CN1468655A - Synthesis of synthetic rod for diamond in six-plane piercer - Google Patents
Synthesis of synthetic rod for diamond in six-plane piercer Download PDFInfo
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- CN1468655A CN1468655A CNA031245668A CN03124566A CN1468655A CN 1468655 A CN1468655 A CN 1468655A CN A031245668 A CNA031245668 A CN A031245668A CN 03124566 A CN03124566 A CN 03124566A CN 1468655 A CN1468655 A CN 1468655A
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Abstract
The synthesizing rod used in six-plane piercer to synthesizing diamond includes catalyst sheets in 0.1-0.25 mm thickness and carbon sheets in 0.5-0.75 mm thickness laminated alternately. It is suitable for forming nuclei and growing of diamond homogeneously, and the formed diamond is symmetrical, perfect in crystal form, high in transparency, high in static pressure strength and high in grade. The present invention can raise the grade and yield of diamond, save noble metal for catalyst and raise the utilization of the catalyst sheets and carbon sheets.
Description
Technical field:
The present invention relates to a kind of cubic hinge press diamond synthesis synthetic rod.
Background technology:
Since the last century the nineties, the catalyst sheet thickness that the cubic hinge press diamond synthesis adopts with synthetic rod is just always between 0.4～0.6mm, carbon plate is between 1～1.2mm, catalyst sheet and carbon plate are all thicker, and adamantine nucleating growth carries out on the catalyst sheet surface, therefore catalyst sheet is in thicker situation, catalysis can not be played in the intermediate layer, in other words, it is zero that the carbon atom that is diffused into the catalyst sheet intermediate layer is close to respect to the carbon atom that is diffused into the catalyst sheet superficial layer, carbon source is restricted to the direction of the supply of nucleus, thereby the diamond symmetry of growth is relatively poor, grade is lower.And for single synthetic rod, catalyst sheet and carbon plate are thick to mean that installation group number is few, and single rod yields poorly.So prior art is that diamond grade or single excellent output all never significantly improve since the last century the nineties.The synthetic rod interlude generally all is hollow in addition, and a bit of in the middle of that is to say do not have diamond to generate basically, and so expensive catalyst does not play catalysis at this, is a waste really.
Summary of the invention:
The invention provides a kind of can significantly improve diamond grade and single excellent output be used for cubic hinge press diamond synthesis synthetic rod.
The present invention includes catalyst sheet and carbon plate that intersecting is installed, catalyst sheet thickness is 0.1～0.25mm, and carbon plate thickness is 0.5～0.75mm.
For saving the catalyst consumption, 0～5 catalyst of the middle section of synthetic rod substitutes with non-catalyst metal sheet.
Described non-catalyst metal is Fe and alloy or Cu and alloy thereof.
Because the thickness of the catalyst sheet 0.1～0.25mm in the synthetic rod of the present invention far is thinner than the thickness of 0.4～0.6mm in the prior art, make whole catalyst all can participate in the diamond building-up process, be that equal " molten " has carbon atom in whole catalyst, carbon atom is separated out in the adamantine process under the effect of fusion catalyst, carbon source is similar to three-dimensional to the supply of nucleus, make carbon atom free equal to diamond cube cancellated distance and time, be very beneficial for diamond homogeneous nucleation and growth, make the diamond symmetry of growth good, complete in crystal formation, the transparency height, anti-isostatic pressing strength is big, the grade height.In addition because after the thickness attenuation of catalyst sheet that synthetic rod of the present invention is used and carbon plate, the utilization rate of the two is improved greatly, especially the consumption of catalyst material will obviously reduce, and the group digital display work that synthetic rod is installed increases, be that the gross area that carbon plate contacts with catalyst enlarges markedly, its result is significantly improving of single excellent output naturally.Therefore the present invention has not only significantly improved adamantine grade and single excellent output, has also effectively saved the noble metal that is used for catalyst, has improved the utilization rate of catalyst sheet and carbon plate.
The specific embodiment:
Present embodiment is that internal diameter is the synthetic rod of Φ 38mm, synthesis device is a Φ 460mm cylinder diameter cubic hinge press, its catalyst thickness is 0.18mm, carbon plate thickness is 0.68mm, their intersectings are loaded in the synthetic rod cavity, can adorn 34 groups, single excellent output can reach 49 carats, the ratio of the anti-isostatic pressing strength 〉=12kg of diamond that generates reaches 53%, and the use catalyst material only is 40.95 grams.If but with the synthetic rod cavity of same diameter, load onto prior art catalyst (thickness is 0.4mm) and carbon plate (1.0mm), can only adorn 22 groups, 38 carats of per unit area yields, the ratio of the anti-isostatic pressing strength＞12kg of diamond of generation only accounts for 39.8%, and the catalyst material weight of using is up to 70 grams, two compare present embodiment than 14 carats of the relative raisings of the single excellent output of prior art, promptly improve 28.9%, save catalyst consumption 29.05 grams, promptly save 41.5%.
Another embodiment of the invention is: in a last embodiment, the interlude of the synthetic rod non-catalyst Fe of 1-3 sheet or Fe alloy sheet, Cu or Cu alloy sheet, substitute catalyst sheet, its single excellent output and last embodiment do not have difference substantially as a result, but can save 3～5 contacts, this is because the interlude of synthetic rod generally all produces and hollowly promptly can not produce diamond, reaches the purpose that passes warm pressure transmission as long as therefore substitute catalyst sheet with non-catalyst metal sheet.
Other several embodiments of the present invention still is that the synthetic rod of Φ 38mm is an example with the internal diameter, and within the scope of the present invention, the related parameter that has that the carbon plate that is adopted, catalyst sheet and above-mentioned embodiment are addressed is all listed in following table, please see the following form:
| Sequence number | Catalyst sheet is thick | Carbon plate is thick | Installation group number | Single excellent output | Product isostatic pressing strength 〉=12kg ratio |
| ????1 | ????0.14 | ????0.60 | ????38 | ????55 | ????51.7％ |
| ????2 | ????0.22 | ????0.68 | ????32 | ????46 | ????50.9％ |
| ????3 | ????0.18 | ????0.60 | ????36 | ????52 | ????52.8％ |
Claims (7)
1, a kind of cubic hinge press diamond synthesis synthetic rod comprises catalyst sheet and carbon plate, it is characterized in that: the catalyst sheet thickness that intersecting is installed is 0.1～0.25mm, and carbon plate thickness is 0.5～0.75mm.
2, cubic hinge press diamond synthesis synthetic rod according to claim 1, it is characterized in that: catalyst sheet thickness is 0.18mm, carbon plate thickness is 0.68mm.
3, cubic hinge press diamond synthesis synthetic rod according to claim 1, it is characterized in that: catalyst sheet thickness is 0.14mm, carbon plate thickness is 0.60mm.
4, cubic hinge press diamond synthesis synthetic rod according to claim 1, it is characterized in that: catalyst sheet thickness is 0.22mm, carbon plate thickness is 0.68mm.
5, cubic hinge press diamond synthesis synthetic rod according to claim 1, it is characterized in that: catalyst sheet thickness is 0.18mm, carbon plate thickness is 0.60mm.
6, want 1 described cubic hinge press diamond synthesis synthetic rod according to right, it is characterized in that: the middle section of synthetic rod also is equipped with 0～5 of non-catalyst metal sheet, and this sheet metal and carbon plate intersecting are installed.
7, cubic hinge press diamond synthesis synthetic rod according to claim 6, it is characterized in that: described non-catalyst metal is Fe and alloy thereof, Cu and alloy thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031245668A CN1468655A (en) | 2003-06-20 | 2003-06-20 | Synthesis of synthetic rod for diamond in six-plane piercer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031245668A CN1468655A (en) | 2003-06-20 | 2003-06-20 | Synthesis of synthetic rod for diamond in six-plane piercer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1468655A true CN1468655A (en) | 2004-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031245668A Pending CN1468655A (en) | 2003-06-20 | 2003-06-20 | Synthesis of synthetic rod for diamond in six-plane piercer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1468655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108144554A (en) * | 2017-12-04 | 2018-06-12 | 郑州中南杰特超硬材料有限公司 | A kind of manufacture craft of novel diamond synthesis column |
-
2003
- 2003-06-20 CN CNA031245668A patent/CN1468655A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108144554A (en) * | 2017-12-04 | 2018-06-12 | 郑州中南杰特超硬材料有限公司 | A kind of manufacture craft of novel diamond synthesis column |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |