CN100465313C - Zinc-aluminium alloy silk containing rare earth and producing process thereof - Google Patents
Zinc-aluminium alloy silk containing rare earth and producing process thereof Download PDFInfo
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- CN100465313C CN100465313C CNB2004100663491A CN200410066349A CN100465313C CN 100465313 C CN100465313 C CN 100465313C CN B2004100663491 A CNB2004100663491 A CN B2004100663491A CN 200410066349 A CN200410066349 A CN 200410066349A CN 100465313 C CN100465313 C CN 100465313C
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Abstract
The present invention is RE containing Zn-Al alloy wire and its preparation process, and the RE containing Zn-Al alloy is used as the end spraying material for metallized film capacitor. The RE containing Zn-Al alloy contains Al 4-16 wt%, RE mixture with light RE as main components 0.01-0.12 wt%, and impurity not more than 0.025 wt% except Zn. The preparation process includes pouring Al molt into Zn molt, raising the temperature for melting while stirring, adding intermediate RE alloy, and smelting while stirring to obtain the RE containing Zn-Al alloy. The RE containing Zn-Al alloy wire of the RE containing Zn-Al alloy has compact structure, improved machining performance and use performance, and improved welding condition.
Description
Technical field
The present invention relates to a kind of Zinc-aluminium alloy silk containing rare earth and preparation method thereof, belong to the technical field of metal material preparation that is used for the spraying of metallic film capacitor end face.
Background technology
The metallic film capacitor end face metallize material that has been widely used is five yuan of lead base gold spraying materials, and its lead content is up to 53～59.4%, and lead has intensive toxicity to human body, is faced with the destiny that is eliminated in the unleaded upsurge in the whole world.Patent (application) number is 02111556.7 to disclose a kind of Zn-Al alloy wire and preparation method thereof, substitute as the lead base gold spraying material, this material can adapt to more elevated operating temperature than lead base gold spraying material, higher self intensity is arranged, thereby make the capacitor lead wire welding more reliable.When the 100KH high-frequency test, also has higher qualification rate.
But Zn-Al alloy wire also has unsatisfactory place, and at first, it is very responsive to the iron of unavoidably bringing in fusion process, as long as careless slightly, just processing difficulties, surface quality variation, the hardness of product silk increases and the snappiness variation, so that in use stifled rifle even fracture of wire; Secondly, also very responsive to the gas of bringing in the fusion process under the condition of non-vacuum melting, do not note slightly, promptly cause the ingot casting short texture, the otch brittle failure, the product silk draws difficulty, and finished silk tensile strength and unit elongation descend.
Summary of the invention
The purpose of this invention is to provide and a kind ofly improve the processing of Zn-Al alloy wire and Zinc-aluminium alloy silk containing rare earth of use properties and preparation method thereof by adding norium.
The present invention is a Zinc-aluminium alloy silk containing rare earth, include zinc, aluminium etc., it is characterized in that also comprising simultaneously norium (RE) based on the lightweight rare earth element, the composition of each component is respectively by weight percentage: aluminium (Al) 4.5～10%, based on the norium (RE) 0.01～0.12% of lightweight rare earth element, all the other are that zinc (Zn) and total amount are not more than 0.025% impurity; The composition of each component is respectively by weight percentage in the impurity: iron (Fe)＜0.01%, silicon (Si)＜0.01%, plumbous (Pb)＜0.005%, cadmium (Cd)＜0.003%, tin (Sn)＜0.001%.
Described norium based on the lightweight rare earth element (RE) can comprise lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd) etc.
Described norium based on the lightweight rare earth element (RE) is 0.04～0.08%.
The preparation method of Zinc-aluminium alloy silk containing rare earth of the present invention is: earlier the aluminium liquid of molten state is poured in the zinc liquid of molten state, or in the zinc liquid of molten state, add block aluminium, fusing and fully stirring heat up, add norium with the form of zinc base rare earth master alloy after the alloying based on the lightweight rare earth element, promptly get the aluminium zinc that contains rare earth after fusing and the stirring, be cast into cross section, garden extrusion billet again, be squeezed into crin then and through repeatedly drawing, Zinc-aluminium alloy silk containing rare earth.Its solidus temperature is 380 ℃, and liquidus temperature is 380-440 ℃.
Rare earth element is the common name of 17 kinds of extremely similar metallic elements of one group of chemical property, is a kind of as lively as a cricket metallic element, extremely difficultly purifies separately.But the adding of rare earth element, if＜0.01%, then quantity very little, this moment rare earth element mainly be present in nascent brilliant with the solid solution form and eutectic in, the rare earth phase do not occur, thereby effect is not remarkable, have only the ree content increase, make REAl
4Have when growing up condition preferably, could form the rare earth phase, play the effect of capturing detrimental impurity, but ree content is excessive, except making the cost rising, also forming the viscid rare earth oxide easily is mingled with and scum silica frost, the fusion-casting process difficulty is strengthened, thus the add-on of rare earth element, by weight percentage, be advisable with 0.01～0.12%, preferentially can be 0.04～0.08%.
The present invention through studying in many ways and verifying, compared with prior art has following outstanding advantage and positively effect by rationally add the norium based on lightweight rare earth elements such as lanthanum, cerium, praseodymium, neodymiums in Zn-Al alloy wire:
1, because alloy in fusion process, inevitably can suck a small amount of gas, behind the adding rare earth element, rare earth element can be at first and these gas chemical combination, forms rare earth compound, with the form emersion molten metal liquid level of slag, thereby the outgassing of playing makes the alloy structure densification.
2, for the main harmful impurity iron (Fe) in the Zn-Al alloy wire, main FeAl with the rich iron phase of needle-like
3Form exists, and FeAl
3For hard crisp very little in the intragranular solid solubility, matrix is isolated seriously, reduced the mechanical property of alloy, behind the adding rare earth element,, form rare earth compound at the crystal boundary place because rare earth compound has the effect of significantly capturing iron, can effectively reduce needle-like FeAl
3The formation probability and the granularity of hard crisp phase, and rare earth is block mutually, matrix is isolated little, thereby reduce or avoided the harmful effect of iron.
3, the adding of rare earth element makes the alloy grain refinement, and the alloy comprehensive mechanical performance is improved.
4, rare earth element is a kind of active element, the liquid rare earth element that accumulates in the surface down makes the surface energy of alloy significantly reduce, thereby reduced alloy and, improved the seam condition, made the combination of sprayed coating and base metal surface good by the interfacial tension between the material surface of metallize.
5, rare-earth oxidation membrane structure densification can be protected the unlikely further oxidation of interior metal, improves the solder joint color and luster on the sprayed coating, and resistance of oxidation is improved, and has also improved the end face spraying coating process condition of metallic film capacitor simultaneously.
6, gas content reduces in the alloy because the adding of rare earth element makes, and compact structure makes FeAl simultaneously
3Hard crisp reduce mutually and tissue attenuates, thereby effectively improved conductivity.
Embodiment
Embodiment 1: the composition of each component is respectively by weight percentage: aluminium (Al): 4.5-5.5%, contain the zinc-base master alloy 1～1.4% of 5% norium (RE), and all the other are that zinc (Zn) and total amount are not more than 0.025% impurity.
Embodiment 2: the composition of each component is respectively by weight percentage: aluminium (Al): 8-10%, contain the zinc-base master alloy 1～1.4% of 5% norium (RE), and all the other are that zinc (Zn) and total amount are not more than 0.025% impurity.
Embodiment 3: the composition of each component is respectively by weight percentage: aluminium (Al): 14-16%, contain the zinc-base master alloy 1～1.4% of 5% norium (RE), and all the other are that zinc (Zn) and total amount are not more than 0.025% impurity.
In the various embodiments described above, norium (RE) is mainly the lightweight rare earth element based on lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd) etc.
When the various embodiments described above prepare, to control total impurities＜0.025% simultaneously, Fe＜0.01% wherein, Si＜0.01%, Pb＜0.005%, Sn＜0.001%, Cd＜0.003%.
Comparative Examples 1: the composition of each component is respectively by weight percentage: aluminium (Al): 4.5-5.5%, and all the other are that zinc (Zn) and total amount are not more than 0.025% impurity.
Comparative Examples 2: the composition of each component is respectively by weight percentage: aluminium (Al): 8-10%, and all the other are that zinc (Zn) and total amount are not more than 0.025% impurity.
Comparative Examples 3: the composition of each component is respectively by weight percentage: aluminium (Al): 14-16%, and all the other are that zinc (Zn) and total amount are not more than 0.025% impurity.
With the Zinc-aluminium alloy silk containing rare earth of the various embodiments described above preparations, with the Zn-Al alloy wire that does not contain rare earth corresponding in the Comparative Examples after tested, every performance is listed as follows:
The present invention is not limited to the various embodiments described above, list the various embodiments described above, purpose is to illustrate because the adding of norium, make the performance of Zn-Al alloy wire that tangible improvement arranged, be that intensity has decline slightly, but elongation after fracture increases considerably, and improves thereby show as snappiness, and conductivity improves.Simultaneously, the various embodiments described above also be quite typical Zn-Al alloy wire product improves performance after adding norium prescription, but the sacrificial vessel body are selected to use.
Claims (2)
1, a kind of Zinc-aluminium alloy silk containing rare earth, include zinc, aluminium, it is characterized in that also comprising simultaneously norium based on the lightweight rare earth element, the composition of each component is respectively by weight percentage: aluminium 4.5～10%, based on the norium 0.01～0.12% of lightweight rare earth element, all the other are not more than 0.025% impurity for zinc and total amount; The composition of each component is respectively by weight percentage in the described impurity: iron＜0.01%, silicon＜0.01%, plumbous＜0.005%, cadmium＜0.003%, tin＜0.001%; Described norium based on the lightweight rare earth element comprises lanthanum, cerium, praseodymium, neodymium.
2, by the described Zinc-aluminium alloy silk containing rare earth of claim 1, it is characterized in that described norium based on the lightweight rare earth element is 0.04～0.08%.
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| CNB2004100663491A CN100465313C (en) | 2004-09-11 | 2004-09-11 | Zinc-aluminium alloy silk containing rare earth and producing process thereof |
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| CNB2004100663491A CN100465313C (en) | 2004-09-11 | 2004-09-11 | Zinc-aluminium alloy silk containing rare earth and producing process thereof |
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| CN1609246A CN1609246A (en) | 2005-04-27 |
| CN100465313C true CN100465313C (en) | 2009-03-04 |
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| CN100513640C (en) * | 2007-05-17 | 2009-07-15 | 戴国水 | Metal spraying material without lead |
| CN101538669B (en) * | 2008-10-23 | 2011-04-20 | 江苏麟龙新材料股份有限公司 | Ternary adjusting alloy specially used for galvanization and manufacturing method thereof |
| CN101906604B (en) * | 2010-07-30 | 2013-01-23 | 江苏中矿大正表面工程技术有限公司 | Rare earth aluminum alloy wire for thermal spraying |
| CN102703781B (en) * | 2012-01-13 | 2014-04-02 | 江苏麟龙新材料股份有限公司 | Zinc-aluminum alloy wire containing Ce, Pr and Nd and production method thereof |
| CN102703779B (en) * | 2012-01-13 | 2013-10-23 | 江苏麟龙新材料股份有限公司 | La-Ce-Pr-containing zinc-aluminum alloy wire and manufacturing method thereof |
| CN102703778B (en) * | 2012-01-13 | 2013-10-23 | 江苏麟龙新材料股份有限公司 | La-Pr-containing zinc-aluminum alloy wire and manufacturing method thereof |
| CN102703777B (en) * | 2012-01-13 | 2013-10-23 | 江苏麟龙新材料股份有限公司 | Pr-Nd-containing zinc-aluminum alloy wire and manufacturing method thereof |
| CN102703780B (en) * | 2012-01-13 | 2013-10-23 | 江苏麟龙新材料股份有限公司 | Zinc-aluminum alloy wire containing La, Ce and Nd and production method thereof |
| RS59860B1 (en) * | 2013-10-31 | 2020-02-28 | Umicore Building Products France | Patterned rolled zinc alloy sheet |
| CN103614580B (en) * | 2013-11-21 | 2015-10-28 | 常州大学 | A kind of method of efficient melting Galfan alloy |
| CN104195371A (en) * | 2014-09-18 | 2014-12-10 | 无锡贺邦金属制品有限公司 | Damping alloy |
| CN104988354B (en) * | 2015-05-28 | 2017-04-05 | 无锡宏广电容器有限公司 | Preparation method and its spraying coating process of a kind of thin film capacitor with metal spraying silk |
| CN106702213B (en) * | 2017-02-16 | 2018-07-31 | 广州粤晖金属机械防护技术有限公司 | A kind of zinc-aluminium Mg alloy wire and its preparation method and application containing rare earth |
| CN108018521A (en) * | 2017-12-22 | 2018-05-11 | 黄山申格电子科技有限公司 | A kind of motor capacitor metal spraying technique |
| CN109136597A (en) * | 2018-09-13 | 2019-01-04 | 安阳工学院 | One kind improving the corrosion proof method of as cast condition zinc-aluminum eutectic alloy by addition Nd |
| CN110004388A (en) * | 2019-03-11 | 2019-07-12 | 贵州电网有限责任公司 | Carbon nano-tube modification rare earth modifies hot-dip galvanized alloy coating for protection against corrosion and preparation method |
| CN109897977A (en) * | 2019-03-22 | 2019-06-18 | 安阳工学院 | One kind improving the corrosion proof method of as cast condition zinc-aluminum eutectic alloy by addition yttrium |
| CN112323021A (en) * | 2019-08-05 | 2021-02-05 | 河南华佳新材料技术有限公司 | Production process for reducing capacity loss of metalized film capacitor after charging and discharging |
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