JPS6045681B2 - Method for producing ferromagnetic metal powder - Google Patents
Method for producing ferromagnetic metal powderInfo
- Publication number
- JPS6045681B2 JPS6045681B2 JP57152753A JP15275382A JPS6045681B2 JP S6045681 B2 JPS6045681 B2 JP S6045681B2 JP 57152753 A JP57152753 A JP 57152753A JP 15275382 A JP15275382 A JP 15275382A JP S6045681 B2 JPS6045681 B2 JP S6045681B2
- Authority
- JP
- Japan
- Prior art keywords
- metal powder
- ferromagnetic metal
- producing
- producing ferromagnetic
- solution
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
Description
【発明の詳細な説明】
本発明は、鉄を主体とする強磁性金属粉末の製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing ferromagnetic metal powder mainly composed of iron.
すなわち、本発明の特徴とするところは、鉄を主体とし
て含む金属化合物を還元性雰囲気中て加熱することによ
り鉄を主体とする強磁性金属粉を製造する周知の方法に
おいて、前記金属化合物をあらかじめ２５００Ｃ以上の
沸点を有する有機シラン化合物の溶液に浸漬することに
あり、これにより磁気特性のすぐれた金属粉を得ること
ができる。That is, the feature of the present invention is that in the well-known method of producing ferromagnetic metal powder mainly consisting of iron by heating a metal compound mainly containing iron in a reducing atmosphere, the metal compound is heated in a reducing atmosphere. The method involves immersing the metal powder in a solution of an organic silane compound having a boiling point of 2500 C or more, thereby making it possible to obtain metal powder with excellent magnetic properties.
また、上記金属化合物の代表的なものは鉄の酸化物また
は酸水酸化物であるが、その他ニッケルやコバルトのご
とき金属の化合物が含まれる場合もある。シラン化合物
溶液とＡｇ″′溶液に浸漬することにより、さらに磁気
特性のすぐれた金属粉が得られる。用いる有機シラン化
合物の溶液およびＡｇ”の溶液は、非常に希薄な溶液で
十分な効果を発揮する。加熱還元の雰囲気は、Ｈ２、Ｃ
ｏなどの還元性ガスを含む雰囲気であればいずれでもよ
いが、Ｈｏと都市ガスが容易に入手できるので特に好ま
しい。Further, typical examples of the metal compounds are iron oxides or acid hydroxides, but compounds of other metals such as nickel and cobalt may also be included. Metal powder with even better magnetic properties can be obtained by immersing it in a silane compound solution and an Ag'' solution.The organic silane compound solution and Ag'' solution used can exhibit sufficient effects even if they are very dilute solutions. do. The atmosphere for heating reduction is H2, C
Any atmosphere may be used as long as it contains a reducing gas such as Ho, but Ho and city gas are particularly preferred since they are easily available.
還元温度は２５０〜５０００Ｃが好ましい。The reduction temperature is preferably 250 to 5000C.
２５０℃以下では還元が不十分てあり、５０００Ｃ以上
では粒子が互いに焼結してしまう。At temperatures below 250°C, the reduction is insufficient, and at temperatures above 5000C, the particles will sinter with each other.
また、還元終了後は表面に酸化物層を形成して金属粒子
の表面を不活性にすることが望ましい。なお、磁気特性
は磁気履歴曲線測定器を用いて、最高磁場２０００Ｏｅ
の磁場中で測定した。Further, after completion of the reduction, it is desirable to form an oxide layer on the surface to make the surface of the metal particle inactive. The magnetic properties were measured using a magnetic hysteresis curve measuring device at a maximum magnetic field of 2000 Oe.
Measured in a magnetic field of
以下、本発明を実施例によつて説明する。実施例 １
針状γ−Ｆｅ２Ｏ３１０、Ｏｙを、第１表に示した有機
シラン化合物を第１表に示した溶媒に溶かした溶ノ液（
濃度２．５ｙ／ｌ）４００７７！ｌ中に入れ、１時間攪
拌した。Hereinafter, the present invention will be explained with reference to Examples. Example 1 Acicular γ-Fe2O310, Oy was prepared by dissolving the organosilane compounds shown in Table 1 in the solvents shown in Table 1.
Concentration 2.5y/l) 40077! and stirred for 1 hour.
Claims (1)
加熱することにより、鉄を主体として含む強磁性金属粉
を製造する方法において、前記金属化合物をあらかじめ
２５０℃以上の沸点を有する有機シラン化合物の溶液に
浸漬する工程を含むことを特徴とする強磁性金属粉末の
製造方法。1. In a method for producing a ferromagnetic metal powder containing mainly iron by heating a metal compound containing mainly iron in a reducing atmosphere, the metal compound is preheated to an organic silane compound having a boiling point of 250°C or higher. A method for producing ferromagnetic metal powder, the method comprising the step of immersing it in a solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57152753A JPS6045681B2 (en) | 1982-09-03 | 1982-09-03 | Method for producing ferromagnetic metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57152753A JPS6045681B2 (en) | 1982-09-03 | 1982-09-03 | Method for producing ferromagnetic metal powder |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50106917A Division JPS6017802B2 (en) | 1975-09-05 | 1975-09-05 | Method for producing ferromagnetic metal powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58113305A JPS58113305A (en) | 1983-07-06 |
| JPS6045681B2 true JPS6045681B2 (en) | 1985-10-11 |
Family
ID=15547409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57152753A Expired JPS6045681B2 (en) | 1982-09-03 | 1982-09-03 | Method for producing ferromagnetic metal powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045681B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6161404A (en) * | 1984-08-31 | 1986-03-29 | Sony Corp | Manufacture of magnetic metal powder |
| CN113416903B (en) * | 2021-07-06 | 2022-01-25 | 内蒙古师范大学 | Application of alloy powder, hard magnetic material and preparation method and application thereof |
-
1982
- 1982-09-03 JP JP57152753A patent/JPS6045681B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58113305A (en) | 1983-07-06 |
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