EP0182046A1 - Eléments de construction pour environnements contenant des isotopes d'hydrogène à l'état gazeux - Google Patents

Eléments de construction pour environnements contenant des isotopes d'hydrogène à l'état gazeux Download PDF

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Publication number
EP0182046A1
EP0182046A1 EP85112167A EP85112167A EP0182046A1 EP 0182046 A1 EP0182046 A1 EP 0182046A1 EP 85112167 A EP85112167 A EP 85112167A EP 85112167 A EP85112167 A EP 85112167A EP 0182046 A1 EP0182046 A1 EP 0182046A1
Authority
EP
European Patent Office
Prior art keywords
nickel
oxide layer
manganese
content
parts
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Withdrawn
Application number
EP85112167A
Other languages
German (de)
English (en)
Inventor
Walter Bergmann
Horst Ing. Grad. Ebinger
Günther Dipl.-Chem. Luthardt
Volker Portscher
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.)
Nukem GmbH
Original Assignee
Nukem GmbH
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 Nukem GmbH filed Critical Nukem GmbH
Publication of EP0182046A1 publication Critical patent/EP0182046A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon

Definitions

  • the invention relates to structural parts for gaseous media containing hydrogen isotopes, in particular pipes for process heat transport, made of nickel-based alloys with 40 to 70% nickel, 15 to 30% chromium, 0 to 20% cobalt, 5 to 10% molybdenum and 0 to 20% iron.
  • construction materials are required which, in addition to good high-temperature strength at 850 to 1100 ° C and resistance to oxidation, must also have a high resistance to permeating hydrogen atoms.
  • energy required for coal refining from nuclear sources, for example from a high-temperature reactor with helium as the heat transfer medium. Since this heat transfer medium can also contain the radioactive hydrogen isotope tritium, the passage of which into the product gas of the coal refining must be prevented as far as possible, high permeation resistance values at high temperatures are required for the construction materials that can be used.
  • the permeation values for hydrogen or tritium are very close to one another in the case of known high-temperature materials, which usually contain nickel and chromium, and are inadmissibly high, especially when used in the nuclear field. It has therefore already been proposed to provide such high-temperature materials with a hydrogen permeation-inhibiting oxide layer.
  • DE-OS 31 04 112 describes an oxide layer which is generally produced on all high-temperature alloys.
  • the disadvantage is, however, that no defined hydrogen permeation inhibition can be achieved, so that a practical use of such materials provided with an oxide layer is problematic due to strongly fluctuating permeation inhibition, as well as the adaptation of the oxide layer thickness to the respective permeation problem when using the entire spectrum of high-temperature alloys.
  • the inhibitory effects of the oxide layers differ only insignificantly from the substrate. With the same substrate quality within the specified frame composition of the high-temperature alloy and with the same oxide layer thickness, depending on the permitted fluctuation in the alloy composition and the permitted contamination, there are still some. determine significant fluctuations in the permeation inhibiting effect.
  • the oxide layers described in the cited document and also in DE-OSes 31 08 160 and 32 15 314 are therefore suitable as anti-corrosion layers, but not reliably as a hydrogen permeation barrier.
  • the present invention was therefore based on the object of designing components for gaseous media containing hydrogen isotopes, in particular pipes for process heat transfer from nickel-based alloys with 40 to 70% nickel, 15 to 30% chromium, 0 to 20% cobalt, 5 to 10% molybdenum and 0 to create up to 20% iron, which lead to the optimal formation of permeation inhibition barriers of defined and therefore selectively usable high inhibition quality.
  • the object was achieved in that the construction parts at least in the surface zone Contain 0.5 to 0.8% manganese and the parts are provided with a 1 to 10 ⁇ m thick oxide layer through a temperature treatment at 850 to 1000 ° C in an oxidizing atmosphere in several stages during a treatment time of 15 to 45 hours.
  • the structural parts are first surface-coated with a 0.1 to 1.0 ⁇ m thick manganese coating, e.g. by vapor deposition, and then the manganese content of 0.5 to 0.8% in the surface zone of the structural parts is adjusted by diffusion treatment, for example at 950 ° C., after which the oxide layer is formed.
  • the oxide layer is formed in three stages and the treatment time for a nickel-based alloy with a higher iron content and a lower cobalt content, e.g. 19% Fe and 2% Co, approx. 5 hours per step and with a nickel-based alloy without iron content and a higher cobalt content, e.g. 0% Fe and 12% Co, is about 15 hours per step, the oxidizing atmosphere consisting of hydrogen-water vapor mixtures or pure water vapor.
  • This three-stage treatment heals layer defects that have arisen in the meantime and leads to an oxide layer of good quality.
  • two, four or more treatment stages can be used, the total time of which is between about 15 to about 45 hours.
  • CO or CO 2 are also suitable as the oxidizing atmosphere.
  • the structural part in question is cleaned and expediently subjected to hydrogen annealing. In this way, the structural part becomes shiny on the surface and the surface deformed by the surface treatment is recrystallized.
  • the pretreatment includes a mechanical grinding process 1200 grit and a hydrogen anneal of one hour at 1000 ° C. This was followed by three times oxidation of 5 hours each with pure steam. The samples were then tested for their permeation inhibiting effect.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Heat Treatment Of Articles (AREA)
EP85112167A 1984-10-19 1985-09-25 Eléments de construction pour environnements contenant des isotopes d'hydrogène à l'état gazeux Withdrawn EP0182046A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3438339A DE3438339C1 (de) 1984-10-19 1984-10-19 Verfahren zur Herstellung von Konstruktionsteilen fuer gasfoermige Wasserstoffisotope enthaltende Medien
DE3438339 1984-10-19

Publications (1)

Publication Number Publication Date
EP0182046A1 true EP0182046A1 (fr) 1986-05-28

Family

ID=6248294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112167A Withdrawn EP0182046A1 (fr) 1984-10-19 1985-09-25 Eléments de construction pour environnements contenant des isotopes d'hydrogène à l'état gazeux

Country Status (4)

Country Link
US (1) US4602968A (fr)
EP (1) EP0182046A1 (fr)
JP (1) JPS61104064A (fr)
DE (1) DE3438339C1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0814633B2 (ja) * 1989-05-24 1996-02-14 株式会社日立製作所 核融合炉
US5078963A (en) * 1990-02-14 1992-01-07 Mallen Ted A Method of preventing fires in engine and exhaust systems using high nickel mallen alloy
JP4042362B2 (ja) * 2000-08-11 2008-02-06 住友金属工業株式会社 Ｎｉ基合金製品とその製造方法
US6692838B2 (en) * 2002-03-15 2004-02-17 Exxonmobil Research And Engineering Company Metal dusting resistant alloys
US20060037660A1 (en) * 2004-08-20 2006-02-23 Kinnally Kevin J Hydrogen conduit and process for producing same
JP4529761B2 (ja) * 2005-03-30 2010-08-25 住友金属工業株式会社 Ｎｉ基合金の製造方法
US7354660B2 (en) * 2005-05-10 2008-04-08 Exxonmobil Research And Engineering Company High performance alloys with improved metal dusting corrosion resistance

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2403128A (en) * 1942-06-24 1946-07-02 Westinghouse Electric Corp Heat resistant alloys
US3573901A (en) * 1968-07-10 1971-04-06 Int Nickel Co Alloys resistant to stress-corrosion cracking in leaded high purity water
US4031921A (en) * 1975-09-09 1977-06-28 The United States Of America As Represented By The United States Energy Research And Development Administration Hydrogen-isotope permeation barrier
US4050250A (en) * 1975-10-30 1977-09-27 Eaton Corporation Heat transfer element
US4129464A (en) * 1977-08-24 1978-12-12 Cabot Corporation High yield strength Ni-Cr-Mo alloys and methods of producing the same
JPS6018748B2 (ja) * 1977-12-12 1985-05-11 日本原子力研究所 鉄鋼材料面における水素透過量を減少させる方法
DE3104112C2 (de) * 1981-02-06 1984-12-13 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Verfahren zur Herstellung von Oxydschichten
DE3215314C2 (de) * 1982-04-23 1984-12-06 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Verfahren zur Herstellung von Oxidschichten auf einer Titanbasislegierungsoberfläche
DE3108160C2 (de) * 1981-02-06 1984-12-06 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Verfahren zur Herstellung von Oxidschichten auf chrom- und/oder nickellegierten Stählen
JPS5956567A (ja) * 1982-09-25 1984-04-02 Toshiba Corp 耐熱部材の製造方法
US4555275A (en) * 1984-10-19 1985-11-26 Grumman Aerospace Corporation Hydrogen permeation protection for metals

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 100, Nr. 6, 6. Februar 1984, Seite 234, Nr. 38349s, Columbus, Ohio, US; A.D. LE CLAIRE: "Permeation of gases through solids. III. An assessment of measurements of the steady-state permeability of hydrogen and its isotopes through nickel and through several high-nickel commercial alloys and steels", & REPORT 1983, AERE-R-10846, 35 pp. *
CHEMICAL ABSTRACTS, Band 101, Nr. 16, 15. Oktober 1984, Seite 429, Nr. 137596x, Columbus, Ohio, US; A.D. LE CLAIRE: "Permeation of gases through solids. III - an assessment of measurements of the steady-state permeability of hydrogen and its isotopes through nickel and through several high-Ni commercial alloys and steels", & DIFFUS. DEFECT DATA 1984, 35, 1-36 *
CHEMICAL ABSTRACTS, Band 99, Nr. 24, 12. Dezember 1983, Seite 258, Nr. 199256k, Columbus, Ohio, US; E.M. EDGE et al.: "Permeability of hydrogen isotopes through nickel-base alloys", & REPORT 1983, SAN-83-0500; ORDER NO. DE83009672, 21pp. *

Also Published As

Publication number Publication date
US4602968A (en) 1986-07-29
DE3438339C1 (de) 1986-01-30
JPS61104064A (ja) 1986-05-22

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Inventor name: PORTSCHER, VOLKER

Inventor name: LUTHARDT, GUENTHER, DIPL.-CHEM.

Inventor name: EBINGER, HORST, ING. GRAD.

Inventor name: BERGMANN, WALTER