EP1964938B1 - Oxiddispersionsgehärteter, durch innere Oxidation hergestellter Pt, PtRh- oder PtAu-Werkstoff mit hohem Oxidanteil und guter Duktilität - Google Patents

Oxiddispersionsgehärteter, durch innere Oxidation hergestellter Pt, PtRh- oder PtAu-Werkstoff mit hohem Oxidanteil und guter Duktilität Download PDF

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Publication number
EP1964938B1
EP1964938B1 EP08000288A EP08000288A EP1964938B1 EP 1964938 B1 EP1964938 B1 EP 1964938B1 EP 08000288 A EP08000288 A EP 08000288A EP 08000288 A EP08000288 A EP 08000288A EP 1964938 B1 EP1964938 B1 EP 1964938B1
Authority
EP
European Patent Office
Prior art keywords
weight
dispersion
spark plug
plug electrode
platinum
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.)
Not-in-force
Application number
EP08000288A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1964938A1 (de
Inventor
Harald Manhardt
Tanja Eckardt
David Francis Lupton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WC Heraus GmbH and Co KG
Original Assignee
WC Heraus GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Priority to SI200830033T priority Critical patent/SI1964938T1/sl
Priority to PL08000288T priority patent/PL1964938T3/pl
Publication of EP1964938A1 publication Critical patent/EP1964938A1/de
Application granted granted Critical
Publication of EP1964938B1 publication Critical patent/EP1964938B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1078—Alloys containing non-metals by internal oxidation of material in solid state
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0021—Matrix based on noble metals, Cu or alloys thereof

Definitions

  • the invention relates to a finely distributed, small particles of base metal dispersion dispersion strengthened platinum material as a spark plug electrode tip.
  • Out DE 31 02 342 C2 is a stabilized alloy of a comstabilizing constituent and, apart from impurities, gold and one or more platinum group metals as the remainder, the group of platinum metals being platinum, rhodium, palladium, ruthenium, iridium, the stabilizing constituent is an oxide, Carbide, nitride and / or silicide of scandium, yttrium, thorium, zirconium, hafnium, titanium, aluminum or a lanthanide, its content is not more than 0.5 wt .-% and the gold content in the range of 2 to 10 wt .-% lies.
  • DE 100 46 456 describes a dispersion strengthened Au-free Pt material having either 0.01 to 0.5 wt% Sc or 0.05 to 0.5 wt% Sc mixed with Zr, Y or Ce.
  • the object of the present invention is to save Pt at Zündkerzenspitzen without loss of quality.
  • the solution is given in the claims.
  • a spark plug electrode tip of dispersion strengthened platinum material according to the invention consists of less than 99 wt .-%, in particular between 95 and 99 wt .-% of a noble metal component of platinum or a platinum alloy consisting of at least 55th % By weight of Pt, 0 to 30% by weight of Rh, 0 to 15% by weight of Au and 0 to 40% by weight of Pd, and the remainder by more than 1% by weight, in particular 1 to 5% by weight.
  • % Dispersion hardener comprising at least 90% by weight of oxygen-oxidized metals selected from the group Ce, Zr, Sc and Y.
  • the dispersion hardener has at least 90% oxidized Ce or Zr, in the case of Zr additionally Sc or Y. Based on the body volume can be inventively without loss of quality over 10 vol .-% precious metal, in particular Pt save.
  • the dispersion consolidator consists of at least 90% by weight of oxygen oxidized Ce, in particular when the platinum alloy has 0 to 30% by weight of Au.
  • the dispersion consolidator consists of at least 90% by weight Zr oxidized with oxygen as the main component of the dispersion consolidator and Sc or Y as a minor component of the dispersion consolidator.
  • Dispersion-strengthened platinum materials having from 1 to 4% by weight of Zr and from 0.05 to 1% by weight of Sc or Y, in which the sum of Sc and Y amounts to not more than 1% by weight, have proven useful.
  • the mass ratio of Zr to the sum of Sc and Y is preferably 2: 1 to 50: 1, in particular 5: 1 to 20: 1.
  • a solid body of a metal alloy is converted by at least 90% oxidation of the dispersion-strengthening metals into a dispersion-strengthened platinum material.
  • Dispersion-strengthened platinum materials according to the invention are extremely resistant to wear and are suitable for use under abrasive conditions.
  • Spark plug electrode tips according to the invention comprising the platinum material which has been dispersion-strengthened according to the invention, are particularly durable.
  • the ingot was planed to eliminate casting defects and forged at 1100 ° C into a 10 mm x 65 mm cross section plate. Subsequently, the plate was rolled at 1000 ° C to a 4 mm thick sheet. According to the patents DE 197 58 724 C2 and DE 100 46 456 C2 As indicated procedure, the sheet was aged for 14 days at 1000 ° C under air atmosphere. By hot gas extraction analysis (LECO method), the oxygen content was determined to be 4380 ppm. With complete oxidation of the Zr doping to ZrO 2 , the Sc doping to Sc 2 O 3 and the Y doping to Y 2 O 3 , the oxygen content would have reached 4430 ppm.
  • LECO method hot gas extraction analysis
  • the bar was rolled at 1000 ° C to a square wire (4 mm x 4 mm).
  • the wire was paged for 10 days at 1000 ° C under air atmosphere.
  • the oxygen content was determined to be 4500 ppm. With complete oxidation of the Zr doping to ZrO 2 , the Sc doping to Sc 2 O 3 and the Y doping to Y 2 O 3 , the oxygen content would have reached 4530 ppm.
  • the structure of the annealed wire showed a uniform distribution of round and elongated oxide particles with dimensions between ⁇ 1 ⁇ m and 3 ⁇ m at intervals of about 1 up to 3 ⁇ m.
  • An analogously prepared wire of an oxide dispersion hardened platinum material according to DE 100 46 456.4 with 1800 ppm Zr, 150 ppm Sc, 170 ppm Y and 770 ppm oxygen had a hardness of 155 and after annealing for one hour at 1000 ° C a hardness of 67.
  • the density was increased by water displacement (according to Archimedes) with 20, 42 g / cm 3 , corresponding to a weight reduction of 4.8% for a given volume.
  • the material is 1.7% by weight of base metal oxide, resulting in a total precious metal spam of 6.5% by weight per unit volume.
  • spark plug electrode tips for use in cars were made.
  • Example 1 The sheet of Example 1 was annealed at 1000 ° C for 30 minutes under an air atmosphere, cold rolled to a thickness of 0.5 mm and annealed again at 1000 ° C for 30 minutes. From the sheet was by forming and welding by the tungsten inert gas method (see http://www.gleisbau-welt.de/site/schweissen/schweisshabilit.htm) using conventional PtRh10 wire as welding filler a lining for a Ceramic stirrer made. The stirrer was used to perform melt tests on borosilicate glasses in an inductively heated PtRh10 crucible at 1550 ° C.
  • the sheet was aged for 14 days at 1000 ° C under air atmosphere.
  • the oxygen content was determined to be 2250 ppm.
  • the oxygen content would have reached 2360 ppm.
  • the sheet was rolled at 1050 ° C to a thickness of 2.5 mm and annealed at 1100 ° C for 2 hours under an air atmosphere. Subsequently, the sheet was cold rolled to a thickness of 0.8 mm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Powder Metallurgy (AREA)
  • Spark Plugs (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Catalysts (AREA)
EP08000288A 2007-02-14 2008-01-09 Oxiddispersionsgehärteter, durch innere Oxidation hergestellter Pt, PtRh- oder PtAu-Werkstoff mit hohem Oxidanteil und guter Duktilität Not-in-force EP1964938B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200830033T SI1964938T1 (sl) 2007-02-14 2008-01-09 Pt,PtRh- ALI PtAu- MATERIAL Z VISOKO VSEBNOSTJO OKSIDOV IN DOBRO DUKTILNOSTJO, IZDELAN Z UTRJEVANJEM DISPERZIJE OKSIDOV S POMOÄŚJO NOTRANJE OKSIDACIJE
PL08000288T PL1964938T3 (pl) 2007-02-14 2008-01-09 Materiał zawierający Pt, PtRh lub PtAu, wzmocniony metodą dyspersji tlenkowej, wytworzony przez wewnętrzne utlenienie, o wysokiej zawartości tlenków i dobrej ciągliwości

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007007873A DE102007007873A1 (de) 2007-02-14 2007-02-14 Oxiddispersionsgehärteter, durch innere Oxidation hergestellter Pt-, PtRh- oder PtAu-Werkstoff mit hohem Oxidanteil und guter Duktilität

Publications (2)

Publication Number Publication Date
EP1964938A1 EP1964938A1 (de) 2008-09-03
EP1964938B1 true EP1964938B1 (de) 2010-03-24

Family

ID=39427726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08000288A Not-in-force EP1964938B1 (de) 2007-02-14 2008-01-09 Oxiddispersionsgehärteter, durch innere Oxidation hergestellter Pt, PtRh- oder PtAu-Werkstoff mit hohem Oxidanteil und guter Duktilität

Country Status (12)

Country Link
US (1) US8226855B2 (ko)
EP (1) EP1964938B1 (ko)
JP (1) JP5183232B2 (ko)
KR (1) KR101494005B1 (ko)
CN (1) CN101348872A (ko)
AT (1) ATE462020T1 (ko)
DE (2) DE102007007873A1 (ko)
DK (1) DK1964938T3 (ko)
ES (1) ES2342340T3 (ko)
PL (1) PL1964938T3 (ko)
PT (1) PT1964938E (ko)
SI (1) SI1964938T1 (ko)

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JP5314141B2 (ja) * 2010-04-02 2013-10-16 日本特殊陶業株式会社 スパークプラグ
JP4965696B2 (ja) * 2010-10-21 2012-07-04 田中貴金属工業株式会社 酸化物分散強化型白金合金の製造方法
WO2012077660A1 (ja) 2010-12-07 2012-06-14 株式会社 日立ハイテクノロジーズ 電気化学測定用電極、電気化学測定用電解セルおよび電気化学測定用分析装置ならびにそれらの製造方法
WO2012124846A1 (ko) * 2011-03-17 2012-09-20 희성금속 주식회사 산화물 분산강화형 백금-로듐 합금의 제조방법
KR101321945B1 (ko) * 2012-03-27 2013-10-28 희성금속 주식회사 건식법을 이용한 산화물 분산강화형 백금-금 합금 분말의 제조방법
US9231380B2 (en) * 2012-07-16 2016-01-05 Federal-Mogul Ignition Company Electrode material for a spark plug
KR20150028037A (ko) * 2013-09-05 2015-03-13 희성금속 주식회사 백금-로듐-산화물계 합금의 제조방법
DE102013225187B4 (de) 2013-12-06 2018-07-19 Heraeus Deutschland GmbH & Co. KG Verfahren zur Bearbeitung einer dispersionsgehärteten Platinzusammensetzung
CN108165812B (zh) * 2017-11-16 2019-09-24 重庆材料研究院有限公司 一种用于铂基器皿的弥散强化型材料及其制备方法和应用
CN110387483B (zh) * 2019-07-25 2021-02-09 无锡英特派金属制品有限公司 一种Pt-Au合金的制造方法
EP3971311B1 (de) 2020-09-17 2022-07-06 Heraeus Deutschland GmbH & Co. KG Verbesserte, dispersionsgehärtete edelmetalllegierung
EP3978884B1 (de) 2020-10-02 2024-05-29 Heraeus Precious Metals GmbH & Co. KG Draht mit platin-zusammensetzung zur kontaktierung von temperatursensoren
EP4282526A1 (de) 2022-05-25 2023-11-29 Heraeus Deutschland GmbH & Co. KG Katalysatornetz mit einem edelmetalldraht aus einer dispersionsverfestigten edelmetalllegierung

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Also Published As

Publication number Publication date
CN101348872A (zh) 2009-01-21
ES2342340T3 (es) 2010-07-05
US20100276646A1 (en) 2010-11-04
DE102007007873A1 (de) 2008-08-21
KR20080076759A (ko) 2008-08-20
PT1964938E (pt) 2010-06-23
DE502008000459D1 (de) 2010-05-06
PL1964938T3 (pl) 2010-08-31
DK1964938T3 (da) 2010-06-14
US8226855B2 (en) 2012-07-24
JP2008196052A (ja) 2008-08-28
ATE462020T1 (de) 2010-04-15
SI1964938T1 (sl) 2010-07-30
JP5183232B2 (ja) 2013-04-17
EP1964938A1 (de) 2008-09-03
KR101494005B1 (ko) 2015-02-16

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