CN1546697A - Platinum-based alloy electrical contact materials - Google Patents
Platinum-based alloy electrical contact materials Download PDFInfo
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- CN1546697A CN1546697A CNA2003101111380A CN200310111138A CN1546697A CN 1546697 A CN1546697 A CN 1546697A CN A2003101111380 A CNA2003101111380 A CN A2003101111380A CN 200310111138 A CN200310111138 A CN 200310111138A CN 1546697 A CN1546697 A CN 1546697A
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Abstract
The invention discloses a platinum based alloy and its preparing process, wherein the platinum based alloy comprises the constituents by wt% of Ir 5.0-25.0, Ru 1.0-10.0, 0.1-2.0% of La, Sm, or Y, and balancing Pt. The preparation process includes, disposing each element of Pt, Ir, Ru, La (Sm, Y) according to the alloy composition requirement, alloying in vacuum smelting furnace, fabricating into sheet material or shredded material through forging, thermal treatment, rolling or drawing.
Description
Technical field
The present invention relates to platinum base alloy contact material and preparation method thereof.
Background technology
Metal platinum has high-melting-point, high boiling point and low-vapor pressure, thereby has good resistance fusion welding, anti-electrical arc erosion etc. as contact material.Simultaneously, the platinum chemical stability is good, not oxidation in atmosphere and aggressive atmosphere, does not vulcanize, does not corrode.Therefore, platinum base electrical alloy has reliable and stable electrical contact performance in the light current field.But, because costing an arm and a leg of platinum generally only just used under the working conditions of occasion that requires high reliability and easy generation electroerosion.
Platinum iridium alloy: PtIr
5, PtIr
10, PtIr
15, PtIr
20, PtIr
25Have characteristics such as fusing point height (more than＞1700 ℃), hardness height (Hv＞150), good corrosion resistance, contact resistance be stable, be applicable to technical qualification require high, easily the light current occasion of electric arc takes place, as materials such as aircraft engine ignition contact, supersensitive relay contact, micromotor, potentiometer brush and conducting rings.Can it carries out the task of connection, disconnection and load current in the line, normally move decisive role to electrical equipment, switch and overload protective device etc.In high-tech sectors such as Aeronautics and Astronautics, particularly harsh to life-span of platinoiridita contact material and reliability requirement, just can guarantee at work perfectly safe of device.But, secular use is found, PtIr alloy contact material has tangible deficiency, phenomenons such as serious electroerosion in surface and metal transfer can appear in the course of the work, present projection or pit, make melting welding takes place between contact, cause component failure, badly influence the reliability and the electric life of integral unit.
Patent of invention CN1075509A (open day on August 25th, 1993) discloses a kind of platinum base alloys with controlled expansion, is used to make measuring fluid pressure and parts glass-sealed instrument, device.It consists of: 5.5～8.5%Ir, surplus Pt.Do not contain Ru, La, Sm, Y element in this alloy.
Summary of the invention
The object of the invention is to provide a kind of light current occasion that is used for to have high reliability and long-life platinum base alloy contact material.
The object of the invention two provides the preparation method of platinum base alloy contact material.
The platinum base alloy contact material of the object of the invention one, the weight percent composition is: Ir5.0～30.0, any of Ru1.0～10.0,0.1～2.0La, Sm, Y, surplus is Pt.
The platinum base alloy contact material preparation method of the object of the invention two comprises that successively following process steps is:
1) under 1800～2000 ℃ of temperature 1 * 10
-3Pa vacuum melting;
2) mechanical deepfreeze 1) go on foot the alloy pig that obtains and make sheet material, bar or silk material, when deflection reaches 50-60% in the machinery cold-treating process, 600-1300 ℃ of thermal treatment resulting sheet, bar or silk material 0.5～1.0 hour can obtain finished product through follow-up mechanical deepfreeze.
Mechanical deepfreeze in the technical solution of the present invention is meant cold forging, cold rolling, cold drawing etc.
The present invention adds Ru and rare earth element (La, Sm, Y) in PtIr alloy contact material, form the PtIrRuRE alloy, and to PtIr alloy organizing structure, physical and mechanical properties plays significant improvement effect.The adding of rare earth element helps to eliminate impurity, and scavenging material has crystal grain thinning and the effect that makes the weave construction refinement, thereby improves physics, mechanical property and the electrical property of alloy.When adding Ru, the resistance fusion welding of alloy can obviously improve, the property improvement of anti-the electrical arc erosion, and metal transfer reduces, and electric life increases.Therefore, PtIrRuRE of the present invention is the alloy novel contact material, has realized improving the PtIr alloy electrical contact performance and the purpose in work-ing life, and its over-all properties is better than existing PtIr alloy; And, reduced the content of precious metal Ir, Ru, saved the precious metal resource.Under DC27 ± 0.2A working condition, the platinum base alloy contact material embodiment average electrical life-span of the present invention is improved nearly 2.4 times than platinum iridium alloy Comparative Examples contact material.
Embodiment
According to platinum base alloy contact material weight percent composition range: Ir5.0～30.0, any one of Ru1.0～10.0,0.1～2.0La, Sm, Y, surplus is Pt.Take by weighing desired raw material, be put in the intermediate frequency furnace 1800～2000 ℃ down 1 * 10
-3Melting in the pa vacuum, the cooling ingot casting.Adopt mechanical deepfreeze measures such as cold forging, cold rolling, cold drawing that alloy pig is made sheet material, bar or silk material.In the machinery cold-treating process, when alloy sheet material, bar or silk material cross-sectional deformation amount reach 50-60%, thermal treatment resulting sheet under arbitrary temperature, bar or silk material are 0.5～1.0 hour in 600-1300 ℃ of scope, promptly obtain platinum base alloy contact material work in-process, promptly can be applicable to practical work piece through follow-up rolling or drawing.
Platinum base alloy contact material chemical ingredients of the present invention and physical and mechanical property embodiment list in table 1, and electric property embodiment the results are shown in table 2.Concrete implementation condition is: atmospheric environment, open circuit voltage (DC) 27 ± 0.2A, inductive load τ=5 * 10
-3S, making current 2.5 ± 0.2A, turn-off current 0.3A-5A, contact spacing 0.3mm, contact pressure 1.9～2.5N, contact operating frequency 571Hz, three pairs/class of contact quantity.Pt, the Ir that the present invention uses, Ru, La, Sm, Y material purity are more than 99.99%.
Table 1: the chemical ingredients of platinum base alloy material of the present invention and performance
| Embodiment | Alloying constituent (weight %) | Material property | ||||||||
| ??Ir | ????Ru | ????La | ??Sm | ??Y | ??Pt | Hardness (Hv) | Tensile strength (MPa) | Unit elongation (%) | Resistivity (μ Ω .cm.) | |
| ??1 | ??5.0 | ????1.0 | ????0.1 | Surplus | ??150 | ????295 | ????4.2 | ????20 | ||
| ??2 | ??10.0 | ????2.0 | ??0.5 | Surplus | ??220 | ????395 | ????3.5 | ????25 | ||
| ??3 | ??15.0 | ????5.0 | ????1.0 | Surplus | ??290 | ????650 | ????3.2 | ????28 | ||
| ??4 | ??20.0 | ????1.0 | ????1.5 | Surplus | ??320 | ????720 | ????3.0 | ????31 | ||
| ??5 | ??25.0 | ????6 | ????1.0 | Surplus | ??380 | ????860 | ????2.5 | ????34 | ||
Table 2: platinum base alloy material electric property of the present invention uses the result relatively
| Numbering | Alloying constituent (weight %) | Implementation condition | Electric life (* 10 4Inferior) | The result | |||||
| ??Ir | ??Ru | ??La | ??Sm | ??Y | ??Pt | ||||
| 1 embodiment | ??5.0 | ?1.0 | ??0.1 | Surplus | ??(DC)27±0.2A | ????1.5 | Well | ||
| 2 embodiment | ??10.0 | ?2.0 | ?0.5 | Surplus | ??(DC)27±0.2A | ????1.6 | Well | ||
| 3 embodiment | ??15.0 | ?5.0 | ?1.0 | Surplus | ??(DC)27±0.2A | ????1.8 | Well | ||
| 4 embodiment | ??20.0 | ?1.0 | ?1.5 | Surplus | ??(DC)27±0.2A | ????2.5 | Outstanding | ||
| 5 embodiment | ??25.0 | ?6.0 | ?1.0 | Surplus | ??(DC)27±0.2A | ????3.0 | Outstanding | ||
| 6 Comparative Examples | ??5.0 | Surplus | ??(DC)27±0.2A | ????1.0 | Qualified | ||||
| 7 Comparative Examples | ??10.0 | Surplus | ??(DC)27±0.2A | ????1.2 | Qualified | ||||
| 8 Comparative Examples | ??15.0 | Surplus | ??(DC)27±0.2A | ????1.3 | Qualified | ||||
| 9 Comparative Examples | ??20.0 | Surplus | ??(DC)27±0.2A | ????1.5 | Well | ||||
| 10 Comparative Examples | ??25.0 | Surplus | ??(DC)27±0.2A | ????1.8 | Well | ||||
Claims (2)
1. platinum base alloy contact material, its composition (weight %) is: Ir5.0～30.0, any of the La of Ru1.0～10.0,0.1～2.0, Sm, Y, surplus is Pt.
2. the preparation method of platinum base alloy contact material as claimed in claim 1 comprises that the processing step of following order is:
1) under 1800～2000 ℃ of temperature 1 * 10
-3Pa vacuum melting;
2) mechanical deepfreeze 1) go on foot the alloy pig that obtains and make sheet material, bar or silk material, when deflection reaches 50-60% in the machinery cold-treating process, 600-1300 ℃ of thermal treatment resulting sheet, bar or silk material 0.5～1.0 hour handle to obtain finished product through follow-up cold processing technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101111380A CN1546697A (en) | 2003-12-05 | 2003-12-05 | Platinum-based alloy electrical contact materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101111380A CN1546697A (en) | 2003-12-05 | 2003-12-05 | Platinum-based alloy electrical contact materials |
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|---|---|
| CN1546697A true CN1546697A (en) | 2004-11-17 |
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| CNA2003101111380A Pending CN1546697A (en) | 2003-12-05 | 2003-12-05 | Platinum-based alloy electrical contact materials |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948965A (en) * | 2010-07-27 | 2011-01-19 | 昆明贵金属研究所 | Novel platinum alloy electrical contact material and preparation method thereof |
| CN104674048B (en) * | 2015-03-19 | 2016-06-22 | 昆明富尔诺林科技发展有限公司 | A kind of Pt-Ru based high-temperature alloy material and preparation method thereof |
| CN106544540A (en) * | 2016-10-31 | 2017-03-29 | 重庆材料研究院有限公司 | A kind of high intensity, high rigidity, wear-resisting precious metal alloys and preparation method |
| CN106660133A (en) * | 2014-08-08 | 2017-05-10 | 田中贵金属工业株式会社 | Method for producing platinum-based alloy powder |
| CN107916339A (en) * | 2017-10-23 | 2018-04-17 | 昆明贵金属研究所 | New platinoiridita yittrium alloy contact material and preparation method thereof |
| CN113322395A (en) * | 2021-05-31 | 2021-08-31 | 昆明富尔诺林科技发展有限公司 | Electrode material of Pt-Ru-Ir alloy spark plug, preparation method thereof and spark plug applying electrode material |
| CN116590568A (en) * | 2023-04-17 | 2023-08-15 | 贵研铂业股份有限公司 | A high-temperature platinum-based high-entropy resistance strain material, preparation method and application |
-
2003
- 2003-12-05 CN CNA2003101111380A patent/CN1546697A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948965A (en) * | 2010-07-27 | 2011-01-19 | 昆明贵金属研究所 | Novel platinum alloy electrical contact material and preparation method thereof |
| CN106660133A (en) * | 2014-08-08 | 2017-05-10 | 田中贵金属工业株式会社 | Method for producing platinum-based alloy powder |
| CN106660133B (en) * | 2014-08-08 | 2018-11-13 | 田中贵金属工业株式会社 | The manufacturing method of platinoid powder |
| CN104674048B (en) * | 2015-03-19 | 2016-06-22 | 昆明富尔诺林科技发展有限公司 | A kind of Pt-Ru based high-temperature alloy material and preparation method thereof |
| CN106544540A (en) * | 2016-10-31 | 2017-03-29 | 重庆材料研究院有限公司 | A kind of high intensity, high rigidity, wear-resisting precious metal alloys and preparation method |
| CN107916339A (en) * | 2017-10-23 | 2018-04-17 | 昆明贵金属研究所 | New platinoiridita yittrium alloy contact material and preparation method thereof |
| CN113322395A (en) * | 2021-05-31 | 2021-08-31 | 昆明富尔诺林科技发展有限公司 | Electrode material of Pt-Ru-Ir alloy spark plug, preparation method thereof and spark plug applying electrode material |
| CN116590568A (en) * | 2023-04-17 | 2023-08-15 | 贵研铂业股份有限公司 | A high-temperature platinum-based high-entropy resistance strain material, preparation method and application |
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