EP0947595B1 - Verfahren zur Herstellung eines aus dispersionsverfestigtem Platinwerkstoff bestehenden, geschweissten Formkörpers, insbesondere eines Rohres - Google Patents
Verfahren zur Herstellung eines aus dispersionsverfestigtem Platinwerkstoff bestehenden, geschweissten Formkörpers, insbesondere eines Rohres Download PDFInfo
- Publication number
- EP0947595B1 EP0947595B1 EP99104851A EP99104851A EP0947595B1 EP 0947595 B1 EP0947595 B1 EP 0947595B1 EP 99104851 A EP99104851 A EP 99104851A EP 99104851 A EP99104851 A EP 99104851A EP 0947595 B1 EP0947595 B1 EP 0947595B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- platinum
- alloy
- process according
- dispersion
- noble 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
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12875—Platinum group metal-base component
Definitions
- the invention relates to a process for the preparation of a finely divided by, small particles made of base metal oxide dispersion strengthened platinum material, welded, in particular at least one inner wall having molding, in particular a pipe, a shaped body, in particular a tube, and the use of such a tube.
- Suitable base metals are, for example, chromium, beryllium, magnesium, aluminum, Silicon, the rare earths, thorium, uranium and metals of the first, second and third subgroup periods, Calcium to nickel, strontium to molybdenum and barium to tantalum.
- the High temperature resistant compound may be an oxide, a carbide, a nitride, a silicide Boride, a sulfide or any other compound that is due to interaction between a gaseous phase and the base metal can be formed.
- DD132673 relates to a process for the preparation of platinum appliances. To Production of the finished workpiece takes place at high temperatures In the air, for example, the user experiences internal oxidation of the finished device.
- platinum materials with a fine-grained equi-structure in the production used by components.
- This structure is created by a molten and cast Ingot formed (eg by forging, rolling) and then a recrystallization annealing is subjected.
- a recrystallization annealing is subjected.
- Upon subsequent welding of the material is formed after solidification of the metal in the weld a structure, rather with the unwanted Structure in cast ingots is comparable, as with the fine recrystallized structure of the remaining material.
- By reshaping the weld together with the rest of the material it is possible to achieve a homogenization of the microstructure after a recrystallization annealing treatment becomes visible, d. h., That the deformed and recrystallized material of the weld essentially corresponds to the rest of the material.
- the solidifying effect of the dispersoids will no longer be present.
- the structure in an annealing treatment or when used at high temperature (Grain size) in the largely oxide-free weld significantly coarser than in the rest Be material.
- the presence of the dispersoids leads to a considerable stabilization of the Grain structure).
- a blank of any shape, made with yttrium and zirconium and / or cerium-doped platinum-base metal alloy consists, first in one Vorform brought, in particular a sheet to a tube rounded and the respective Ends are welded together. Welding can be done either without additional metal or be carried out with a similar additional metal. "Same type of additional metal” means if, when welding, the addition of weld metal is required, this metal should be similar to the base material, d. h., With the specified base metal doping elements, here: zirconium and yttrium, cerium, should be alloyed.
- the mold still in the preform is in an oxidizing Heat treated medium to a minimum degree of oxidation of the base metal of 75% by weight, wherein preferably an atmosphere of air, oxygen, water vapor or a mixture from water vapor and hydrogen, noble gas, especially helium or argon, or nitrogen is used.
- the oxide-forming base metal components are very reactive, they may be necessary for the formation of the oxides Oxygen also other oxygenated compounds take such.
- the oxygen-containing medium must deliver it to the base metal components can, d. H. thermodynamically seen that the zirconium-yttrium and cerium oxides more stable must be as the oxygenated species in the medium. To ensure that not the Oxygen supply from the medium, but the diffusion in the platinum material rate-determining should be given a sufficient concentration of the oxygenated species be.
- the doped unoxidized material is first of all welded and then the oxide dispersoids by the heat treatment in a generated oxidizing medium.
- the internal oxidation becomes accelerated so far that the oxidation treatment on the molded and welded preform body can be carried out.
- the formation of the oxide particles is only slightly different from the grain structure of the platinum material affected, d. h., That the only significant difference between the weld and the Base material in the grain structure and not in the distribution of oxide particles.
- the mold is in the preform according to the desired Endform, for example, by rolling, forging or stretching accordingly shaped, wherein especially the Walzdschreibmaschine has proven during stripping.
- the formed preform body is subjected to a recrystallization annealing treatment subject to minimize dimensional changes in use.
- a recrystallization annealing treatment subject to minimize dimensional changes in use.
- the Uniformity of the structure between weld and base material through this treatment obvious.
- the welded structure treated in this way and the dispersion-strengthened one Platinum material differ only insignificantly in their properties from each other.
- the annealing treatment can be any oxide dispersion strengthened, otherwise unalloyed platinum at any Temperature ⁇ 600 ° C.
- PtRh, Pt-Au and Ptlr alloys - these are For platinum-precious metal alloys - temperatures ⁇ 900 ° C, often ⁇ 1000 ° C, are required.
- the annealing treatment can in principle also at even higher temperatures are carried out because the oxide dispersoids too strong Prevent grain enlargement. As a practicable upper limit has a temperature of 1400 ° C proved. If the material is exposed to too high a temperature before the Oxide dispersoids formed by internal oxidation, it may be undesirable Grobkom Struktur come.
- a reduction in wall thickness of at least 50% is achieved because of the properties the weld structure and the dispersion-hardened platinum material are virtually non-existent more different from each other.
- the deformed Preform a uniform structure on.
- the base metal content of the platinum-base metal alloy 0.005 to 1% by weight
- the dispersion strengthened platinum material is dispersion strengthened Platinum-rhodium alloy, dispersion strengthened platinum-iridium alloy or dispersion strengthened platinum-gold alloy.
- the platinum-base metal alloy with 0.1 to 0.2% by weight of zirconium and 0.01 to 0.05% by weight of yttrium and / or 0.05-0.2 Weight% cerium is doped and that the platinum-rhodium alloy is a PtRh10 alloy, the Platinum-gold alloy is a PtAu5 alloy and the platinum-iridium alloy is one Ptlr (1-10) -, in particular, a Ptlr (3-10) alloy is (PtXn means: (100-n) weight% Pt and n% by weight of element X).
- the shaped bodies produced by the process according to the invention in particular pipes, have the above-mentioned surprising and advantageous properties.
- a sheet (dimensions: 400 mm long, 350 mm wide, 3 mm thick) made of one with 0.18% by weight zirconium and 0.017 weight percent yttrium doped, unoxidized platinum material is rounded and Welded without additional metal over the length, in order in this way a Vorrohr with a Length of 400 mm and an inner diameter of about 111 mm.
- This Vorrohr becomes a heat treatment in an oxidizing medium, which is composed from dry air at a temperature of 1000 ° C for a period of 300 hours, until the oxygen content of the material is 0.073% by weight, on a cylindrical Mandrel with a diameter of 110 mm drawn from hardened tool steel and finally stretched to the desired length and wall thickness. The stretching takes place here through a pulling mandrel.
- the front pipe is to a wall thickness of 0.7 mm and a length formed by 1500 mm.
- the tube can be several longitudinal or Include round welds.
- This Way tubes up to a diameter of about 650 mm and a length of about 8000 mm are produced, and this information should not be considered as limiting.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Arc Welding In General (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
Claims (12)
- Verfahren zur Herstellung eines aus durch feinverteilte, kleine Teilchen aus Unedelmetalloxid dispersionsverfestigtem Platinwerkstoff bestehenden, geschweißten, insbesondere mindestens eine Innenwand aufweisenden Formkörpers, insbesondere eines Rohres, wobei das Unedelmetalloxid ein oder mehrere Oxide der Elemente Yttrium, Zirkonium und Cer ist, mit folgenden Verfahrensschritten:Formen und Verschweißen mindestens eines Teils, inbesondere eines Blechs, einer Platin-Unedelmetall-Legierung zu einem Vorformkörper, insbesondere zu einem Rohr,Wärmebehandlung des Vorformkörpers in einem oxidierenden Medium bis zu einem Mindestoxidationsgrad des Unedelmetalls von 75 Gewichts-%,Umformen des Vorformkörpers,Rekristallisationsglühbehandlung des umgeformten Vorformkörpers.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Glühbehandlung bei einer Mindesttemperatur von 600 °C durchgeführt wird.
- Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Glühbehandlung bei einer Maximaltemperatur von 1.400 °C durchgeführt wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass beim Umformen des Vorformkörpers, insbesondere beim Abstrecken, eine Reduzierung der Wandstärke von mindestens 50 % erreicht wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Unedelmetallgehalt der Platin-Unedelmetall-Legierung 0,005 - 1 Gewichts-% beträgt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der disperions verfestigte Platinwerkstoff aus dispersionsverfestigter Platin-Rhodium-Legierung, dispersionsverfestigter Platin-lridium-Legierung oder dispersionsverfestigter Platin-Gold-Legierung besteht.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Platin-Unedelmetall-Legierung mit 0,1 - 0,2 Gewichts-% Zirkonium und 0,01 - 0,05 Gewichts-% Yttrium und/oder mit 0,05 - 0,2 Gewichts-% Cer dotiert ist.
- Verfahren nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, dass die Platin-Rhodium-Legierung eine PtRh10-Legierung ist.
- Verfahren nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, dass die Platin-Gold-Legierung eine PtAu5-Legierung ist.
- Verfahren nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, dass die Platin-Iridium-Legierung eine Ptlr(1-10)-Legierung ist.
- Formkörper, insbesondere Rohr, hergestellt nach einem Verfahren nach einem oder mehreren der Ansprüche 1 bis 10.
- Verwendung eines Rohres nach Anspruch 11 zum Läutern von Glas.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813988 | 1998-03-28 | ||
DE19813988A DE19813988C1 (de) | 1998-03-28 | 1998-03-28 | Verfahren zur Herstellung eines aus durch feinverteilte, kleine Teilchen aus Unedelmetalloxid dispersionsverfestigtem Platinwerkstoff bestehenden, geschweißten, insbesondere mindestens eine Innenwand aufweisenden Formkörpers, isnbesondere eines Rohres |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0947595A2 EP0947595A2 (de) | 1999-10-06 |
EP0947595A3 EP0947595A3 (de) | 2002-09-11 |
EP0947595B1 true EP0947595B1 (de) | 2005-05-11 |
Family
ID=7862831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99104851A Expired - Lifetime EP0947595B1 (de) | 1998-03-28 | 1999-03-11 | Verfahren zur Herstellung eines aus dispersionsverfestigtem Platinwerkstoff bestehenden, geschweissten Formkörpers, insbesondere eines Rohres |
Country Status (5)
Country | Link |
---|---|
US (1) | US6129997A (de) |
EP (1) | EP0947595B1 (de) |
JP (1) | JP3302654B2 (de) |
CZ (1) | CZ298305B6 (de) |
DE (2) | DE19813988C1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8562664B2 (en) * | 2001-10-25 | 2013-10-22 | Advanced Cardiovascular Systems, Inc. | Manufacture of fine-grained material for use in medical devices |
DE10203418C1 (de) * | 2002-01-28 | 2003-02-27 | Heraeus Gmbh W C | Düsenwanne zum Ziehen von Glasfasern und Verwendung der Düsenwanne |
DE10203660A1 (de) * | 2002-01-30 | 2003-08-07 | Schott Glas | Bauteil, das für eine Anlage zum Erzeugen oder Aufbereiten von Glasschmelzen bestimmt ist |
US7611280B2 (en) * | 2003-12-16 | 2009-11-03 | Harco Laboratories, Inc. | EMF sensor with protective sheath |
US7131768B2 (en) * | 2003-12-16 | 2006-11-07 | Harco Laboratories, Inc. | Extended temperature range EMF device |
US7494619B2 (en) * | 2003-12-23 | 2009-02-24 | General Electric Company | High temperature alloys, and articles made and repaired therewith |
KR101243392B1 (ko) * | 2005-03-08 | 2013-03-13 | 아사히 가라스 가부시키가이샤 | 강화 백금제 중공관과 백금제 플랜지의 기밀 접합 방법 |
DE102007007873A1 (de) * | 2007-02-14 | 2008-08-21 | W.C. Heraeus Gmbh | Oxiddispersionsgehärteter, durch innere Oxidation hergestellter Pt-, PtRh- oder PtAu-Werkstoff mit hohem Oxidanteil und guter Duktilität |
JP5187925B2 (ja) * | 2008-05-28 | 2013-04-24 | 石福金属興業株式会社 | 導電材料 |
DE102009037226A1 (de) * | 2009-08-12 | 2011-02-17 | Umicore Ag & Co. Kg | Verfahren und Vorrichtung zum Verbinden von Edelmetallblech |
US20110135957A1 (en) * | 2009-12-04 | 2011-06-09 | Martin Herbert Goller | Platinum weld structures and methods |
US8881964B2 (en) | 2010-09-21 | 2014-11-11 | Ut-Battelle, Llc | Friction stir welding and processing of oxide dispersion strengthened (ODS) alloys |
JP5940848B2 (ja) * | 2012-03-16 | 2016-06-29 | 株式会社フルヤ金属 | 酸化物分散強化型白金の摩擦攪拌加工法 |
CN102952958B (zh) * | 2012-11-16 | 2014-05-21 | 无锡英特派金属制品有限公司 | 弥散强化铂与铂铑合金复合材料的制备方法 |
DE102013225187B4 (de) * | 2013-12-06 | 2018-07-19 | Heraeus Deutschland GmbH & Co. KG | Verfahren zur Bearbeitung einer dispersionsgehärteten Platinzusammensetzung |
JP6137011B2 (ja) * | 2014-03-25 | 2017-05-31 | トヨタ自動車株式会社 | 燃料電池用触媒の製造方法 |
EP3121297B1 (de) | 2015-07-23 | 2020-12-16 | Cartier International AG | Herstellungsverfahren einer schmuckkomponente aus platinlegierung |
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 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE132673C (de) * | ||||
US3139682A (en) * | 1960-06-24 | 1964-07-07 | Nicholas J Grant | Strength recovery of dispersion hardened alloys |
GB1139897A (en) * | 1965-01-15 | 1969-01-15 | Johnson Matthey Co Ltd | Improvements in and relating to the treatment of platinum group metals and alloys |
DE1533273A1 (de) * | 1966-01-15 | 1970-02-05 | Johnson Matthey Co Ltd | Verfahren zur Haertung von Platinmetallen |
DE1533267B1 (de) * | 1966-06-01 | 1970-03-05 | Heraeus Gmbh W C | Platinmetallegierung |
GB1280815A (en) * | 1968-07-12 | 1972-07-05 | Johnson Matthey Co Ltd | Improvements in and relating to the dispersion strengthening of metals |
US4002503A (en) * | 1970-09-29 | 1977-01-11 | Johnson, Matthey & Co., Limited | Treatment of metals and alloy |
US3709667A (en) * | 1971-01-19 | 1973-01-09 | Johnson Matthey Co Ltd | Dispersion strengthening of platinum group metals and alloys |
FR2429264A1 (fr) * | 1978-06-20 | 1980-01-18 | Louyot Comptoir Lyon Alemand | Procede de fabrication d'un platinoide comportant une phase dispersee d'un oxyde refractaire |
US4374668A (en) * | 1981-04-29 | 1983-02-22 | The United States Of America As Represented By The Secretary Of The Navy | Gold based electrical materials |
US4738389A (en) * | 1984-10-19 | 1988-04-19 | Martin Marietta Corporation | Welding using metal-ceramic composites |
US4819859A (en) * | 1987-12-18 | 1989-04-11 | Ppg Industries, Inc. | Lamination of oxide dispersion strengthened platinum and alloys |
JPH02127982A (ja) * | 1988-11-07 | 1990-05-16 | Tanaka Kikinzoku Kogyo Kk | 酸化物分散型白金製品の部材溶接方法 |
DE19758724C2 (de) * | 1997-04-08 | 2002-12-12 | Heraeus Gmbh W C | Dispersionsverfestigter Platin-Gold-Werkstoff, Verfahren zu seiner Herstellung und seine Verwendung |
-
1998
- 1998-03-28 DE DE19813988A patent/DE19813988C1/de not_active Expired - Fee Related
-
1999
- 1999-03-10 US US09/266,142 patent/US6129997A/en not_active Expired - Lifetime
- 1999-03-11 EP EP99104851A patent/EP0947595B1/de not_active Expired - Lifetime
- 1999-03-11 DE DE59912028T patent/DE59912028D1/de not_active Expired - Lifetime
- 1999-03-24 CZ CZ0104899A patent/CZ298305B6/cs not_active IP Right Cessation
- 1999-03-29 JP JP08631399A patent/JP3302654B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6129997A (en) | 2000-10-10 |
JP3302654B2 (ja) | 2002-07-15 |
CZ298305B6 (cs) | 2007-08-22 |
EP0947595A2 (de) | 1999-10-06 |
DE59912028D1 (de) | 2005-06-16 |
JPH11335754A (ja) | 1999-12-07 |
EP0947595A3 (de) | 2002-09-11 |
CZ104899A3 (cs) | 2000-04-12 |
DE19813988C1 (de) | 1999-10-28 |
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