JPH04254575A - Metal member having high melting point and production thereof - Google Patents
Metal member having high melting point and production thereofInfo
- Publication number
- JPH04254575A JPH04254575A JP3371391A JP3371391A JPH04254575A JP H04254575 A JPH04254575 A JP H04254575A JP 3371391 A JP3371391 A JP 3371391A JP 3371391 A JP3371391 A JP 3371391A JP H04254575 A JPH04254575 A JP H04254575A
- Authority
- JP
- Japan
- Prior art keywords
- melting point
- point metal
- high melting
- substrate
- metal 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 38
- 239000002184 metal Substances 0.000 title claims abstract description 38
- 238000002844 melting Methods 0.000 title claims description 22
- 230000008018 melting Effects 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000010941 cobalt Substances 0.000 claims abstract description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011733 molybdenum Substances 0.000 claims abstract description 11
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010937 tungsten Substances 0.000 claims abstract description 9
- 150000002739 metals Chemical class 0.000 claims abstract description 8
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 8
- 230000005496 eutectics Effects 0.000 claims abstract description 7
- 238000009792 diffusion process Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 239000003870 refractory metal Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- SFJBWZNTPHYOEH-UHFFFAOYSA-N cobalt Chemical compound [Co].[Co].[Co] SFJBWZNTPHYOEH-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 etc. Chemical compound 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、各種機械部材や構造材
として用いられる表面硬さが改良された高融点金属部材
並びにその製造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 high melting point metal member with improved surface hardness used as various mechanical parts and structural materials, and a method for manufacturing the same.
【０００２】0002
【従来の技術】高融点金属たるタングステンやモリブデ
ンは、引張り強さ等の機械的強度が高く、又耐熱性にも
優れるため各種機械部材や構造材として従来から広く用
いられている。しかし乍らこれらの高融点金属は加工度
が十分高くないときには比較的硬度が低いために、各種
ノズル，ダイス，プリンターピン，ガイドあるいは摺動
部材として用いる時に部分的な摩耗や変形が生起する場
合があった。BACKGROUND OF THE INVENTION Tungsten and molybdenum, which are high melting point metals, have high mechanical strength such as tensile strength and excellent heat resistance, so they have been widely used as various mechanical parts and structural materials. However, since these high-melting point metals have relatively low hardness when the degree of processing is not sufficiently high, partial wear or deformation may occur when used as various nozzles, dies, printer pins, guides, or sliding members. was there.
【０００３】又鉄，コバルトおよびニッケル等と、タン
グステンあるいはモリブデンの合金が高い硬度を有する
ことは周知である。しかし乍らこれらの合金は非常に脆
く割れ易いために、鍛造等の方法により所定の形状に加
工することが困難で、又線引き等の方法によって細線と
することも難しく、従来これらの合金を機械部材や構造
材として利用することは行われていなかった。It is also well known that alloys of iron, cobalt, nickel, etc., and tungsten or molybdenum have high hardness. However, since these alloys are extremely brittle and easily cracked, it is difficult to process them into a specified shape using methods such as forging, and it is also difficult to form thin wires using methods such as wire drawing. It was not used as a component or structural material.
【０００４】0004
【発明が解決しようとする課題】本発明は、上記問題点
を解消し、表面硬度が高い高融点金属部材並びにその製
造方法を提供することを目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a high melting point metal member having high surface hardness and a method for manufacturing the same.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明で採用する手段は次の通りである。即ち、予め
所定形状に加工された高融点金属基体の表面に、鉄，コ
バルトおよびニッケルの中の１種又は２種以上の金属と
上記高融点金属との拡散層を有する高融点金属部材であ
り、又その製造方法としては、予め所定形状に加工した
高融点金属基体の表面に、鉄，コバルトおよびニッケル
の中の１種又は２種以上の金属層を施した後、非酸化性
雰囲気に於いて、該金属層と高融点金属基体の共晶温度
以上に加熱する方法である。Means for Solving the Problems The means employed in the present invention to achieve the above object are as follows. That is, it is a high melting point metal member that has a diffusion layer of one or more metals selected from iron, cobalt, and nickel and the above high melting point metal on the surface of a high melting point metal base that has been previously processed into a predetermined shape. , and its manufacturing method includes applying a layer of one or more metals selected from iron, cobalt, and nickel to the surface of a high-melting point metal substrate that has been previously processed into a predetermined shape, and then placing the layer in a non-oxidizing atmosphere. In this method, the metal layer is heated to a temperature higher than the eutectic temperature of the metal layer and the high melting point metal substrate.
【０００６】[0006]
【作用】鉄，コバルトおよびニッケルと、タングステン
あるいはモリブデンの合金は、１３００〜１５００℃付
近に共晶点を有し、共晶点以上の温度に於いて液相を生
じ全体がぬれると同時に、鉄，コバルトおよびニッケル
の高融点金属への拡散が生じる。本発明の加熱温度は液
相が生ずる温度以上であれば特に限定されるものではな
いが、通常は共晶温度より５０〜１００℃高い温度域で
行う。[Function] An alloy of iron, cobalt, nickel, and tungsten or molybdenum has a eutectic point around 1,300 to 1,500°C, and at a temperature above the eutectic point, it forms a liquid phase, and at the same time, the entire iron is wetted. , diffusion of cobalt and nickel into refractory metals occurs. The heating temperature in the present invention is not particularly limited as long as it is at least the temperature at which a liquid phase occurs, but it is usually carried out in a temperature range 50 to 100° C. higher than the eutectic temperature.
【０００７】又加熱時間も特に限定されるものではなく
、後述実施例で示すように５分間程度の短時間でも目的
とする表面硬度が高い高融点金属部材を得ることができ
る。熱処理を非酸化性雰囲気で行うのは、高融点金属部
材の酸化を防ぐためであり、通常は雰囲気として水素や
不活性ガス等を用いる。[0007] The heating time is also not particularly limited, and as shown in the examples below, a high melting point metal member with a high surface hardness can be obtained even in a short time of about 5 minutes. The reason why the heat treatment is performed in a non-oxidizing atmosphere is to prevent the high melting point metal member from oxidizing, and hydrogen, an inert gas, or the like is usually used as the atmosphere.
【０００８】鉄，コバルトおよびニッケルは、通常その
粉末をアルコール等を用いてスラリー状として塗布する
のが便利であるが、必要に応じ箔を貼り付けたり、メッ
キ等により必要とする部所に施せばよい。これらの金属
はタングステンあるいはモリブデンとのぬれ性が良いた
め必ずしも全体を均一に被う必要はない。[0008] It is usually convenient to apply iron, cobalt, and nickel powder in the form of a slurry using alcohol, but if necessary, it can be applied to the required areas by pasting foil or plating. Bye. Since these metals have good wettability with tungsten or molybdenum, it is not necessarily necessary to cover the entire surface uniformly.
【０００９】[0009]
【実施例】以下本発明をその実施例に基づき詳述する。EXAMPLES The present invention will be described in detail below based on examples.
【００１０】 実施例１
予め圧延加工をしたモリブデン板材の表面に、表１に示
す如き各金属粉末を塗布し、水素炉中各温度で熱処理し
、表面硬度を測定した結果を表１に示す。なおこの表１
には本発明範囲外の例をも比較例として併記した。又エ
ネルギー分散型Ｘ線分析装置により調べた表面拡散層の
Ｃｏ，ＭｏのＸ線写真をそれぞれ図１，図２に示す。Example 1 Each metal powder shown in Table 1 was applied to the surface of a molybdenum plate material that had been rolled in advance, and the powder was heat-treated at various temperatures in a hydrogen furnace, and the surface hardness was measured. Table 1 shows the results. Note that this table 1
Examples outside the scope of the present invention are also listed as comparative examples. Further, X-ray photographs of Co and Mo in the surface diffusion layer examined using an energy dispersive X-ray analyzer are shown in FIGS. 1 and 2, respectively.
【００１１】[0011]
【表１】[Table 1]
【００１２】表１から明らかな如く、鉄，コバルトおよ
びニッケルを塗布し共晶温度以上に加熱した例では、通
常のモリブデンに比べいずれも大幅な硬度の上昇がみら
れた。As is clear from Table 1, in the examples in which iron, cobalt and nickel were coated and heated above the eutectic temperature, a significant increase in hardness was observed in all cases compared to ordinary molybdenum.
【００１３】 実施例２
予め圧延加工をしたタングステン板材の表面に、コバル
ト粉末を塗布し、水素炉中１５００℃に於いて５分間加
熱処理をした。処理前のタングステンの硬度がＨＶ４１
７ｋｇｆ／ｍｍ２ であったのに対し、処理後の表面硬
度はＨＶ８２６ｋｇｆ／ｍｍ２ と大幅な上昇が見られ
た。Example 2 Cobalt powder was applied to the surface of a tungsten plate material that had been rolled in advance, and heat treated for 5 minutes at 1500° C. in a hydrogen furnace. Hardness of tungsten before treatment is HV41
7 kgf/mm2, whereas the surface hardness after treatment was HV826 kgf/mm2, a significant increase.
【００１４】[0014]
【発明の効果】以上述べてきたように、本発明によれば
高融点金属基体を予め所定の形状に加工した後に表面処
理を行うため任意の形状の物を製作でき、更に得られた
高融点金属部材の内部は通常の高融点金属であるため部
材全体としては靱性があり、表面には拡散層が形成され
ているため剥離し難く硬度が大で耐摩耗性に優れさらに
耐食，耐酸化性に優れる。又表面の拡散層の形成は、表
面に鉄，コバルトおよびニッケルの中の１種又は２種以
上の金属層を施して熱処理するだけであるので必要な部
所のみの硬度を上げることもできる。[Effects of the Invention] As described above, according to the present invention, since a high melting point metal substrate is processed into a predetermined shape in advance and then subjected to surface treatment, objects of any shape can be manufactured. The interior of the metal component is a normal high-melting point metal, so the component as a whole is tough, and a diffusion layer is formed on the surface, which makes it difficult to peel off, has high hardness, and has excellent wear resistance, as well as corrosion and oxidation resistance. Excellent in In addition, the formation of the diffusion layer on the surface can be achieved by simply applying a layer of one or more metals selected from iron, cobalt, and nickel to the surface and then heat-treating the surface, so that the hardness can be increased only in the necessary portions.
【００１５】[0015]
【図１】表面を硬化したモリブデン板材の表面拡散層の
Ｃｏの拡散状態を示すＸ線写真である。FIG. 1 is an X-ray photograph showing the state of Co diffusion in the surface diffusion layer of a molybdenum plate material with a hardened surface.
【図２】表面を硬化したモリブデン板材の表面拡散層の
Ｍｏの拡散状態を示すＸ線写真である。FIG. 2 is an X-ray photograph showing the state of Mo diffusion in the surface diffusion layer of a molybdenum plate material with a hardened surface.
Claims (4)
基体の表面に、鉄，コバルトおよびニッケルの中の１種
又は２種以上の金属と上記高融点金属との拡散層を有す
ることを特徴とした高融点金属部材。1. A diffusion layer of one or more metals selected from iron, cobalt, and nickel and the above-mentioned high-melting point metal is provided on the surface of a high-melting point metal substrate that has been previously processed into a predetermined shape. High melting point metal parts.
いはモリブデンであることを特徴とした請求項１記載の
高融点金属部材。2. The refractory metal member according to claim 1, wherein the refractory metal substrate is tungsten or molybdenum.
基体の表面に、鉄，コバルトおよびニッケルの中の１種
又は２種以上の金属層を施した後、非酸化性雰囲気に於
いて、該金属層と高融点金属基体の共晶温度以上に加熱
することを特徴とした高融点金属部材の製造方法。3. After applying a metal layer of one or more of iron, cobalt, and nickel to the surface of a high-melting point metal substrate that has been previously processed into a predetermined shape, in a non-oxidizing atmosphere, A method for producing a high melting point metal member, comprising heating the metal layer and the high melting point metal substrate to a temperature higher than the eutectic temperature.
はモリブデンであることを特徴とした請求項３記載の高
融点金属部材の製造方法。4. The method for producing a high melting point metal member according to claim 3, wherein the high melting point metal substrate is tungsten or molybdenum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3371391A JPH04254575A (en) | 1991-02-01 | 1991-02-01 | Metal member having high melting point and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3371391A JPH04254575A (en) | 1991-02-01 | 1991-02-01 | Metal member having high melting point and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04254575A true JPH04254575A (en) | 1992-09-09 |
Family
ID=12394054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3371391A Withdrawn JPH04254575A (en) | 1991-02-01 | 1991-02-01 | Metal member having high melting point and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04254575A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2523857A (en) * | 2012-02-24 | 2015-09-09 | Charles Malcolm Ward-Close | Processing of metal or alloy objects |
-
1991
- 1991-02-01 JP JP3371391A patent/JPH04254575A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2523857A (en) * | 2012-02-24 | 2015-09-09 | Charles Malcolm Ward-Close | Processing of metal or alloy objects |
| GB2499669B (en) * | 2012-02-24 | 2016-08-10 | Malcolm Ward-Close Charles | Processing of metal or alloy objects |
| GB2523857B (en) * | 2012-02-24 | 2016-09-14 | Malcolm Ward-Close Charles | Processing of metal or alloy objects |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980514 |