JP2001342503A - Method for producing porous material - Google Patents
Method for producing porous materialInfo
- Publication number
- JP2001342503A JP2001342503A JP2000164099A JP2000164099A JP2001342503A JP 2001342503 A JP2001342503 A JP 2001342503A JP 2000164099 A JP2000164099 A JP 2000164099A JP 2000164099 A JP2000164099 A JP 2000164099A JP 2001342503 A JP2001342503 A JP 2001342503A
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- Japan
- Prior art keywords
- container
- porous
- hydride
- producing
- powder
- Prior art date
- Legal status (The legal status 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 status listed.)
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- Extrusion Of Metal (AREA)
- Press Drives And Press Lines (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種金属や合金材
料を多孔質化して超軽量金属材料を製造する方法に関す
るものであり、さらに詳しくは、多くの空隙を含むこと
によりその見かけの密度が著しく小さい超軽量金属材料
を製造する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an ultra-light metal material by making various metals and alloy materials porous, and more particularly, to a method for producing an ultra-light metal material by including many voids. The present invention relates to a method for producing extremely small ultra-light metallic materials.
【０００２】[0002]
【従来の技術】超軽量金属材料を製造する従来の方法
は、３つに大別される。その１は、発泡ポリウレタンの
ような多孔質高分子材料を石膏等で型どりし、高分子材
料を焼失すると同時に鋳型を焼成させ、その空隙に溶融
金属を注入・凝固させた後に、鋳型を破砕・除去する鋳
造法と呼ばれる方法である。その２は、微小粒子の集合
体の空隙に、無電解メッキ等の手法で金属を充填した
後、微小粒子を焼失ないし破砕・除去するメッキ法と呼
ばれる方法である。その３は、溶融した金属中に発泡剤
を混合し、生じたガスを多量に含んだ状態で凝固させる
ことで多孔質化する溶湯発泡法と呼ばれる方法である。2. Description of the Related Art Conventional methods for producing ultralight metal materials are roughly classified into three types. The first is to mold a porous polymer material such as foamed polyurethane with gypsum etc., burn out the polymer material and fire the mold at the same time, inject and solidify the molten metal in the voids, and then crush and mold the mold. This is a method called a casting method for removing. No. 2 is a method called a plating method in which the voids of the aggregate of the fine particles are filled with metal by a method such as electroless plating, and then the fine particles are burned out or crushed / removed. The third method is a method called a molten metal foaming method in which a foaming agent is mixed in a molten metal and solidified while containing a large amount of generated gas to make the metal porous.
【０００３】しかし、上記従来の方法に示した鋳造法に
おいては、行程プロセスが複雑であり、特に、鋳型の破
砕・除去が困難なため、生産性が著しく悪く板状の材料
しか作製できないという問題があり、また、メッキ法に
おいては、作製できる金属がニッケル等に限られる上、
生産性が低く、板状の材料しか作製できないという問題
があった。一方、溶湯発泡法では、発泡と凝固に時間の
ずれが生じるため、一様な多孔質体が製造しにくく、ま
た、高空隙率部分が凝固開始部分に偏ったり、凝固終了
部分では多孔性が著しく低下する等、プロセスの制御が
著しく困難であるという欠点があった。However, in the casting method shown in the above-mentioned conventional method, the process is complicated, and in particular, since it is difficult to crush and remove the mold, the productivity is extremely poor and only a plate-like material can be produced. In addition, in the plating method, the metal that can be produced is limited to nickel and the like,
There is a problem that productivity is low and only a plate-shaped material can be manufactured. On the other hand, in the melt foaming method, there is a time lag between foaming and solidification, so that it is difficult to produce a uniform porous body, and a high porosity portion is biased toward a solidification start portion, and porosity is low at a solidification end portion. There is a drawback that the process control is extremely difficult, such as a significant decrease.
【０００４】[0004]
【発明が解決しようとする課題】このような状況の中
で、本発明者らは、上記従来技術に鑑みて、上記従来の
方法における諸問題を解消し得る新しい多孔質体の製造
方法を開発することを目標として鋭意研究を積み重ねた
結果、金属材料と水素化物を金属製容器に封入し、強加
工によりバルク化する工程と、バルク化した材料を水素
化物により多孔質化する工程を組み合わせることにより
所期の目的を達成し得ることを見出し、さらに研究を重
ねて、本発明を完成するに至った。本発明は、各種金属
材料や合金材料を多孔質化して超軽量化する方法を提供
することを目的とする。また、本発明は、各種金属、合
金材料と、水素化物を用いて、多孔質体を製造する方法
を提供することを目的とする。また、本発明は、一様な
空隙率を有する多孔質体を効率よく生産する方法を提供
することを目的とする。さらに、本発明は、材料を超塑
性加工条件下で多孔質化する方法を提供することを目的
とする。Under these circumstances, the present inventors have developed a new method for producing a porous body capable of solving the problems of the conventional method in view of the above prior art. As a result of intensive research with the goal of doing this, combining the process of encapsulating metal materials and hydrides in metal containers and making them bulk by heavy working, and the process of making the bulked materials porous with hydrides As a result, the present inventors have found that the intended purpose can be achieved, and further conducted further research, thereby completing the present invention. An object of the present invention is to provide a method of making various metal materials and alloy materials porous and ultra-lightweight. Another object of the present invention is to provide a method for producing a porous body using various metals and alloy materials and hydrides. Another object of the present invention is to provide a method for efficiently producing a porous body having a uniform porosity. It is a further object of the present invention to provide a method for making a material porous under superplastic working conditions.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
の本発明は、以下の技術的手段から構成される。 （１）材料金属の主成分となる粉末と、室温度において
主成分ないし合金成分の水素化物の粉末を混合し、それ
を塑性変形が可能な金属製容器内に封入し、強加工が可
能な中温度において容器の外から強加工を加えることに
より粉末をバルク化した後、バルク化した材料を容器か
ら取り出し、高温度の超塑性発現加工条件下で水素化物
を分解させ、水素のガス圧による空孔をバルク体内に発
生させてバルク体を多孔質化させるか、若しくは、バル
ク化した材料を容器内に封入したままで昇温させ、上記
高温度でバルク体を多孔質化させてから容器から取り出
すことを特徴とする多孔質体の製造方法。 （２）材料金属の主成分が、マグネシウム、アルミニウ
ム、チタニウム、鉄、ニッケル、銅の内から選択される
いずれか１種である前記（１）記載の多孔質体の製造方
法。 （３）水素化物が、マグネシウム水素化物、チタニウム
水素化物、ニッケル水素化物の内から選択されるいずれ
か１種である前記（１）記載の多孔質体の製造方法。 （４）塑性変形が可能な金属製容器が、ステンレス鋼、
銅、金、銀、白金のいずれか１種からなる前記（１）記
載の多孔質体の製造方法。 （５）塑性変形が可能な金属製容器に加える強加工が、
圧延加工、型鍛造加工、プレス加工、押出し加工のいず
れか１種である前記（１）記載の多孔質体の製造方法。 （６）加圧下でゆっくりと多孔質化する前記（１）記載
の多孔質体の製造方法。The present invention for solving the above-mentioned problems comprises the following technical means. (1) Material The main component of metal powder and the hydride powder of main component or alloy component at room temperature are mixed and sealed in a plastically deformable metal container to enable strong working. After bulking the powder by applying strong processing from outside the container at medium temperature, the bulked material is taken out of the container, hydride is decomposed under high-temperature superplastic expression processing conditions, and the hydrogen gas pressure Voids are generated in the bulk body to make the bulk body porous, or the bulked material is sealed in the container and the temperature is raised, and the bulk body is made porous at the high temperature and then the container is made. A method for producing a porous body. (2) The method for producing a porous body according to (1), wherein the main component of the material metal is any one selected from magnesium, aluminum, titanium, iron, nickel, and copper. (3) The method for producing a porous body according to (1), wherein the hydride is any one selected from magnesium hydride, titanium hydride, and nickel hydride. (4) The metal container capable of plastic deformation is made of stainless steel,
The method for producing a porous body according to the above (1), comprising any one of copper, gold, silver, and platinum. (5) Strong processing to be applied to plastically deformable metal containers
The method for producing a porous body according to (1), wherein the method is any one of rolling, die forging, pressing, and extrusion. (6) The method for producing a porous body according to (1), wherein the porous body is slowly made porous under pressure.
【０００６】[0006]
【発明の実施の形態】次に、本発明についてさらに詳細
に説明する。本発明では、まず、材料金属の主成分とな
る粉末と、室温度において、主成分ないし合金成分の水
素化物を混合し、それを塑性変形が可能な金属製容器内
に封入する。上記工程では、材料金属の主成分となる粉
末に、必要により、合金成分の粉末を適宜配合し、これ
に、室温度において、前記主成分ないし合金成分の水素
化物の粉末を混合する。この場合、材料金属と水素化物
の構成としては、材料金属の主成分と主成分の水素化
物、主成分と合金成分及び主成分の水素化物、主成分と
合金成分及び合金成分の水素化物、主成分と合金成分及
び主成分の水素化物と合金成分の水素化物、の組み合わ
せがあげられる。また、粉末の形態としては、好適に
は、旋盤によって切削粉化したものが例示されるが、こ
れに限らず、これと同等のものであれば同様に使用する
ことができる。Next, the present invention will be described in more detail. In the present invention, first, a powder that is a main component of a material metal and a hydride of a main component or an alloy component are mixed at room temperature, and the mixture is sealed in a plastically deformable metal container. In the above step, the powder of the alloy component is appropriately blended with the powder that is the main component of the material metal, if necessary, and the hydride powder of the main component or the alloy component is mixed with the powder at room temperature. In this case, the constituents of the material metal and the hydride include a hydride of the main component and the main component of the material metal, a hydride of the main component and the alloy component and the main component, a hydride of the main component and the alloy component and the hydride of the main component, The combination of the component and the alloy component, and the hydride of the main component and the hydride of the alloy component are exemplified. Further, as a form of the powder, a powder that is cut and powdered by a lathe is preferably exemplified, but the powder is not limited to this, and any equivalent powder may be used.
【０００７】本発明では、材料金属の主成分として、好
適には、例えば、マグネシウム、アルミニウム、チタニ
ウム、鉄、ニッケル、銅などが例示されるが、その他、
それらの合金、ＡＺ９１やＡＺ３１といったマグネシウ
ム合金、Ａ７０７５やＡ５０５２といったアルミニウム
合金、６ＡＩ−４ＶやＳＰ７００といったチタン合金な
ど、適宜のものを用いることができる。また、主成分な
いし合金の水素化物として、好適には、マグネシウム水
素化物、チタニウム水素化物、ニッケル水素化物などが
例示されるが、その他、ＣａＮｉ5 やＭｇ2 Ｎｉなどの
金属間化合物の水素化物、Ｌａ−Ｎｉ系やチタン−鉄系
といった合金の水素化物など、好適なものを用いること
ができる。In the present invention, as a main component of the material metal, preferably, for example, magnesium, aluminum, titanium, iron, nickel, copper and the like are exemplified.
Appropriate materials such as alloys thereof, magnesium alloys such as AZ91 and AZ31, aluminum alloys such as A7075 and A5052, and titanium alloys such as 6AI-4V and SP700 can be used. Further, as the hydride of the main component or alloy, magnesium hydride, titanium hydride, nickel hydride and the like are preferably exemplified.In addition, hydrides of intermetallic compounds such as CaNi 5 and Mg 2 Ni, A suitable material such as a hydride of an alloy such as La-Ni or titanium-iron can be used.
【０００８】次に、上記材料金属と水素化物からなる粉
末材料を塑性変形が可能な材料金属の成分からなる当該
材料金属成分製の容器内に封入する。この場合、容器材
料の構成としては、粉末材料の主成分金属（純金属）、
粉末材料と主成分を同じとする合金、粉末材料の合金成
分金属（純金属）、粉末材料の合金成分を主成分とする
合金、の組み合わせがあげられる。本発明では、上記粉
末材料を室温度において混合し、それを塑性変形が可能
な金属製容器に封入し、例えば、中温度、すなわち材料
融点を絶対温度で表したものに０．５０〜０．６５を乗
じた温度、好ましくは、自己拡散係数が大きいマグネシ
ウム材料等では０．５０〜０．６０を乗じた温度、自己
拡散係数が小さいニッケル材料等では０．５５〜０．６
５を乗じた温度において、加熱装置にて、容器の外から
強加工を加えて、粉末材料をバルク化する。この場合、
金属製容器として、好適には、ステンレス鋼、銅、金、
銀、白金からなるものが例示されるが、これらと同効の
材料からなるものであれば同様に使用することができ
る。また、上記強加工として、好適には、例えば、圧延
加工、型鍛造加工、プレス加工、押出し加工などがあげ
られるが、これらに制限されない。上記中温度は、材料
金属、合金により上述のように異なるので、適宜調整す
ればよい。Next, the powder material comprising the material metal and the hydride is sealed in a container made of the material metal component capable of plastic deformation. In this case, as the composition of the container material, the main component metal (pure metal) of the powder material,
Examples include a combination of an alloy whose main component is the same as the powder material, an alloy component metal (pure metal) of the powder material, and an alloy whose main component is an alloy component of the powder material. In the present invention, the above-mentioned powder material is mixed at room temperature and sealed in a plastically deformable metal container, for example, at a medium temperature, that is, when the material melting point is expressed as an absolute temperature of 0.50-0. 65, preferably a temperature multiplied by 0.50 to 0.60 for a magnesium material or the like having a large self-diffusion coefficient, or 0.55 to 0.6 for a nickel material or the like having a small self-diffusion coefficient.
At a temperature multiplied by 5, the powdered material is bulked by applying a strong working from outside the container with a heating device. in this case,
As a metal container, preferably, stainless steel, copper, gold,
A material made of silver or platinum is exemplified, but any material made of a material having the same effect can be used. Further, as the above-mentioned strong working, preferably, for example, rolling, die forging, press working, extrusion working, etc. are mentioned, but not limited thereto. The medium temperature varies depending on the material metals and alloys as described above, and may be appropriately adjusted.
【０００９】次に、上記バルク化した材料を、容器から
取り出し、加熱装置にて、高温度、すなわち材料融点を
絶対温度で表したものに０．７０〜０．８５を乗じた温
度、好ましくは、自己拡散係数が大きいマグネシウム材
料等では０．７０〜０．８０を乗じた超塑性加工温度、
自己拡散係数が小さいニッケル材料等では０．７５〜
０．８５を乗じた超塑性加工温度において、上記水素化
合物を超塑性加工温度において、上記水素化物を分解
し、発生した水素のガス圧による空隙をバルク体内に形
成し、多孔質化させるか、あるいはバルク化した材料を
容器内に封入したまま昇温させ、所定の温度でバルク体
を多孔質化させてから容器から取り出すことにより多孔
質体を製造する。この場合、好適には、バルク化した材
料を加圧下でゆっくりと多孔質化することにより、急激
な膨張で材料に不要の変形が生じるのを防ぐことができ
る。上記加熱装置は、上記処理を実施し得るものであれ
ばよく、特に制限されない。Next, the bulked material is taken out of the container and heated at a high temperature, that is, a temperature obtained by multiplying the melting point of the material by the absolute temperature by 0.70 to 0.85, preferably, For a magnesium material having a large self-diffusion coefficient, a superplastic working temperature multiplied by 0.70 to 0.80,
For nickel materials with a low self-diffusion coefficient, 0.75
At the superplastic working temperature multiplied by 0.85, the hydride is decomposed at the superplastic working temperature to form a void in the bulk body by the gas pressure of the generated hydrogen, Alternatively, the temperature is raised while the bulked material is sealed in the container, the bulk is made porous at a predetermined temperature, and then the bulk is taken out of the container to manufacture the porous body. In this case, preferably, by making the bulk material slowly porous under pressure, unnecessary deformation of the material due to rapid expansion can be prevented. The heating device is not particularly limited as long as it can perform the above treatment.
【００１０】本発明は、従来の方法が有する欠点を克服
し、生産性が高く、かつ一様な空隙率を有する多孔質体
を製造する方法として、固体内でガスを発生させ、この
ガスによって材料多孔質化させることを特徴としてい
る。この方法を実現するためには、材料自体を十分な被
加工性条件下、すなわち、超塑性加工条件下におくこと
が必須である。[0010] The present invention overcomes the drawbacks of the conventional methods, and as a method for producing a porous body having high productivity and uniform porosity, gas is generated in a solid, and the gas is generated by the gas. It is characterized by making the material porous. In order to realize this method, it is essential that the material itself be placed under conditions of sufficient workability, that is, under conditions of superplastic working.
【００１１】本発明の方法は、上述のように、各種金属
や合金に適用でき、超軽量金属材料を得ることができ
る。もちろん、その際に、粉末をバルク化する温度（中
温度）と水素化物を分解し、水素発泡させる超塑性加工
温度（高温度）は、それぞれの金属や合金において上述
のように異なるので、適宜調整すればよい。[0011] As described above, the method of the present invention can be applied to various metals and alloys, and an ultra-light metal material can be obtained. Of course, at that time, the temperature at which the powder is made into a bulk (medium temperature) and the superplastic working temperature at which the hydride is decomposed and hydrogen foamed (high temperature) are different for each metal or alloy as described above. Adjust it.
【００１２】ここで、一例としてマグネシウム材料につ
いて具体的に説明する。例えば、旋盤による切り子のよ
うな、自然発火しない程度の形状のマグネシウム粉末
に、約５％程度のマグネシウム水素化物粉末を室温で十
分に攪拌・混合し、これを十分に焼鈍した円筒状の銅製
容器に封入する。その後、中温度の２００〜３００℃に
おいて、容器の外から強加工を加えて、加工率５０〜１
００対１程度の押出し加工により、粉末をバルク化す
る。この強加工に伴う再結晶により、生成する材料組織
は超塑性が発現できるほどに十分に小さな結晶粒径を有
するようになる。その後、バルク体を容器から取り出
し、高温度の超塑性発現加工条件下で、すなわち、材料
組織が高速超塑性を十分発現できる高温度の約４００℃
において、水素化物を分解させ、生じるガス圧により、
材料を多孔質化する。このプロセスを図１に模式的に示
す。Here, a magnesium material will be specifically described as an example. For example, about 5% of magnesium hydride powder is sufficiently stirred and mixed at room temperature with magnesium powder having a shape that does not spontaneously ignite, such as a cutting piece by a lathe, and then is sufficiently annealed in a cylindrical copper container. To be sealed. After that, at 200 to 300 ° C. of medium temperature, strong processing was applied from outside the container to obtain a processing rate of 50 to 1
The powder is bulked by an extrusion process of about 00: 1. Due to the recrystallization accompanying the strong working, the resulting material structure has a sufficiently small crystal grain size so that superplasticity can be exhibited. Thereafter, the bulk body is taken out of the container, and under high-temperature superplastic expression processing conditions, that is, at a high temperature of about 400 ° C. at which the material structure can sufficiently express high-speed superplasticity.
In, the hydride is decomposed and the resulting gas pressure causes
The material is made porous. This process is shown schematically in FIG.
【００１３】本発明のプロセスの多孔質化段階において
は、特に、目的製造材料の厚さが大きい場合などには、
バルク化した材料を容器内に封入したままで昇温させ、
所定の温度に至ってから容器を破り、ガスの放出を図る
方が多孔質化に効果的な場合もある。この場合のプロセ
スを図２に模式的に示す。In the porous stage of the process of the present invention, particularly when the thickness of the target material is large,
The temperature is raised while the bulked material remains sealed in the container,
In some cases, it is effective to break the container after reaching a predetermined temperature to release the gas and to make the container porous. The process in this case is schematically shown in FIG.
【００１４】また、バルク化した材料を多孔質化する際
に、急激な膨張で材料に不要の変形をもたらさないよう
にするために、バルク化した材料を加圧下でゆっくりと
多孔質化する方が効果的な場合もある。この場合のプロ
セスを図３に模式的に示す。In addition, when the bulk material is made porous, the bulk material is slowly made porous under pressure in order to prevent the material from being unnecessarily deformed by rapid expansion. May be effective. The process in this case is schematically shown in FIG.
【００１５】なお、粉末を金属製容器に封入するのは、
バルク化操作のために昇温した間に、水素が逃げること
を防止して、発泡過程で十分な水素がバルク体内に残留
させることを目的とするものである。It is to be noted that the powder is sealed in a metal container by:
An object of the present invention is to prevent hydrogen from escaping while the temperature is raised for a bulking operation, and to allow sufficient hydrogen to remain in the bulk during the foaming process.
【００１６】[0016]
【作用】本発明では、特に、容器内に封入した材料を、
強加工が可能な中温度において容器の外から強加工を加
えることによりバルク化すること、次に、バルク化した
材料を容器から取り出し、高温度の超塑性発現加工条件
下で水素化物を分解し、水素のガス圧による空隙をバル
ク体内に形成し、多孔質化するか、若しくは、バルク化
した材料を容器内に封入したままで昇温させ、上記高温
度でバルク体を多孔質化させて容器から取り出すこと、
が重要である。これらにより、空隙率が約５０％の一様
の空隙分布を有する多孔体を製造することができる。ま
た、バルク化した材料を加圧下でゆっくりと多孔質化す
ることにより、材料に不要の変形が生じるのを防ぐこと
ができる。粉末を金属製容器に封入してバルク化するの
で、水素が封入され、発泡過程で十分な水素をバルク体
内に残留させた多孔体が得られる。In the present invention, in particular, the material sealed in the container is
Bulk by applying strong working from outside the container at medium temperature where strong working is possible, then take out the bulked material from the container and decompose hydride under high temperature superplastic expression processing conditions By forming voids in the bulk body by the gas pressure of hydrogen and making the body porous, or raising the temperature while the bulked material is sealed in the container, making the bulk body porous at the above high temperature Removing from container,
is important. Thus, a porous body having a uniform void distribution with a void ratio of about 50% can be manufactured. In addition, by making the bulk material slowly porous under pressure, unnecessary deformation of the material can be prevented. Since the powder is sealed in a metal container to form a bulk, hydrogen is sealed, and a porous body in which sufficient hydrogen remains in the bulk during the foaming process is obtained.
【００１７】[0017]
【実施例】次に、実施例に基づいて本発明を具体的に説
明する。 実施例１ 鋳造用マグネシウム合金であるＡＺ９１Ｄを旋盤によっ
て切削粉化したものを用い、これにマグネシウム水素化
物の粉末を重量比で５％混合し、ボールミルにて十分に
攪拌した。その後、この粉末をよく焼鈍した銅製円筒状
容器（板厚０．５ｍｍ、直径４０ｍｍ）に減圧封入し
た。これを２００℃の中温域で後方押し出しにより外径
７ｍｍの棒状とし、その後、４００℃の高温域へ加熱し
たところ、直径約１０ｍｍの棒状多孔質体が得られた。Next, the present invention will be specifically described based on examples. Example 1 A magnesium alloy for casting, AZ91D, obtained by cutting and pulverizing with a lathe was used, and 5% by weight of a powder of magnesium hydride was mixed with the mixture and thoroughly stirred by a ball mill. Thereafter, this powder was sealed under reduced pressure in a well-annealed copper cylindrical container (plate thickness 0.5 mm, diameter 40 mm). This was extruded backward at a middle temperature range of 200 ° C. to form a rod having an outer diameter of 7 mm, and then heated to a high temperature range of 400 ° C., whereby a rod-shaped porous body having a diameter of about 10 mm was obtained.
【００１８】[0018]
【発明の効果】本発明により、１）空隙率が約５０％の
多孔質体を容易に作製することができる、２）材料内で
の空隙率分布が一様となった超軽量金属材料を得ること
ができる、３）こうした材料は、エネルギー吸収性に優
れ、振動の抑制や大きな衝撃エネルギーの吸収を行うこ
とができる、また、４）こうした構造の材料は、その純
度が低くても高機能が発現できるため、今後増大するリ
サイクルに伴って発生する低純度材料の活用が図れるも
のである、という効果が奏される。According to the present invention, 1) a porous body having a porosity of about 50% can be easily produced, and 2) an ultralight metal material having a uniform porosity distribution in the material. 3) These materials have excellent energy absorption and can suppress vibration and absorb large impact energy. 4) Materials with such a structure have high performance even if their purity is low. , The effect is that low-purity materials generated with recycling that will increase in the future can be utilized.
【図１】本発明のプロセスを模式的に示す説明図であ
る。FIG. 1 is an explanatory view schematically showing a process of the present invention.
【図２】製造材料が厚い場合における本発明の他のプロ
セスを模式的に示す説明図である。FIG. 2 is an explanatory view schematically showing another process of the present invention when a manufacturing material is thick.
【図３】多孔質化をゆっくりと行う本発明の他のプロセ
スを模式的に示す説明図である。FIG. 3 is an explanatory view schematically showing another process of the present invention for slowly forming a porous body.
フロントページの続き Ｆターム(参考） 4E002 AD12 4E029 JA04 4E090 AA01 AB01 DA01 HA06 4K018 AA03 AA06 AA07 AA13 AA24 AB10 AC01 CA32 CA37 DA13 EA28 EA34 EA42 KA22 Continued on the front page F term (reference) 4E002 AD12 4E029 JA04 4E090 AA01 AB01 DA01 HA06 4K018 AA03 AA06 AA07 AA13 AA24 AB10 AC01 CA32 CA37 DA13 EA28 EA34 EA42 KA22
Claims (6)
において主成分ないし合金成分の水素化物の粉末を混合
し、それを塑性変形が可能な金属製容器内に封入し、強
加工が可能な中温度において容器の外から強加工を加え
ることにより粉末をバルク化した後、バルク化した材料
を容器から取り出し、高温度の超塑性発現加工条件下で
水素化物を分解させ、水素のガス圧による空孔をバルク
体内に発生させてバルク体を多孔質化させるか、若しく
は、バルク化した材料を容器内に封入したままで昇温さ
せ、上記高温度でバルク体を多孔質化させてから容器か
ら取り出すことを特徴とする多孔質体の製造方法。1. A powder which is a main component of a material metal and a hydride powder of a main component or an alloy component are mixed at room temperature, and the mixture is sealed in a plastically deformable metal container. After bulking the powder by applying strong working from the outside of the container at the possible medium temperature, the bulked material is taken out of the container, hydride is decomposed under high-temperature superplastic expression processing conditions, hydrogen gas Either the pores are generated in the bulk body by pressure to make the bulk body porous, or the bulked material is heated while keeping the bulked material sealed in the container, and the bulk body is made porous at the high temperature. A method for producing a porous body, comprising taking out of a container from a container.
ルミニウム、チタニウム、鉄、ニッケル、銅の内から選
択されるいずれか１種である請求項１記載の多孔質体の
製造方法。2. The method for producing a porous body according to claim 1, wherein the main component of the material metal is any one selected from magnesium, aluminum, titanium, iron, nickel, and copper.
タニウム水素化物、ニッケル水素化物の内から選択され
るいずれか１種である請求項１記載の多孔質体の製造方
法。3. The method for producing a porous body according to claim 1, wherein the hydride is any one selected from magnesium hydride, titanium hydride, and nickel hydride.
レス鋼、銅、金、銀、白金のいずれか１種からなる請求
項１記載の多孔質体の製造方法。4. The method for producing a porous body according to claim 1, wherein the metal container capable of plastic deformation is made of any one of stainless steel, copper, gold, silver, and platinum.
加工が、圧延加工、型鍛造加工、プレス加工、押出し加
工のいずれか１種である請求項１記載の多孔質体の製造
方法。5. The method for producing a porous body according to claim 1, wherein the strong working applied to the metal container capable of plastic deformation is any one of rolling, die forging, pressing, and extrusion.
１記載の多孔質体の製造方法。6. The method for producing a porous body according to claim 1, wherein the porous body is slowly made porous under pressure.
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|---|---|---|---|
| JP2000164099A JP3472805B2 (en) | 2000-06-01 | 2000-06-01 | Method for producing porous body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000164099A JP3472805B2 (en) | 2000-06-01 | 2000-06-01 | Method for producing porous body |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230128A (en) * | 2020-03-11 | 2020-06-05 | 昆明理工大学 | Based on TiH2Method for preparing porous titanium and titanium alloy by adding CaO |
| CN111850327A (en) * | 2020-07-13 | 2020-10-30 | 华中科技大学 | Preparation method of porous NiTi alloy based on selective dissolution and product |
| CN114147067A (en) * | 2021-12-17 | 2022-03-08 | 东北大学 | Method for preparing foam metal sandwich board by combined casting and rolling |
-
2000
- 2000-06-01 JP JP2000164099A patent/JP3472805B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230128A (en) * | 2020-03-11 | 2020-06-05 | 昆明理工大学 | Based on TiH2Method for preparing porous titanium and titanium alloy by adding CaO |
| CN111230128B (en) * | 2020-03-11 | 2022-12-20 | 昆明理工大学 | Based on TiH 2 Method for preparing porous titanium and titanium alloy by adding CaO |
| CN111850327A (en) * | 2020-07-13 | 2020-10-30 | 华中科技大学 | Preparation method of porous NiTi alloy based on selective dissolution and product |
| CN111850327B (en) * | 2020-07-13 | 2021-05-07 | 华中科技大学 | Preparation method of porous NiTi alloy based on selective dissolution and product |
| CN114147067A (en) * | 2021-12-17 | 2022-03-08 | 东北大学 | Method for preparing foam metal sandwich board by combined casting and rolling |
| CN114147067B (en) * | 2021-12-17 | 2022-09-09 | 东北大学 | Method for preparing foam metal sandwich board by combined casting and rolling |
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| Publication number | Publication date |
|---|---|
| JP3472805B2 (en) | 2003-12-02 |
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