WO2004016818A1 - Ag−酸化物系電気接点材料の製造方法およびその製品 - Google Patents
Ag−酸化物系電気接点材料の製造方法およびその製品 Download PDFInfo
- Publication number
- WO2004016818A1 WO2004016818A1 PCT/JP2002/008294 JP0208294W WO2004016818A1 WO 2004016818 A1 WO2004016818 A1 WO 2004016818A1 JP 0208294 W JP0208294 W JP 0208294W WO 2004016818 A1 WO2004016818 A1 WO 2004016818A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- oxide
- contact material
- electrical contact
- oxygen
- Prior art date
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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
-
- 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
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
-
- 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
Definitions
- the present invention relates to an Ag-oxide-based electrical contact material having excellent contact reliability, welding resistance, and arc wear resistance used for various switches, connectors, breakers, and the like, and a method for producing the same.
- Ag- (Sn, In, Sb) -based internal oxidized contact materials have been developed as medium load contacts with various characteristics.
- the speed of miniaturization of recent devices is extremely fast. Severe characteristics have been required for the contacts.
- An internal structure in which an oxide is precipitated and dispersed can be obtained by subjecting an alloy obtained by adding Sn, In, Sb, Bi, etc. to Ag to an internal structure in which oxides are precipitated and dispersed.
- Internal oxidation conditions, wear conditions after contact characteristics evaluation test As a result of research with, it was found that oxide condensation layer of A g re Tutsi layer formed on the surface during contact making and immediately below it causes the lead to poor results of such welding or junction temperature rise during contact switching.
- the inventor has analyzed various factors that affect the change in the oxidized structure due to the temperature, oxygen pressure, and additive elements in the internal oxidation mechanism, and further studied the manufacturing conditions under an extended analysis range.
- the role of oxides of various elements other than Cd in contributing to the contact characteristics was reviewed, and the cleaning action and arc phenomena on the surface of the electrical contacts, such as the properties of the added oxide, especially
- various characteristics such as welding resistance, arc wear resistance, and low contact resistance are obtained.
- the optimum relationship between the additive element comparable to the Ag-Cd ⁇ electrical contact material and the dispersed state of the oxide in Ag including the composite oxide could be confirmed.
- the present invention has been made based on the above confirmation, and the Sn oxide has a vapor pressure lower than CdO in a temperature range of about 500 to 400 ° C. By dispersing the oxides, the combined vapor pressure behavior of these metal composite oxide forms can be more closely approximated to the C d0 vapor pressure behavior, and the synergistic action exhibits excellent contact characteristics.
- 31 in Ag contains 1 to 5% by weight, 1 ] 1 is 3 to 10% by weight more? 6,
- One or two of Ni and Co are 0.05% to 1% by weight, and the balance of Ag is internally oxidized. It is characterized in that the oxide and one or two oxides of Fe, Ni, and Co are uniformly and finely precipitated and dispersed.
- the alloy consisting of 0.05% to 1% by weight of one or two species and the balance of Ag is internally oxidized, and in the internal structure, Sn / In complex oxide and In / Bi complex oxide of added elements Compound, Sn ⁇ Bi complex oxide, and Sn ⁇ In ⁇ Bi complex oxide and one or two of Fe, Ni, and Co oxides are uniformly and finely precipitated and dispersed.
- the additive element Sn ⁇ In composite oxide, In.Sb composite oxide, Sn.Sb It is characterized in that the composite oxide, the Sn ⁇ In ⁇ Sb composite oxide and one or two of Fe, Ni and Co are uniformly and finely precipitated and dispersed.
- Sn, Bi, and Sb oxides have a content of about 500 to 400.
- the combined vapor pressure behavior of these metal composite oxide forms can be further improved. It approximates the behavior of the vapor pressure, so that the synergistic action can exert excellent contact characteristics, and the contact surface of the Ag rich layer which is considered to destabilize the contact reliability of the contacts
- 311 is 1 to 5% by weight
- 11 is 3 to 10% by weight
- 8 is 0.05 to 2% by weight
- Sb force S is 0.05 to 5% by weight.
- the internal deformation density is increased by the high processing, which is the processing rate, and the complex oxides of the added elements are uniformly and finely dispersed and dispersed deep down to the internal structure due to the interaction caused by the generation of many crystals and nuclei of oxide particles.
- a Cd-free electrical contact excellent in various electrical properties such as welding resistance, arc wear resistance, and low contact resistance can be obtained.
- the reason for setting the upper limit of the processing rate to 95% in the above is that the processing beyond this is the limit of the workability of the material, and the processing strain that exerts the effect sufficiently when the processing is less than 50%. Because it is not enough to cause
- the reason for the oxygen pressure to 5 kg / cm 2 ⁇ 5 0 kg / cm 2 , the nitrogen and hydrogen non-oxidizing gas i.e. air in the internal oxidation furnace by substituting was removed, along with Rukoto to improve the oxidative atmosphere in the furnace, the oxygen pressure to obtain a uniform and fine precipitation dispersing a composite oxide of added elements to the material inside the deep is less than 5 kg / cm 2 not If it is more than 50 kgZcm 2 , the furnace equipment becomes enormous, and it is not possible to obtain a dramatic effect on the characteristics that is commensurate with the production cost.
- the reason that the temperature was raised from 200 ° C in a pressurized oxygen atmosphere and the upper limit was set to 700 ° C as the internal oxidation temperature was that 200 ° C was the lower limit of the internal oxidation temperature range. Yes, 700. Above C, the diffusion rate of solute elements becomes higher than the diffusion rate of oxygen from the material surface during internal oxidation, This is because a strong layered agglomeration is formed at the same time to inhibit the progress of internal oxidation thereafter.
- the reason why the upper limit of the component range of Sn to Ag is set to 5% by weight is that if the addition exceeds this, the oxide cannot be finely precipitated and the layered strong coagulation inside the oxidized structure. This makes it difficult for the internal oxidation to proceed thereafter, causing serious embrittlement in the oxidized structure. Also, if the addition is less than 1% by weight, complex oxidation with multiple elements cannot be satisfied, and a sufficient addition effect on various electric properties cannot be obtained.
- the reason for setting the content to 10% by weight is that if it is added more than this, it forms a dense oxide film on the surface during internal oxidation in combination with other elements, making it difficult for oxygen to enter from the surface. If the content is less than 3% by weight, the effect of suppressing the volatilization loss due to arc, which is the effect of the vapor pressure lower than that of CdO described above, is not exhibited.
- the reason why the upper limit of the component range of B i is set to 2% by weight is that if the addition amount exceeds that, it causes hot embrittlement, and the alloy is reduced in order to refine the oxide which is an element of the present invention. This is because it becomes difficult to manufacture at a processing rate of 50% to 95%, and in addition, remarkable agglomeration of oxides occurs at the time of internal oxidation, making subsequent internal oxidation difficult to proceed. If the content is less than 0.05% by weight, the effect of finely dispersing the composite oxide particles cannot be obtained.
- the reason that the upper limit of the component range of Sb is set to 5% by weight is that addition of more than this causes a dense oxide film to be formed on the surface at the time of internal oxidation in combination with other elements, so that oxygen enters from the surface. Is to make it difficult. 0 If the amount is less than 0.5% by weight, the effect of contact surface cleaning, which is an effect of a vapor pressure higher than that of CdO, is not exhibited.
- the addition of one or two of Fe, Ni, and Co is effective mainly in refining the crystal grains and in making the oxide particle size uniform.
- the reason why the upper limit is set to the upper limit is that alloying by the melting method is extremely difficult even if it is added in excess of this, and if it is less than 0.05% by weight, effects such as grain refinement cannot be exerted. .
- FIG. 1 is a micrograph of the internal structure according to the fourth embodiment
- FIG. 2 is a micrograph of the internal structure according to the first conventional example
- FIG. 5 is a table showing various electrical characteristics of the alloy.
- composition alloy shown in Fig. 3 was obtained from one or two of Sn, In, Bi, Sb and Fe, Ni, and Co having a purity of 5% by weight or more. It was produced in the process of.
- an Ag plate is hot-pressed on one surface to form an Ag layer for brazing.
- the material was cold-rolled at a working rate in each of Embodiments 1 to 9 to form a plate having a thickness of 2 mm, and then punched into a disk shape having a diameter of 6 mm.
- this sample was prepared in an oxidizing atmosphere at an oxygen pressure of 50 kg / cm 2 , at 200 ⁇ m.
- the temperature was raised to C to 600 ° C. to perform internal oxidation.
- the temperature is 200 ° C. to 63 0 in an oxidizing atmosphere with an oxygen pressure of 30 kg / cm 2 .
- the temperature was raised to C for internal oxidation.
- the pressure is 200 in an oxidizing atmosphere with an oxygen pressure of 5 kgcm 2 .
- the pressure is 200 in an oxidizing atmosphere with an oxygen pressure of 50 kg / cm 2 .
- the temperature is 200 ° C. to 65 ° C. in an oxidizing atmosphere with an oxygen pressure of 20 kg Z cm 2 .
- the temperature was raised to C for internal oxidation.
- the pressure is 200 in an oxidizing atmosphere with an oxygen pressure of 10 kg / cm 2 . C-600. The temperature was raised to C for internal oxidation.
- the temperature is 200 ° C. to 680 in an oxidizing atmosphere with an oxygen pressure of 8 kgZcm 2 .
- the temperature was raised to C for internal oxidation.
- the oxygen pressure is 200 in an oxidizing atmosphere with an oxygen pressure of 40 kg / cm2.
- the temperature was raised to ⁇ 450 ° C for internal oxidation.
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001167395A JP4947850B2 (ja) | 2001-06-01 | 2001-06-01 | Ag−酸化物系電気接点材料の製造方法 |
DE60215981T DE60215981T2 (de) | 2002-08-15 | 2002-08-15 | HERSTELLUNGSVERFAHREN FÜR ELEKTRISCHES KONTAKTMATERIAL AUF Ag-OXIDBASIS UND DESSEN PRODUKT |
CNB028206282A CN100378884C (zh) | 2001-06-01 | 2002-08-15 | 银-氧化物系电接触材料的制造方法及其制品 |
US10/503,300 US7189656B2 (en) | 2001-06-01 | 2002-08-15 | Method for manufacturing ag-oxide-based electric contact material and product of the same |
PCT/JP2002/008294 WO2004016818A1 (ja) | 2001-06-01 | 2002-08-15 | Ag−酸化物系電気接点材料の製造方法およびその製品 |
EP02762779A EP1584696B1 (en) | 2002-08-15 | 2002-08-15 | METHOD FOR PRODUCING Ag-OXIDE-BASED ELECTRIC CONTACT MATERIAL AND ITS PRODUCT |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001167395A JP4947850B2 (ja) | 2001-06-01 | 2001-06-01 | Ag−酸化物系電気接点材料の製造方法 |
PCT/JP2002/008294 WO2004016818A1 (ja) | 2001-06-01 | 2002-08-15 | Ag−酸化物系電気接点材料の製造方法およびその製品 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004016818A1 true WO2004016818A1 (ja) | 2004-02-26 |
Family
ID=34897846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/008294 WO2004016818A1 (ja) | 2001-06-01 | 2002-08-15 | Ag−酸化物系電気接点材料の製造方法およびその製品 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1584696B1 (ja) |
DE (1) | DE60215981T2 (ja) |
WO (1) | WO2004016818A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS542234A (en) * | 1977-06-08 | 1979-01-09 | Tanaka Precious Metal Ind | Method of making electric contact material consisting of silverrtinoxide base alloy |
JPS58100650A (ja) * | 1981-12-11 | 1983-06-15 | Matsushita Electric Ind Co Ltd | 電気接点材料 |
JPS59219432A (ja) * | 1983-05-27 | 1984-12-10 | Chugai Electric Ind Co Ltd | 銀−錫酸化物系複合接点材とその製法 |
JPS62241207A (ja) * | 1986-04-11 | 1987-10-21 | 中外電気工業株式会社 | 電気接点材料 |
JPH0989727A (ja) * | 1995-09-21 | 1997-04-04 | Matsushita Electric Works Ltd | 大気成分捕集器 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3874941A (en) * | 1973-03-22 | 1975-04-01 | Chugai Electric Ind Co Ltd | Silver-metal oxide contact materials |
DE69219397T2 (de) * | 1991-04-12 | 1997-11-06 | Mitsubishi Materials Corp | Metalloxidmaterial auf Silberbasis für elektrische Kontakte |
JPH09106724A (ja) * | 1995-10-12 | 1997-04-22 | Maruzen Kogyo Kk | 開閉器 |
-
2002
- 2002-08-15 WO PCT/JP2002/008294 patent/WO2004016818A1/ja active IP Right Grant
- 2002-08-15 EP EP02762779A patent/EP1584696B1/en not_active Expired - Lifetime
- 2002-08-15 DE DE60215981T patent/DE60215981T2/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS542234A (en) * | 1977-06-08 | 1979-01-09 | Tanaka Precious Metal Ind | Method of making electric contact material consisting of silverrtinoxide base alloy |
JPS58100650A (ja) * | 1981-12-11 | 1983-06-15 | Matsushita Electric Ind Co Ltd | 電気接点材料 |
JPS59219432A (ja) * | 1983-05-27 | 1984-12-10 | Chugai Electric Ind Co Ltd | 銀−錫酸化物系複合接点材とその製法 |
JPS62241207A (ja) * | 1986-04-11 | 1987-10-21 | 中外電気工業株式会社 | 電気接点材料 |
JPH0989727A (ja) * | 1995-09-21 | 1997-04-04 | Matsushita Electric Works Ltd | 大気成分捕集器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1584696A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1584696A1 (en) | 2005-10-12 |
DE60215981D1 (de) | 2006-12-21 |
DE60215981T2 (de) | 2007-07-26 |
EP1584696A4 (en) | 2005-10-12 |
EP1584696B1 (en) | 2006-11-08 |
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