EP0369282A2 - Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs - Google Patents
Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs Download PDFInfo
- Publication number
- EP0369282A2 EP0369282A2 EP89120514A EP89120514A EP0369282A2 EP 0369282 A2 EP0369282 A2 EP 0369282A2 EP 89120514 A EP89120514 A EP 89120514A EP 89120514 A EP89120514 A EP 89120514A EP 0369282 A2 EP0369282 A2 EP 0369282A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- oxide
- contact material
- sintered contact
- material according
- mass fraction
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 39
- 229910000416 bismuth oxide Inorganic materials 0.000 claims abstract description 23
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000956 alloy Substances 0.000 claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 16
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- 229910001887 tin oxide Inorganic materials 0.000 claims description 7
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000005751 Copper oxide Substances 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910000431 copper oxide Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- IVQODXYTQYNJFI-UHFFFAOYSA-N oxotin;silver Chemical compound [Ag].[Sn]=O IVQODXYTQYNJFI-UHFFFAOYSA-N 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
Definitions
- the invention relates to a sintered contact material for low-voltage switching devices in energy technology, in particular for motor contactors, containing silver (Ag), tin oxide (SnO2), bismuth oxide (Bi2O3) and copper oxide (CuO) and made from an internally oxidized alloy powder (IOLP) of the metals silver, tin , Bismuth and copper, the tin oxide being present in mass fractions of 4 to 12% and the ratio of the mass fractions of tin oxide to bismuth oxide on the one hand and of tin oxide to copper oxide in the internally oxidized alloy powder, respectively, between 8: 1 and 12: 1.
- Contact materials made from silver-tin oxide have proven to be particularly advantageous for use in low-voltage switchgear in power engineering, for example in motor contactors, but also in circuit breakers.
- Contact pieces made of silver-tin oxide have a long service life in motor contactors, but have the disadvantage that thermally stable oxide layers form on the contact surfaces when exposed to arcing, which lead to increased contact resistance. This results in impermissibly high excess temperatures on the switching elements in the case of continuous current flow in the switching device, which in particular can lead to damage to the plastic parts.
- DE-OS 34 21 758 and DE-OS 34 21 759 sintered contact materials of the constitution AgSnO2Bi2O3CuO are described which are made from internally oxidized alloy powders and describe the demands made today on the number of lifespans and on the other hand meet the switch-on capacity.
- These materials may have a relatively high proportion of bismuth oxide, which is introduced either via the internally oxidized alloy powder or via a separate admixture of the bismuth oxide to the internally oxidized alloy powder.
- these materials only reach acceptable values with regard to overtemperature if the total mass fraction of oxide is limited to 8% to 11%.
- the object of the invention is therefore to create a material of the constitution AgSnO2Bi2O3CuO made of internally oxidized alloy powder, in which the silver content is as high as possible and the excess temperature as low as possible and in which the other properties are left in an optimal ratio to one another in order to save silver.
- the object is achieved in that at least zirconium oxide (ZrO2) is still present in a contact material made of the internally oxidized alloy powder of the type mentioned.
- the mass fraction of zirconium oxide is between 0.1 and 5%.
- bismuth oxide may optionally also be present outside the composite powder particles.
- the mass fraction of zirconium oxide and optionally bismuth oxide is preferably between 0.1 and 5%, the total content of the oxides in mass fractions being a maximum of 20%.
- an internally oxidized alloy powder of a predetermined composition is mixed with zirconium oxide powder and, if necessary, bismuth oxide powder is added for sintering with the liquid phase, organic solvents, in particular propanol, being used when the internally oxidized alloy powder is mixed with the powder of the additive oxides.
- the table shows measured values for the number of life cycles and for the overtemperature.
- the lifetime switching number corresponds to the volume erosion of the contact material and the overtemperature corresponds to the contact resistance.
- alloys made of AgSnBiCu are melted at a temperature of approximately 1323 K (1050 ° C.). Alloy powders of the same composition are obtained by atomizing the melt with water in a pressure atomization system. After drying, the powders are sieved to ⁇ 300 ⁇ m.
- the specified AgSnO2Bi2O3CuO powders were added to the powders of zirconium oxide and optionally additionally bismuth oxide by wet mixing in a stirred ball mill using propanol and steel balls. After drying, the steel balls were separated from the respective powder mixture by sieving.
- the starting powders for the contact piece production of the material examples given in the table were composed as follows: 1. AgSnO29.3 Bi2O30.93 CuO0.93 + ZrO20.6 IOLP - PM 2. AgSnO28.8 Bi2O30.88 CuO0.88 + ZrO21.3 IOLP - PM 3. AgSnO27.5 Bi2O30.75 CuO0.75 + ZrO21.4 IOLP - PM 4.
- the internally oxidized alloy powder forms the basis with 100 percent by mass, to which the additional oxides are added in percentages by mass.
- the starting powder mixture produced is compressed with a pressing pressure of, for example, 600 MPa.
- the compacts obtained are sintered in air at a temperature between 1123 K (850 ° C.) and 1148 K (875 ° C.) for 2 hours.
- the sintered contact pieces are hot pressed at a temperature of 923 K (650 ° C) and a pressure of, for example, 1000 MPa.
- two-layer finished molded parts with a solderable pure silver layer are expediently produced. These molded parts can be soldered directly onto the contact carrier, for example by motor contactors.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Contacts (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Manufacture Of Switches (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3838951 | 1988-11-17 | ||
| DE3838951 | 1988-11-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0369282A2 true EP0369282A2 (fr) | 1990-05-23 |
| EP0369282A3 EP0369282A3 (fr) | 1991-03-13 |
| EP0369282B1 EP0369282B1 (fr) | 1995-06-14 |
Family
ID=6367375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89120514A Expired - Lifetime EP0369282B1 (fr) | 1988-11-17 | 1989-11-06 | Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4948424A (fr) |
| EP (1) | EP0369282B1 (fr) |
| JP (1) | JPH02185938A (fr) |
| BR (1) | BR8905829A (fr) |
| DE (1) | DE58909295D1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992022080A1 (fr) * | 1991-05-27 | 1992-12-10 | Siemens Aktiengesellschaft | Materiau de contact a base d'argent pour l'utilisation dans des appareils de commutation en technologie des courants forts, ainsi que procede pour la fabrication de pieces de contact en ce materiau |
| EP1142661A2 (fr) * | 2000-04-06 | 2001-10-10 | dmc2 Degussa Metals Catalysts Cerdec AG | Procédé de préparation de poudres composites à base d'argent-oxyde d' étain et leur utilisation pour la préparation de matériaux de contact |
| CN107868880A (zh) * | 2016-09-23 | 2018-04-03 | 霍尼韦尔国际公司 | 银金属氧化物合金及其制备方法 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5286441A (en) * | 1989-12-26 | 1994-02-15 | Akira Shibata | Silver-metal oxide composite material and process for producing the same |
| DE4201940A1 (de) * | 1992-01-24 | 1993-07-29 | Siemens Ag | Sinterverbundwerkstoff fuer elektrische kontakte in schaltgeraeten der energietechnik |
| CN106233409B (zh) | 2014-04-16 | 2018-10-19 | Abb瑞士股份有限公司 | 用于开关应用的电触头顶端和电开关装置 |
| CN104128601B (zh) * | 2014-08-18 | 2016-09-07 | 黑龙江中勋机电科技发展有限公司 | 预合金法生产铜基电接触材料 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0074507A2 (fr) * | 1981-09-04 | 1983-03-23 | Degussa Aktiengesellschaft | Matériau pour contacts électriques et procédé de sa fabrication |
| EP0164664A2 (fr) * | 1984-06-12 | 1985-12-18 | Siemens Aktiengesellschaft | Matériau de contact fritté pour appareillages interrupteurs à basse tension de la technique de l'énergie |
| EP0170812A2 (fr) * | 1984-06-12 | 1986-02-12 | Siemens Aktiengesellschaft | Procédé pour la fabrication de matériau de contact fritté |
| EP0182386A2 (fr) * | 1983-02-10 | 1986-05-28 | Siemens Aktiengesellschaft | Procédé de fabrication de pièces de contact |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752417B2 (fr) * | 1973-05-04 | 1982-11-08 | ||
| US4141727A (en) * | 1976-12-03 | 1979-02-27 | Matsushita Electric Industrial Co., Ltd. | Electrical contact material and method of making the same |
| US4294616A (en) * | 1979-01-02 | 1981-10-13 | Gte Products Corporation | Electrical contacts |
-
1989
- 1989-11-06 DE DE58909295T patent/DE58909295D1/de not_active Expired - Fee Related
- 1989-11-06 EP EP89120514A patent/EP0369282B1/fr not_active Expired - Lifetime
- 1989-11-15 JP JP1295182A patent/JPH02185938A/ja active Pending
- 1989-11-17 US US07/438,514 patent/US4948424A/en not_active Expired - Fee Related
- 1989-11-17 BR BR898905829A patent/BR8905829A/pt unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0074507A2 (fr) * | 1981-09-04 | 1983-03-23 | Degussa Aktiengesellschaft | Matériau pour contacts électriques et procédé de sa fabrication |
| EP0182386A2 (fr) * | 1983-02-10 | 1986-05-28 | Siemens Aktiengesellschaft | Procédé de fabrication de pièces de contact |
| EP0164664A2 (fr) * | 1984-06-12 | 1985-12-18 | Siemens Aktiengesellschaft | Matériau de contact fritté pour appareillages interrupteurs à basse tension de la technique de l'énergie |
| EP0170812A2 (fr) * | 1984-06-12 | 1986-02-12 | Siemens Aktiengesellschaft | Procédé pour la fabrication de matériau de contact fritté |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992022080A1 (fr) * | 1991-05-27 | 1992-12-10 | Siemens Aktiengesellschaft | Materiau de contact a base d'argent pour l'utilisation dans des appareils de commutation en technologie des courants forts, ainsi que procede pour la fabrication de pieces de contact en ce materiau |
| EP1142661A2 (fr) * | 2000-04-06 | 2001-10-10 | dmc2 Degussa Metals Catalysts Cerdec AG | Procédé de préparation de poudres composites à base d'argent-oxyde d' étain et leur utilisation pour la préparation de matériaux de contact |
| EP1142661A3 (fr) * | 2000-04-06 | 2003-05-28 | OMG AG & Co. KG | Procédé de préparation de poudres composites à base d'argent-oxyde d' étain et leur utilisation pour la préparation de matériaux de contact |
| CN107868880A (zh) * | 2016-09-23 | 2018-04-03 | 霍尼韦尔国际公司 | 银金属氧化物合金及其制备方法 |
| US10290434B2 (en) | 2016-09-23 | 2019-05-14 | Honeywell International Inc. | Silver metal oxide alloy and method of making |
| US10727006B2 (en) | 2016-09-23 | 2020-07-28 | Honeywell International Inc. | Silver metal oxide alloy and method of making |
Also Published As
| Publication number | Publication date |
|---|---|
| US4948424A (en) | 1990-08-14 |
| EP0369282A3 (fr) | 1991-03-13 |
| JPH02185938A (ja) | 1990-07-20 |
| EP0369282B1 (fr) | 1995-06-14 |
| BR8905829A (pt) | 1990-06-12 |
| DE58909295D1 (de) | 1995-07-20 |
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