FR2404325A1 - Electrode, esp. suitable for aero engine sparking plugs - made of intermetallic cpds. providing long life at reduced cost - Google Patents
Electrode, esp. suitable for aero engine sparking plugs - made of intermetallic cpds. providing long life at reduced costInfo
- Publication number
- FR2404325A1 FR2404325A1 FR7826838A FR7826838A FR2404325A1 FR 2404325 A1 FR2404325 A1 FR 2404325A1 FR 7826838 A FR7826838 A FR 7826838A FR 7826838 A FR7826838 A FR 7826838A FR 2404325 A1 FR2404325 A1 FR 2404325A1
- Authority
- FR
- France
- Prior art keywords
- esp
- electrode
- imc
- electrodes
- long life
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/04—Alloys based on a platinum group metal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Spark Plugs (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
At least part of the surface of the electrode comprises >=1 intermetallic cpds. (IMC) with general formula AxBy; where A=Be, Al, Sc, Y, a lanthanide, Si, Ti, Zr, Hf, Th, V, Nb or Ta; and B=Ru, Pd, Ir, or Pt, and where x and y are >=1, esp. where x+y=5 max. The electrode may employ a mixt. of two or more IMC and/or at least part of its working surface may be coated with one or more of the IMC specified above, esp. using a coating 2-15 mu m thick. A pref. device for igniting a mixt. of combustible gases consists of two or more of the above electrodes sepd. by an insulator o a semiconductor material, where sparks travel between the exposed working surfaces of the electrodes. Used e.g. in spraking plugs for aero-engines; snow vehicles, chain saws, etc. The electrodes have longer life and lower cost than Ru which is one conventional material used in high duty sparking plugs.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3957777 | 1977-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2404325A1 true FR2404325A1 (en) | 1979-04-20 |
Family
ID=10410310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7826838A Withdrawn FR2404325A1 (en) | 1977-09-22 | 1978-09-19 | Electrode, esp. suitable for aero engine sparking plugs - made of intermetallic cpds. providing long life at reduced cost |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5462923A (en) |
| BE (1) | BE870559A (en) |
| DE (1) | DE2840995A1 (en) |
| DK (1) | DK418878A (en) |
| FR (1) | FR2404325A1 (en) |
| IT (1) | IT1099127B (en) |
| NL (1) | NL7809455A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ270219A (en) * | 1993-12-23 | 1997-03-24 | Mintek | Spark plug electrode of intermetallic compound |
| DE102006015167B3 (en) * | 2006-03-30 | 2007-07-19 | W.C. Heraeus Gmbh | Production of a wire or strip used e.g. as an electrode in spark plugs comprises producing an intermetallic compound, grinding, mixing with metal powder, feeding the mixture into a tube and deforming the filled tube |
| JP4682995B2 (en) * | 2007-03-06 | 2011-05-11 | 株式会社デンソー | Plasma ignition device and manufacturing method thereof |
| US8445886B2 (en) * | 2009-02-02 | 2013-05-21 | Panasonic Corporation | Nonvolatile memory element, nonvolatile memory device, nonvolatile semiconductor device, and method of manufacturing nonvolatile memory element |
| WO2012033160A1 (en) * | 2010-09-09 | 2012-03-15 | 独立行政法人物質・材料研究機構 | Alloy material for high temperature service having excellent oxidation resistance properties, and process for production thereof |
| JP6035177B2 (en) | 2012-08-20 | 2016-11-30 | 株式会社デンソー | Spark plug for internal combustion engine |
-
1978
- 1978-09-18 BE BE190550A patent/BE870559A/en unknown
- 1978-09-18 NL NL7809455A patent/NL7809455A/en not_active Application Discontinuation
- 1978-09-19 FR FR7826838A patent/FR2404325A1/en not_active Withdrawn
- 1978-09-21 IT IT7827925A patent/IT1099127B/en active
- 1978-09-21 DK DK418878A patent/DK418878A/en unknown
- 1978-09-21 DE DE19782840995 patent/DE2840995A1/en not_active Withdrawn
- 1978-09-22 JP JP11735178A patent/JPS5462923A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT7827925A0 (en) | 1978-09-21 |
| NL7809455A (en) | 1979-03-26 |
| JPS5462923A (en) | 1979-05-21 |
| DK418878A (en) | 1979-03-23 |
| IT1099127B (en) | 1985-09-18 |
| DE2840995A1 (en) | 1979-04-05 |
| BE870559A (en) | 1979-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |