EP1299567A1 - Method for producing dispersion strengthened metal products - Google Patents

Method for producing dispersion strengthened metal products

Info

Publication number
EP1299567A1
EP1299567A1 EP01941379A EP01941379A EP1299567A1 EP 1299567 A1 EP1299567 A1 EP 1299567A1 EP 01941379 A EP01941379 A EP 01941379A EP 01941379 A EP01941379 A EP 01941379A EP 1299567 A1 EP1299567 A1 EP 1299567A1
Authority
EP
European Patent Office
Prior art keywords
metal
pipe
powder
alloy powder
matrix
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Withdrawn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
EP01941379A
Other languages
German (de)
French (fr)
Inventor
Sven Wir N
Lars Jerreg Rd
Bengt Jonason
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.)
Elektrokoppar AB
Original Assignee
Elektrokoppar AB
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 Elektrokoppar AB filed Critical Elektrokoppar AB
Publication of EP1299567A1 publication Critical patent/EP1299567A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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

Abstract

The invention concerns a method for producing elongated dispersion strengthened metal alloy products. A surface oxidised metal alloy powder is provided in a pipe, wherein the metal alloy powder is an alloy of a matrix metal and at least one solute metal having a negative energy of oxide formation exceeding that of the matrix metal. The powder in the pipe is compacted and the powder-containing pipe is extruded into an elongated product, while simultaneously being internally oxidised, and is thereafter subjected to an elevated temperature to complete the internal oxidation.

Claims

9 CLAIMS
1. A method for producing dispersion strengthened metal alloy products comprising the steps of: a) providing a surface oxidised metal alloy powder in a pipe, wherein the metal alloy powder is an alloy of a matrix metal and at least one solute metal having a negative energy of oxide formation exceeding that of the matrix metal ; b) compacting the powder in the pipe; c) extruding the powder containing pipe into an elongated product, thereby increasing the product temperature starting an internal oxidation; d) and subjecting the extruded product to an eleva- ted temperature to complete the internal oxidation.
2. Method according to claim 1, wherein the powder containing pipe is produced by: a) pouring the surface oxidised metal alloy powder into an elongated, preferably U-shaped, foil of a matrix metal; b) sealing the foil, enclosing the metal alloy powder, to form a pipe.
3. Method according to claim 2, wherein the thickness of the foil is 0,001-0,2 times the radius of the pipe to be formed.
4. Method according to claim 1,2 or 3, wherein the metal alloy powder is an alloy of a matrix metal and at least one solute metal having a negative energy of oxide formation exceeding that of the matrix metal with at least 200 kJ per gram of oxygen at 25°C.
5. Method according to any one of the claims 1-4, wherein the same metal is used in the pipe or foil as in the matrix of the metal alloy powder.
6. Method according to any one of the claims 1-5, wherein the extrusion causes the product temperature to increase to 400-1050°C, preferably 500-800°C. 10
7. Method according to any one of the claims 1-6, wherein the product is subjected to an elevated temperature in a non-oxidising atmosphere for 1 second-15 minutes, preferably 1 second-2 minutes and most prefera- bly 1 second-1 minute.
8. Method according to any one of the claims 1-7, wherein the metal alloy powder is produced by gas atomisation.
9. Method according to any one of the claims 1-8, wherein the particle size of the surface oxidised alloy powder is at least 10 μm, preferably at least 30 μm and less than 200 μm, preferably less than 150 μm.
10. Method according to any one of the claims 1-9, wherein the matrix metal is Cu, Ag or Ni and the solute metal Al , Mg, Zr, Be or Si.
11. Method according to any one of the claims 1-10, wherein the solute metal is present in the alloy in the proportion of 0,01-6% by weight, preferably 0,1-1,0% by weight of the alloy.
12. A method according to any one of the claims 1-11, wherein the method is performed continuously.
EP01941379A 2000-06-15 2001-06-13 Method for producing dispersion strengthened metal products Withdrawn EP1299567A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0002253 2000-06-15
SE0002253A SE518515C2 (en) 2000-06-15 2000-06-15 Process for making dispersion-cured metal products
PCT/SE2001/001340 WO2001096622A1 (en) 2000-06-15 2001-06-13 Method for producing dispersion strengthened metal products

Publications (1)

Publication Number Publication Date
EP1299567A1 true EP1299567A1 (en) 2003-04-09

Family

ID=20280113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01941379A Withdrawn EP1299567A1 (en) 2000-06-15 2001-06-13 Method for producing dispersion strengthened metal products

Country Status (4)

Country Link
EP (1) EP1299567A1 (en)
AU (1) AU2001274738A1 (en)
SE (1) SE518515C2 (en)
WO (1) WO2001096622A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB898497A (en) * 1959-08-19 1962-06-14 Gen Electric Co Ltd Improvements in or relating to the manufacture of metallic compositions
SE316623B (en) * 1960-06-22 1969-10-27 Crucible Steel International S
FR1270661A (en) * 1960-07-21 1961-09-01 Commissariat Energie Atomique New process for the preparation of masses based on compressed magnesium powder
DE2355122C3 (en) * 1973-11-01 1979-11-08 Scm Corp., New York, N.Y. (V.St.A.) Process for the production of a dispersion strengthened metal
US4315777A (en) * 1979-08-07 1982-02-16 Scm Corporation Metal mass adapted for internal oxidation to generate dispersion strengthening
FR2581658B1 (en) * 1985-05-10 1987-07-17 Centre Nat Rech Scient NEW ALLOYS WITH HIGH ELECTRICAL AND MECHANICAL PERFORMANCE, THEIR MANUFACTURE AND THEIR APPLICATIONS IN PARTICULAR IN THE ELECTRICAL, ELECTRONIC AND CONNECTIC FIELDS
US6254660B1 (en) * 1997-11-28 2001-07-03 Saint-Gobain Recherche Corrosion-resistant alloy, preparation process and article made from the alloy

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0196622A1 *

Also Published As

Publication number Publication date
AU2001274738A1 (en) 2001-12-24
SE518515C2 (en) 2002-10-15
SE0002253L (en) 2001-12-16
WO2001096622A1 (en) 2001-12-20
SE0002253D0 (en) 2000-06-15

Similar Documents

Publication Publication Date Title
MXPA06000361A (en) Method for the production of fine metal powder, alloy powder and composite powder.
EP1712645A4 (en) Process for producing alloy containing dispersed oxide
EP0351056A3 (en) Sintering metal powders into structures without sintering aids
UA91494C2 (en) Method for producing of metal powders or metal hidride powders of elements ti, zr, hf, v, nb, ta or cr
CA2438720A1 (en) Magnesium alloy material and method of manufacturing the alloy material
CA2151300A1 (en) Method of making an aluminium alloy brazing agent containing a flux
JP2002504188A (en) Manufacturing method for high density high carbon sintered metal powder steel parts
US9779854B2 (en) Method for producing a semifinished product for electrical contacts and contact piece
CA2160857A1 (en) Porous metal body and process for producing same
GB625364A (en) Improvements relating to light metal bodies and methods of manufacturing the same
BR0210388B1 (en) A method for preparing high density compacts for soft magnetic applications in alternating magnetic fields.
EP1299567A1 (en) Method for producing dispersion strengthened metal products
JPH01283335A (en) Aluminum alloy for vacuum
JPS59500222A (en) Method for producing oxygen-free dispersion-strengthened copper
WO2014208419A1 (en) Electrical contact material and method for manufacturing same
US3506437A (en) Method for making silver/cadmium oxide contact materials
EP1160343A3 (en) Process for production of intermetallic compound-based composite material
RU2402406C1 (en) Method of producing copper-based dispersion-strengthened articles for electric erosion applications
CN108526471B (en) Preparation method of iron-based powder metallurgy friction wheel
Yu et al. A new method for fabrication of Cu-Al sub 2 O sub 3 composite by internal oxidation
JPH11286732A (en) Manufacture of alumina-dispersed strengthened copper
CN109290383A (en) A kind of crowded gathering apparatus of rotation for preparing Ultra-fine Grained tubing and method
US3419364A (en) Composite silver and copper article
CN1134325A (en) Processing method for tooth profile of key
SU725818A1 (en) Sintered article producing method

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20021206

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20051208