JPH01268806A - Complex body of high melting point different metals and manufacture thereof - Google Patents
Complex body of high melting point different metals and manufacture thereofInfo
- Publication number
- JPH01268806A JPH01268806A JP9539888A JP9539888A JPH01268806A JP H01268806 A JPH01268806 A JP H01268806A JP 9539888 A JP9539888 A JP 9539888A JP 9539888 A JP9539888 A JP 9539888A JP H01268806 A JPH01268806 A JP H01268806A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- powder
- melting point
- high melting
- dissimilar metal
- 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.)
- Pending
Links
- 238000002844 melting Methods 0.000 title claims description 19
- 230000008018 melting Effects 0.000 title claims description 19
- 229910052751 metal Inorganic materials 0.000 title claims description 14
- 239000002184 metal Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 150000002739 metals Chemical class 0.000 title description 3
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 10
- 229910001182 Mo alloy Inorganic materials 0.000 claims abstract description 9
- 239000002905 metal composite material Substances 0.000 claims description 20
- 239000002131 composite material Substances 0.000 claims description 17
- 238000005242 forging Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000012805 post-processing Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000010405 anode material Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、Ｘ線管用の回転陽極材料として、用いられて
おり、２種以上の金属により構成された多層構造を有す
る高融点異種金属複合体及びその製造方法に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention is a high melting point dissimilar metal composite material having a multilayer structure composed of two or more metals, which is used as a rotating anode material for an X-ray tube. body and its manufacturing method.
［従来の技術］
一般に、２種以上の金属を重ね合わぜな多層構造の複合
体は、接着、ろう付、溶接等の種々の方法で製造されて
いる。一方、高融点金属であるＷ。[Prior Art] Generally, multilayered composites made by laminating two or more metals are manufactured by various methods such as adhesion, brazing, and welding. On the other hand, W is a high melting point metal.
ＭＯの多層構造複合体を得る場合には、Ｗ板及びＭＯ板
の接合部に低融点の異種金属バインダを入れた後に熱間
加工する方法が行われている。これは、Ｗ板及びＭＯ板
双方ともに融点が高く、一方の金属を溶融して他方に接
着する溶接等は困難であるからである。In order to obtain an MO multilayer structure composite, a method is used in which a low melting point dissimilar metal binder is placed in the joint between the W plate and the MO plate, and then hot working is performed. This is because both the W plate and the MO plate have high melting points, and it is difficult to weld or otherwise melt one metal and bond it to the other.
第４図は、上記した方法によって製作された従来の異種
金属複合体の接合部分の組ａ構造を示す顕微鏡写真（×
１００）である、この写真中央部の細粒部分はバインダ
に使用した異種金属層が見られ、写真下部には、異種金
属層に続＜Ｍｏ層の粗大粒子、写真上部には、異種金属
層に続くこの異種金属層と境界部を共有するＷ層が見ら
れる。FIG. 4 is a micrograph (×
100), a dissimilar metal layer used as a binder can be seen in the fine-grained part in the center of this photograph, and in the lower part of the photograph, the coarse particles of the Mo layer following the dissimilar metal layer, and in the upper part of the photograph, a dissimilar metal layer. Following this, a W layer can be seen that shares a boundary with this dissimilar metal layer.
［発明が解決しようとする課題］
しかしながら、低融点異種金属バインダは、接着強度が
極めて弱くまた熱に対しても極端に弱いので、高融点金
属複合体の利点が損なわれるという不都合を生じた。[Problems to be Solved by the Invention] However, the low melting point dissimilar metal binder has extremely low adhesive strength and is extremely weak against heat, resulting in the disadvantage that the advantages of the high melting point metal composite are lost.
本発明は、上記欠点に鴬みてなされており、接着強度が
極めて良好であり、さらに大きな耐熱性を有する高融点
異種金属複合体及びそ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-mentioned drawbacks, and an object of the present invention is to provide a high melting point dissimilar metal composite having extremely good adhesive strength and greater heat resistance, and a method for manufacturing the same.
［課題を解決するための手段］
本発明によれば、Ｗ層、Ｍｏ層及びＷ層及びＭｏＭとの
間に介在するＷ −Ｍ ｏ合金層を含み、このＷ−Ｍ
ｏ合金層の厚さは１０μｍ〜１００）ｔ Ｉｎの範囲内
であることを特徴とする高融点異種金属複合体が得られ
る。[Means for Solving the Problems] According to the present invention, the W-Mo alloy layer includes a W layer, a Mo layer, and a W-Mo alloy layer interposed between the W layer and the MoM.
A high melting point dissimilar metal composite is obtained, characterized in that the thickness of the o-alloy layer is within the range of 10 μm to 100)t In.
本発明によれば、Ｗ粉末及びＭｏ粉末からなる複合圧粉
体をプレス成形により得る成形工程と、この複合圧粉体
を還元雰囲気中で焼結する焼結工程とを有し、前記Ｗ粉
末及びＭｏ粉末の平均粒度は１〜６μｍの範囲内にあり
、前記Ｍｏ粉末と前記Ｗ粉末の平均粒度の差が０μｍ〜
１μｍの範囲内であることを特徴とする異種金属複合体
の製造方法が得られる。すなわち本発明において、原料
のＷ粉末及びＭｏ粉末としては、１〜６μｍの範囲内で
の平均粒度を有するものを使用する。焼結晶のままで製
品となるものについては接着歩留を上げる為、ＷとＭｏ
同じ粒度あるいはＭｏ粉末の方がＷ粉末より粗粒でその
平均粒度の差が１μｍ以内が好ましい。According to the present invention, the W powder and the Mo powder have a forming step of obtaining a composite green compact by press molding, and a sintering step of sintering the composite green compact in a reducing atmosphere. The average particle size of the Mo powder is in the range of 1 to 6 μm, and the difference in the average particle size of the Mo powder and the W powder is 0 μm to 6 μm.
A method for producing a dissimilar metal composite characterized in that the particle size is within the range of 1 μm is obtained. That is, in the present invention, the raw material W powder and Mo powder have an average particle size within the range of 1 to 6 μm. For products that remain as fired crystals, W and Mo are used to increase the bonding yield.
It is preferable that the particle size is the same, or that the Mo powder is coarser than the W powder, and the difference in average particle size is within 1 μm.
複合体製造に使用されるＷ層及びＭｏ層よりなる複合圧
粉体はハンドリングが可能な程度でその強度については
充分ではないので、室温程度の温度から、急激に加熱し
たのでＪよ容易に剥離してしまう、また、Ｗ層に比較し
て、Ｍｏ層の焼結が比較的低温で進むのでＷ層側の割れ
が生じやすい。The composite powder compact consisting of the W layer and the Mo layer used for composite production is easy to handle, but its strength is not sufficient, so it was heated rapidly from about room temperature, so it was easily peeled off. Moreover, since the Mo layer is sintered at a relatively low temperature compared to the W layer, cracks tend to occur on the W layer side.
したがって、焼結工程において、Ｗ層の強度の増加と、
Ｍｏ層の焼結の進行度合のバランスを保つためには、最
高温度までの昇温速度を２００℃／Ｈｒ以下とする必要
がある。また、ＭｏＭとＷ層ともに切削加工及び塑性加
工が可能な焼結体とするには、その融点に対して幾分低
い１７００〜２０００℃の範囲内の温度で、１５〜４０
時間の長時間焼結を行うことが好ましい０本発明におい
ては、Ｗ粉末及びＭｏ粉末をプレスし、得られた複合圧
粉体から更にＭｏ層とＷ層が剥離しない条件で水素雰囲
気中でこの複合圧粉体を焼結して、接合部にＷ −Ｍ
ｏの合金層を生じさせる。このため、０℃から１６００
℃迄の１０分間の昇温・急冷サイクルを繰り返しても、
その接合部で剥れを発生ぜず、圧延力１ｆ工もしくは鍛
造加工品においても、接合強度の大きな複数ＨＪｉｖｉ
造の高融点異種金属複合体が得られる。Therefore, in the sintering process, the strength of the W layer increases and
In order to maintain a balance in the progress of sintering of the Mo layer, the rate of temperature increase to the maximum temperature needs to be 200° C./Hr or less. In addition, in order to make a sintered body that can be machined and plastically worked with both the MoM and W layers, it is necessary to use a sintered body at a temperature of 15 to 40°C, which is somewhat lower than the melting point of the MoM layer.
It is preferable to perform sintering for a long time. In the present invention, W powder and Mo powder are pressed, and the Mo layer and W layer are pressed in a hydrogen atmosphere under conditions that the Mo layer and W layer do not separate from the obtained composite compact. Sinter the composite compact and apply W-M to the joint.
This produces an alloy layer of o. For this reason, from 0℃ to 1600℃
Even after repeating the 10-minute heating/quenching cycle to
Multiple HJivi with high bonding strength that does not cause peeling at the joint and can be used in rolling force 1f work or forged products.
A high melting point dissimilar metal composite is obtained.
［実施例］ 本発明の実施例を図面を参照しながら説明する。[Example] Embodiments of the present invention will be described with reference to the drawings.
実施例１
本発明の実施例に係る異種金属複合体について説明する
。Example 1 A dissimilar metal composite according to an example of the present invention will be described.
第１図は、本発明の実施例に係る複合体の接合部分の組
Ｒ構造を示す顕微鏡写真である。この写真の中央部より
上方が粒子径の小さなＷ層、下方が粒子径の大きなＭｏ
層で、両層に介在する部分には、Ｗの含有量が１減して
いるＷ −Ｍ ｏの合金層と呼ぶ固溶体漸移相が認めら
れる。Ｗ−Ｍｏ合金層の厚さは約８０μｍ程度である。FIG. 1 is a photomicrograph showing the group R structure of the joint portion of a composite according to an example of the present invention. Above the center of this photo is the W layer with a small particle size, and below is the Mo layer with a large particle size.
In the portion between both layers, a gradual solid solution phase shift called a W--Mo alloy layer in which the W content is reduced by 1 is observed. The thickness of the W-Mo alloy layer is about 80 μm.
第１図に示す本発明の複合体は第４図に示す比較例に係
る複合材のように、異種金属層を接合部に存していない
ため、比較例に比べて、非常に高い接合強度を有する。Unlike the composite material according to the comparative example shown in FIG. 4, the composite of the present invention shown in FIG. has.
次に、本発明の実施例１に係る高融点異種金属複合体の
製造方法について説明する。平均粒度３．５μｍのＷ粉
と平均粒度３．８μｍの粉末各５００ｇを金型にて除圧
時のスプリングバックの差が境界部に集中するのを防ぎ
ながら複合圧粉体を製造した０次に、この複合圧粉体を
２００℃／）−Ｉ ｒで１０時間昇温して、１８００℃
にした後、１８００’Ｃで３０時間水素ガス中で焼結を
行ったにの場合、複合体焼結体の直径は９８印であり、
Ｗ層の厚さは、３．８關、Ｍｏ層の厚さは７．０市であ
った。以後、この複合体としての焼結体を後加工工程と
して鍛造率４０％で鍛造した後、円周を切削し、直径１
００關、Ｗ層の厚さ３．２闇、Ｍ ｏ ｒｒ４の厚さ３
．８關の試片を作成した。Next, a method for manufacturing a high melting point dissimilar metal composite according to Example 1 of the present invention will be described. A zero-order composite compact was manufactured by using 500 g each of W powder with an average particle size of 3.5 μm and powder with an average particle size of 3.8 μm in a mold to prevent the difference in springback from concentrating on the boundary when the pressure was released. Then, the temperature of this composite powder compact was raised at 200°C/)-Ir for 10 hours to 1800°C.
After sintering in hydrogen gas at 1800'C for 30 hours, the diameter of the composite sintered body was 98 marks,
The thickness of the W layer was 3.8 mm, and the thickness of the Mo layer was 7.0 mm. Thereafter, this composite sintered body was forged at a forging rate of 40% as a post-processing step, and then the circumference was cut to a diameter of 1.
00 degree, W layer thickness 3.2 darkness, M o rr4 thickness 3
．． Eight specimens were prepared.
次に、本発明の実施例に係る高融点異種金属後３体のヒ
ートサイクル試験について説明する。Next, a heat cycle test of three high melting point dissimilar metal bodies according to an example of the present invention will be described.
第２図は、本発明の実施例に係る異種金属複合体のヒー
トサイクル試験片の試験後の接合部分を示す顕微鏡写真
である。この写真において、中央より上層はＷ層、下層
はＭｏ層である。Ｗ層に割れが発生している。第５図は
、比較例に係る異種金属複合体のヒートサイクル試験片
の試験結果を示す顕微鏡写真である。この写真において
、中央より上層はＷ層、下層は、Ｍｏ層である。Ｗ層に
は、実施例の試験片と同様に割れが生じているがその大
きさは、実施例よりも大きい、更に、第５図には接合部
に剥れが生じている。このことから、実施例に係る高融
点異種金属複合体の試験片は接合強度が熱及び熱変化に
対して強いことが判る。FIG. 2 is a microscopic photograph showing a bonded portion of a heat cycle test piece of a dissimilar metal composite according to an example of the present invention after a test. In this photograph, the layer above the center is a W layer, and the layer below is a Mo layer. A crack has occurred in the W layer. FIG. 5 is a micrograph showing the test results of a heat cycle test piece of a dissimilar metal composite according to a comparative example. In this photograph, the layer above the center is a W layer, and the layer below is a Mo layer. Cracks occur in the W layer, similar to the test pieces of Examples, but the size of the cracks is larger than in Examples.Furthermore, in FIG. 5, peeling occurs at the joints. From this, it can be seen that the test piece of the high melting point dissimilar metal composite according to the example has a high bonding strength against heat and thermal changes.
第２図及び第５図のような試験片のヒートサイの
クル試験は以下１条件のもとで行われた。実施例１の方
法にて作成した直径１００關、Ｗ層の厚さ３．２ｎ＋ｙ
＋、Ｍｏ層の厚さ３．８団の試験片を用いた。第３図は
異種金属複合体試験片の加熱サイクルを示す図である。The heat cycle test of the test pieces shown in FIGS. 2 and 5 was conducted under the following conditions. Created by the method of Example 1, diameter 100mm, W layer thickness 3.2n+y
+, Mo layer thickness 3.8 groups of test pieces were used. FIG. 3 is a diagram showing a heating cycle of a dissimilar metal composite test piece.
この図において、曲線１０のように実施例に係る試験片
は、一定の昇温速度１６０°（： ／ Ｈｒで１０分間
１６００°Ｃ程度まで昇温し、急冷する熱処理を施した
。この熱処理を５０回繰り返した後、試料を切断し接合
部の組繊構造の状態を５０倍の金属Ｔｇｎ微鏡で観察し
た。In this figure, as shown by curve 10, the test piece according to the example was subjected to heat treatment in which the temperature was raised to about 1600 °C for 10 minutes at a constant temperature increase rate of 160 ° (: / Hr), and then rapidly cooled. After repeating 50 times, the sample was cut and the state of the fiber structure at the joint was observed using a metal Tgn microscope with a magnification of 50 times.
本発明の実施例に係る高融点異種金属複合体の抗折試験
について説明する。A bending test of a high melting point dissimilar metal composite according to an example of the present invention will be explained.
表１は、実施例に係る異種金属複合体の抗折試験の結果
を示している。試験はヒートサイクル試験片と同様の試
料から幅１０止、長さ３０市、厚さは接合部を中央にし
てＷ層及びＭＯ層各々２．５市層厚で、全体の厚みが５
Ｌｌｌ＋の試験片により行なわれた。比較の為従来例に
係る異種金属複合体の抗折試験結果を併記した。Table 1 shows the results of the bending test of the dissimilar metal composites according to the examples. The test was conducted using a sample similar to the heat cycle test piece, with a width of 10 mm, a length of 30 mm, a thickness of 2.5 mm each for the W layer and MO layer with the joint at the center, and a total thickness of 5 mm.
The tests were carried out using Lll+ test pieces. For comparison, the results of a bending test of a dissimilar metal composite according to a conventional example are also shown.
第 １ 表
この表より実施例に係る異種金属複合体は抗折値の算術
平均は８３ 、２Ｋｇ／ｍｍ２、比較例は６１ 、、
ＯＫ（１／關２で、実施例に係る異種金属複合体の接合
強度が強いことを示している。Table 1 From this table, the arithmetic mean of the bending values of the dissimilar metal composites according to the examples is 83, 2Kg/mm2, and the comparative example is 61.
OK (1/2) indicates that the bonding strength of the dissimilar metal composite according to the example is strong.
［発明の効果コ
以上説明したように本発明によれば、Ｗ粉末及びＭｏ粉
末よりなる複合圧粉体を焼結することによりＷ層及びＭ
ｏｌとＷ層及びＭＯＮｉ間に介在するＷ−ＭＯ合金層を
生ぜしめるために、Ｗ層及びＭｏ層の接合強度の大きく
、更にＷ層及びＭｏ層の接合部の耐熱性も極めて優れた
Ｗ層、Ｍｏ層を含む多層構造を有する高融点異種金属複
合体を得ることができる。[Effects of the Invention] As explained above, according to the present invention, the W layer and the M
In order to create a W-MO alloy layer interposed between ol, W layer and MONi, a W layer is used which has high bonding strength between the W layer and Mo layer and also has extremely excellent heat resistance at the bonded portion between the W layer and Mo layer. , a high melting point dissimilar metal composite having a multilayer structure including a Mo layer can be obtained.
（Ｘ１００）、第２図は本発明の実施例に係る高第３図
は本発明の実施例に係るヒートサイクル試顕微鏡写真（
Ｘ１００）、第５図は従来例に係る・４ Ｉｌ （］
第３図
時 間 （分） □(X100), Fig. 2 is a photomicrograph of an example of the present invention (
X100), Figure 5 is related to the conventional example. 4 Il (] Figure 3 Time (minutes) □
Claims (1)
Ｗ−Ｍｏ合金層を含み、前記Ｗ−Ｍｏ合金層の厚さは１
０μｍ〜１００μｍの範囲内であることを特徴とする高
融点異種金属複合体。 ２、Ｗ粉末及びＭｏ粉末からなる複合圧粉体をプレス成
形により得る成形工程と、前記複合圧粉体を還元雰囲気
中で焼結する焼結工程とを有し、前記Ｗ粉末及び前記Ｍ
ｏ粉末の平均粒度は１〜６μｍの範囲内にあり、前記Ｍ
ｏ粉末と前記Ｗ粉末の平均粒度の差が０μｍ〜１μｍの
範囲内であることを特徴とする高融点異種金属圧粉体の
製造方法。 ３、前記焼結工程の後、圧延加工及び鍛造加工のうち少
くとも１種の加工を施す後加工工程を有することを特徴
とする第２の請求項記載の高融点異種金属複合体の製造
方法。[Claims] 1. The W-Mo alloy layer includes a W layer, a Mo layer, and a W-Mo alloy layer interposed between the W layer and the Mo layer, and the thickness of the W-Mo alloy layer is 1.
A high melting point dissimilar metal composite having a diameter within the range of 0 μm to 100 μm. 2. A forming step of obtaining a composite green compact made of W powder and Mo powder by press molding, and a sintering step of sintering the composite green compact in a reducing atmosphere, wherein the W powder and the M
o The average particle size of the powder is within the range of 1 to 6 μm, and the M
A method for producing a high melting point dissimilar metal compact, characterized in that the difference in average particle size between the O powder and the W powder is within a range of 0 μm to 1 μm. 3. The method for producing a high melting point dissimilar metal composite according to claim 2, further comprising a post-processing step of performing at least one of rolling and forging after the sintering step. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9539888A JPH01268806A (en) | 1988-04-20 | 1988-04-20 | Complex body of high melting point different metals and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9539888A JPH01268806A (en) | 1988-04-20 | 1988-04-20 | Complex body of high melting point different metals and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01268806A true JPH01268806A (en) | 1989-10-26 |
Family
ID=14136556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9539888A Pending JPH01268806A (en) | 1988-04-20 | 1988-04-20 | Complex body of high melting point different metals and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01268806A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590476A (en) * | 2018-12-21 | 2019-04-09 | 合肥工业大学 | The method that one-step method prepares high-compactness WRe/TZM gradient composites |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825850A (en) * | 1971-08-05 | 1973-04-04 | ||
| JPS493590A (en) * | 1972-03-13 | 1974-01-12 | ||
| JPS61264104A (en) * | 1985-05-20 | 1986-11-22 | Nippon Mining Co Ltd | Production of high melting point metallic sintered body |
-
1988
- 1988-04-20 JP JP9539888A patent/JPH01268806A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825850A (en) * | 1971-08-05 | 1973-04-04 | ||
| JPS493590A (en) * | 1972-03-13 | 1974-01-12 | ||
| JPS61264104A (en) * | 1985-05-20 | 1986-11-22 | Nippon Mining Co Ltd | Production of high melting point metallic sintered body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590476A (en) * | 2018-12-21 | 2019-04-09 | 合肥工业大学 | The method that one-step method prepares high-compactness WRe/TZM gradient composites |
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