WO2006093334A1 - Procédé de fusion d’un alliage contenant un métal haute pression de vapeur - Google Patents

Procédé de fusion d’un alliage contenant un métal haute pression de vapeur Download PDF

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Publication number
WO2006093334A1
WO2006093334A1 PCT/JP2006/304525 JP2006304525W WO2006093334A1 WO 2006093334 A1 WO2006093334 A1 WO 2006093334A1 JP 2006304525 W JP2006304525 W JP 2006304525W WO 2006093334 A1 WO2006093334 A1 WO 2006093334A1
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WO
WIPO (PCT)
Prior art keywords
gas
alloy
melting
helium
metal
Prior art date
Application number
PCT/JP2006/304525
Other languages
English (en)
Japanese (ja)
Inventor
Etsuo Akiba
Hirotoshi Enoki
Naoyoshi Terashita
Shigeru Tsunokake
Original Assignee
Japan Metals And Chemicals Co., Ltd.
National Institute Of Advanced Industrial Science And Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Metals And Chemicals Co., Ltd., National Institute Of Advanced Industrial Science And Technology filed Critical Japan Metals And Chemicals Co., Ltd.
Priority to EP06728794.6A priority Critical patent/EP1875978B1/fr
Priority to JP2007506056A priority patent/JP4956826B2/ja
Priority to CN2006800067151A priority patent/CN101132871B/zh
Priority to US11/817,459 priority patent/US20090007728A1/en
Publication of WO2006093334A1 publication Critical patent/WO2006093334A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B22D23/06—Melting-down metal, e.g. metal particles, in the mould
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C18/00—Alloys based on zinc
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C22/00—Alloys based on manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium

Definitions

  • the present invention has a low melting point and boiling point such as Mg, C a, Li, Zn, Mn and Sr.
  • Metals such as Mg, Ca, Zn and Li, and alloys containing these metals are lighter in weight and higher in specific strength than other transition metals such as iron and their alloys. Applications as structural materials and functional materials are widely expected.
  • Mg and Ca are abundant in the earth's crust and seawater, are low in cost, and do not adversely affect the human body.
  • metals such as Mg, Ca, Zn and Li, and their alloys have low melting points and boiling points, and high vapor pressures.
  • metal dust generated by evaporation contaminates the melting furnace.
  • Mg in particular is very active, and if it adheres to the inner wall of the melting furnace, there is a high risk of ignition or explosion when it comes into contact with the atmosphere.
  • the smoke of the evaporated metal fine powder contaminates the visual observation window of the melting furnace, or the view is blocked, and it is judged whether or not the alloy is completely dissolved, the power that the stirring is sufficient, There are also problems such as being unable to visually confirm and judge whether or not. In addition, positive Since it is difficult to accurately estimate the amount of evaporation, there is also the problem that it is not possible to produce an alloy with the target chemical composition.
  • the alloy containing Mg, C a, Zn, Li and the like can be manufactured by a mechanical alloying method such as Bono remilling in addition to the melting method.
  • This alloy manufacturing method is a method that does not dissolve the metal of the raw material, so the above problems due to the generation of metal fines do not occur, but contamination due to mixing of iron etc. from the mill pot and the homogeneity of the alloy There are problems such as a decrease in In addition, since it takes a long time to manufacture, there is a problem that the manufacturing cost is high, and it is not suitable for mass production.
  • a main object of the present invention is to propose a melting method that is advantageous for producing an alloy containing a metal having a low melting point, a low boiling point, and a high vapor pressure by a melting method.
  • Another object of the present invention is to reduce the risk and contamination of the target chemical component alloy by ignition and vaporization of active metal fine powder, while accurately controlling the target chemical component alloy.
  • the purpose is to propose a method for manufacturing a large amount and safely.
  • the inventors have intensively studied to realize the above object. As a result, the inventors have obtained the knowledge that it is effective to optimize the gas components constituting the dissolved atmosphere, and particularly to use helium gas, and have developed the present invention.
  • the present invention relates to a method for melting and producing an alloy containing any one or more of Mg, Ca, Li, Zn, Mn, and Sr.
  • a melting method of a high vapor pressure metal-containing alloy characterized in that helium-containing gas is used.
  • the helium concentration in the atmospheric gas is 10 V o 1%.
  • the atmospheric gas is preferably a mixed gas of helium and a gas that does not react with a source metal such as nitrogen or argon.
  • the pressure of the atmosphere gas is preferably 0.0 IMP a to IMP a.
  • an alloy containing a low melting point, low boiling point, high vapor pressure metal such as Mg, Ca, Li, and Zn, for example, the metal and A 1 or N Alloys with the target chemical composition can be produced in large quantities with high accuracy and safety at low cost without incurring dangers such as ignition and contamination due to evaporated active metal fines. .
  • the melting method of the present invention using a helium-containing gas as the atmospheric gas can solve the above-described problems caused by the active metal fine powder, and the solid metal has a high solidification rate due to the high thermal conductivity of the helium gas. It also has the feature of increasing the effect of rapid solidification. Therefore, according to the method of the present invention, it is possible to produce a special alloy that has been conventionally produced using a melting apparatus dedicated to rapid solidification, even with an ordinary melting apparatus.
  • Figure 1 is Heriumugasu concentration in the atmosphere gas at the time of dissolving the C a M g 2 alloy is a graph showing the effect on dissolution yield of M g.
  • Figure 3 shows the pressure composition of the La-Ni hydrogen storage alloy dissolved in a helium gas atmosphere and the same alloy dissolved in an argon gas atmosphere. It is the figure which compared and showed the temperature diagram. The best form for inventing
  • the melting method of the present invention is used when melting an alloy containing one or more of low melting point, low boiling point and high vapor pressure metals such as Mg, Ca, Li and Zn. It is characterized in that helium-containing gas is used as the melting atmosphere. When this helium-containing gas is used as a melting atmosphere, it becomes possible to prevent the agglomeration of fine metal powder generated by evaporation during melting, greatly reducing the risk of ignition and contamination by the fine metal agglomerates. In addition, it is possible to manufacture a large amount of an alloy having a target chemical composition with high accuracy and safely.
  • this helium-containing gas has a higher thermal conductivity (approximately 3 times that of argon) and lower density (0.1 times that of argon) than other inert gases. It is presumed that it can be obtained by a long process (about 3 times that of argon).
  • hydrogen has the same characteristics, but hydrogen reacts with the source metal to form a metal hydride, so it is not suitable as a dissolved atmosphere gas. However, if a metal with a low melting point, low boiling point, and high vapor pressure that does not react with hydrogen is dissolved, the same effect as helium should be expected when a hydrogen-containing gas is used as the atmospheric gas. Can do.
  • helium gas is very expensive. Therefore, from the viewpoint of cost reduction, it is preferable that this helium gas is partially replaced with an inexpensive gas that does not react with the raw material metal. Therefore, the inventors conducted experiments to replace helium with various other gases, and as a result, if a gas in which a part of the helium gas is replaced with a gas that does not react with the source metal such as nitrogen or argon is evaporated, It was proved that the risk of ignition and contamination caused by agglomeration of generated metal fines can be considerably reduced.
  • Argon gas is the most preferable gas for replacing helium gas. The reason is that argon gas is inexpensive and does not react with Mg, C a, Li and Zn even at high temperatures.
  • the substitution of helium with other inert gases was found to be limited.
  • the helium content in the powerful mixed gas needs to be at least 10 V o 1%, preferably 25 V o 1% or more, more preferably 50 V o 1% or more. More preferably, it is 95 V o 1% or more, but of course, it may be 90-100 V o 1%.
  • the lower limit of the proportion of helium as the atmospheric gas is set to 10 v o l% because the above-described effects of helium cannot be obtained if it is less than 1%.
  • the pressure of the melting atmosphere made of helium-containing gas is preferably 0.0 IMP a to IMP a.
  • the reason is that if the pressure is less than 0.0 IMP a, the evaporation temperature is remarkably lowered, so that evaporation is promoted and the amount of metal fines generated cannot be reduced. On the other hand, if it exceeds IMP a, the amount of evaporation decreases, but the melting point rises and dissolution becomes difficult.
  • the pressure range of the helium-containing gas is the pressure at room temperature before melting, and may exceed the above range when the temperature of the furnace becomes high during the melting process.
  • the helium-containing gas supplied as the atmospheric gas may contain an impurity gas such as oxygen, carbon dioxide, and water vapor within a range that does not impair the function of the present invention.
  • the content is preferably lma ss% or less. The reason for this is that if it exceeds lma ss%, these gases react with Mg, Ca, Li, Zn, etc. during dissolution, producing oxides, hydroxides, carbides, etc. This is because it becomes impossible to produce chemical composition alloys and compounds.
  • a Mg 2 As a raw material for the hydrogen storage alloy C a Mg 2 , prepare a total of 1 kg of Mg and Ca metals so that the molar ratio of them is 2: 1, and charge all of these into the induction melting melting furnace. and, the furnace was evacuated to 8 X 10_ 3 T orr, was then introduced until Heriumugasu (concentration 1 OO vol%) to 600To rr as the atmospheric gas. Then, while filling the furnace with this atmospheric gas, the melting furnace temperature is heated to 1 100 ° C to melt the raw material, and further, the molten metal temperature of the alloy is maintained at 1050 ° C for 30 minutes. did.
  • the molten alloy was poured onto a water-cooled surface plate, and cooled and solidified at a cooling rate of 1000 ° CZ seconds to produce a C a Mg 2 alloy.
  • the dissolution yield and chemical composition were measured by the following methods (1) and (2).
  • Example 1 of the present invention using helium gas as the melting atmosphere gas, the dissolution yield is as high as 98.2% or more, and an alloy can be manufactured with high accuracy within ⁇ 1% of the target alloy composition. I can see that ⁇ table 1 ⁇
  • a CaMg 2 alloy was produced in the same manner as Invention Example 1 except that argon gas (concentration: 100 V o 1%) was used as the atmospheric gas.
  • argon gas concentration: 100 V o 1%) was used as the atmospheric gas.
  • the dissolution yield and chemical composition were measured by the methods (1) and (2) above, and the results are also shown in Table 1.
  • a Ca Mg 2 alloy was produced in the same manner as in Invention Example 1 except that the concentration of helium gas introduced as the atmospheric gas was changed to 75, 50, 25 V o 1% (remaining argon gas).
  • the dissolution yield and chemical composition were measured by the methods (1) and (2) above, and the results are also shown in Table 1. These results show that when the helium gas concentration exceeds 50 V o 1% (Invention Examples 2 and 3), the dissolution yield is as high as about 98%, and the target alloy composition can be obtained with high accuracy. . On the other hand, when the helium gas concentration is 25 V o 1% (Invention Example 4), the dissolution yield and the alloy composition are inferior to Invention Examples 1 to 3.
  • FIG. 1 shows the relationship between the helium gas concentration obtained from the results of Invention Examples 1 to 4 and Comparative Example 1 and the dissolution yield.
  • Figure 1 shows that the dissolution yield improves with increasing helium gas concentration.
  • Example 5 of the present invention Except for using the C a and A 1 as an alloy raw material, to produce a C a A l 2 alloy in the same manner as in Invention Example 1, the C AMG 2 alloy obtained above (1) and (2) The dissolution yield and chemical composition were measured by this method, and the results are also shown in Table 1. From this result, it can be seen that in Example 5 of the present invention, the dissolution yield was as high as about 98%, and the target alloy was obtained with high accuracy within ⁇ 1% of the target A] composition.
  • Example 6 of the present invention the dissolution yield was as high as about 98%, and the target alloy was obtained with high accuracy within ⁇ 2% of the target Ni composition ratio.
  • Example 7 of the present invention Except for using the C a and N i as an alloy raw material, to produce a C a N i 2 alloy in the same manner as in Experimental Example 1, the C a N i 2 alloy obtained above (1) and ( The dissolution yield and chemical composition were measured by the method 2), and the results are also shown in Table 1. From this result, it can be seen that in Example 7 of the present invention, the dissolution yield is as high as about 98%, and the target alloy is obtained with high accuracy within ⁇ 2% with respect to the target Ni composition ratio. .
  • a La 1 Ni-based hydrogen storage alloy (Invention Example 8) prepared by dissolution in a helium gas atmosphere at 100 V o 1% and an argon gas at 100 V o 1% atmosphere were prepared.
  • the pressure composition and other figures were measured, and the results are shown in FIG. From Fig. 3, the alloy of Invention Example 8 has a flat and wide plateau region compared to the alloy of Comparative Example 2, and the alloy of Invention Example 8 that has been rapidly solidified by helium gas has excellent homogeneity. It can be seen that it is an alloy.
  • the technology of the present invention is not only used as a mass production technology for alloys containing metals with low melting point, low boiling point and high vapor pressure, such as Mg, Ca, Zn and Li, but also The present invention can also be applied to the case where a metal is dissolved alone, or to the dissolution of a compound used in a semiconductor such as gallium monoarsenide or other compounds. Furthermore, the technique of the present invention can also be applied to a dissolution technique for structural materials, functional materials, semiconductor compounds, and other compounds made of lightweight metals and alloys used in the next generation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L’invention concerne un procédé de fabrication d’un alliage contenant un métal ayant un bas point de fusion, un bas point d’ébullition et une haute pression de vapeur, comme par exemple le magnésium, le calcium, le lithium, le zinc, le manganèse ou le strontium, par fusion, le procédé impliquant l'emploi d'un gaz contenant de l’hélium comme gaz atmosphérique pour la fusion. Ainsi, on peut obtenir un alliage contenant un tel métal et ayant une composition chimique cible, de manière fiable et peu coûteuse avec une précision satisfaisante tout en évitant le problème de voir de fines particules d’un métal actif vaporisé provoquer un incendie ou une pollution. Par ailleurs, l’utilisation du gaz contenant de l’hélium comme gaz atmosphérique permet de refroidir et de solidifier rapidement le métal en fusion du fait de la conductivité thermique élevée de l’hélium gazeux. On peut ainsi produire un alliage spécial même avec un appareil de fusion ordinaire.
PCT/JP2006/304525 2005-03-02 2006-03-02 Procédé de fusion d’un alliage contenant un métal haute pression de vapeur WO2006093334A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06728794.6A EP1875978B1 (fr) 2005-03-02 2006-03-02 Procédé de fusion d'un alliage contenant un métal haute pression de vapeur
JP2007506056A JP4956826B2 (ja) 2005-03-02 2006-03-02 高蒸気圧金属含有合金の溶解方法
CN2006800067151A CN101132871B (zh) 2005-03-02 2006-03-02 含有高蒸汽压金属的合金的熔化方法
US11/817,459 US20090007728A1 (en) 2005-03-02 2006-03-02 Method For Melting an Alloy Containing a Metal of a High Vapor Pressure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005056985 2005-03-02
JP2005-056985 2005-03-02

Publications (1)

Publication Number Publication Date
WO2006093334A1 true WO2006093334A1 (fr) 2006-09-08

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PCT/JP2006/304525 WO2006093334A1 (fr) 2005-03-02 2006-03-02 Procédé de fusion d’un alliage contenant un métal haute pression de vapeur

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US (1) US20090007728A1 (fr)
EP (1) EP1875978B1 (fr)
JP (1) JP4956826B2 (fr)
KR (1) KR20070107757A (fr)
CN (1) CN101132871B (fr)
WO (1) WO2006093334A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011162385A1 (fr) 2010-06-24 2011-12-29 株式会社三徳 PROCESSUS DE PRODUCTION D'ALLIAGE DE STOCKAGE D'HYDROGÈNE À BASE DE (TERRES RARES)-Mg-Ni
CN106978557A (zh) * 2017-05-11 2017-07-25 江苏理工学院 一种镁锂合金及其制备方法
CN107227421A (zh) * 2017-05-11 2017-10-03 江苏理工学院 镁锂合金及其制备方法

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US10331434B2 (en) * 2016-12-21 2019-06-25 Quanta Computer Inc. System and method for remotely updating firmware

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JP2003239033A (ja) * 2001-12-14 2003-08-27 Matsushita Electric Ind Co Ltd マグネシウム合金素形材とその鋳造方法
JP2004195527A (ja) * 2002-12-20 2004-07-15 Seiko Epson Corp 材料溶解装置およびこれを設置した射出成型機

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JPH10156577A (ja) * 1996-11-20 1998-06-16 H K M Co:Kk 処理室
JP2003113430A (ja) * 2001-10-03 2003-04-18 Sumitomo Metal Ind Ltd マグネシウムおよびマグネシウム合金の溶解方法および鋳造方法
JP2003239033A (ja) * 2001-12-14 2003-08-27 Matsushita Electric Ind Co Ltd マグネシウム合金素形材とその鋳造方法
JP2004195527A (ja) * 2002-12-20 2004-07-15 Seiko Epson Corp 材料溶解装置およびこれを設置した射出成型機

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011162385A1 (fr) 2010-06-24 2011-12-29 株式会社三徳 PROCESSUS DE PRODUCTION D'ALLIAGE DE STOCKAGE D'HYDROGÈNE À BASE DE (TERRES RARES)-Mg-Ni
US9293765B2 (en) 2010-06-24 2016-03-22 Santoku Corporation Process for production of (rare earth)-Mg-Ni-based hydrogen storage alloy
CN106978557A (zh) * 2017-05-11 2017-07-25 江苏理工学院 一种镁锂合金及其制备方法
CN107227421A (zh) * 2017-05-11 2017-10-03 江苏理工学院 镁锂合金及其制备方法
CN107227421B (zh) * 2017-05-11 2019-04-09 江苏理工学院 镁锂合金及其制备方法

Also Published As

Publication number Publication date
US20090007728A1 (en) 2009-01-08
EP1875978A1 (fr) 2008-01-09
CN101132871B (zh) 2011-04-20
JP4956826B2 (ja) 2012-06-20
EP1875978A4 (fr) 2008-11-05
CN101132871A (zh) 2008-02-27
KR20070107757A (ko) 2007-11-07
EP1875978B1 (fr) 2019-05-08
JPWO2006093334A1 (ja) 2008-08-07

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