EP0508055B1 - Metalloxidmaterial auf Silberbasis für elektrische Kontakte - Google Patents
Metalloxidmaterial auf Silberbasis für elektrische Kontakte Download PDFInfo
- Publication number
- EP0508055B1 EP0508055B1 EP92101915A EP92101915A EP0508055B1 EP 0508055 B1 EP0508055 B1 EP 0508055B1 EP 92101915 A EP92101915 A EP 92101915A EP 92101915 A EP92101915 A EP 92101915A EP 0508055 B1 EP0508055 B1 EP 0508055B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silver
- metal oxide
- base metal
- oxide material
- electric contacts
- 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.)
- Revoked
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
- H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
- H01H1/02376—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te containing as major component SnO2
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
Definitions
- This invention relates to silver-base metal oxide materials for electric contacts for use in various electrical or electronic apparatus.
- a great many conventional electrical contact materials have been proposed or used in various electrical or electronic apparatus.
- electric contact materials there are silver-base composites with dispersed metal oxides as described in "Metals Handbook", 10th edition, vol.2, page 857, published by ASM International Handbook committee, 1990. It is stated, that such silver-based composites can be produced by internal oxidation. in this process, a silver alloy (such as silver-cadmium alloy) is first cast into ingots, which are rolled into strips or fabricated further into the finished product form. This silver alloy material is then heated in air or oxygen, so that the oxygen diffuses into the alloy and forms metal oxide particles (such as CdO in the case of Ag-Cd-alloy), dispersed in the silver matrix.
- a silver alloy such as silver-cadmium alloy
- the present invention provides a silver-base metal oxide material for electric contacts having excellent deposition resistance and consumption resistance, said material being formed by subjecting to an internal oxidation treatment an Ag-base alloy consisting of (in weight-%) Sn 4 - 11 % In 1 - 5 % Te 0,05 - 4 % and Ag and impurities: the balance
- At least one of the following elements (a) and (b) may be added to the alloy:
- the invention also provides a process for preparing said silver-base metal oxide material, and rivets for electrical contacts made from such material, see claims 10 to 12.
- a silver-base metal oxide material for electric contacts which is formed by subjecting an Ag-base alloy consisting a part from impurities of: Sn 4 - 11%; In 1 - 5%; Te 0.05 - 4%; and, if required, at least one of the following elements (a) and (b):
- the present invention is based upon the above finding, and the silver-base metal oxideelectric contact material according to the invention has the aforementioned chemical compositions.
- Ag-base alloys having chemical compositions shown in Tables 1 and 2 were smelted in an ordinary type high-frequency smelting furnance ce and cast under conventional ordinary casting conditions into ingots.
- the ingots were each hot extruded into a plate having a thickness of 5mm.
- the plate was then hot rolled, followed by being cold rolled into a sheet having a thickness of 0.6mm.
- the sheet was cut or sliced in its longitudinal direction into a strip having a width of 2mm.
- the strip was subjected to an internal oxidation treatment under an oxygen atmosphere at a temperature of 700°C and for a soaking time of 24 hours.
- the internally oxidized strips were put together and compacted into a billet having a diameter of 70mm.
- the billet was extruded into a diameter of 7mm, followed by being subjected to wire drawing into a wire having a diameter of 2mm. Finally, the wire was formed, by a header machine, into rivets having a head diameter of 4mm, a head height of lmm, a leg diameter of 2mm, and a leg length of 2mm.
- the obtained rivets were adapted as specimens of the silver-base metal oxide electric contact material according to the present invention (hereinafter referred to as "the present invention contact materials Nos. 1 - 13”) and specimens of conventional silver-base metal oxide electric contact materials (hereinafter referred to as "the conventional contact materials Nos. 1 - 11").
- Rivets were formed from Ag-base alloys having chemical compositions shown in Tables 3 and 4 under the same conditions as in Example 1 described above, to obtain present invention materials Nos. 14 - 29 and conventional materials Nos. 12 - 17.
- silver-base metal oxide electric contact materials according to the present invention thus possess excellent deposition resistance and consumption resistance, if they are actually used in various electrical or electronic apparatus, they will greatly contribute to improving the performance of the electrical or electronic apparatus as well as to prolongation of the service lives thereof.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Contacts (AREA)
Claims (12)
- Metalloxidmaterial auf Silberbasis für elektrische Kontakte mit ausgezeichneter Verschweiß sicherheit und Abbrandsicherheit, welches gebildet wird, indem man einer inneren Oxidationsbehandlung eine Legierung auf Ag-Basis unterwirft, die in Gewichtsprozent besteht aus:
Sn 4 - 11 %; In 1 - 5 %; Te 0.05 - 4 %; und Ag und Verunreinigungen der Rest. - Metalloxidmaterial auf Silberbasis für elektrische Kontakte mit ausgezeichneter Verschweißsicherheit und Abbrandsicherheit, welches gebildet wird, indem man einer inneren Oxidationsbehandlung eine Legierung auf Ag-Basis unterwirft, die in Gewichtsprozent besteht aus:
Sn 4 - 11 %; In 1 - 5 %; Te 0.05 - 4 %; und wenigstens ein Element ausgewählt aus der Gruppe Fe, Ni und Co 0.01 - 1 %; und Ag und Verunreinigungen der Rest. - Metalloxidmaterial auf Silberbasis für elektrische Kontakte mit ausgezeichneter Verschweißsicherheit und Abbrandsicherheit, welches gebildet wird, indem man einer inneren Oxidationsbehandlung eine Legierung auf Ag-Basis unterwirft, die in Gewichtsprozent besteht aus:
Sn 4 - 11 %; In 1 - 5 %; Te 0.05 - 4 %; und Cd 0.05 - 3 %; und Ag und Verunreinigungen der Rest. - Metalloxidmaterial auf Silberbasis für elektrische Kontakte mit ausgezeichneter Verschweißsicherheit und Abnutzungsbeständigkeit, welches gebildet wird, indem man einer inneren Oxidationsbehandlung eine Legierung auf Ag-Basis unterwirft, die in Gewichtsprozent besteht aus:
Sn 4 - 11 %; In 1 - 5 %; Te 0.05 - 4 %; Cd 0.05 - 3 %; wenigstens ein Element ausgewählt aus der Gruppe Fe, Ni und Co 0.01 - 1 %; und Ag und Verunreinigungen der Rest. - Metalloxidmaterial auf Silberbasis für elektrische Kontakte nach einem der Ansprüche 1 - 4, worin die innere Oxidationsbehandlung unter den folgenden Bedingungen durchgeführt wird:
Atmosphäre oxidierende Atmosphäre Oxidationstemperatur 650 - 750 °C; und Einwirkungszeit 8 - 26 Std. - Metalloxidmaterial auf Silberbasis für elektrische Kontakte nach einem der Ansprüche 1 - 4, worin Sn in der Legierung auf Ag-Basis in einer Menge von 5 - 8 % enthalten ist.
- Metalloxidmaterial auf Silberbasis für elektrische Kontakte nach einem der Ansprüche 1 - 4, worin In in der Legierung auf Ag-Basis in einer Menge von 1,5 bis 3 % enthalten ist.
- Metalloxidmaterial auf Silberbasis für elektrische Kontakte nach einem der Ansprüche 3 oder 4, worin Cd in der Legierung auf Ag-Basis in einer Menge von 0.1 bis 2 % enthalten ist.
- Metalloxidmaterial auf Silberbasis für elektrische Kontakte nach einem der Ansprüche 2 oder 4, worin wenigstens ein Element aus der Gruppe Fe, Ni und Co in der Legierung auf Ag-Basis in einer Menge von 0.05 - 0.2 % enthalten ist.
- Verfahren zur Herstellung eines Metalloxidmaterials auf Silberbasis für elektrische Kontakte durch innere Oxidation irgendeiner der Legierungen der Ansprüche 1 - 9, gekennzeichnet durch die folgenden Stufen:1) durch Schmelzen und Gießen hergestellte Barren der Legierung auf Silberbasis werden heiß zu einer Platte mit einer Dicke von 5 mm extrudiert;2) diese Platte wird dann heißgewalzt und anschließend kaltgewalzt zu einem Blech von 0,6 mm Dicke;3) dieses Blech wird in seiner Längsrichtung in Streifen mit einer Breite von 2 mm geschnitten oder gespalten;4) diese Streifen werden einer inneren Oxidationsbehandlung unter einer Sauerstoffatmosphäre bei einer Temperatur von 700 °C während 24 Stunden unterworfen;5) die innerlich oxidierten Streifen werden zusammengebracht und zu einem Knüppel mit einem Durchmesser von 70 mm gepreßt, und der Knüppel wird zu einem Durchmesser von 7 mm extrudiert,worauf falls gewünscht ein Drahtziehen zu einem Draht von einem Durchmesser von 2 mm erfolgt.
- Eine Niete hergestellt aus einem Metalloxidmaterial auf Silberbasis, das einer inneren Oxidationsbehandlung unterworfen wurde, nach einem der Ansprüche 1 bis 9.
- Eine Niete hergestellt nach Anspruch 10.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3122024A JPH0762188B2 (ja) | 1991-04-12 | 1991-04-12 | 銀−酸化物系電気接点材料 |
JP122024/91 | 1991-04-12 | ||
JP3276790A JPH0762189B2 (ja) | 1991-09-27 | 1991-09-27 | 銀−酸化物系電気接点材料 |
JP276790/91 | 1991-09-27 | ||
CA002080201A CA2080201C (en) | 1991-04-12 | 1992-10-08 | Silver-oxide based electric contact material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0508055A1 EP0508055A1 (de) | 1992-10-14 |
EP0508055B1 true EP0508055B1 (de) | 1997-05-02 |
Family
ID=27169214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92101915A Revoked EP0508055B1 (de) | 1991-04-12 | 1992-02-05 | Metalloxidmaterial auf Silberbasis für elektrische Kontakte |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0508055B1 (de) |
KR (1) | KR0121724B1 (de) |
DE (1) | DE69219397T2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010014745A1 (de) * | 2010-01-15 | 2011-07-21 | Tyco Electronics AMP GmbH, 64625 | Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5451272A (en) * | 1991-04-12 | 1995-09-19 | Mitsubishi Materials Corporation | Silver-oxide electric contact material for use in switches for high current |
JP4947850B2 (ja) | 2001-06-01 | 2012-06-06 | 株式会社徳力本店 | Ag−酸化物系電気接点材料の製造方法 |
WO2004016818A1 (ja) * | 2001-06-01 | 2004-02-26 | Tokuriki Honten Co., Ltd. | Ag−酸化物系電気接点材料の製造方法およびその製品 |
KR100464868B1 (ko) * | 2003-08-22 | 2005-01-15 | 희성금속 주식회사 | 전기접점재료 |
DE102009059690A1 (de) | 2009-12-19 | 2011-06-22 | Umicore AG & Co. KG, 63457 | Oxidationsverfahren |
EP2634273B8 (de) | 2010-10-29 | 2018-08-22 | SAXONIA Technical Materials GmbH | Oxidationsverfahren |
US9028586B2 (en) | 2011-12-29 | 2015-05-12 | Umicore | Oxidation method |
EP2644723B1 (de) | 2012-03-26 | 2017-01-18 | Umicore AG & Co. KG | Verbundwerkstoff |
CN111868864B (zh) * | 2018-03-16 | 2023-02-28 | 田中贵金属工业株式会社 | 直流高压继电器和直流高压继电器用触点材料 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1342227A (fr) * | 1962-09-24 | 1963-11-08 | Comp Generale Electricite | Alliage pour contacts électriques |
US3933485A (en) * | 1973-07-20 | 1976-01-20 | Chugai Denki Kogyo Kabushiki-Kaisha | Electrical contact material |
JPH06104873B2 (ja) * | 1986-07-08 | 1994-12-21 | 富士電機株式会社 | 銀―金属酸化物系接点用材料及びその製造方法 |
FR2644284B1 (fr) * | 1989-03-10 | 1996-04-12 | Louyot Comptoir Lyon Alemand | Nouveaux materiaux a base d'argent et d'oxyde d'etain pour la realisation de contacts electriques; contacts electriques ainsi realises |
-
1992
- 1992-02-05 DE DE69219397T patent/DE69219397T2/de not_active Revoked
- 1992-02-05 EP EP92101915A patent/EP0508055B1/de not_active Revoked
- 1992-04-08 KR KR1019920005853A patent/KR0121724B1/ko not_active IP Right Cessation
Non-Patent Citations (2)
Title |
---|
CONFERENCE ON ELECTRICAL CONTACTS 20 September 1989, CHICAGO, US pages 69 - 78; LAMBERT ET AL: 'A NEW DOPED SILVER TIN OXIDE MATERIAL WITH IMPROVED ELECTRICAL BEHAVIOUR' * |
Metals Handbook, 9th edition, vol.1, 1990, page 857 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010014745A1 (de) * | 2010-01-15 | 2011-07-21 | Tyco Electronics AMP GmbH, 64625 | Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements |
DE102010014745B4 (de) * | 2010-01-15 | 2011-09-22 | Tyco Electronics Amp Gmbh | Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements |
Also Published As
Publication number | Publication date |
---|---|
DE69219397T2 (de) | 1997-11-06 |
KR930006167A (ko) | 1993-04-20 |
DE69219397D1 (de) | 1997-06-05 |
EP0508055A1 (de) | 1992-10-14 |
KR0121724B1 (ko) | 1997-12-04 |
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