JPH07268597A - Production of amorphous alloy coated member - Google Patents
Production of amorphous alloy coated memberInfo
- Publication number
- JPH07268597A JPH07268597A JP6131594A JP6131594A JPH07268597A JP H07268597 A JPH07268597 A JP H07268597A JP 6131594 A JP6131594 A JP 6131594A JP 6131594 A JP6131594 A JP 6131594A JP H07268597 A JPH07268597 A JP H07268597A
- Authority
- JP
- Japan
- Prior art keywords
- amorphous alloy
- mold
- core material
- molten metal
- coated member
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はその表面の一部又は全部
が非晶質金属（アモルファス金属）に被覆された非晶質
合金被覆部材の製造方法に関し、金型内にコア材を配置
した後、前記金型内に非晶質合金組成の溶湯を注入して
非晶質合金被覆層を形成することにより、非晶質合金被
覆部材の生産性を向上させたものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an amorphous alloy-coated member having a part or all of its surface coated with an amorphous metal (amorphous metal), in which a core material is arranged in a mold. Thereafter, a molten metal having an amorphous alloy composition is injected into the mold to form an amorphous alloy coating layer, thereby improving the productivity of the amorphous alloy coating member.
【０００２】[0002]
【従来の技術】従来、丸棒又は板状の非晶質単相バルク
材は、金型鋳造法又はダイカスト鋳造法により製造され
ている。この場合に、溶湯を除冷すると結晶質相になっ
てしまうため、溶湯を急冷凝固させることが必要であ
る。このため、非晶質単相バルク材の大きさは、溶湯を
急冷凝固させることが可能なサイズに制限される。非晶
質単相バルク材が得られる最大のサイズを臨界寸法とい
う。この臨界寸法は非晶質合金組成により異なる。下記
表１に、代表的な非晶質合金組成の臨界寸法を示す。但
し、表中の各元素の含有率は原子％である。2. Description of the Related Art Conventionally, a round bar or plate-like amorphous single-phase bulk material has been manufactured by a die casting method or a die casting method. In this case, when the molten metal is cooled, it becomes a crystalline phase, so it is necessary to rapidly solidify the molten metal. Therefore, the size of the amorphous single-phase bulk material is limited to a size that allows the molten metal to be rapidly cooled and solidified. The maximum size at which an amorphous single-phase bulk material can be obtained is called the critical dimension. This critical dimension depends on the amorphous alloy composition. Table 1 below shows the critical dimensions of typical amorphous alloy compositions. However, the content of each element in the table is atomic%.
【０００３】[0003]
【表１】 [Table 1]
【０００４】この表１から明らかなように、臨界寸法は
極めて小さい。このため、非晶質合金部材の各種分野へ
の適用が制限されている。As is clear from Table 1, the critical dimension is extremely small. Therefore, the application of the amorphous alloy member to various fields is limited.
【０００５】ところで、部材の表面のみを非晶質相とし
た非晶質合金被覆部材が開発されている。これらの部材
は任意の大きさに形成することができると共に、非晶質
合金の長所を有している。By the way, an amorphous alloy coated member in which only the surface of the member is in an amorphous phase has been developed. These members can be formed in any size and have the advantages of an amorphous alloy.
【０００６】従来、非晶質合金被覆部材の製造方法とし
ては、スパッタ法及び蒸着法等の薄膜形成法を使用し
て、部材の表面にアモルファス相を形成する方法があ
る。また、レーザー等を用いて、部材の表面の一部を融
解し、この融解した部分を急冷凝固させることによりア
モルファス化する方法もある。Conventionally, as a method for manufacturing an amorphous alloy coated member, there is a method of forming an amorphous phase on the surface of the member by using a thin film forming method such as a sputtering method and a vapor deposition method. There is also a method in which a part of the surface of the member is melted using a laser or the like, and the melted part is rapidly cooled and solidified to be made amorphous.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上述し
た従来の非晶質合金被覆部材の製造方法においては、い
ずれも非晶質合金被覆層の形成に時間がかかる等の欠点
があり、生産性が悪いため、製造コストが高いという問
題点がある。However, all of the above-mentioned conventional methods for manufacturing an amorphous alloy coating member have drawbacks such as the time required for forming the amorphous alloy coating layer, and thus the productivity is low. Since it is bad, there is a problem that the manufacturing cost is high.
【０００８】本発明はかかる問題点に鑑みてなされたも
のであって、生産性が優れ、非晶質合金被覆部材の製造
コストを低減できる非晶質合金被覆部材の製造方法を提
供することを目的とする。The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for producing an amorphous alloy-coated member which has excellent productivity and can reduce the production cost of the amorphous alloy-coated member. To aim.
【０００９】[0009]
【課題を解決するための手段】本発明に係る非晶質合金
被覆部材の製造方法は、金型内にコア材を配置する工程
と、前記金型内に非晶質合金組成の溶湯を注入して前記
コア材の少なくとも一部を被覆する非晶質合金被覆層を
形成する工程とを有することを特徴とする。A method of manufacturing an amorphous alloy coated member according to the present invention comprises a step of disposing a core material in a mold and a step of injecting a molten metal having an amorphous alloy composition into the mold. And forming an amorphous alloy coating layer that covers at least a part of the core material.
【００１０】[0010]
【作用】本発明においては、金型内にコア材を配置した
後、前記金型内に非晶質合金組成の溶湯を注入する。そ
うすると、溶湯は金型の壁面で冷却されて急冷凝固し、
コア材の少なくとも一部を被覆する被覆層が形成され
る。この場合に、この被覆層の金型と接触する表面は金
型により急冷されているので、少なくともその表面の一
部が非晶質相となる。In the present invention, the core material is placed in the mold, and then the melt of the amorphous alloy composition is injected into the mold. Then, the molten metal is cooled by the wall surface of the mold and rapidly solidified,
A coating layer that covers at least a portion of the core material is formed. In this case, since the surface of the coating layer in contact with the mold is rapidly cooled by the mold, at least a part of the surface becomes an amorphous phase.
【００１１】この場合に、金型の内壁面とコア材との間
隔は０．１乃至５０ｍｍであることが好ましい。一般的
に、非晶質合金組成の溶湯は流動性が悪いため、金型と
コア材との間隔が０．１ｍｍ未満であると、金型内壁面
とコア材との間に溶湯が侵入しにくくなる。また、金型
内壁面とコア材との間隔が５０ｍｍを超えると、溶湯の
急冷凝固が困難になり、非晶質相を得ることが難しくな
る。このため、金型の内壁面とコア材との間隔は０．１
乃至５０ｍｍであることが好ましい。In this case, the distance between the inner wall surface of the mold and the core material is preferably 0.1 to 50 mm. Generally, since the melt having an amorphous alloy composition has poor fluidity, if the distance between the mold and the core material is less than 0.1 mm, the melt penetrates between the inner wall surface of the mold and the core material. It gets harder. Further, when the distance between the inner wall surface of the mold and the core material exceeds 50 mm, rapid solidification of the molten metal becomes difficult and it becomes difficult to obtain an amorphous phase. Therefore, the space between the inner wall surface of the mold and the core material is 0.1.
It is preferably from 50 mm to 50 mm.
【００１２】このように、本発明においては、鋳造法を
利用して非晶質合金被覆部材を製造するので、生産性が
優れており、非晶質合金被覆部材の製造コストを低減で
きる。As described above, in the present invention, since the amorphous alloy coated member is manufactured by using the casting method, the productivity is excellent and the manufacturing cost of the amorphous alloy coated member can be reduced.
【００１３】なお、コア材を金型内に配置する前に、前
記コア材を室温以上の温度に予備加熱しておくと、コア
材との接触による溶湯の温度低下を抑制できる。また、
コア材を予備加熱しておくことにより、溶湯との接触に
よるコア材表面の融解が促進され、被覆層とコア材との
密着性が向上するという利点もある。このため、コア材
を金型内に配置する前に、前記コア材を予備加熱してお
くことが好ましい。If the core material is preheated to a temperature of room temperature or higher before the core material is placed in the mold, the temperature drop of the molten metal due to contact with the core material can be suppressed. Also,
By preheating the core material, there is also an advantage that the melting of the surface of the core material due to the contact with the molten metal is promoted and the adhesion between the coating layer and the core material is improved. Therefore, it is preferable to preheat the core material before placing the core material in the mold.
【００１４】[0014]
【実施例】次に、本発明の実施例について、添付の図面
を参照して説明する。Embodiments of the present invention will now be described with reference to the accompanying drawings.
【００１５】図１（ａ），（ｂ）は本発明の第１の実施
例に係る非晶質合金被覆部材の製造方法を工程順に示す
模式図である。本実施例においては、鋳造装置を使用し
て非晶質合金被覆部材を製造する。この鋳造装置は、固
定金型１及び可動金型２を備えており、これらの金型
１，２により所定の形状のキャビティ７（空間）が形成
されるようになっている。このキャビティ７は、湯口９
を介して溶湯保持部８に連結される。この溶湯保持部８
の下部側には下部プランジャ５が上下方向に移動可能に
配設されており、この下部プランジャ５の上面が溶湯保
持部８の底部となっている。また、溶湯保持部８の上部
側には上部プランジャ（加圧プランジャ）６が上下方向
に移動可能に配設されている。溶湯保持部８には、その
内側に挿入された溶湯４を所定の温度に保持するための
溶湯温度保持手段が設けられている。1 (a) and 1 (b) are schematic diagrams showing, in the order of steps, a method for manufacturing an amorphous alloy coated member according to the first embodiment of the present invention. In this embodiment, a casting apparatus is used to manufacture an amorphous alloy coated member. This casting apparatus includes a fixed mold 1 and a movable mold 2, and the molds 1 and 2 form a cavity 7 (space) having a predetermined shape. This cavity 7 has a sprue 9
It is connected to the molten metal holding portion 8 via. This molten metal holder 8
On the lower side of the lower plunger 5, a lower plunger 5 is arranged so as to be movable in the vertical direction, and the upper surface of the lower plunger 5 serves as the bottom of the molten metal holding portion 8. An upper plunger (pressurizing plunger) 6 is arranged on the upper side of the molten metal holding portion 8 so as to be vertically movable. The molten metal holding portion 8 is provided with a molten metal temperature holding means for holding the molten metal 4 inserted therein at a predetermined temperature.
【００１６】本実施例においては、先ず、図１（ａ）に
示すように、キャビティ内にコア材３を配置する。この
場合に、コア材３と金型１，２の内壁面との間隔は０．
１乃至５０ｍｍとする。In this embodiment, first, as shown in FIG. 1A, the core material 3 is placed in the cavity. In this case, the distance between the core material 3 and the inner wall surfaces of the molds 1 and 2 is 0.
It is set to 1 to 50 mm.
【００１７】次いで、溶湯保持部８に非晶質合金組成の
溶湯４を装入し、この溶湯を所定の温度にする。その
後、図１（ｂ）に示すように、上部プランジャ６により
溶湯４を例えば７０ｋｇｆ／ｃｍ2 の圧力に加圧して、
この溶湯４をキャビティ７内に注入する。このとき、上
部プランジャ６の移動速度は、例えば１．４ｍ／秒とす
る。キャビティ７内に注入された溶湯４は、金型１，２
の内壁面とコア材３との間に侵入し、金型１，２により
急冷されて凝固し、コア材３を被覆する被覆層が得られ
る。この被覆層は、金型により急冷されているので、少
なくともその表面の一部が非晶質相となる。このように
して、非晶質合金被覆部材を得ることができる。Next, the molten metal holding portion 8 is charged with the molten metal 4 having an amorphous alloy composition, and the molten metal is brought to a predetermined temperature. Thereafter, as shown in FIG. 1B, the molten metal 4 is pressurized by the upper plunger 6 to a pressure of, for example, 70 kgf / cm 2 ,
This molten metal 4 is poured into the cavity 7. At this time, the moving speed of the upper plunger 6 is, for example, 1.4 m / sec. The molten metal 4 injected into the cavity 7 is
Enters between the inner wall surface of the core material 3 and the core material 3 and is rapidly cooled by the molds 1 and 2 to be solidified to obtain a coating layer for covering the core material 3. Since this coating layer is rapidly cooled by the mold, at least a part of its surface becomes an amorphous phase. In this way, the amorphous alloy coated member can be obtained.
【００１８】本実施例においては、上述の如く、鋳造装
置を使用して非晶質合金被覆部材を製造するので、非晶
質合金被覆部材の製造が容易であり、生産性が優れてい
る。従って、非晶質合金被覆部材の製造コストを低減す
ることができる。また、本実施例においては、コア材及
び被覆層の材質を適宜選択することにより、優れた特性
を有する複合材を製造することができる。例えば、ジュ
ラルミン製部材の表面をＡｌ基アモルファス合金層で被
覆することにより、強度が高く、耐食性が優れた複合材
を得ることができる。また、Ｍｇ基合金製部材の表面を
Ａｌ基アモルファス層で被覆することにより、軽量であ
ると共に、耐食性が優れた複合材を得ることができる。In this embodiment, as described above, since the amorphous alloy coated member is manufactured using the casting apparatus, the amorphous alloy coated member is easy to manufacture and the productivity is excellent. Therefore, the manufacturing cost of the amorphous alloy coated member can be reduced. In addition, in this example, a composite material having excellent properties can be manufactured by appropriately selecting the materials of the core material and the coating layer. For example, by coating the surface of the duralumin member with an Al-based amorphous alloy layer, a composite material having high strength and excellent corrosion resistance can be obtained. Further, by covering the surface of the Mg-based alloy member with the Al-based amorphous layer, it is possible to obtain a composite material that is lightweight and has excellent corrosion resistance.
【００１９】ところで、本実施例においては、下記に示
すように各種条件を設定する。By the way, in this embodiment, various conditions are set as shown below.
【００２０】非晶質合金組成 非晶質合金組成としては、鋳造法により０．１ｍｍ以上
の寸法のバルク材を製造した場合に、非晶質相の体積分
率が５０％以上となるものであることが好ましい。具体
的には、例えば前記表１に示す合金組成のものがある。 Amorphous alloy composition As an amorphous alloy composition, when a bulk material having a size of 0.1 mm or more is manufactured by a casting method, the volume fraction of the amorphous phase is 50% or more. Preferably there is. Specifically, for example, there are alloy compositions shown in Table 1 above.
【００２１】鋳造圧力 溶湯を金型内に注入するときの鋳造圧力は、通常、１０
ｋｇｆ／ｃｍ2 以上にする。一般的に、非晶質合金組成
の溶湯は、通常の鋳造用合金に比して流動性が劣るた
め、鋳造圧力が高いことが必要である。また、圧力が高
いほど溶湯から金型への熱伝導率が向上するため、溶湯
を急冷することができる。従って、溶湯をキャビティ内
に注入するときには、溶湯に１０ｋｇｆ／ｃｍ2 以上の
圧力を印加することが好ましい。但し、圧力が高すぎる
と金型の消耗が速くなるため、鋳造圧力を過剰に高くす
ることは好ましくない。 Casting pressure When the molten metal is poured into the mold, the casting pressure is usually 10
It should be at least kgf / cm 2 . In general, a molten metal having an amorphous alloy composition is inferior in fluidity to a normal casting alloy, and therefore needs to have a high casting pressure. Further, the higher the pressure, the higher the thermal conductivity from the molten metal to the mold, so that the molten metal can be rapidly cooled. Therefore, when pouring the molten metal into the cavity, it is preferable to apply a pressure of 10 kgf / cm 2 or more to the molten metal. However, if the pressure is too high, the wear of the mold is accelerated, so it is not preferable to raise the casting pressure excessively.
【００２２】鋳込み速度 溶湯は、凝固が始まる前にキャビティ内に注入され金型
との接触により急冷されて凝固することが必要である。
鋳込み速度が遅くキャビティに注入される前に溶湯の凝
固が始まると、非晶質相を得ることが極めて困難にな
る。従って、鋳込み速度はある程度速いことが必要であ
る。しかし、鋳込み速度が速すぎると、ガスの巻き込み
等の欠陥が多くなる。The casting speed molten metal is required to be poured into the cavity before being solidified and rapidly cooled by contact with the mold to be solidified.
If the casting speed is slow and solidification of the molten metal begins before it is poured into the cavity, it becomes extremely difficult to obtain an amorphous phase. Therefore, it is necessary that the casting speed be high to some extent. However, if the casting speed is too fast, defects such as gas entrainment increase.
【００２３】金型温度 金型温度は、非晶質合金の結晶化温度（以下、Ｔｘとい
う）又はガラス遷移温度（以下、Ｔｇという）のいずれ
か低い温度以下の温度に設定する。通常のダイカスト法
では、溶湯の流動性を維持するために、金型温度は２０
０〜３００℃に設定する。非晶質合金の場合は、溶湯の
温度が融点以下になると過冷が起こり、徐々に粘性が増
し、Ｔｇ以下の温度になると過冷却液体の構造のまま固
体になる。この状態がアモルファスである。非晶質相を
得るためには、溶湯をＴｇ以下の温度に急激に冷却する
ことが必要である。従って、金型温度は、溶湯の熱のた
めに一時的に上がってしまう場合を除き、Ｔｇ以下の温
度にすることが必要である。 Mold temperature The mold temperature is set to a temperature not higher than the crystallization temperature of the amorphous alloy (hereinafter referred to as Tx) or the glass transition temperature (hereinafter referred to as Tg), whichever is lower. In the usual die casting method, the mold temperature is 20 to maintain the fluidity of the molten metal.
Set to 0-300 ° C. In the case of an amorphous alloy, supercooling occurs when the temperature of the molten metal becomes equal to or lower than the melting point, the viscosity gradually increases, and when the temperature becomes equal to or lower than Tg, the structure of the supercooled liquid becomes a solid. This state is amorphous. To obtain the amorphous phase, it is necessary to rapidly cool the molten metal to a temperature below Tg. Therefore, it is necessary to set the mold temperature to a temperature not higher than Tg, except when the temperature of the mold rises temporarily due to the heat of the molten metal.
【００２４】但し、非晶質合金には、Ｔｇ＜Ｔｘのもの
と、Ｔｘ＜Ｔｇのものがある。前者の場合は、上述の如
く金型温度をＴｇ以下にすればよいが、後者の場合は、
金型温度がＴｇ以下であってもＴｘ以上の温度であれば
溶湯は結晶化してしまうので、金型温度はＴｘ以下であ
ることが必要である。However, amorphous alloys include those having Tg <Tx and those having Tx <Tg. In the former case, the mold temperature may be set to Tg or lower as described above, but in the latter case,
Even if the mold temperature is Tg or lower, if the temperature is Tx or higher, the molten metal will be crystallized. Therefore, the mold temperature needs to be Tx or lower.
【００２５】溶湯温度 コア材の表面近傍での溶湯温度を、凝固開始温度（以
下、Ｔｍという）以上、Ｔｍ＋３００（Ｋ）以下とす
る。コア材の表面近傍での溶湯温度がＴｍ未満の場合
は、結晶核が生成されて凝固が始まってしまう。また、
コア材の表面近傍での溶湯温度がＴｍ＋３００（Ｋ）を
超えると、余分な熱量が多すぎて溶湯を急冷することが
できない。Molten Metal Temperature The molten metal temperature in the vicinity of the surface of the core material is set to be not lower than the solidification start temperature (hereinafter referred to as Tm) and not higher than Tm + 300 (K). If the melt temperature near the surface of the core material is lower than Tm, crystal nuclei are generated and solidification begins. Also,
When the temperature of the molten metal near the surface of the core material exceeds Tm + 300 (K), the amount of excess heat is too large to rapidly cool the molten metal.
【００２６】上述した各種条件のうち、溶湯温度、鋳造
圧力及び鋳込み速度は特に重要である。Of the various conditions described above, the melt temperature, casting pressure and casting speed are particularly important.
【００２７】なお、コア材を金型内に配置する前に室温
以上の温度に予備加熱しておくことにより、コア材によ
る溶湯温度の低下を抑制することができる。また、鋳込
み温度より融点が低いコア材を用いることにより、鋳造
の際に溶湯の熱によりコア材の表面の一部が融解し、被
覆層との界面が連続的に合金化されて非晶質合金被覆層
とコア材との密着力が向上するが、コア材を予備加熱し
ておくことにより、コア材表面の融解が促進される。更
に、コア材の表面に凹凸を設けること、又は多孔質若し
くは網目状繊維群にすることにより、密着力をより一層
向上させることができる。By preheating the core material to a temperature equal to or higher than room temperature before placing it in the mold, it is possible to suppress a decrease in the melt temperature due to the core material. Further, by using a core material having a melting point lower than the casting temperature, part of the surface of the core material is melted by the heat of the molten metal during casting, and the interface with the coating layer is continuously alloyed and amorphous. Although the adhesion between the alloy coating layer and the core material is improved, preheating the core material promotes melting of the surface of the core material. Furthermore, by providing irregularities on the surface of the core material or forming a group of porous or mesh fibers, the adhesion can be further improved.
【００２８】以下、本実施例方法により非晶質合金被覆
部材を実際に製造し、その表面のＸ線回折を調べた結果
について説明する。The results of actually manufacturing the amorphous alloy coated member by the method of this embodiment and examining the X-ray diffraction of the surface will be described below.
【００２９】実施例１ 金型内に、コア材として直径が３ｍｍのＡｌ棒（室温）
を配置した。そして、前記金型内にＡｌ84Ｎｉ10Ｃｅ6
溶湯を鋳込み、直径が５ｍｍの棒状の複合材（非晶質合
金被覆部材）を得た。図２は、このようにして製造した
複合材の断面を示す図である。この図２に示すように、
この複合材はコア材１１とコア材１１の周面を被覆する
非晶質合金組成の被覆層１２とにより構成されており、
表面部分にのみ非晶質相を有している。 Example 1 In a mold, an Al rod having a diameter of 3 mm was used as a core material (at room temperature).
Was placed. Then, Al 84 Ni 10 Ce 6 is placed in the mold.
The molten metal was cast into a rod-shaped composite material (amorphous alloy-coated member) having a diameter of 5 mm. FIG. 2 is a view showing a cross section of the composite material manufactured in this manner. As shown in this FIG.
This composite material is composed of a core material 11 and a coating layer 12 of an amorphous alloy composition that coats the peripheral surface of the core material 11.
Only the surface portion has an amorphous phase.
【００３０】実施例２，比較例１ 実施例２として、金型内に直径が３ｍｍのＡｌ棒を配置
した後、前記金型内にＡｌ84Ｎｉ10Ｃｅ6 の溶湯を鋳込
んで、直径が５ｍｍの非晶質合金被覆部材を得た。ま
た、比較例１として、前記金型にコア材を配置しない以
外は実施例２と同様にして、前記非晶質合金組成の棒材
を得た。図３は、横軸に角度をとり、縦軸に回折強度を
とって、実施例２及び比較例１の表面のＸ線回折図形を
示す図である。この図３から、比較例１の表面は結晶相
であるが、実施例２の表面は非晶質相となっていること
がわかる。 Example 2, Comparative Example 1 As Example 2, after placing an Al rod having a diameter of 3 mm in a mold, a molten metal of Al 84 Ni 10 Ce 6 was cast into the mold to obtain A 5 mm amorphous alloy coated member was obtained. In addition, as Comparative Example 1, a bar material having the amorphous alloy composition was obtained in the same manner as in Example 2 except that the core material was not arranged in the mold. FIG. 3 is a diagram showing X-ray diffraction patterns of the surfaces of Example 2 and Comparative Example 1, with the horizontal axis representing the angle and the vertical axis representing the diffraction intensity. From FIG. 3, it can be seen that the surface of Comparative Example 1 has a crystalline phase, but the surface of Example 2 has an amorphous phase.
【００３１】実施例３，比較例２ 実施例３として、金型内に直径が２ｍｍのＡｌ棒を配置
した後、前記金型内にＡｌ84Ｎｉ10Ｃｅ6 の溶湯を鋳込
んで、直径が３ｍｍの非晶質合金被覆部材を得た。ま
た、比較例２として、前記金型にコア材を配置しない以
外は実施例３と同様にして、前記非晶質合金組成の棒材
を得た。図４は、横軸に角度をとり、縦軸に回折強度を
とって、実施例３及び比較例２の表面のＸ線回折図形を
示す図である。この図４から、比較例２の表面は結晶相
であるが、実施例３の表面は大部分が非晶質相となって
いることがわかる。 Example 3, Comparative Example 2 As Example 3, after placing an Al rod having a diameter of 2 mm in the mold, a molten metal of Al 84 Ni 10 Ce 6 was cast into the mold to obtain A 3 mm amorphous alloy coated member was obtained. In addition, as Comparative Example 2, a bar material having the amorphous alloy composition was obtained in the same manner as in Example 3 except that the core material was not arranged in the mold. FIG. 4 is a diagram showing X-ray diffraction patterns of the surfaces of Example 3 and Comparative Example 2, with the horizontal axis representing the angle and the vertical axis representing the diffraction intensity. From FIG. 4, it can be seen that the surface of Comparative Example 2 is a crystalline phase, but the surface of Example 3 is mostly an amorphous phase.
【００３２】図５（ａ），（ｂ）は、本発明の第２の実
施例に係る非晶質合金被覆部材の製造方法を工程順に示
す模式図である。FIGS. 5A and 5B are schematic views showing a method of manufacturing an amorphous alloy coated member according to the second embodiment of the present invention in the order of steps.
【００３３】先ず、図５（ａ）に示すように、石英製ノ
ズル２１内に非晶質合金組成（例えば、Ｌａ55Ａｌ25Ｃ
ｕ10Ｎｉ5Ｃｏ5）の母合金２２を装入する。ノズル２１
は、円筒状であり、その下端部には直径が約１ｍｍの孔
２１ａが設けられている。また、Ｃｕ製金型２４に設け
られた直径が６ｍｍの孔２４ａ内に、コア材２７として
例えば直径が４ｍｍのＡｌ棒を装入する。そして、ノズ
ル２１に装入した母合金２２を高周波コイル２３の内側
に配置し、高周波誘導加熱により溶解する。First, as shown in FIG. 5A, an amorphous alloy composition (for example, La 55 Al 25 C) is filled in the quartz nozzle 21.
A master alloy 22 of u 10 Ni 5 Co 5 ) is charged. Nozzle 21
Has a cylindrical shape, and a hole 21a having a diameter of about 1 mm is provided at the lower end thereof. Further, for example, an Al rod having a diameter of 4 mm is inserted as the core material 27 into the hole 24a having a diameter of 6 mm provided in the Cu mold 24. Then, the mother alloy 22 charged in the nozzle 21 is placed inside the high frequency coil 23 and melted by high frequency induction heating.
【００３４】次いで、図５（ｂ）に示すように、ノズル
２１を下降させてこのノズル２１を金型２４の孔２４ａ
の上部に配置する。そして、ノズル２１内の溶湯２５に
０．３ｋｇｆ／ｃｍ2 以上のガス圧を加えて、溶湯２５
を孔２４ａ内に注入する。なお、溶湯温度及び金型温度
等の条件は、第１の実施例と同様とする。このようにし
て、厚さが１ｍｍのアモルファスの表面層を有する部材
を製造することができる。Then, as shown in FIG. 5 (b), the nozzle 21 is lowered to move the nozzle 21 into the hole 24a of the mold 24.
Placed on top of. Then, a gas pressure of 0.3 kgf / cm 2 or more is applied to the molten metal 25 in the nozzle 21 to melt the molten metal 25.
Is injected into the hole 24a. The conditions such as the molten metal temperature and the mold temperature are the same as those in the first embodiment. In this way, a member having an amorphous surface layer with a thickness of 1 mm can be manufactured.
【００３５】本実施例においては、装置が小型であり、
非晶質合金被覆層を備えた部材を第１の実施例に比して
より一層容易に製造することができるという利点があ
る。In this embodiment, the device is small and
There is an advantage that the member having the amorphous alloy coating layer can be manufactured more easily than in the first embodiment.
【００３６】図６は、横軸に角度をとり、縦軸に回折強
度をとって、上述の実施例方法により製造した非晶質合
金被覆部材の表面のＸ線回折図形を示す図である。な
お、コア材は直径が４ｍｍのＡｌ棒であり、非晶質合金
組成はＬａ55Ａｌ25Ｎｉ10Ｃｕ5Ｃｏ5である。また、製
造後の非晶質合金被覆部材の直径は６ｍｍである。この
図６から、本実施例方法により製造した非晶質合金被覆
部材の表面の大部分が非晶質となっていることがわか
る。FIG. 6 is a diagram showing an X-ray diffraction pattern of the surface of the amorphous alloy-coated member manufactured by the method of the above-mentioned embodiment, with the horizontal axis representing the angle and the vertical axis representing the diffraction intensity. The core material is an Al rod having a diameter of 4 mm, and the amorphous alloy composition is La 55 Al 25 Ni 10 Cu 5 Co 5 . The diameter of the amorphous alloy coated member after manufacturing is 6 mm. It can be seen from FIG. 6 that most of the surface of the amorphous alloy-coated member manufactured by the method of this example is amorphous.
【００３７】なお、本発明方法における鋳造雰囲気とし
ては、大気雰囲気、Ａｒ雰囲気又は真空雰囲気等であっ
てもよい。また、本発明は、ダイカスト法、真空鋳造法
等の加圧鋳造法及び溶湯鍛造法等を利用した非晶質合金
被覆部材の製造に適用することができる。The casting atmosphere in the method of the present invention may be an air atmosphere, an Ar atmosphere, a vacuum atmosphere or the like. Further, the present invention can be applied to the production of an amorphous alloy coated member using a pressure casting method such as a die casting method or a vacuum casting method, a molten metal forging method, or the like.
【００３８】[0038]
【発明の効果】以上説明したように本発明に係る非晶質
合金被覆部材の製造方法によれば、金型内にコア材を配
置した後、前記金型内に非晶質合金組成の溶湯を注入し
て非晶質合金被覆層を形成するから、所望の大きさの非
晶質合金被覆部材を容易に製造できる。また、非晶質合
金被覆部材の生産性を向上できて、非晶質合金被覆部材
の製造コストを低減できるという効果を奏する。As described above, according to the method for producing an amorphous alloy-coated member according to the present invention, after the core material is placed in the mold, the molten metal having the amorphous alloy composition is placed in the mold. To form an amorphous alloy coating layer, an amorphous alloy coating member having a desired size can be easily manufactured. In addition, the productivity of the amorphous alloy coated member can be improved, and the manufacturing cost of the amorphous alloy coated member can be reduced.
【図１】 （ａ），（ｂ）は、本発明の第１の実施例に
係る非晶質合金被覆部材の製造方法を工程順に示す模式
図である。1A and 1B are schematic views showing a method of manufacturing an amorphous alloy-coated member according to a first embodiment of the present invention in the order of steps.
【図２】 実施例１の複合材の断面を示す図である。2 is a diagram showing a cross section of the composite material of Example 1. FIG.
【図３】 実施例２及び比較例１の表面のＸ線回折図形
を示す図である。FIG. 3 is a diagram showing X-ray diffraction patterns of the surfaces of Example 2 and Comparative Example 1.
【図４】 実施例３及び比較例２の表面のＸ線回折図形
を示す図である。FIG. 4 is a diagram showing X-ray diffraction patterns of the surfaces of Example 3 and Comparative Example 2.
【図５】 （ａ），（ｂ）は、本発明の第２の実施例に
係る非晶質合金被覆部材の製造方法を工程順に示す模式
図である。5 (a) and 5 (b) are schematic views showing, in the order of steps, a method for manufacturing an amorphous alloy coated member according to the second embodiment of the present invention.
【図６】 第２の実施例方法により製造した非晶質合金
被覆部材の表面のＸ線回折図形を示す図である。FIG. 6 is a diagram showing an X-ray diffraction pattern of the surface of an amorphous alloy-coated member manufactured by the second example method.
１，２，２４…金型、３，１１，２７…コア材、４，２
５…溶湯、５，６…プランジャ、７…キャビティ、８…
溶湯保持部、９…湯口、１２…被覆層、２１…ノズル、
２２…母合金、２３…高周波コイル1, 2, 24 ... Mold, 3, 11, 27 ... Core material, 4, 2
5 ... Molten metal, 5, 6 ... Plunger, 7 ... Cavity, 8 ...
Molten metal holding portion, 9 ... Gate, 12 ... Covering layer, 21 ... Nozzle,
22 ... Mother alloy, 23 ... High frequency coil
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井上 明久 宮城県仙台市青葉区川内無番地 (72)発明者 尾山 勝彦 静岡県浜松市中沢町10番１号 ヤマハ株式 会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihisa Inoue No Kawachi, Aoba-ku, Sendai City, Miyagi Prefecture (72) Inventor Katsuhiko Oyama 10-1 Nakazawa Town, Hamamatsu City, Shizuoka Prefecture Yamaha Stock Company
Claims (3)
金型内に非晶質合金組成の溶湯を注入して前記コア材の
少なくとも一部を被覆する非晶質合金被覆層を形成する
工程とを有することを特徴とする非晶質合金被覆部材の
製造方法。1. A step of disposing a core material in a mold, and an amorphous alloy coating layer for injecting a melt of an amorphous alloy composition into the mold to cover at least a part of the core material. And a step of forming the amorphous alloy-coated member.
金型内に配置することを特徴とする請求項１に記載の非
晶質合金被覆部材の製造方法。2. The method for manufacturing an amorphous alloy-coated member according to claim 1, wherein the core material is placed in the mold after being preheated.
が０．１乃至５０ｍｍであること特徴とする請求項１又
は２に記載の非晶質合金被覆部材の製造方法。3. The method for producing an amorphous alloy-coated member according to claim 1, wherein the distance between the inner wall surface of the mold and the core material is 0.1 to 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06131594A JP3392509B2 (en) | 1994-03-30 | 1994-03-30 | Manufacturing method of amorphous alloy coated member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06131594A JP3392509B2 (en) | 1994-03-30 | 1994-03-30 | Manufacturing method of amorphous alloy coated member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07268597A true JPH07268597A (en) | 1995-10-17 |
| JP3392509B2 JP3392509B2 (en) | 2003-03-31 |
Family
ID=13167606
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06131594A Expired - Fee Related JP3392509B2 (en) | 1994-03-30 | 1994-03-30 | Manufacturing method of amorphous alloy coated member |
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| Country | Link |
|---|---|
| JP (1) | JP3392509B2 (en) |
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