CN108315623A - A kind of diamond composite and preparation method thereof of addition oxide nano rare earth - Google Patents
A kind of diamond composite and preparation method thereof of addition oxide nano rare earth Download PDFInfo
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- CN108315623A CN108315623A CN201810348848.1A CN201810348848A CN108315623A CN 108315623 A CN108315623 A CN 108315623A CN 201810348848 A CN201810348848 A CN 201810348848A CN 108315623 A CN108315623 A CN 108315623A
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- rare earth
- oxide
- nano rare
- oxide nano
- diamond
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
Abstract
A kind of diamond composite and preparation method thereof of addition oxide nano rare earth; diamond composite is by being sintered after carcass material and diamond particles mixing; carcass material is made of oxide nano rare earth and basis material, and the oxide nano rare earth is yttrium oxide, lanthana, cerium oxide, praseodymium oxide or rubidium oxide；Described matrix material is the mixture of WC powder, 663 bronze powders, YG6 alloyed powders, Ni powder and Mn powder.The basis material for adding oxide nano rare earth is mixed with diamond, is sintered using pressure sintering, the diamond composite of oxide nano rare earth dispersion-strengtherning is made.There is high thermodynamic stability using oxide nano rare earth, characteristic insoluble in basis material and low diffusion plays nano dispersion reinforced effect, significantly improves basis material intensity, hardness and wearability, the working life for substantially prolonging diamond composite, improves work efficiency.
Description
Technical field
The present invention relates to a kind of diamond composites and preparation method thereof of addition oxide nano rare earth, belong to preparation
Technical field.
Background technology
Diamond composite mainly adds using diamond particles as hard phase using metal or alloy as basis material
Enter certain proportion binder, by the methods of hot pressing, dipping sinter molding, is applied in the wear-resisting cutting workpiece of different demands.
Even wearing keeps diamond particles exposed to denude or cut to basis material in use.Therefore diamond composite
Ability to work be heavily dependent on the performance of basis material, to have comparable intensity, hardness and wearability.Generally pass through
The ingredient and proportioning of metal or alloy are adjusted, the content and ratio of binder, it is strong that sintering processing and temperature etc. improve basis material
Degree, hardness and wearability are to increase diamond composite service life and working efficiency.
Invention content
The object of the present invention is to provide a kind of diamond composites of addition oxide nano rare earth, utilize nano rare earth
Oxide such as yttrium oxide, lanthana, cerium oxide, praseodymium oxide, rubidium oxide etc. has high thermodynamic stability, does not dissolve in matrix material
Material and low diffusible characteristic, play nano dispersion reinforced effect, can improve basis material intensity and hardness and moulding
Decline less, to improve the service life and working efficiency of diamond composite with toughness.
Second object of the present invention is to provide the preparation method of above-mentioned diamond composite.
A kind of diamond composite of addition oxide nano rare earth of the present invention, is by carcass material and diamond
It is sintered after grain mixing, carcass material is made of oxide nano rare earth and basis material, nano rare earth oxidation
Object is yttrium oxide, lanthana, cerium oxide, praseodymium oxide or rubidium oxide；Described matrix material is WC powder, 663 bronze powders, YG6 alloys
The mixture of powder, Ni powder and Mn powder.
A kind of preparation method of the diamond composite of addition oxide nano rare earth, this approach includes the following steps：
1) there are two types of oxide nano rare earth dispersing methods：
First method is to pour into oxide nano rare earth in dispersion liquid, using the fully dispersed nano particle of ultrasonic wave,
Basis material is poured into dispersion liquid, so that it is sufficiently mixed using glass bar or magnetic stirrer stirring；Nano rare earth aoxidizes
Object and basis material are homogenously mixed together, and form carcass material；
Second method is to pour into oxide nano rare earth and basis material in ball grinder, and appropriate dispersion liquid is added, makes
It is mixed with planetary ball mill；Oxide nano rare earth and basis material are homogenously mixed together；Formation forms carcass material；
2) diamond particles are added cleaning agent and be cleaned by ultrasonic and dried with vacuum drying chamber；
3) diamond particles in the carcass material and step 2) in step 1) are stirred in crucible, appropriate dispersion is added
Liquid wetting obtains being sintered required mixed raw material convenient for being uniformly mixed；
4) mixed raw material obtained in step 3) is inserted in graphite jig, graphite jig is packed into hot pressing furnace, hot pressing furnace
It is evacuated to 0.1Pa or less；With 3~8 DEG C/min pre-heating temperature elevations to 200 DEG C, 850 DEG C are warming up to 8~16 DEG C/min, then with 3
~8 DEG C/min is warming up to 930 DEG C~1120 DEG C, and 10~30MPa of pressurization simultaneously keeps the temperature 4~16 minutes, removes natural cooling after pressure
To room temperature, the diamond composite of addition oxide nano rare earth is obtained.
The oxide nano rare earth that the step 1) uses is yttrium oxide, lanthana, cerium oxide, praseodymium oxide or rubidium oxide.
The dispersion liquid that the step 1) and step 3) use is ethyl alcohol, acetone, glycerine or isopropanol.
The diamond that the step 2) uses is diamond.
The cleaning agent that the step 2) uses is nitric acid, hydrochloric acid, acetone or alcohol；
Described matrix material is the mixture of WC powder, 663 bronze powders, YG6 alloyed powders, Ni powder and Mn powder.The bronze
The ingredient and mass percentage content contained is Sn6%, Zn6%, Pb3%, Cu85%.
Beneficial effects of the present invention：
The diamond composite of addition oxide nano rare earth prepared by the present invention, using nano dispersion reinforced mechanism and
The high thermodynamic stability of rare earth oxide does not dissolve in basis material and low diffusible characteristic, it is strong to significantly improve basis material
Degree, hardness and wearability greatly prolong the working life of diamond composite, improve working efficiency.
Specific implementation mode
A kind of specific preparation method of the diamond composite of addition oxide nano rare earth：
Weigh 30nm yttrium oxides 0.38g, 74 μm of WC powder 9.85g, 45 μm of 663 bronze (Sn6%, Zn6%, Pb3%,
Powder, is all put into oxidation by Cu85%) 8.62g, 200 mesh YG6 alloys 3.69g, 20 μm of Ni powder 1.23g and 20 μm of Mn powder 1.23g
In zirconium ball grinder, 3ml absolute ethyl alcohols are added and suitably stir, powder is made fully to soak.Ball mill with 400rpm rotating speeds ball milling for 24 hours,
Obtain carcass material.35~40 mesh diamond 3.04g dust technologies and ethyl alcohol are cleaned by ultrasonic 20 minutes respectively, then clear with distilled water
It is washed till neutrality, is placed in vacuum drying chamber drying.Carcass material and diamond are put into crucible, after 5ml ethyl alcohol stirring 1h is added
It is packed into graphite jig.Mold is packed into hot pressing furnace, and hot pressing furnace is evacuated to 0.1Pa or less and starts to be sintered, and is preheated and is risen with 5 DEG C/min
Temperature is warming up to 850 DEG C to 200 DEG C, with 10 DEG C/min, then is warming up to 930 DEG C with about 5 DEG C/min, pressurize 8 points of 25MPa and heat preservation
Clock removes cooled to room temperature after pressure, obtains the diamond composite of addition oxide nano rare earth.After tested, institute
It is 941MPa to obtain composite material bending strength, and tensile strength 340MPa, HRC hardness is 41.4.
Claims (3)
1. a kind of diamond composite of addition oxide nano rare earth, it is characterised in that：It is by carcass material and diamond
It is sintered after particle mixing, carcass material is made of oxide nano rare earth and basis material, the nano rare earth oxygen
Compound is yttrium oxide, lanthana, cerium oxide, praseodymium oxide or rubidium oxide；Described matrix material is WC powder, 663 bronze powders, YG6 conjunctions
The mixture of bronze, Ni powder and Mn powder.
2. a kind of preparation method of the diamond composite of addition oxide nano rare earth, feature described in claim 1 exist
In：This approach includes the following steps：
1) there are two types of oxide nano rare earth dispersing methods：
First method is to pour into oxide nano rare earth in dispersion liquid, using the fully dispersed nano particle of ultrasonic wave, by base
Body material pours into dispersion liquid, so that it is sufficiently mixed using glass bar or magnetic stirrer stirring；Oxide nano rare earth and
Basis material is homogenously mixed together, and forms carcass material；
Second method is to pour into oxide nano rare earth and basis material in ball grinder, and appropriate dispersion liquid is added, uses row
Celestial body grinding machine mixes；Oxide nano rare earth and basis material are homogenously mixed together；Formation forms carcass material；
2) diamond particles are added cleaning agent and be cleaned by ultrasonic and dried with vacuum drying chamber；
3) diamond particles in the carcass material and step 2) in step 1) are stirred in crucible, appropriate dispersion liquid profit is added
It is wet to be convenient for being uniformly mixed, it obtains being sintered required mixed raw material；
4) mixed raw material obtained in step 3) is inserted in graphite jig, graphite jig is packed into hot pressing furnace, and hot pressing furnace is taken out true
Sky is to 0.1Pa or less；With 3~8 DEG C/min pre-heating temperature elevations to 200 DEG C, 850 DEG C are warming up to 8~16 DEG C/min, then with 3~8
DEG C/min is warming up to 930 DEG C~1120 DEG C, 10~30MPa of pressurization simultaneously keeps the temperature 4~16 minutes, and room is naturally cooled to after removing pressure
Temperature obtains the diamond composite of addition oxide nano rare earth.
3. a kind of preparation method of the diamond composite of addition oxide nano rare earth according to claim 1,
It is characterized in that：
The oxide nano rare earth that the step 1) uses is yttrium oxide, lanthana, cerium oxide, praseodymium oxide or rubidium oxide.
The dispersion liquid that the step 1) and step 3) use is ethyl alcohol, acetone, glycerine or isopropanol.
The diamond that the step 2) uses is diamond.
The cleaning agent that the step 2) uses is nitric acid, hydrochloric acid, acetone or alcohol；
Described matrix material is the mixture of WC powder, 663 bronze powders, YG6 alloyed powders, Ni powder and Mn powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810348848.1A CN108315623A (en) | 2018-04-18 | 2018-04-18 | A kind of diamond composite and preparation method thereof of addition oxide nano rare earth |
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| CN201810348848.1A CN108315623A (en) | 2018-04-18 | 2018-04-18 | A kind of diamond composite and preparation method thereof of addition oxide nano rare earth |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563013A (en) * | 2020-11-30 | 2021-03-26 | 三菱电机(中国)有限公司 | Method for preparing high intrinsic coercivity neodymium iron boron permanent magnet material through grain boundary diffusion |
| CN115491537A (en) * | 2022-09-23 | 2022-12-20 | 河南工业大学 | High-thermal-conductivity diamond/copper composite material and preparation method thereof |
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| CN112563013A (en) * | 2020-11-30 | 2021-03-26 | 三菱电机(中国)有限公司 | Method for preparing high intrinsic coercivity neodymium iron boron permanent magnet material through grain boundary diffusion |
| CN115491537A (en) * | 2022-09-23 | 2022-12-20 | 河南工业大学 | High-thermal-conductivity diamond/copper composite material and preparation method thereof |
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Application publication date: 20180724 |