CN104531069A - Superhard material particle/titanium-aluminum composite particle having core-shell structure and preparation method thereof - Google Patents
Superhard material particle/titanium-aluminum composite particle having core-shell structure and preparation method thereof Download PDFInfo
- Publication number
- CN104531069A CN104531069A CN201410816419.4A CN201410816419A CN104531069A CN 104531069 A CN104531069 A CN 104531069A CN 201410816419 A CN201410816419 A CN 201410816419A CN 104531069 A CN104531069 A CN 104531069A
- Authority
- CN
- China
- Prior art keywords
- superhard material
- material particle
- composite particles
- titanium
- particle
- 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
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention belongs to the technical field of the preparation of superhard materials and particularly relates to a superhard material particle/titanium-aluminum composite particle having a core-shell structure and a preparation method thereof. According to the composite particle, the superhard material particle is adopted as an inner core and the titanium-aluminum composite material is adopted as a coating layer; the coating layer accounts for 30-50% of mass of the composite particle. By an SHS technology, the novel superhard material particle/titanium-aluminum composite particle having the core-shell structure is synthesized, the preparation method has the advantages of time conservation, simplicity in device, high production efficiency, low cost and like, the energy source is sufficiently utilized, large-size products can be produced and the preparation method has enormous economic and social benefits.
Description
Technical field
The invention belongs to superhard material preparing technical field, particularly a kind of superhard material particle/titanium aluminium nucleocapsid structure composite particles and preparation method thereof.
Background technology
Superhard material grinding tool material, refers to superhard material if diamond, cubic boron nitride or norbide are as abrasive material, the general name of the material with certain geometrical shape that bondd with various different bonding agent.Diamond composite is widely used in the every field such as geological prospecting, stone material, machinery, automobile and national defense industry, and product has formed seriation, and description is more complete.But because superhard material abrasive particle has larger inertia, not easily be combined with bonding agent, poor with bonding agent interfacial activity, be mainly physical bond, therefore when superhard material grinding tool grinding work piece, superhard material abrasive particle easily comes off too early, does not give full play to its ablation, thus reduces the work-ing life of abrasive material utilization ratio and grinding tool.Unordered and the widespread use limiting superhard material grinding tool material removal processing technology that comes off too early of abrasive particle.
In order to improve the bonding strength of diamond and ceramic bond, the normal method adopted is that diamond surface is by physics or some carbide of chemical process plating at present, as the transition metal such as W, Cr, Ni, Cr or alloy, its main purpose is to solve the problem come off too early.Its technology of preparing adopted is mainly electroless plating or plating, but electroless plating method exists, and thickness of coating is limited, plating process is slow, plating solution easily decomposes and there is the shortcomings such as pollution, and electrochemical plating are thickening then for electroless plating usually.These coating technologies all have the shortcomings such as energy consumption is high, easy pollution.
Self propagating high temperature sintering (SHS) technology is as the novel synthetic technology of one, and have and save time, equipment is simple, and energy utilization is abundant, and production efficiency is high, can produce the advantages such as the goods of large gauge.Adopt self-propagating high-temperature technology to prepare diamond tool made of superhard material, high temperature can be risen within a short period of time, improve the hold of diamond and bonding agent.Existing correlative study at present adopts SHS technology to prepare diamond tool, such as saves block, abrading block or emery wheel.But up to the present, also do not reported in the research of diamond surface plated coating by SHS technology.
Summary of the invention
The object of the invention is for the existing defect preparing diamond coating layer technology, propose a kind of superhard material abrasive particle/titanium aluminium nucleocapsid structure composite particles and preparation method thereof.
The technical solution used in the present invention is as follows:
A kind of superhard material particle/titanium aluminium nucleocapsid structure composite particles, described composite particles with superhard material particle for kernel, with titanium aluminium phase composite materials for coating layer; Described coating layer quality accounts for the 30-50% of composite particles quality.
The particle diameter of described superhard material particle is 20 ~ 450 μm, and coating thickness is 1-25 μm.
Described superhard material particle can be diamond, norbide or cubic boron nitride particle etc.
Present invention also offers the preparation method of a kind of described superhard material particle/titanium aluminium nucleocapsid structure composite particles, titanium valve, aluminium powder and Graphite Powder 99 are fully mixed to get compound A, again compound A and superhard material particle are fully mixed to get compound B, utilize self-propagating high-temperature to burn after being suppressed by compound B and obtain superhard material particle/titanium aluminium nucleocapsid structure composite particles.
The percent mass of titanium valve, aluminium powder, Graphite Powder 99 three consists of: titanium valve 65-75%, aluminium powder 10-20%, Graphite Powder 99 8-15%.
The particle diameter of raw material superhard material particle preferably controls as 20-400 μm; The particle diameter of titanium valve, aluminium powder, Graphite Powder 99 preferably controls as 30-70 μm.
Preferred employing ball milling mixing 5-10h realizes fully mixing and obtains compound A and compound B.
Be put in steel die by compound B, pressure is 100-200MPa, is pressed into the disk base substrate that diameter is 20mm.Certainly, be not limited in the disk base substrate of steel die and 20mm, other can realize the mould of corresponding function, the shape of base substrate and size is all feasible.
The condition utilizing self-propagating high-temperature to burn is as follows: the compound B after utilizing plasma torch to light compacting, ignition temperature is about 800-900 DEG C, pressure 20-50Mpa, reaction times 3 ~ 5s.Comparatively loose porous blocks can be obtained after preparation, be easy to pulverize.
The present invention adopts self-propagating high-temperature technology, in atmospheric conditions, utilize plasma torch or laser-beam welding machine to light sample in 10 seconds, self-propagating reaction occurs, high temperature sintering synthesis titanium aluminium Core-shell structure material, makes it form Ti-Al-C structure at surface of ultra-hard material such as diamonds.The equipment that self-propagating high-temperature reaction uses, technique are simple, and be swift in response, the time is short, production efficiency is high, and energy consumption is low, can reduce adamantine thermal damage, improves durability and the work-ing life of goods.
Superhard material particle/titanium aluminium nucleocapsid structure the composite particles of preparation can be applied in metal or resin base binding agent grinder material.Adopt identical resin glue, stone efficiency prepared by the normal diamond abrasive particle that the emery wheel that the present invention obtains wants specific surface not process is greatly improved.Its grinding efficiency improves 25%.In use procedure, composite particles difficult drop-off, work-ing life improves more than 33%.
The present invention compared with prior art has the following advantages:
The present invention utilizes SHS technology to synthesize a kind of new superhard material particle/titanium aluminium nucleocapsid structure composite particles, and have and save time, equipment is simple, energy utilization is abundant, and production efficiency is high, can produce the goods of large gauge, the advantages such as cost is low, have huge economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the SEM figure of diamond/titanium aluminium nucleocapsid structure composite particles that embodiment 1 obtains;
Fig. 2 is the EDS figure of diamond/titanium aluminium nucleocapsid structure composite particles that embodiment 1 obtains.
Fig. 3 is the grinding tool product that the composite particles using embodiment 1 to obtain is prepared as abrasive particle.
Embodiment
With specific embodiment, technical scheme of the present invention is described below, but protection scope of the present invention is not limited thereto:
Embodiment 1
Titanium valve, aluminium powder and Graphite Powder 99 is adopted to be raw material, its proportioning raw materials is respectively 71.1%, 20% and 8.9% by mass percentage, fully mixed by ball milling 5h and obtain compound A, granularity is selected to be that the diamond abrasive of 200 μm and compound A carry out ball milling 5h again, these powders are fully mixed and obtains compound B, wherein diamond abrasive takes in the ratio of the total mass percent 50% of raw material; Gained compound B is packed in steel die, tabletting machine pressurizes 100MPa, the diameter obtaining relative density about 70% is the circular base substrate of 20mm (lower same), base substrate is lighted finally by plasma torch, it is made SHS process reaction to occur, ignition temperature 800 DEG C, second in reaction times 5, finally obtain loose porous block, after simple pulverizing, screening obtains composite particles.
The composite particles kernel particle diameter about 220 μm obtained, coating thickness about 10 μm.
Fig. 3 is the outward appearance of the diamond-resin grinding wheel using the present embodiment composite particles to prepare as abrasive particle.Experiment shows, adopts identical resin glue, and stone efficiency prepared by the normal diamond abrasive particle that this emery wheel wants specific surface not process is greatly improved.Prepare emery wheel specification: 300*15*20, concentration is the resin bond wheel of 100%.Grinding polycrystalline diamond compacts (PDCs) material, adopts emery wheel prepared by normal diamond abrasive particle, and work-ing life is 295/every sheet emery wheel, and the emery wheel work-ing life adopting composite particles herein to prepare is 390/every sheet emery wheel; Therefore, this emery wheel is than the diamond-resin grinding wheel of non-self-propagating art breading, and in use, composite particles difficult drop-off, work-ing life improves more than 33%.
Embodiment 2
Titanium valve, aluminium powder and Graphite Powder 99 is adopted to be raw material, its proportioning raw materials is respectively 73.8%, 13.8% and 12.4% by mass percentage, by ball milling 6h these powders are fully mixed compound A, granularity is selected to be cubic boron nitride abrasive materials and the compound A ball milling 5h of 400 μm again, these powders are fully mixed compound B, wherein cubic boron nitride abrasive materials by mass percentage 50% ratio take; Gained compound B is packed in steel die, tabletting machine pressurizes 100MPa, obtain the base substrate of relative density about 65%, base substrate is lighted finally by plasma torch, it is made SHS process reaction to occur, ignition temperature 850 DEG C, second in reaction times 4, finally obtain loose porous block, after simple pulverizing, screening obtains composite particles.
The composite particles kernel particle diameter 450 μm obtained, coating thickness is 25 μm.
Embodiment 3
Titanium valve, aluminium powder and Graphite Powder 99 is adopted to be raw material, its proportioning raw materials is respectively 65%, 20% and 15% by mass percentage, by ball milling 5h these powders are fully mixed compound A, granularity is selected to be that the norbide abrasive material of 100 μm and compound A are by ball milling 5h again, these powders are fully mixed compound B, wherein norbide abrasive material by mass percentage 50% ratio take; Gained compound B is packed in steel die, tabletting machine pressurizes 100MPa, obtain the base substrate of relative density about 75%, base substrate is lighted finally by plasma torch, it is made SHS process reaction to occur, ignition temperature 800 DEG C, second in reaction times 3.5, finally obtain loose porous block, after simple pulverizing, screening obtains composite particles.
The composite particles kernel particle diameter 130 μm obtained, coating thickness is 15 μm.
Claims (10)
1. superhard material particle/titanium aluminium nucleocapsid structure composite particles, is characterized in that, described composite particles with superhard material particle for kernel, with titanium aluminium phase composite materials for coating layer; Described coating layer quality accounts for the 30-50% of composite particles quality.
2. a kind of superhard material particle as claimed in claim 1/titanium aluminium nucleocapsid structure composite particles, is characterized in that, the particle diameter of described superhard material particle is 20 ~ 450 μm, and coating thickness is 1-25 μm.
3. a kind of superhard material particle as claimed in claim 1 or 2/titanium aluminium nucleocapsid structure composite particles, it is characterized in that, described superhard material particle is diamond, norbide or cubic boron nitride particle.
4. the preparation method of superhard material particle described in claim 1/titanium aluminium nucleocapsid structure composite particles, it is characterized in that, titanium valve, aluminium powder and Graphite Powder 99 are fully mixed to get compound A, again compound A and superhard material particle are fully mixed to get compound B, utilize self-propagating high-temperature to burn after being suppressed by compound B and obtain superhard material particle/titanium aluminium nucleocapsid structure composite particles.
5. the preparation method of superhard material particle/titanium aluminium nucleocapsid structure composite particles as claimed in claim 4, it is characterized in that, the percent mass of titanium valve, aluminium powder, Graphite Powder 99 three consists of: titanium valve 65-75%, aluminium powder 10-20%, Graphite Powder 99 8-15%.
6. the preparation method of superhard material particle/titanium aluminium nucleocapsid structure composite particles as claimed in claim 5, it is characterized in that, the condition utilizing self-propagating high-temperature to burn is as follows: the compound B after utilizing plasma torch or laser-beam welding machine to light compacting, ignition temperature is about 800-900 DEG C, pressure 20-50Mpa, reaction times 3-5s.
7. the preparation method of superhard material particle/titanium aluminium nucleocapsid structure composite particles as claimed in claim 6, is characterized in that, adopts ball milling mixing 5-10h to realize fully mixing and obtains compound A and compound B.
8. the preparation method of superhard material particle/titanium aluminium nucleocapsid structure composite particles as claimed in claim 6, it is characterized in that, the particle diameter of raw material superhard material particle is 20-400 μm, and the particle diameter of titanium valve, aluminium powder, Graphite Powder 99 preferably controls as 30-70 μm.
9. the preparation method of superhard material particle/titanium aluminium nucleocapsid structure composite particles as claimed in claim 8, it is characterized in that, described superhard material particle is diamond, cubic boron nitride or norbide.
10. the preparation method of superhard material particle/titanium aluminium nucleocapsid structure composite particles as claimed in claim 6, it is characterized in that, be put in steel die by compound B, pressure is 100-200MPa, is pressed into the disk base substrate that diameter is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816419.4A CN104531069A (en) | 2014-12-25 | 2014-12-25 | Superhard material particle/titanium-aluminum composite particle having core-shell structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816419.4A CN104531069A (en) | 2014-12-25 | 2014-12-25 | Superhard material particle/titanium-aluminum composite particle having core-shell structure and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104531069A true CN104531069A (en) | 2015-04-22 |
Family
ID=52846708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410816419.4A Pending CN104531069A (en) | 2014-12-25 | 2014-12-25 | Superhard material particle/titanium-aluminum composite particle having core-shell structure and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104531069A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842286A (en) * | 2015-05-20 | 2015-08-19 | 广东工业大学 | Superhard grinding tool and manufacturing method thereof |
| CN109136605A (en) * | 2017-06-27 | 2019-01-04 | 中国科学院上海硅酸盐研究所 | A kind of self-propagating synthesis of copper-based composite granule and its application |
| CN109913684A (en) * | 2019-03-19 | 2019-06-21 | 丽水学院 | A method of quickly preparing Ti-Lu porous material |
| CN110078511A (en) * | 2019-03-11 | 2019-08-02 | 昆明理工大学 | A kind of Ti3AlC2The preparation method of base ceramic bond diamond boring means cutter head |
-
2014
- 2014-12-25 CN CN201410816419.4A patent/CN104531069A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 梁宝岩等: "自蔓延高温烧结制备陶瓷结合剂金刚石复合材料", 《金刚石与磨料磨具工程》 * |
| 穆云超等: "自蔓延高温法在金刚石表面涂覆钛铝涂层的研究", 《金刚石与磨料磨具工程》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842286A (en) * | 2015-05-20 | 2015-08-19 | 广东工业大学 | Superhard grinding tool and manufacturing method thereof |
| CN109136605A (en) * | 2017-06-27 | 2019-01-04 | 中国科学院上海硅酸盐研究所 | A kind of self-propagating synthesis of copper-based composite granule and its application |
| CN109136605B (en) * | 2017-06-27 | 2021-02-12 | 中国科学院上海硅酸盐研究所 | Self-propagating synthesis of copper-based composite powder and application thereof |
| CN110078511A (en) * | 2019-03-11 | 2019-08-02 | 昆明理工大学 | A kind of Ti3AlC2The preparation method of base ceramic bond diamond boring means cutter head |
| CN109913684A (en) * | 2019-03-19 | 2019-06-21 | 丽水学院 | A method of quickly preparing Ti-Lu porous material |
| CN109913684B (en) * | 2019-03-19 | 2021-03-23 | 丽水学院 | Method for rapidly preparing titanium-aluminum porous material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104802104B (en) | A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel | |
| CN104531069A (en) | Superhard material particle/titanium-aluminum composite particle having core-shell structure and preparation method thereof | |
| CN102605207B (en) | Gradient metal ceramic composite material and preparation method thereof | |
| CN104073665B (en) | A kind of preparation method of WC-Co-cBN composite | |
| CN104400614A (en) | Mixed ultra-hard abrasive honing stone | |
| CN103464764B (en) | Metal matrix wear-resistant corrosion-resistant surface coating composite and preparation method thereof | |
| CN103521132A (en) | Synthesis technique of high-grade self-sharpening polycrystalline diamond | |
| CN104607110A (en) | Manufacturing method for cubic boron nitride crystal | |
| CN106521432B (en) | A kind of method that cubic boron nitride micro powder granule surface metalation is modified | |
| CN104772711A (en) | Polycrystalline cubic boron nitride abrasive and preparation method thereof | |
| CN103406538A (en) | Impregnated column matrix powder for diamond-impregnated bit as well as method for manufacturing matrix | |
| CN109078581B (en) | Catalyst alloy powder, surface groove-shaped diamond prepared from catalyst alloy powder, preparation method and application | |
| CN103878375B (en) | A kind of preparation method of sintered carbide tools cutter head of positioning arrangement | |
| CN105437091A (en) | Large-pore resin binder superhard material grinding wheel for stainless steel end face grinding and manufacturing method thereof | |
| CN103566830B (en) | Synthesis method of octahedron diamond | |
| CN102899547A (en) | Manufacturing method of diamond wire saw bead cutting abrasive added with cubic boron nitride | |
| CN104175237A (en) | Diamond grinding wheel adopting rare-earth modified tungsten-based bond and manufacturing method thereof | |
| CN102643094B (en) | Preparation method of silicon carbide grinding tool | |
| CN104128605B (en) | Rare earth modified tungstenio binder diamond saw blade and manufacture method thereof | |
| CN103755317B (en) | A kind of preparation method strengthening polycrystalline cubic boron nitride composite superhard material | |
| CN104148642B (en) | Rare earth modified tungsten based anchoring agent diamond ultra-thin saw blade and manufacture method thereof | |
| CN104073722A (en) | Composite powder material, preparation method and applications thereof | |
| CN103949187A (en) | Coarse particle polycrystalline diamond synthesizing technology | |
| CN101775574A (en) | Heat treatment technology for metal surface mixing coated cubic boron nitride and diamond | |
| CN202215247U (en) | Micronano ceramic particle laser reinforced cutting tooth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |