EP2281905B1 - Augmentation de la rigidité de l'iridium - Google Patents

Augmentation de la rigidité de l'iridium Download PDF

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Publication number
EP2281905B1
EP2281905B1 EP10005962.5A EP10005962A EP2281905B1 EP 2281905 B1 EP2281905 B1 EP 2281905B1 EP 10005962 A EP10005962 A EP 10005962A EP 2281905 B1 EP2281905 B1 EP 2281905B1
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EP
European Patent Office
Prior art keywords
iridium
creep
mpa
creep rupture
boron
Prior art date
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Active
Application number
EP10005962.5A
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German (de)
English (en)
Other versions
EP2281905A1 (fr
Inventor
Uwe Hortig
Verena Baier
Harald Manhardt
Oliver Dr. Warkentin
David Francis Prof. Dr. 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.)
Heraeus Deutschland GmbH and Co KG
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Heraeus Deutschland GmbH and Co KG
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Publication date
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Publication of EP2281905A1 publication Critical patent/EP2281905A1/fr
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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
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon

Definitions

  • the invention relates to iridium with high creep rupture strength at high temperatures. Background and task
  • Iridium as one of the platinum group metals is used, for example, in crucibles for growing single crystals of refractory oxide melts, e.g. from Nd: YAG laser crystals, or used in components for the glass industry.
  • crucibles for growing single crystals of refractory oxide melts, e.g. from Nd: YAG laser crystals, or used in components for the glass industry.
  • a high creep and creep rupture strength of the iridium at high temperatures is of crucial importance.
  • tungsten and / or zirconium-containing iridium alloys are described for high temperature applications which additionally contain from 0.01 to 0.5% by weight of other elements such as molybdenum and hafnium and optionally ruthenium at from 0.01 to 10% by weight.
  • JP 56-81646 A Platinum-based jewelery alloys containing calcium boride or boron for increasing strength, especially hardness, after high temperature treatment such as brazing, are described.
  • EK Ohriner J. Alloys and Compounds 461 633-40 (2008 ) describes methods for cleaning iridium batches of various origins. These may contain a number of impurities in the ppm range according to Table I.
  • US3970450 is about improving the impact resistance of an Ir alloy with 0.3 wt% tungsten. This is achieved by doping with Al Fe Ni Rh and Th in amounts of up to 100 ppm.
  • the object of the present invention is the creep rupture strength of iridium to increase the temperature while maintaining the ductility and processability of the material, without using the said elements. It is accordingly advantageous if the material is also free of titanium.
  • the creep strength of the iridium doped in this way increases by 20 to 30% at a temperature of 1800 ° C. in comparison to undoped iridium by the addition of calcium and boron in the range of a few ppm.
  • the service lives are in a range of 1403.7 h (about 58.5 days) at 6.7 MPa to 0.73 h at 25 MPa and decrease with increasing voltage. As the strain rate increases with increasing stress, the elongations at break do not show a significant tendency.
  • Table 2 Values from the creep rupture curve of the undoped Ir batch Lifetime [h] Creep rupture strength [MPa] Strain rate [s -1 ] 10 16.9 6.5 ⁇ 10 -6 100 11.0 5.6 x 10 -7 1000 7.2 4.9 ⁇ 10 -8
  • the iridium ingot was then forged analogously to the undoped iridium batch in the comparative example and rolled to a final thickness of 1 mm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Materials For Medical Uses (AREA)

Claims (2)

  1. Procédé d'augmentation de la résistance au fluage de l'iridium, caractérisé en ce que 0,5 à 30 ppm de bore et 0,5 à 20 ppm de calcium sont ajoutés.
  2. Utilisation de calcium et de bore pour l'augmentation de la résistance au fluage de l'iridium, caractérisée en ce que 0,5 à 30 ppm de bore et 0,5 à 20 ppm de calcium sont ajoutés.
EP10005962.5A 2009-06-29 2010-06-10 Augmentation de la rigidité de l'iridium Active EP2281905B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009031168A DE102009031168A1 (de) 2009-06-29 2009-06-29 Festigkeitserhöhung von Iridium, Rhodium und ihren Legierungen

Publications (2)

Publication Number Publication Date
EP2281905A1 EP2281905A1 (fr) 2011-02-09
EP2281905B1 true EP2281905B1 (fr) 2015-08-12

Family

ID=42790582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10005962.5A Active EP2281905B1 (fr) 2009-06-29 2010-06-10 Augmentation de la rigidité de l'iridium

Country Status (4)

Country Link
US (1) US8613788B2 (fr)
EP (1) EP2281905B1 (fr)
JP (1) JP2011006791A (fr)
DE (1) DE102009031168A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3216883B1 (fr) 2016-03-07 2019-08-28 Heraeus Deutschland GmbH & Co. KG Alliage iridium-platine, article usiné constitué de celui-ci et procédés de leur production
EP3766997A1 (fr) * 2019-07-18 2021-01-20 The Swatch Group Research and Development Ltd Procédé de fabrication d'alliages de métaux précieux et alliages de métaux précieux ainsi obtenus
CN115319424B (zh) * 2022-09-16 2024-02-06 咸阳三毅有岩科技有限公司 一种薄壁铱坩埚的加工方法及薄壁铱坩埚

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE157709C (fr) 1904-02-22
US3918965A (en) 1974-04-26 1975-11-11 Us Energy Iridium-hafnium alloy
US3970450A (en) * 1975-07-16 1976-07-20 The United States Of America As Represented By The United States Energy Research And Development Administration Modified iridium-tungsten alloy
US4014692A (en) 1976-01-09 1977-03-29 Owens-Corning Fiberglas Corporation Platinum-rhodium alloys having low creep rates
US4123263A (en) * 1977-11-02 1978-10-31 Owens-Corning Fiberglas Corporation Platinum-rhodium alloys
JPS5681646A (en) 1979-12-08 1981-07-03 Tanaka Kikinzoku Kogyo Kk Platinum alloy for accessory
DD157709A1 (de) * 1981-03-31 1982-12-01 Klaus Schwarz Platinmetallegierung
US4444728A (en) 1982-01-21 1984-04-24 Engelhard Corporation Iridium-rhenium crucible
JPH07258767A (ja) 1994-03-18 1995-10-09 Tanaka Kikinzoku Kogyo Kk 硬質Ｐｔ金属又は硬質Ｐｔ合金の製造方法
JP3135224B2 (ja) 1996-05-10 2001-02-13 株式会社フルヤ金属 イリジウム基合金
JP3413488B2 (ja) 2000-04-20 2003-06-03 独立行政法人物質・材料研究機構 イリジウム基超合金
GB0216323D0 (en) 2002-07-13 2002-08-21 Johnson Matthey Plc Alloy
JP4722576B2 (ja) 2004-06-16 2011-07-13 新日鉄マテリアルズ株式会社 半導体実装用ボンディングワイヤの製造方法
DE102005032591B4 (de) 2005-07-11 2012-05-24 Heraeus Materials Technology Gmbh & Co. Kg Dotiertes Iridium mit verbesserten Hochtemperatureigenschaften
EP1983067A4 (fr) 2006-02-09 2012-11-07 Japan Science & Tech Agency Alliage à base d'iridium ayant une résistance à la chaleur élevée et une résistance élevée et procédé servant à produire celui-ci
JP2008019487A (ja) 2006-07-14 2008-01-31 Ishifuku Metal Ind Co Ltd Ｒｈ基合金
KR100831578B1 (ko) * 2006-12-05 2008-05-21 한국원자력연구원 원자력용 우수한 내식성을 갖는 지르코늄 합금 조성물 및이의 제조방법

Also Published As

Publication number Publication date
EP2281905A1 (fr) 2011-02-09
US20100329922A1 (en) 2010-12-30
DE102009031168A1 (de) 2010-12-30
US8613788B2 (en) 2013-12-24
JP2011006791A (ja) 2011-01-13

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