JPS6436706A - Production of magnetized metal superfine powder - Google Patents
Production of magnetized metal superfine powderInfo
- Publication number
- JPS6436706A JPS6436706A JP19029487A JP19029487A JPS6436706A JP S6436706 A JPS6436706 A JP S6436706A JP 19029487 A JP19029487 A JP 19029487A JP 19029487 A JP19029487 A JP 19029487A JP S6436706 A JPS6436706 A JP S6436706A
- Authority
- JP
- Japan
- Prior art keywords
- superfine powder
- magnetized metal
- reduced
- reaction
- gas
- 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
Abstract
PURPOSE:To avoid large-scaled apparatus, to reduce gas consumption and to produce a product having suitable size to high density magnetic recorder by reacting reaction gas under the specific reduced metal superfine powder by gas phase chemical reaction method. CONSTITUTION:At the time of producing the magnetized metal superfine powder by chemical-reacting vapor of one or more kinds of the magnetized metal compounds, the reaction gas is reacted under the reduced pressure at 50-600Torr. By this method, the gas consumption for obtaining the magnetized metal superfine powder having the specific particle size can be reduced. Further, rapid cooling is easily executed and particle growth of the magnetized metal superfine powder is effectively restrained. In the case of <50Torr the reaction pressure, the diffusion speed of the magnetized metal compound is to fast, and the deposit stuck to the furnace wall face is increased. On the other hand, in the case of >800Torr the reaction pressure, the gas consumption can be reduced only by a little, compared with increasing cost of the apparatus for obtaining reducing pressure and control of particle size of the superfine powder is not so facilitated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19029487A JPS6436706A (en) | 1987-07-31 | 1987-07-31 | Production of magnetized metal superfine powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19029487A JPS6436706A (en) | 1987-07-31 | 1987-07-31 | Production of magnetized metal superfine powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6436706A true JPS6436706A (en) | 1989-02-07 |
Family
ID=16255776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19029487A Pending JPS6436706A (en) | 1987-07-31 | 1987-07-31 | Production of magnetized metal superfine powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6436706A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172923A (en) * | 1991-04-08 | 1992-12-22 | Kabushiki Kaisha Delta | Tool chuck |
| WO2000074881A1 (en) * | 1999-06-08 | 2000-12-14 | Toho Titanium Co., Ltd. | Method for preparing ultra fine nickel powder |
| JP2008511748A (en) * | 2004-09-03 | 2008-04-17 | シーブイアールディ、インコ、リミテッド | Method for producing metal powder |
-
1987
- 1987-07-31 JP JP19029487A patent/JPS6436706A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172923A (en) * | 1991-04-08 | 1992-12-22 | Kabushiki Kaisha Delta | Tool chuck |
| WO2000074881A1 (en) * | 1999-06-08 | 2000-12-14 | Toho Titanium Co., Ltd. | Method for preparing ultra fine nickel powder |
| US6500227B1 (en) | 1999-06-08 | 2002-12-31 | Toho Titanium Co., Ltd. | Process for production of ultrafine nickel powder |
| JP2008511748A (en) * | 2004-09-03 | 2008-04-17 | シーブイアールディ、インコ、リミテッド | Method for producing metal powder |
| JP4932718B2 (en) * | 2004-09-03 | 2012-05-16 | ヴァーレ、インコ、リミテッド | Method for producing metal powder |
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