1) | EP0561812B1 (pt) |
| JP (1) | JPH06503199A (pt) |
| KR (1) | KR100215149B1 (pt) |
| AU (1) | AU648613B2 (pt) |
| BR (1) | BR9107163A (pt) |
| DE (1) | DE4039778C1 (pt) |
| ES (1) | ES2079685T3 (pt) |
| WO (1) | WO1992010868A1 (pt) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9831640B2 (en) | 2015-09-17 | 2017-11-28 | Federal-Mogul Ignition Gmbh | Method for manufacturing an ignition electrode for spark plugs and spark plug manufactured therewith |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ270219A (en) * | 1993-12-23 | 1997-03-24 | Mintek | Spark plug electrode of intermetallic compound |
| DE19631985A1 (de) * | 1996-08-08 | 1998-02-19 | Bosch Gmbh Robert | Elektrode mit verschleißfester Beschichtung, Zündkerze und Verfahren zu ihrer Herstellung |
| US8492963B2 (en) * | 2009-11-24 | 2013-07-23 | Federal-Mogul Ignition Company | Spark plug with volume-stable electrode material |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2005649A (en) * | 1977-09-22 | 1979-04-25 | Johnson Matthey Co Ltd | Electrodes |
| JPS5450735A (en) * | 1977-09-30 | 1979-04-20 | Toyota Motor Corp | Noise wave preventive surface treatment for distributor |
| DE3132814C2 (de) * | 1980-08-21 | 1984-10-25 | Nippondenso Co., Ltd., Kariya, Aichi | Zündkerze für Brennkraftmaschinen |
| DE3233584A1 (de) * | 1982-09-10 | 1984-03-15 | G. Rau GmbH & Co, 7530 Pforzheim | Elektrode fuer eine elektrische entladungsstrecke und herstellungsverfahren hierzu |
| US4540910A (en) * | 1982-11-22 | 1985-09-10 | Nippondenso Co., Ltd. | Spark plug for internal-combustion engine |
| US4904216A (en) * | 1983-09-13 | 1990-02-27 | Ngk Spark Plug Co., Ltd. | Process for producing the center electrode of spark plug |
| DE3727526A1 (de) * | 1987-08-18 | 1989-03-02 | Bosch Gmbh Robert | Verfahren zum herstellen einer zuendkerze fuer brennkraftmaschinen |
| US5102700A (en) * | 1988-04-18 | 1992-04-07 | Alloy Surfaces Company, Inc. | Exothermically formed aluminide coating |
| US5093879A (en) * | 1990-06-22 | 1992-03-03 | International Business Machines Corporation | Electro-optical connectors |
-
1990
- 1990-12-13 DE DE4039778A patent/DE4039778C1/de not_active Expired - Lifetime
-
1991
- 1991-11-15 KR KR1019930701774A patent/KR100215149B1/ko not_active IP Right Cessation
- 1991-11-15 US US08/078,154 patent/US5477022A/en not_active Expired - Fee Related
- 1991-11-15 BR BR919107163A patent/BR9107163A/pt not_active Application Discontinuation
- 1991-11-15 EP EP91920001A patent/EP0561812B1/de not_active Expired - Lifetime
- 1991-11-15 JP JP3518090A patent/JPH06503199A/ja active Pending
- 1991-11-15 ES ES91920001T patent/ES2079685T3/es not_active Expired - Lifetime
- 1991-11-15 WO PCT/DE1991/000889 patent/WO1992010868A1/de active IP Right Grant
- 1991-11-15 AU AU89078/91A patent/AU648613B2/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9831640B2 (en) | 2015-09-17 | 2017-11-28 | Federal-Mogul Ignition Gmbh | Method for manufacturing an ignition electrode for spark plugs and spark plug manufactured therewith |
Also Published As
| Publication number | Publication date |
|---|---|
| AU648613B2 (en) | 1994-04-28 |
| EP0561812A1 (de) | 1993-09-29 |
| JPH06503199A (ja) | 1994-04-07 |
| KR100215149B1 (ko) | 1999-08-16 |
| WO1992010868A1 (de) | 1992-06-25 |
| US5477022A (en) | 1995-12-19 |
| KR930703725A (ko) | 1993-11-30 |
| BR9107163A (pt) | 1993-11-03 |
| ES2079685T3 (es) | 1996-01-16 |
| DE4039778C1 (pt) | 1992-05-14 |
| AU8907891A (en) | 1992-07-08 |
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