CN105525121A - Preparation method and raw material formula of boron carbide abrasive material - Google Patents
Preparation method and raw material formula of boron carbide abrasive material Download PDFInfo
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- CN105525121A CN105525121A CN201510417844.0A CN201510417844A CN105525121A CN 105525121 A CN105525121 A CN 105525121A CN 201510417844 A CN201510417844 A CN 201510417844A CN 105525121 A CN105525121 A CN 105525121A
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Abstract
The invention relates to a preparation method and a raw material formula of a boron carbide abrasive material. The preparation method of the boron carbide abrasive material comprises the following steps: (1) purification and diffusion treatment of carbon nanotubes: soaking and cleaning multi-wall or single-wall carbon nanotubes by using acetone, adopting a conventional method as a purification process, and then putting the carbon nanotubes in a mixed solution for ultrasonic oscillating dispersion, and finally, drying in a drying oven at a temperature of 50-60 DEG C; (2) synthesis raw material formula: dispersed carbon nanotubes having the mass fraction of 0.5-5%, boron oxide in a molar ratio twice that of the dispersed carbon nanotubes, a binder of 9-12% and the balance of diamond fine powder having a particle size range of 3-5 microns; (3) chemical reaction and thermal treatment of the raw materials; (4) ultrahigh-pressure synthesizing; and (5) residual stress elimination. The preparation method of the boron carbide abrasive material employs higher treatment temperature and pressure, resulting in that the produced boron carbide abrasive material is more excellent in properties and has higher abrasion resistance.
Description
Technical field
The present invention relates to abrasive substance technical field, more particularly, relate to a kind of norbide abrasive substance preparation method and composition of raw materials thereof.
Background technology
Norbide (boroncarbide), has another name called boron carbide, and molecular formula is B4C, is generally dark gray powder.Norbide is commonly called as man-made diamond, its relative density 2.52, fusing point 2350 DEG C, boiling point > 3500 DEG C, microhardness>=3500kgf/mm
2, bending strength>=400Mpa is a kind of boride having very high rigidity.With acid, alkaline solution Fails To Respond, easily manufacture and also price relatively cheap.Be widely used in the grinding of mechanically resistant material, grinding, boring and polishing, the manufacture of metal boride and smelting boron sodium, boron alloy and special welding etc.
Norbide has high chemical potential, neutron-absorbing, wear-resisting and semiconducting electrical conductivity.To one of the most stable material of acid, all stable in all dense or rare acid or alkali aqueous solution.Because norbide is a kind of than silicon carbide or the also hard solid of wolfram varbide, it is as a kind of coarse sand abrasive substance a long time ago.Because itself fusing point is high, not easily cast artifact, but by high melt powder, it can be processed into simple shape.For the grinding of the mechanically resistant material such as Wimet, jewel, grinding, boring and polishing.But how the boron carbide material of synthesis performance excellence is the problem that those skilled in the art endeavour to solve always.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of norbide abrasive substance preparation method and composition of raw materials thereof.
The technical solution adopted for the present invention to solve the technical problems is:
Construct a kind of norbide abrasive substance preparation method, wherein, comprise the following steps:
(1) purifying of carbon nanotube and dispersion treatment:
The carbon nanotube of many walls or single wall adopts acetone soaking and washing, and purifying process is as ordinary method, and be then positioned in mixing solutions by carbon nanotube and carry out ultra-sonic oscillation dispersion, finally put into drying in oven, oven temperature is 50 ~ 60 DEG C;
(2) synthesis material prepares:
Synthesis material is filled a prescription: the carbon nanotube after massfraction 0.5 ~ 5% disperses, the boron oxide of its twice as high molar ratio, and caking agent is 9 ~ 12%, and surplus is the diadust of particle size range 3 μm ~ 5 μm;
Hard alloy substrate; Diadust carries out surface cleaning process and pre-greying before the use, and hard alloy substrate and caking agent carry out surface cleaning process; Other subsidiary material used carry out corresponding clean; Pyrophyllite block before assembling, agalmatolite ring must remove moisture; Be dry mixed after diadust, caking agent and carbon nanotube compound are directly dried and make mixing raw material;
(3) chemical reaction of raw material and thermal treatment:
Mixing raw material being heated to temperature is 1000 DEG C, and the time is 0.5 ~ 1h; Then, reacted raw material being placed on temperature is save backup in the baking oven of 80 ~ 100 DEG C;
(4) ultra-high voltage synthesis:
Synthetic block is positioned in pyrophyllite block mould, loads onto agalmatolite ring, conducting steel ring and catalyst sheet mould is additional, in six-plane piercer, carry out high pressure high temperature compound experiment;
Synthesis technologic parameter is: sintering temperature 2000 DEG C, sintering pressure 7GPa, and the heat-insulation pressure keeping time is 7 ~ 8 minutes;
(5) unrelieved stress is eliminated:
Product after synthesis is carried out vacuum aging annealing.
Norbide abrasive substance preparation method of the present invention, wherein, described mixing solutions is 200ml dehydrated alcohol+0.1 ~ 1.0g sodium lauryl sulphate mixing solutions.
Norbide abrasive substance preparation method of the present invention, wherein, the surface cleaning process of described hard alloy substrate and caking agent refers to:
First mating surface is carried out sanding and polishing process, erases zone of oxidation and the hole of mating surface, until expose unsalted surface, then carry out deoiling, wash, ultrasonic cleaning, infrared drying, finally load in clean vessel for subsequent use.
Present invention also offers a kind of composition of raw materials prepared for norbide abrasive substance, wherein, the carbon nanotube after massfraction 0.5 ~ 5% dispersion is comprised, the boron oxide of its twice as high molar ratio, caking agent is 9 ~ 12%, and surplus is the diadust of particle size range 3 μm ~ 5 μm.
Composition of raw materials of the present invention, wherein, comprise the carbon nanotube after massfraction 3% dispersion, the boron oxide of its twice as high molar ratio, caking agent is 10%, and surplus is the diadust of particle size range 4 μm.
Composition of raw materials of the present invention, wherein, comprise the carbon nanotube after massfraction 5% dispersion, the boron oxide of its twice as high molar ratio, caking agent is 12%, and surplus is the diadust of particle size range 5 μm.
Beneficial effect of the present invention is: by adopting higher treatment temp and pressure, makes the norbide abrasive substance performance that obtains more excellent, has higher wear resistance.
Embodiment
In order to make the object of the embodiment of the present invention, technical scheme and advantage clearly, clear, complete description is carried out below in conjunction with the technical scheme in the embodiment of the present invention, obviously, described embodiment is section Example of the present invention, instead of whole embodiment.Based on embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not paying creative work, all belongs to protection scope of the present invention.
The norbide abrasive substance preparation method of present pre-ferred embodiments comprises the following steps:
(1) purifying of carbon nanotube and dispersion treatment:
The carbon nanotube of many walls or single wall adopts acetone soaking and washing, and purifying process is as ordinary method, and be then positioned in mixing solutions by carbon nanotube and carry out ultra-sonic oscillation dispersion, finally put into drying in oven, oven temperature is 50 ~ 60 DEG C;
(2) synthesis material prepares:
Synthesis material is filled a prescription: the carbon nanotube after massfraction 0.5 ~ 5% disperses, the boron oxide of its twice as high molar ratio, and caking agent is 9 ~ 12%, and surplus is the diadust of particle size range 3 μm ~ 5 μm;
Hard alloy substrate; Diadust carries out surface cleaning process and pre-greying before the use, and hard alloy substrate and caking agent carry out surface cleaning process; Other subsidiary material used carry out corresponding clean; Pyrophyllite block before assembling, agalmatolite ring must remove moisture; Be dry mixed after diadust, caking agent and carbon nanotube compound are directly dried and make mixing raw material;
(3) chemical reaction of raw material and thermal treatment:
Mixing raw material being heated to temperature is 1000 DEG C, and the time is 0.5 ~ 1h; Then, reacted raw material being placed on temperature is save backup in the baking oven of 80 ~ 100 DEG C;
(4) ultra-high voltage synthesis:
Synthetic block is positioned in pyrophyllite block mould, loads onto agalmatolite ring, conducting steel ring and catalyst sheet mould is additional, in six-plane piercer, carry out high pressure high temperature compound experiment;
Synthesis technologic parameter is: sintering temperature 2000 DEG C, sintering pressure 7GPa, and the heat-insulation pressure keeping time is 7 ~ 8 minutes;
(5) unrelieved stress is eliminated:
Product after synthesis is carried out vacuum aging annealing.
Test proves, in such scheme, by adopting higher treatment temp, the norbide abrasive substance wear resisting property that obtains can be made more excellent.
In above-mentioned norbide abrasive substance preparation method, described mixing solutions is 200ml dehydrated alcohol+0.1 ~ 1.0g sodium lauryl sulphate mixing solutions.
In above-mentioned norbide abrasive substance preparation method, the surface cleaning process of described hard alloy substrate and caking agent refers to: first mating surface is carried out sanding and polishing process, erase zone of oxidation and the hole of mating surface, until expose unsalted surface, then carry out deoiling, wash, ultrasonic cleaning, infrared drying, finally load in clean vessel for subsequent use.
In another embodiment of the present invention, additionally provide a kind of composition of raw materials prepared for norbide abrasive substance, carbon nanotube after disperseing comprising massfraction 0.5 ~ 5%, the boron oxide of its twice as high molar ratio, caking agent is 9 ~ 12%, and surplus is the diadust of particle size range 3 μm ~ 5 μm.Test proves, by adopting the less diadust of particle diameter, the norbide abrasive substance wear resisting property that obtains can be made more excellent.
In above-mentioned raw materials formula, comprise the carbon nanotube after massfraction 3% dispersion, the boron oxide of its twice as high molar ratio, caking agent is 10%, and surplus is the diadust of particle size range 4 μm.
In above-mentioned raw materials formula, comprise the carbon nanotube after massfraction 5% dispersion, the boron oxide of its twice as high molar ratio, caking agent is 12%, and surplus is the diadust of particle size range 5 μm.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (6)
1. a norbide abrasive substance preparation method, is characterized in that, comprises the following steps:
(1) purifying of carbon nanotube and dispersion treatment:
The carbon nanotube of many walls or single wall adopts acetone soaking and washing, and purifying process is as ordinary method, and be then positioned in mixing solutions by carbon nanotube and carry out ultra-sonic oscillation dispersion, finally put into drying in oven, oven temperature is 50 ~ 60 DEG C;
(2) synthesis material prepares:
Synthesis material is filled a prescription: the carbon nanotube after massfraction 0.5 ~ 5% disperses, the boron oxide of its twice as high molar ratio, and caking agent is 9 ~ 12%, and surplus is the diadust of particle size range 3 μm ~ 5 μm;
Hard alloy substrate; Diadust carries out surface cleaning process and pre-greying before the use, and hard alloy substrate and caking agent carry out surface cleaning process; Other subsidiary material used carry out corresponding clean; Pyrophyllite block before assembling, agalmatolite ring must remove moisture; Be dry mixed after diadust, caking agent and carbon nanotube compound are directly dried and make mixing raw material;
(3) chemical reaction of raw material and thermal treatment:
Mixing raw material being heated to temperature is 1000 DEG C, and the time is 0.5 ~ 1h; Then, reacted raw material being placed on temperature is save backup in the baking oven of 80 ~ 100 DEG C;
(4) ultra-high voltage synthesis:
Synthetic block is positioned in pyrophyllite block mould, loads onto agalmatolite ring, conducting steel ring and catalyst sheet mould is additional, in six-plane piercer, carry out high pressure high temperature compound experiment;
Synthesis technologic parameter is: sintering temperature 2000 DEG C, sintering pressure 7GPa, and the heat-insulation pressure keeping time is 7 ~ 8 minutes;
(5) unrelieved stress is eliminated:
Product after synthesis is carried out vacuum aging annealing.
2. norbide abrasive substance preparation method according to claim 1, is characterized in that, described mixing solutions is 200ml dehydrated alcohol+0.1 ~ 1.0g sodium lauryl sulphate mixing solutions.
3. norbide abrasive substance preparation method according to claim 1, is characterized in that, the surface cleaning process of described hard alloy substrate and caking agent refers to:
First mating surface is carried out sanding and polishing process, erases zone of oxidation and the hole of mating surface, until expose unsalted surface, then carry out deoiling, wash, ultrasonic cleaning, infrared drying, finally load in clean vessel for subsequent use.
4. the composition of raw materials prepared for norbide abrasive substance, it is characterized in that, comprise the carbon nanotube after massfraction 0.5 ~ 5% dispersion, the boron oxide of its twice as high molar ratio, caking agent is 9 ~ 12%, and surplus is the diadust of particle size range 3 μm ~ 5 μm.
5. composition of raw materials according to claim 4, is characterized in that, comprise the carbon nanotube after massfraction 3% dispersion, the boron oxide of its twice as high molar ratio, caking agent is 10%, and surplus is the diadust of particle size range 4 μm.
6. composition of raw materials according to claim 4, is characterized in that, comprise the carbon nanotube after massfraction 5% dispersion, the boron oxide of its twice as high molar ratio, caking agent is 12%, and surplus is the diadust of particle size range 5 μm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179420A (en) * | 2018-10-24 | 2019-01-11 | 哈尔滨工业大学（威海） | A kind of B4The preparation method of C nano band |
| TWI735227B (en) * | 2020-05-11 | 2021-08-01 | 國立臺北科技大學 | Composite polycrystalline diamond flake, composition and manufacturing method thereof |
-
2015
- 2015-07-16 CN CN201510417844.0A patent/CN105525121A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179420A (en) * | 2018-10-24 | 2019-01-11 | 哈尔滨工业大学（威海） | A kind of B4The preparation method of C nano band |
| CN109179420B (en) * | 2018-10-24 | 2021-09-28 | 哈尔滨工业大学（威海） | B4Preparation method of C nanobelt |
| TWI735227B (en) * | 2020-05-11 | 2021-08-01 | 國立臺北科技大學 | Composite polycrystalline diamond flake, composition and manufacturing method thereof |
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Application publication date: 20160427 |