WO2007135806A1 - チタン系合金球状粉末の製造方法 - Google Patents
チタン系合金球状粉末の製造方法 Download PDFInfo
- Publication number
- WO2007135806A1 WO2007135806A1 PCT/JP2007/055861 JP2007055861W WO2007135806A1 WO 2007135806 A1 WO2007135806 A1 WO 2007135806A1 JP 2007055861 W JP2007055861 W JP 2007055861W WO 2007135806 A1 WO2007135806 A1 WO 2007135806A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- particles
- titanium
- alloy
- sponge
- powder
- Prior art date
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Classifications
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Definitions
- the present invention relates to a method for producing a titanium alloy spherical powder capable of reducing the difference in alloy composition depending on the particle size of the product.
- One method for producing a titanium-based alloy spherical powder used as a powder metallurgy raw material is based on a gas atomizing method.
- the mixed powder is compressed into a melting raw material (compact), and the molten metal obtained by melting this is scattered into fine droplets with high-pressure gas. And solidifying it to produce spherical titanium alloy powder.
- Gas atomization is a process in which the molten metal obtained by melting the compact is dispersed by high-pressure gas and solidified, and particles with high sphericity can be produced stably.
- Patent Document 1 Japanese Patent Laid-Open No. 5-93213
- Patent Document 2 JP-A-6-116609
- Patent Document 3 Japanese Patent Laid-Open No. 2002-241807
- gas atomized Ti powder is very expensive compared to sponge titanium powder, and measures using it as a raw material are economical and result in an increase in the price of the product powder.
- the additive metal element ratio is as small as 10%.
- the Ti_Al alloy powder (additional metal element ratio 36%) may not be allowed to have a concentration difference between the particle sizes of Ti_6Al_4V alloy powder. Uniform composition between particle sizes is a particularly important technical issue. Disclosure of the invention
- the purpose of the present invention is to greatly and economically reduce the alloy composition difference due to the product particle size. Even when the product is Ti 6 A1-4 V alloy powder, the alloy composition difference due to the product particle size is reduced.
- An object of the present invention is to provide a method for producing a titanium-based alloy spherical powder that can be effectively reduced.
- the present inventors paid attention to the type of raw material titanium particles and the method of mixing with additive metal element particles.
- the use of gas atomized titanium powder must be avoided to reduce raw material costs, and the use of sponge titanium powder is indispensable. Therefore, the present inventors planned to produce a titanium sponge powder as fine as possible. This is because it is considered that if the titanium sponge powder is fine, the mixing with the alloy element powder is improved and the difference in the alloy composition due to the product particle size can be eliminated.
- a jaw crusher and classified (sieving) to obtain a particle size of 0.775-12. 7mm fine grain products are manufactured.
- A1 and V mother alloy grains were simply mixed with the Ti grains by a V-type mixer to similarly produce a gas atomized Ti alloy powder.
- the nonuniformity of the A1 concentration due to the product particle size was slightly eliminated, but it was not satisfactory.
- the nonuniformity of the A1 concentration is roughly proportional to the nonuniformity of the V concentration, so the nonuniformity of the additive metal element concentration can be represented by the nonuniformity of the A1 concentration.
- the present inventors reconsidered the method for eliminating the non-uniformity of the additive metal element concentration, and finally came to the mixing method of sponge titanium particles and additive metal element particles. It was. Then, the simple mixing with the V-type mixer so far was changed to the pulverization mixing with a ball mill. As a result, despite the use of the above-mentioned three types of titanium sponge particles with average particle sizes of 0.3 mm, 1 mm and 3 mm as the Ti particles, the deviation from the Al concentration ratio due to the product particle size is Decreased dramatically.
- the titanium alloy spherical powder production method of the present invention has been completed on the basis of strength and knowledge, and the titanium sponge particles and the additive metal element particles are mixed by a mixer having a pulverizing function.
- a step of forming mixed grains obtained by mixing by a mixer into a rod-shaped molten raw material by compression, a step of inductively heating the formed rod-shaped molten raw material in an insoluble atmosphere, and non-contact melting, and non-contact Including a step of pulverizing the molten alloy formed by melting by a gas atomizing method.
- an amorphous sponge titanium particle is obtained by using a mixer having a pulverizing function for mixing the titanium particles and the additive metal element particles.
- the additive metal element grains are soft A1 grains, rubbing against the sponge titanium grains exclusively by grinding occurs, and when they are brittle A1-V grains, they are exclusively finely divided into fine grains.
- the titanium sponge particles are fitted into the recesses on the rough surface, and in either case, the titanium particles and the additive metal element particles are mixed well, and the titanium particles become fine spherical particles. Even if this is not the case, the effect of eliminating non-uniformity equivalent to that of fine spherical particles can be obtained. This is the first feature of the present invention.
- the mixer having a pulverizing function is specifically a ball mill, an attritor, or a vibration mill, and a particularly preferable mixer is a ball mill having a remarkable grinding action and grinding action by rubbing.
- the average particle size of the titanium sponge particles used as the raw material titanium particles is preferably 0.3 to 5 mm, more preferably 0.4 to 3 mm, and particularly preferably 0.6 to 3 mm. . Because the grain In addition to the difficulty in manufacturing sponge titanium particles with a diameter of less than 0.3 mm, the concentration of impurities such as impurity metal elements and oxygen in the product powder tends to increase as the particle size of the sponge titanium particles decreases. It is. This is because the surface area of the titanium sponge particles increases and contamination in the manufacturing process of the titanium sponge particles increases.
- the sponge titanium particles having a diameter of 3 mm or more it is possible to use a sieving material derived from the finely pulverizing and classifying step of the sponge titanium for wrought material, and its use is economically preferable. In other words, it is one of the features of the present invention that a particularly cheap sieving material can be used among the sponge titanium particles.
- the gas atomization method uses the force of using Ti grains refined by the HDH method.
- the manufacturing cost increases and the product price increases.
- a low-grade product called a sieve product can be used effectively, so that the cost of fine particles can be reduced. This is the third feature of the present invention.
- the feature of the present invention is that the composition of the product powder can be made uniform even if the particle size of the sponge titanium particles is large. The effect is difficult to obtain, and from this point of view, 5 mm or less is preferable, and 3 mm or less is particularly preferable.
- the type of additive metal element grains is appropriately selected according to the product composition.
- the product when the product is Ti A1 alloy powder, it is A1 grain, and when Ti 6A1-4V alloy powder is A, it is A.
- A1—V master alloy grains obtained by melting vertical and V grains, or A1 and V.
- the use of A1-V master alloy grains is more advantageous in terms of uniform composition than the use of A and V grains. Since the A and V grains have very different melting points, the pre-dissolution of A 1 grains progresses due to the action of applying to the sponge titanium grains, which is disadvantageous in terms of uniform composition.
- the average particle size of the additive metal element particles is preferably 0.2 to 50 mm, and particularly preferably 0.5 to 30 mm. If this particle size is too small, the effect of the present invention cannot be sufficiently obtained because the additive metal element particles, which are the characteristic action in the present invention, cannot be sufficiently applied to the sponge titanium particles due to grinding or grinding. It becomes insufficient. On the other hand, if it is too large, the pulverization efficiency at the beginning of mixed pulverization will deteriorate. [0029] As described above, the problem of the difference in alloy composition due to the product particle size becomes more prominent in alloy production with a small additive metal element ratio. The present invention that can effectively solve this problem is effective in manufacturing an alloy having a small additive metal element ratio, specifically, in manufacturing an alloy having an additive metal element ratio of 20% or less. . /. It is effective in the manufacture of Ti_6Al_4V alloy.
- the titanium alloy spherical powder production method of the present invention comprises mixing titanium sponge particles and additive metal element particles, and mixing the particles when producing titanium alloy spherical powder by a gas atomizing method as a rod-shaped melting raw material.
- a mixer that has a pulverizing function, it is possible to provide the alloy powder with the same high level of uniformity and alloy composition as when using expensive fine spherical titanium particles by the gas atomization method. can do. Therefore, high-quality alloy spherical powder can be manufactured much more economically than before.
- a relatively coarse sponge titanium particle having an average particle diameter of 0.3 mm or more is prepared.
- the sieve material and the product (sieved product) produced in the refinement classification process by the jaw crusher of the sponge titanium for wrought material are classified and used.
- the additive metal element particles a comparatively large-diameter A stand having an average particle diameter of 0.2 mm or more, preferably 0.5 mm or more is prepared.
- the raw material powder is prepared, as a first step, sponge titanium particles and A1 particles are mixed at a weight ratio of 64:36 using a ball mill.
- the ball mill has not only a mixing function but also a dusting function.
- the A-size is reduced to a small size, and the comparatively soft A-size is ground by pressing the particles together and rubbed against the surface of the titanium sponge particles.
- the A1 grains are firmly fixed to the uneven surface of the titanium sponge grains, and the applied force is in a state where the fine particles are uniformly mixed.
- the mixed particles are compressed into a rod-shaped melting raw material.
- a known method such as a die press or a cold isostatic press can be used.
- Ti_Al alloy spherical powder is produced by a gas atomization method as a third step. Specifically, a rod-shaped melting raw material is set up vertically in an inert gas chamber, and is supplied from the top to the bottom inside an annular induction heating coil that is also arranged vertically. As a result, the melted raw material is melted in a non-contact manner sequentially, and Ti-1A1 molten alloy is continuously formed and flows downward. Then, an inert gas is blown into the molten metal flow from the surroundings, and the Ti-1A1 alloy spherical powder is produced by being scattered and solidified.
- the low melting point A1 grains are first dissolved in the third step, which causes the alloy composition to vary.
- the A standing force S is coated on the surface of the titanium sponge particles and is firmly fixed, preventing the pre-dissolution of A1 and eliminating the alloy composition difference.
- the induction heating coil as shown in Patent Document 3, a coiled coil whose diameter gradually decreases from top to bottom is preferable.
- a relatively coarse sponge titanium particle having an average particle diameter of 0.3 mm or more is prepared.
- the sieve material and the product (sieved product) produced in the refinement classification process by the jaw crusher of the sponge titanium for wrought material are classified and used.
- sponge titanium particles and A1-V alloy particles are mixed at a weight ratio of 9: 1 using a ball mill.
- the ball mill has not only a mixing function but also a grinding function. Since the A1-V master alloy grains are also brittle with T beams, they are pulverized particularly small during the mixing process, and are tightly packed and fixed in the recesses on the rough surface of the titanium sponge grains. It will be as if it were uniformly mixed.
- the mixed particles are compressed into a rod-shaped melting raw material.
- Compression molding methods include die press, cold isostatic press, etc. These well-known methods can be used.
- the third step is Ti-6A1 by gas atomization.
- 4V alloy spherical powder is produced. Specifically, a rod-shaped dissolved raw material is set up vertically in an inert gas chamber, and supplied from the top to the bottom inside an annular induction heating coil that is also arranged vertically. As a result, the melted raw material gradually melts in a non-contact manner from below, and a molten T1-6A1-4V alloy is continuously formed and flows downward. Then, an inert gas is blown into this molten metal stream from the surroundings, and it is finely scattered and solidified to produce Ti_6Al_4V alloy spherical powder.
- the A1_V alloy particles which are additive metal element particles, are pulverized into fine particles in a first step and firmly fixed to the surface of the sponge titanium particles by mechanical fitting. Therefore, the prior dissolution of the additive metal element is prevented, and the alloy composition difference is eliminated.
- the induction heating coil a spiral coil whose diameter gradually decreases from top to bottom as shown in Patent Document 3 is preferable.
- the impurity concentration is suppressed to a low level because the titanium titanium particles have a large particle size and a small surface area.
- the results are shown for the case where the average particle size of the A1-V alloy particles is 10 mm, which is the same as described above, and 0.5 mm which is smaller than this. .
- the impurity concentration is suppressed to a low level close to that when the average particle size of sponge titanium particles is 3 mm because the particle size is larger and the surface area is smaller than when the average particle size of sponge titanium particles is 0.3 mm.
- the product Ti-6A1-4V alloy spherical powder has a fine particle size of 45 m or less.
- the additive metal element concentration represented here by the A1 concentration
- the concentration of the added metal element here, A1 concentration
- the present invention is effective in eliminating the concentration deviation in this case.
- the present invention can greatly and economically reduce the difference in alloy composition depending on the product particle size.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/299,854 US20090107294A1 (en) | 2006-05-18 | 2007-03-22 | Process for producing spherical titanium alloy powder |
EP07739304A EP2022582A4 (en) | 2006-05-18 | 2007-03-22 | METHOD FOR MANUFACTURING SPHERICAL TITANIUM ALLOY POWDER |
AU2007252758A AU2007252758A1 (en) | 2006-05-18 | 2007-03-22 | Process for producing spherical titanium alloy powder |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006138730A JP4947690B2 (ja) | 2006-05-18 | 2006-05-18 | チタン系合金球状粉末の製造方法 |
JP2006-138730 | 2006-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007135806A1 true WO2007135806A1 (ja) | 2007-11-29 |
Family
ID=38723119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/055861 WO2007135806A1 (ja) | 2006-05-18 | 2007-03-22 | チタン系合金球状粉末の製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090107294A1 (ja) |
EP (1) | EP2022582A4 (ja) |
JP (1) | JP4947690B2 (ja) |
KR (1) | KR20090018143A (ja) |
AU (1) | AU2007252758A1 (ja) |
WO (1) | WO2007135806A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2489244B (en) | 2011-03-22 | 2013-12-18 | Norsk Titanium Components As | Method for production of alloyed titanium welding wire |
PL2701869T3 (pl) * | 2011-04-27 | 2017-02-28 | Materials & Electrochemical Research Corp. | NISKOKOSZTOWY SPOSÓB WYTWARZANIA SFERYCZNEGO PROSZKU TYTANOWEGO Ti6Al4V |
ITMO20130084A1 (it) * | 2013-03-29 | 2014-09-30 | K4Sint S R L | Procedimento per l'alligazione meccanica di metalli |
AU2015259108B2 (en) | 2014-05-13 | 2018-03-01 | University Of Utah Research Foundation | Production of substantially spherical metal powers |
WO2016090052A1 (en) | 2014-12-02 | 2016-06-09 | University Of Utah Research Foundation | Molten salt de-oxygenation of metal powders |
KR102197604B1 (ko) * | 2017-11-24 | 2021-01-05 | 한국재료연구원 | 고온 특성이 우수한 3d 프린팅용 타이타늄-알루미늄계 합금 및 이의 제조방법 |
CN109877332A (zh) * | 2019-04-16 | 2019-06-14 | 上海材料研究所 | 一种提高钛或钛合金气雾化粉末细粉率的方法 |
KR102370831B1 (ko) * | 2020-10-26 | 2022-03-07 | 한국생산기술연구원 | 균일도가 향상된 나노입자 분산강화 타이타늄 분말 및 그 제조 방법 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH02263947A (ja) * | 1989-04-03 | 1990-10-26 | Tokushu Denkyoku Kk | 炭火物を分散した高強度鋼の製造方法 |
JPH0593213A (ja) | 1991-06-04 | 1993-04-16 | Sumitomo Shichitsukusu Kk | チタンおよびチタン合金粉末の製造方法 |
JPH0598368A (ja) * | 1991-10-08 | 1993-04-20 | Nkk Corp | 高密度粉末焼結チタン合金の製造方法 |
JPH05239571A (ja) * | 1992-03-02 | 1993-09-17 | Sumitomo Light Metal Ind Ltd | Ti−Al系金属間化合物の製造方法 |
JPH06116609A (ja) | 1992-10-06 | 1994-04-26 | Sumitomo Sitix Corp | 金属粉末の製造方法 |
JP2002241807A (ja) | 2001-02-13 | 2002-08-28 | Sumitomo Titanium Corp | チタン−アルミ系合金粉末の製造方法 |
JP2002339006A (ja) * | 2001-05-15 | 2002-11-27 | Sumitomo Titanium Corp | チタン粉末及びチタン合金粉末の製造方法 |
Family Cites Families (7)
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US4999051A (en) * | 1989-09-27 | 1991-03-12 | Crucible Materials Corporation | System and method for atomizing a titanium-based material |
JP3839493B2 (ja) * | 1992-11-09 | 2006-11-01 | 日本発条株式会社 | Ti−Al系金属間化合物からなる部材の製造方法 |
US6010661A (en) * | 1999-03-11 | 2000-01-04 | Japan As Represented By Director General Of Agency Of Industrial Science And Technology | Method for producing hydrogen-containing sponge titanium, a hydrogen containing titanium-aluminum-based alloy powder and its method of production, and a titanium-aluminum-based alloy sinter and its method of production |
DE60233983D1 (de) * | 2001-02-16 | 2009-11-19 | Osaka Titanium Technologies Co | Verwendung von gesintertem Presskörper aus Titanpulver |
DE60313294T2 (de) * | 2002-02-15 | 2008-03-06 | Toudai Tlo, Ltd. | Verbundwerkstoff auf magnesiumbasis und herstellungsverfahren dafür |
JP2004087264A (ja) * | 2002-08-26 | 2004-03-18 | Mitsui Mining & Smelting Co Ltd | 非水電解液二次電池用負極材料及びその製造方法 |
JP3819352B2 (ja) * | 2002-10-21 | 2006-09-06 | 三井金属鉱業株式会社 | 電子部品焼成用治具 |
-
2006
- 2006-05-18 JP JP2006138730A patent/JP4947690B2/ja active Active
-
2007
- 2007-03-22 KR KR1020087030871A patent/KR20090018143A/ko not_active Application Discontinuation
- 2007-03-22 US US12/299,854 patent/US20090107294A1/en not_active Abandoned
- 2007-03-22 EP EP07739304A patent/EP2022582A4/en not_active Withdrawn
- 2007-03-22 AU AU2007252758A patent/AU2007252758A1/en not_active Abandoned
- 2007-03-22 WO PCT/JP2007/055861 patent/WO2007135806A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH02263947A (ja) * | 1989-04-03 | 1990-10-26 | Tokushu Denkyoku Kk | 炭火物を分散した高強度鋼の製造方法 |
JPH0593213A (ja) | 1991-06-04 | 1993-04-16 | Sumitomo Shichitsukusu Kk | チタンおよびチタン合金粉末の製造方法 |
JPH0598368A (ja) * | 1991-10-08 | 1993-04-20 | Nkk Corp | 高密度粉末焼結チタン合金の製造方法 |
JPH05239571A (ja) * | 1992-03-02 | 1993-09-17 | Sumitomo Light Metal Ind Ltd | Ti−Al系金属間化合物の製造方法 |
JPH06116609A (ja) | 1992-10-06 | 1994-04-26 | Sumitomo Sitix Corp | 金属粉末の製造方法 |
JP2002241807A (ja) | 2001-02-13 | 2002-08-28 | Sumitomo Titanium Corp | チタン−アルミ系合金粉末の製造方法 |
JP2002339006A (ja) * | 2001-05-15 | 2002-11-27 | Sumitomo Titanium Corp | チタン粉末及びチタン合金粉末の製造方法 |
Non-Patent Citations (1)
Title |
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See also references of EP2022582A4 * |
Also Published As
Publication number | Publication date |
---|---|
KR20090018143A (ko) | 2009-02-19 |
EP2022582A4 (en) | 2010-07-21 |
JP2007308755A (ja) | 2007-11-29 |
US20090107294A1 (en) | 2009-04-30 |
EP2022582A1 (en) | 2009-02-11 |
AU2007252758A1 (en) | 2007-11-29 |
JP4947690B2 (ja) | 2012-06-06 |
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