CN101024156A - Carbonizing-body diamond catalyst and preparing method - Google Patents
Carbonizing-body diamond catalyst and preparing method Download PDFInfo
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- CN101024156A CN101024156A CN 200710013221 CN200710013221A CN101024156A CN 101024156 A CN101024156 A CN 101024156A CN 200710013221 CN200710013221 CN 200710013221 CN 200710013221 A CN200710013221 A CN 200710013221A CN 101024156 A CN101024156 A CN 101024156A
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- cementite
- diamond
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- graphite
- iron
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Abstract
This invention relates to a diamond shape carburizing catalyst and preparation methods, by weight of each component in terms of cementite 38-69, iron 26-41, nickel 5-15, and graphite 1-8.4. The preparation method of synthetic diamond shape carburizing catalyst: A. the powder of carburization, iron, nickel powder, and graphite mixed uniform drying the damp according to the aforementioned weight; B. Mixed powder cold molding remaining in the 620-pressure; C. shaping, surface cleaning, removing dirt. This invention used cementite, iron, nickel and graphite as a catalyst to compose synthetic diamond, can provide a lot of cementite in the process of synthesis to supplement the consumed cementite in the diamond growth process, thereby diamond formation and growth continue to be maintained, in order to provide material source of obtaining high-grade, high-yield, the big diamond particles.
Description
Technical field
The present invention relates to metal material field, especially for carbonizing-body diamond catalyst that synthesizes high-grade, bulky diamond monocrystalline and preparation method thereof.
Background technology
We know that graphitic carbon and diamond are respectively the different expression forms of carbon, belong to the isomer of carbon.Artificially synthesizing diamond, its essence is exactly under manual intervention, the graphite of carbon is constructed be transformed into the diamond structure.669 pages of 2002 " Science Bulletin " the 47th the 9th phases of volume have delivered people such as Xu Bin and have been entitled as " growth of the structure of metal coating and Fe base catalyst diamond synthesis " achievement in research, found transformational relation between graphitic carbon, cementite and the diamond from microstructure in the literary composition, proved by graphitic carbon to be transformed into the process that rearranges that diamond is not a simple carbon atom, but needed through a series of intermediate link.Wherein, the γ of cementite in catalyst-(Fe, under attraction Ni), with carbon atom group with the intermediate structure of sheet form from Fe
3Precipitation among the C, last, this carbon atom group is stacked on the diamond plane surface.Obviously, as the raw material of diamond synthesis, cementite is compared with graphite, and cementite is more near the adamantine raw material of final products.
For a long time, extensively adopt catalyst metal to add the graphite diamond synthesis both at home and abroad, in this process, though also can produce cementite, but along with growth of diamond, to produce a large amount of consumption to cementite, owing to due to physics, chemistry and the metallurgy environment in the reaction melt, be can not get replenishing by the used up cementite of growth of diamond, therefore, adamantine continuation forms and grows for want of cementite and stagnate, so the diamond grade of produced in conventional processes is low, granularity is little.
Summary of the invention
The present invention provides a kind of cost low for overcoming above-mentioned the deficiencies in the prior art, and production technology is simple, can ensure carbonizing-body diamond catalyst of the cementite that diamond film is required and preparation method thereof.
The objective of the invention is to adopt following technical proposals to realize: a kind of carbonizing-body diamond catalyst, each component by weight, cementite 38-75 part, iron 26-41 part, nickel 5-15 part, graphite 1-8.4 part.
Each component by weight, 48 parts of cementites, 40 parts of iron, 7 parts in nickel, 5 parts in graphite.
The preparation method of carbonizing-body diamond catalyst:
A. cementite powder, iron powder, nickel powder, graphite powder are mixed by aforementioned weight, moisture is removed in oven dry;
B. be sheet with mixed powder cold moudling under 620-750MPa pressure;
C. shaping, removing surface, remove crude removal.
The present invention adopts cementite, iron, nickel and graphite as the diamond synthesis catalyst, a large amount of cementites can be provided in building-up process, to replenish diamond used up cementite in growth course, be maintained thereby make diamond continue to form and grow, for acquisition high-grade, high yield, bulky diamond monocrystalline provide the material source.
Description of drawings
The diamond scanning mirror image pattern that accompanying drawing utilizes the present invention to produce as catalyst for embodiment 1.
The specific embodiment
Embodiment 1: each component by weight, 38 parts of cementites, 26 parts of iron, 5 parts in nickel, 1 part in graphite.
The preparation method:
A. cementite powder, iron powder, nickel powder, graphite powder are mixed by aforementioned weight, moisture is removed in oven dry;
B. be sheet with mixed powder cold moudling under 620MPa pressure;
C. shaping, removing surface, remove crude removal.
With the diamond of above-mentioned Catalyst Production as shown in drawings.
Embodiment 2: each component by weight, 48 parts of cementites, 40 parts of iron, 7 parts in nickel, 5 parts in graphite.
The preparation method:
A. cementite powder, iron powder, nickel powder, graphite powder are mixed by aforementioned weight, moisture is removed in oven dry;
B. be sheet with mixed powder cold moudling under 680MPa pressure;
C. shaping, removing surface, remove crude removal.
Embodiment 3: each component by weight, 56 parts of cementites, 35 parts of iron, 10 parts in nickel, 6 parts in graphite.
The preparation method:
A. cementite powder, iron powder, nickel powder, graphite powder are mixed by aforementioned weight, moisture is removed in oven dry;
B. be sheet with mixed powder cold moudling under 700MPa pressure;
C. shaping, removing surface, remove crude removal.
Embodiment 4: be equipped with component by weight, 75 parts of cementites, 41 parts of iron, 15 parts in nickel, 8.4 parts in graphite.
The preparation method:
A. cementite powder, iron powder, nickel powder, graphite powder are mixed by aforementioned weight, moisture is removed in oven dry;
B. be sheet with mixed powder cold moudling under 750MPa pressure;
C. shaping, removing surface, remove crude removal.
Claims (3)
1. carbonizing-body diamond catalyst is characterized in that: each component by weight, cementite 38-75 part, iron 26-41 part, nickel 5-15 part, graphite 1-8.4 part.
2. a kind of carbonizing-body diamond catalyst according to claim 1 is characterized in that: each component by weight, 48 parts of cementites, 40 parts of iron, 7 parts in nickel, 5 parts in graphite.
3. the preparation method of a kind of carbonizing-body diamond catalyst according to claim 1 and 2, it is characterized in that: A. mixes cementite powder, iron powder, nickel powder, graphite powder by aforementioned weight, and moisture is removed in oven dry;
B. be sheet with mixed powder cold moudling under 620-750MPa pressure;
C. shaping, removing surface, remove crude removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100132212A CN100396371C (en) | 2007-01-16 | 2007-01-16 | Carbonizing-body diamond catalyst and preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100132212A CN100396371C (en) | 2007-01-16 | 2007-01-16 | Carbonizing-body diamond catalyst and preparing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101024156A true CN101024156A (en) | 2007-08-29 |
| CN100396371C CN100396371C (en) | 2008-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100132212A Expired - Fee Related CN100396371C (en) | 2007-01-16 | 2007-01-16 | Carbonizing-body diamond catalyst and preparing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN100396371C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772144A (en) * | 2015-03-24 | 2015-07-15 | 河南黄河旋风股份有限公司 | Carbon fiber containing diamond catalyst powder and making method |
| CN106270484A (en) * | 2016-08-18 | 2017-01-04 | 中南钻石有限公司 | A kind of preparation method of diamond synthesis graphite stem stem |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02233511A (en) * | 1989-03-08 | 1990-09-17 | Honda Motor Co Ltd | Production of diamond |
| CN1109577C (en) * | 2000-01-31 | 2003-05-28 | 山东工业大学 | Iron-base alloy catalyst and its preparing method |
| CN1182913C (en) * | 2003-01-14 | 2005-01-05 | 湖南三一新材料有限公司 | Ferrous-nickel base catalyst alloy for synthesizing artificial diamond |
| JP5254011B2 (en) * | 2005-05-31 | 2013-08-07 | エレメント シックス （プロダクション）（プロプライエタリィ） リミテッド | Method for coating diamond seed crystals |
-
2007
- 2007-01-16 CN CNB2007100132212A patent/CN100396371C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772144A (en) * | 2015-03-24 | 2015-07-15 | 河南黄河旋风股份有限公司 | Carbon fiber containing diamond catalyst powder and making method |
| CN106270484A (en) * | 2016-08-18 | 2017-01-04 | 中南钻石有限公司 | A kind of preparation method of diamond synthesis graphite stem stem |
| CN106270484B (en) * | 2016-08-18 | 2019-01-15 | 中南钻石有限公司 | A kind of diamond synthesis preparation method of graphite stem |
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| Publication number | Publication date |
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| CN100396371C (en) | 2008-06-25 |
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Granted publication date: 20080625 Termination date: 20120116 |