JPS6369901A - Composite powder for sintering and its production - Google Patents
Composite powder for sintering and its productionInfo
- Publication number
- JPS6369901A JPS6369901A JP61210753A JP21075386A JPS6369901A JP S6369901 A JPS6369901 A JP S6369901A JP 61210753 A JP61210753 A JP 61210753A JP 21075386 A JP21075386 A JP 21075386A JP S6369901 A JPS6369901 A JP S6369901A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- powder
- alloy
- composite powder
- soluble
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 67
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000005245 sintering Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 81
- 239000002184 metal Substances 0.000 claims abstract description 81
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 29
- 239000000956 alloy Substances 0.000 claims abstract description 29
- 150000003839 salts Chemical class 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- 150000001412 amines Chemical class 0.000 claims abstract description 3
- 150000002148 esters Chemical class 0.000 claims abstract description 3
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 3
- 150000002576 ketones Chemical class 0.000 claims abstract description 3
- 229910000640 Fe alloy Inorganic materials 0.000 claims abstract 3
- 229910052742 iron Inorganic materials 0.000 claims abstract 3
- 150000001875 compounds Chemical class 0.000 claims description 21
- 239000003960 organic solvent Substances 0.000 claims description 15
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- 239000012266 salt solution Substances 0.000 claims description 7
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 claims description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 2
- YPTUAQWMBNZZRN-UHFFFAOYSA-N dimethylaminoboron Chemical compound [B]N(C)C YPTUAQWMBNZZRN-UHFFFAOYSA-N 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 239000008103 glucose Substances 0.000 claims description 2
- 229960001031 glucose Drugs 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- 229960005150 glycerol Drugs 0.000 claims description 2
- 229940015043 glyoxal Drugs 0.000 claims description 2
- 229960002163 hydrogen peroxide Drugs 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000012279 sodium borohydride Substances 0.000 claims description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 2
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 2
- 229940095064 tartrate Drugs 0.000 claims description 2
- 229910021472 group 8 element Inorganic materials 0.000 claims 2
- 150000002736 metal compounds Chemical class 0.000 claims 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002904 solvent Substances 0.000 abstract description 7
- 150000002739 metals Chemical class 0.000 abstract description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000006194 liquid suspension Substances 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- -1 4tJj Chemical compound 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 244000292604 Salvia columbariae Species 0.000 description 1
- 235000012377 Salvia columbariae var. columbariae Nutrition 0.000 description 1
- 235000001498 Salvia hispanica Nutrition 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000014167 chia Nutrition 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 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）
本発明は粉末冶金等に用いる焼結用複合粉末及びその製
造法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a composite powder for sintering used in powder metallurgy, etc., and a method for producing the same.
（従来の技術）
従来、粉末冶金等の分野においては、２種以上の金属よ
りなる焼結体を製造する場合、各金属の粉末をボールミ
ル等の機械的方法により混合したちあを原料粉末として
用いることが一般的であった。(Prior art) Conventionally, in fields such as powder metallurgy, when producing a sintered body made of two or more metals, powders of each metal are mixed using a mechanical method such as a ball mill, and chia is used as the raw material powder. This was common.
ところが、この方法では、比重差、形状差等に起因して
２種以上の金属粉を均一に混合することが困難であり、
得られた焼結体の均質性は満足すべきものではないとい
う不都合がある。However, with this method, it is difficult to uniformly mix two or more types of metal powder due to differences in specific gravity, shape, etc.
A disadvantage is that the homogeneity of the obtained sintered body is not satisfactory.
（発明が解決しようとする問題点）
本発明は上記問題点を解決するためになされたもので、
２種以上の金属粉を物理的に均一に混合したと同じ効果
が得られる焼結用複合粉末及びその製造法を提供するこ
とを目的とする。(Problems to be solved by the invention) The present invention has been made to solve the above problems.
It is an object of the present invention to provide a composite powder for sintering that provides the same effect as physically uniformly mixing two or more types of metal powder, and a method for producing the same.
（問題点を解決するための手段および作用）上記目的を
達成するために第１の本発明によれば、１００メツシュ
より微細な第１の金属もしくはその合金もしくはその化
合物粉末表面に第２の金属を被覆せしめたことを特徴と
する焼結用複合粉末が提供される。(Means and operations for solving the problem) In order to achieve the above object, according to the first invention, a second metal is applied to the surface of the first metal, its alloy, or its compound powder which is finer than 100 meshes. Provided is a composite powder for sintering characterized by being coated with.
そして、上記第１の本発明の焼結用複合粉末を製造する
ために、第２の本発明によれば、水に可溶もしくは難溶
の有機溶媒に金属塩を溶解せしめてなる金属塩溶液中に
、前記金属とは異種の金属もしくはその合金もしくはそ
の化合物粉末を加えて混合することにより得られた懸濁
液に還元剤水溶液を加えて撹拌しながら前記金属塩を徐
々に還元して前記金属もしくはその合金もしくはその化
合物粉末の表面に析出させ、均一な被膜を形成すること
としたものである。According to the second invention, in order to produce the composite powder for sintering of the first invention, a metal salt solution is prepared by dissolving a metal salt in an organic solvent that is soluble or slightly soluble in water. A reducing agent aqueous solution is added to a suspension obtained by adding and mixing a metal different from the metal, an alloy thereof, or a compound powder thereof, and gradually reducing the metal salt with stirring. It is intended to be deposited on the surface of metal, its alloy, or its compound powder to form a uniform coating.
以下、本発明の製造工程を順を追って説明する。Hereinafter, the manufacturing process of the present invention will be explained step by step.
まず、第１工程では水に可溶もしくは難溶の有機溶媒に
金属塩を溶解せしめて金属塩溶液を調製する。この水に
可溶もしくは難溶の有機溶媒としては、とくに限定され
るものではないが、例えば、トルエン、キシレン、四基
４ｔＪｊ素、 クロｏホルム。First, in the first step, a metal salt solution is prepared by dissolving a metal salt in an organic solvent that is soluble or poorly soluble in water. The organic solvent that is soluble or poorly soluble in water is not particularly limited, but includes, for example, toluene, xylene, 4tJj, and chloroform.
ジクロロエクンなどの置換もしくは非置換炭化水素類、
メタノール、エタノール、ブタノール、ペンタノールな
どのアルコール類、エチルエーテル。substituted or unsubstituted hydrocarbons such as dichloroecune;
Alcohols such as methanol, ethanol, butanol, and pentanol, and ethyl ether.
ジオキサンなどのエーテル類、アセトンなどのケトン類
、酢酸メチルなどのエステル類、ジエチルアミン、ピリ
ジンなどのアミン類などがあげられ、これらの中から１
種または２種以上の混合溶液を使用する。一方、金属塩
は、後段で金属もしくはその合金もしくはその化合物粉
末の表面に析出し被膜となる金属の塩であり、これら金
属もしくはその合金もしくはその化合物粉末とは異種の
金属を選択する。具体的には周期律表のＩＶａ、Ｖａ。Examples include ethers such as dioxane, ketones such as acetone, esters such as methyl acetate, and amines such as diethylamine and pyridine.
Use seeds or a mixed solution of two or more. On the other hand, the metal salt is a metal salt that precipitates on the surface of the metal, its alloy, or its compound powder in a later stage to form a coating, and a metal different from these metals, its alloy, or its compound powder is selected. Specifically, IVa and Va on the periodic table.
■ａ、■ａおよび■族元素を１種または２種以上を含む
金属の塩化物、硫酸塩、硝酸塩などをあげることができ
る。なお、この金属塩が上記有機溶媒に？８解しにくい
場合は、所定時間（例えば１〜３時間）還流を行うこと
が好ましい。Examples include chlorides, sulfates, and nitrates of metals containing one or more of Group (1)a, (2)a, and (2) group elements. By the way, is this metal salt used in the above organic solvent? 8. If it is difficult to dissolve, it is preferable to reflux for a predetermined period of time (for example, 1 to 3 hours).
続く第２工程では、上記により得られた金属塩溶液に、
金属もしくはその合金もしくはその化合物粉末を加えて
前記金属塩溶液中にこの粉末を分散せしめて懸濁液とす
る。このとき、水に可溶もしくは難溶の有機溶媒が分散
剤としてａ能して、粉末の良好な分散状態を保持する。In the subsequent second step, to the metal salt solution obtained above,
A metal, its alloy, or its compound powder is added and the powder is dispersed in the metal salt solution to form a suspension. At this time, the organic solvent that is soluble or slightly soluble in water acts as a dispersant to maintain a good dispersion state of the powder.
金属もしくはその合金もしくはその化合物粉末は本発明
の複合粉末のいわば核となるものであり、その種類はと
くに限定されるものではないが、例えば、Ｆｅ。The metal, its alloy, or its compound powder is the so-called core of the composite powder of the present invention, and its type is not particularly limited, but for example, Fe.
Ｍｏ、Ｗ、Ｔｉ、Ｃｒ、ＡＩ、Ｆｅ−Ｃｒ合金。Mo, W, Ti, Cr, AI, Fe-Cr alloy.
Ｆｅ−Ｎｉステンレス合金、 Ａｈ（ｈ＋Ｔｉｏｔ等の
セラミックスなどを好適なものとしてあげることができ
、その純度は９７％以上であることが好ましい。Suitable examples include Fe--Ni stainless steel alloy, ceramics such as Ah(h+Tiot), and the purity thereof is preferably 97% or more.
さらに、金属もしくはその合金もしくはその化合物粉末
の粒径はとくに制限されないが、通常３００メツシュよ
り微細なものを使用する。Further, the particle size of the metal, its alloy, or its compound powder is not particularly limited, but particles finer than 300 mesh are usually used.
第３工程は還元工程であり、上記により得られた金属も
しくはその合金もしくはその化合物粉末の懸濁液にζ死
刑水溶液を添加し撹拌する。還元剤としては、例えばヒ
ドラジン、水素化ホウ素ナトリウム、ジメチルアミノボ
ラン、ホルマリン、ギ酸、次亜リン酸ナトリウム、酒石
酸塩、ブドウ糖、グリオキザール、グリセリン、過酸化
水素などをあげることができ、これらのうちの１Ｍまた
は２種以上を使用することができる。また、還元剤水溶
液は例えばｐＨ９〜１２に調整しておくことが好ましい
、さらに、反応温度は２５〜９０℃（常温から溶媒の沸
点以下の温度）とすることが好ましい、水に可溶な有機
溶媒に還元剤水溶液を加えると両者はただちに混ざり合
うのではなく、界面で徐々に溶解していくので、このと
き有Ｒ溶媒中に熔解している金属塩は徐々に還元され、
有ｍ溶媒中で良好な分散状態を保っている金属もしくは
その合金もしくはその化合物粉末を核としてその表面に
金属として析出し均一な被膜を形成する。The third step is a reduction step, in which the ζ death penalty aqueous solution is added to the suspension of the metal, its alloy, or its compound powder obtained above and stirred. Examples of the reducing agent include hydrazine, sodium borohydride, dimethylaminoborane, formalin, formic acid, sodium hypophosphite, tartrate, glucose, glyoxal, glycerin, and hydrogen peroxide. 1M or two or more types can be used. In addition, the reducing agent aqueous solution is preferably adjusted to pH 9 to 12, and the reaction temperature is preferably 25 to 90°C (from room temperature to the boiling point of the solvent). When an aqueous reducing agent solution is added to the solvent, the two do not mix immediately, but gradually dissolve at the interface, so the metal salt dissolved in the R-containing solvent is gradually reduced.
The metal, its alloy, or its compound powder, which maintains a good dispersion state in the solvent, is used as a nucleus and is precipitated as a metal on the surface to form a uniform film.
なお、この工程において、金属もしくは合金粉末懸濁液
中に、水に難溶かつ前記水に可溶な有機溶媒に可溶な有
機溶媒、例えばｎ−ヘキサン、シクロヘキサン、トルエ
ン、ベンゼン、トリクロロエタン等を共存せしめておく
と、この還元反応をより緩徐に進行させ、均一な被膜を
形成する上でさらに有効である。又、金属もしくはその
合金もしくはその化合物粉末はその表面に均一な被膜を
形状させるために球状もしくはこれに近似の形状のもの
を使用することが望ましい。In this step, an organic solvent that is sparingly soluble in water and soluble in the water-soluble organic solvent, such as n-hexane, cyclohexane, toluene, benzene, trichloroethane, etc., is added to the metal or alloy powder suspension. If they are allowed to coexist, this reduction reaction will proceed more slowly and it will be more effective to form a uniform film. Further, it is preferable to use a metal, an alloy thereof, or a compound powder thereof having a spherical shape or a shape similar to the spherical shape in order to form a uniform coating on its surface.
大践炭土
塩化ニンケル（ＮｉＣ１，・６Ｈ２Ｑ） ４．７ｇをエ
タノール２５０ｎ Ｒ中に添加し、１時間還流して溶解
させた。4.7 g of NiCl chloride (NiCl, .6H2Q) was added to 250 nR of ethanol and refluxed for 1 hour to dissolve.
この溶液にｎ−へキサン２５０ｍｌおよび３００メツシ
ュの球状鉄粉５０ｇを加えてボールミルで１時間混合し
鉄粉の懸濁液を得た。この懸濁液にｐＨ１１以上に調整
したＩＭのヒドラジン水溶液５００ｍβを加え、温度７
０℃に保持した湯浴中で２時間振とう混合した。これよ
り、金属塩が徐々に還元されて鉄粉表面に析出した。得
られた鉄粉をＥＰＭＡで観察したところ、その表面に均
−且つ強固なＮｉ被膜が形成されていることがｆＩＩ
Ｌ’１された。250 ml of n-hexane and 50 g of 300 mesh spherical iron powder were added to this solution and mixed in a ball mill for 1 hour to obtain a suspension of iron powder. To this suspension, 500 mβ of IM hydrazine aqueous solution adjusted to pH 11 or higher was added, and the temperature was 7.
The mixture was shaken and mixed for 2 hours in a water bath maintained at 0°C. As a result, the metal salt was gradually reduced and deposited on the surface of the iron powder. When the obtained iron powder was observed using EPMA, it was found that a uniform and strong Ni film was formed on its surface.
L'1 was given.
去丘五１
硝酸窯長（Ａ ｇ Ｎ Ｏｚ） ４．０ｇをエタノール
２００ｍ ｅ中に添加し、３時間還流して溶解させた。4.0 g of nitric acid kiln length (AgNOz) was added to 200 mE of ethanol and refluxed for 3 hours to dissolve.
この溶液にベンゼン４００ｍ ｉ及び３４０メツシュの
球状鉄粉５０ｇを加えてボールミルで３時間混合し鉄粉
Ｑｉ液を得た。この懸濁液にアンモニア水でｐＨ１ｏに
調整した０、 １Ｍのホルムアルデヒド水溶ｆｉ２００
ｍｆを加え、常温にて２時間振とう混合した。これによ
り金属塩が徐々に還元され、鉄粉表面に均一な恨が析出
した。To this solution, 400 m i of benzene and 50 g of spherical iron powder of 340 mesh were added and mixed in a ball mill for 3 hours to obtain an iron powder Qi liquid. To this suspension, add 0, 1M formaldehyde solution fi200 adjusted to pH 1o with aqueous ammonia.
mf was added and mixed by shaking at room temperature for 2 hours. As a result, the metal salt was gradually reduced, and a uniform grain was deposited on the surface of the iron powder.
（発明の効果）
以上説明したように第１の本発明の焼結用複合粉末によ
れば、１００メツシュより微細な第１の金属もしくはそ
の合金もしくはその化合物粉末表面に第２の金属を被覆
せしめるようにし、第２の本発明の焼結用複合粉末の製
造法によれば、水に可溶または難溶の有機溶媒に金属塩
を溶解せしめてなる金属塩溶液中に、前記金属とは異種
の金属もしくはその合金もしくはその化合物粉末を加え
て混合することにより得られた懸濁液に還元剤水溶液を
加えて撹拌しながら前記金属塩を徐々に還元して前記金
属もしくはその合金もしくはその化合物粉末の表面に析
出させるようにしたので、金属もしくは合金もしくは化
合物粉末の表面に極めて均一な金属被膜が形成され、２
種以上の金属を物理的に均一に混合したと同一の効果が
得られる。(Effects of the Invention) As explained above, according to the composite powder for sintering of the first invention, the surface of the first metal, its alloy, or its compound powder finer than 100 meshes is coated with the second metal. According to the second method for producing a composite powder for sintering of the present invention, a metal different from the metal is added to a metal salt solution prepared by dissolving a metal salt in an organic solvent that is soluble or hardly soluble in water. A reducing agent aqueous solution is added to the suspension obtained by adding and mixing the metal, its alloy, or its compound powder, and the metal salt is gradually reduced with stirring to obtain the metal, its alloy, or its compound powder. Since the metal is deposited on the surface of the metal, alloy, or compound powder, an extremely uniform metal film is formed on the surface of the metal, alloy, or compound powder.
The same effect can be obtained by physically uniformly mixing more than one metal.
また、このように金属もしくはその合金もしくはその化
合物粉末表面の被膜となる金属の種類を選択することに
より、粉末の耐久性や耐熱性を向上させる等の効果があ
る。In addition, by selecting the type of metal that forms the coating on the surface of the metal, its alloy, or its compound powder, it is possible to improve the durability and heat resistance of the powder.
更に、アルミナ等のセラミックス粉末表面に銀等の金属
で被覆した複合粉末を使用して焼結体を作製すると、こ
の焼結体に電導性を具備させることが出来、又、ＨＩＰ
等で焼結する際にもセラミックス粉末表面に被覆された
金属がバインダーの役割を果たし、焼結性が向上すると
いう種々の優れた効果を奏する。Furthermore, if a sintered body is produced using a composite powder in which the surface of a ceramic powder such as alumina is coated with a metal such as silver, this sintered body can be provided with electrical conductivity.
Even when sintering with ceramic powder, etc., the metal coated on the surface of the ceramic powder plays the role of a binder, and has various excellent effects such as improved sinterability.
Claims (12)
の合金もしくはその化合物粉末表面に第２の金属を被覆
せしめたことを特徴とする焼結用複合粉末。(1) A composite powder for sintering, characterized in that the surface of a first metal, its alloy, or its compound powder finer than 100 mesh is coated with a second metal.
は鉄合金粉末であることを特徴とする特許請求の範囲第
１項記載の焼結用複合粉末。(2) The composite powder for sintering according to claim 1, wherein the first metal or its alloy powder is iron or iron alloy powder.
Ｏ＿３及びＴｉＯ＿２を含む一群から選択されたセラミ
ックス粉末であることを特徴とする特許請求の範囲第１
項記載の焼結用複合粉末。(3) The first metal compound powder is at least Al_2
Claim 1, characterized in that the ceramic powder is selected from a group including O_3 and TiO_2.
Composite powder for sintering as described in section.
VIIａおよびVIII族元素のうちの少なくとも１種を含む
ことを特徴とする特許請求の範囲第１項記載の焼結用複
合粉末。(4) The second metal is IVa, Va, VIa of the periodic table,
The composite powder for sintering according to claim 1, characterized in that it contains at least one of Group VIIa and Group VIII elements.
せしめてなる金属塩溶液中に、前記金属とは異種の金属
もしくはその合金もしくはその化合物粉末を加えて混合
することにより得られた懸濁液に還元剤水溶液を加えて
撹拌しながら前記金属塩を徐々に還元して前記金属もし
くはその合金もしくはその化合物粉末の表面に析出させ
ることを特徴とする焼結用複合粉末の製造法。(5) A metal salt solution obtained by dissolving a metal salt in an organic solvent that is soluble or sparingly soluble in water is mixed with a metal different from the metal, its alloy, or its compound powder. A method for producing a composite powder for sintering, the method comprising adding an aqueous reducing agent solution to the suspension and gradually reducing the metal salt while stirring to precipitate it on the surface of the metal, its alloy, or its compound powder. .
末であることを特徴とする特許請求の範囲第５項記載の
焼結用複合粉末の製造法。(6) The method for producing a composite powder for sintering according to claim 5, wherein the metal or alloy powder is iron or iron alloy powder.
及びＴｉＯ＿２を含む一群から選択されたセラミックス
粉末であることを特徴とする特許請求の範囲第５項記載
の焼結用複合粉末の製造方法。(7) The metal compound powder is at least Al_2O_3
6. The method for producing a composite powder for sintering according to claim 5, wherein the ceramic powder is selected from a group including TiO_2 and TiO_2.
ａおよびVIII族元素のうちの少なくとも１種を含む塩で
あることを特徴とする特許請求の範囲第５項記載の焼結
用複合粉末の製造方法。(8) The metal salts are IVa, Va, VIa, and VII of the periodic table.
6. The method for producing a composite powder for sintering according to claim 5, wherein the salt is a salt containing at least one of group a and group VIII elements.
くは非置換炭化水素類、アルコール類、エーテル類、ケ
トン類、エステル類およびアミン類の中から選ばれた少
なくとも１種又は２種以上の混合溶液であることを特徴
とする特許請求の範囲第５項記載の焼結用複合粉末の製
造方法。(9) The organic solvent soluble or sparingly soluble in water is at least one or more selected from substituted or unsubstituted hydrocarbons, alcohols, ethers, ketones, esters, and amines. 6. The method for producing a composite powder for sintering according to claim 5, wherein the mixed solution is a mixed solution of:
ウム、ジメチルアミノボラン、ホルマリン、ギ酸、次亜
リン酸ナトリウム、酒石酸塩、ブドウ糖、グリオキザー
ル、グリセリン、および過酸化水素の中から選ばれた少
なくとも１種であることを特徴とする特許請求の範囲第
５項記載の焼結用複合粉末の製造方法。(10) The reducing agent is at least one selected from hydrazine, sodium borohydride, dimethylaminoborane, formalin, formic acid, sodium hypophosphite, tartrate, glucose, glyoxal, glycerin, and hydrogen peroxide. A method for producing a composite powder for sintering according to claim 5, characterized in that:
てなる金属塩溶液中に前記金属もしくはその合金もしく
はその化合物粉末を加える際に、水に難溶でかつ前記有
機溶媒に可溶の有機溶媒を同時に添加することを特徴と
する特許請求の範囲第５項記載の焼結用複合粉末の製造
方法。(11) When adding the metal, its alloy, or its compound powder to the metal salt solution prepared by dissolving the metal salt in the water-soluble organic solvent, the metal is sparingly soluble in water and soluble in the organic solvent. 6. The method for producing a composite powder for sintering according to claim 5, characterized in that an organic solvent is added at the same time.
溶媒は、少なくともｎ−ヘキサン、シクロヘキサン、ト
ルエン、ベンゼン、トリクロロエタンを含む一群から選
択された少なくとも１種であることを特徴とする特許請
求の範囲第１１項記載の焼結用複合粉末の製造法。(12) The organic solvent that is sparingly soluble in water and soluble in the organic solvent is at least one selected from the group consisting of n-hexane, cyclohexane, toluene, benzene, and trichloroethane. A method for producing a composite powder for sintering according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61210753A JPS6369901A (en) | 1986-09-09 | 1986-09-09 | Composite powder for sintering and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61210753A JPS6369901A (en) | 1986-09-09 | 1986-09-09 | Composite powder for sintering and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6369901A true JPS6369901A (en) | 1988-03-30 |
Family
ID=16594554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61210753A Pending JPS6369901A (en) | 1986-09-09 | 1986-09-09 | Composite powder for sintering and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6369901A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0649651A (en) * | 1992-06-29 | 1994-02-22 | Nippon Alum Co Ltd | Method for coating inorganic fine powder surface with metal |
| US5505902A (en) * | 1994-03-29 | 1996-04-09 | Sandvik Ab | Method of making metal composite materials |
| US5887242A (en) * | 1995-09-29 | 1999-03-23 | Sandvik Ab | Method of making metal composite materials |
-
1986
- 1986-09-09 JP JP61210753A patent/JPS6369901A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0649651A (en) * | 1992-06-29 | 1994-02-22 | Nippon Alum Co Ltd | Method for coating inorganic fine powder surface with metal |
| US5505902A (en) * | 1994-03-29 | 1996-04-09 | Sandvik Ab | Method of making metal composite materials |
| CN1070746C (en) * | 1994-03-29 | 2001-09-12 | 桑德维克公司 | Method of making metal composite materials |
| US5887242A (en) * | 1995-09-29 | 1999-03-23 | Sandvik Ab | Method of making metal composite materials |
| CN1072540C (en) * | 1995-09-29 | 2001-10-10 | 桑德维克公司 | Method of making metal composite materials |
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