EA201600621A1 - METHOD OF OBTAINING POLYCRYSTALLINE ULTRAHTERD MATERIAL BASED ON DIAMONDS - Google Patents
METHOD OF OBTAINING POLYCRYSTALLINE ULTRAHTERD MATERIAL BASED ON DIAMONDSInfo
- Publication number
- EA201600621A1 EA201600621A1 EA201600621A EA201600621A EA201600621A1 EA 201600621 A1 EA201600621 A1 EA 201600621A1 EA 201600621 A EA201600621 A EA 201600621A EA 201600621 A EA201600621 A EA 201600621A EA 201600621 A1 EA201600621 A1 EA 201600621A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- mixture
- powder
- boron nitride
- diamonds
- diamond
- Prior art date
Links
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Ceramic Products (AREA)
Abstract
Изобретение относится к области получения поликристаллических сверхтвердых материалов на основе алмазов, предназначенных для изготовления правящего, бурового и формообразующего инструмента. Способ включает приготовление шихты на основе зерен порошков алмаза и кубического нитрида бора и спекание шихты в условиях высоких давлений и температур, при этом согласно изобретению в качестве алмазного порошка берут порошок импактных алмазов с размером зерен в пределах 10-1000 мкм и порошок кубического нитрида бора с размером зерен в пределах 0,5-20 мкм, массовое соотношение порошков алмаза к кубическому нитриду бора в шихте находится в пределах от 1:1 до 5:1, а спекание шихты при высоких давлениях и температурах осуществляют в диапазоне давлений 5,0-6,0 ГПа при температуре 1850-2100°C в течение 25-60 с. Для снижения хрупкости и улучшения спекаемости материала в шихту из порошков алмаза и кубического нитрида бора вводят добавки порошка вюрцитного BN в количестве 1-10 мас.%, аморфного бора в количестве 0,5 -1,5 мас.% и/или порошка алюминия в количестве 1-5 мас.%.The invention relates to the field of polycrystalline superhard materials based on diamonds, intended for the manufacture of ruling, drilling and shaping tools. The method includes the preparation of the mixture on the basis of grains of diamond powders and cubic boron nitride and sintering the mixture under conditions of high pressures and temperatures, according to the invention, powder of impact diamonds with a grain size in the range of 10-1000 microns and cubic boron nitride powder are taken as diamond powder grain size in the range of 0.5-20 microns, the mass ratio of diamond powders to cubic boron nitride in the mixture is in the range from 1: 1 to 5: 1, and sintering the mixture at high pressures and temperatures is carried out in the pressure range Nij 5.0-6.0 GPa at a temperature of 1850-2100 ° C for 25-60 s. To reduce brittleness and improve the baking of the material, additives of wurtzite BN powder in an amount of 1-10 wt.%, Amorphous boron in an amount of 0.5-1.5 wt.% And / or aluminum powder are introduced into the mixture of powders of diamond and cubic boron nitride. the amount of 1-5 wt.%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA201600621A EA030654B1 (en) | 2016-08-09 | 2016-08-09 | Method for production of a diamond-based superhard polycrystalline material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA201600621A EA030654B1 (en) | 2016-08-09 | 2016-08-09 | Method for production of a diamond-based superhard polycrystalline material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA201600621A1 true EA201600621A1 (en) | 2018-02-28 |
| EA030654B1 EA030654B1 (en) | 2018-09-28 |
Family
ID=61244298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA201600621A EA030654B1 (en) | 2016-08-09 | 2016-08-09 | Method for production of a diamond-based superhard polycrystalline material |
Country Status (1)
| Country | Link |
|---|---|
| EA (1) | EA030654B1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7172745B1 (en) * | 2003-07-25 | 2007-02-06 | Chien-Min Sung | Synthesis of diamond particles in a metal matrix |
| RU2484888C1 (en) * | 2011-12-27 | 2013-06-20 | Открытое акционерное общество "Научно-исследовательский институт природных, синтетических алмазов и инструмента" (ОАО "ВНИИАЛМАЗ") | Method of making polycrystalline material based on cubic boron nitride containing diamonds |
-
2016
- 2016-08-09 EA EA201600621A patent/EA030654B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EA030654B1 (en) | 2018-09-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ KZ KG TJ TM RU |