CN105272329A - Preparation method of aluminum oxide and silicon carbide and zirconium carbide nano whisker enhanced parting tool material - Google Patents
Preparation method of aluminum oxide and silicon carbide and zirconium carbide nano whisker enhanced parting tool material Download PDFInfo
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- CN105272329A CN105272329A CN201510716980.XA CN201510716980A CN105272329A CN 105272329 A CN105272329 A CN 105272329A CN 201510716980 A CN201510716980 A CN 201510716980A CN 105272329 A CN105272329 A CN 105272329A
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- aluminum oxide
- silicon carbide
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- carbide
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Abstract
The invention belongs to the field of cutter materials, relates to a parting tool material, and particularly to an aluminum oxide and silicon carbide and zirconium carbide nano whisker enhanced parting tool material. The in-situ reacted aluminum oxide and silicon carbide and zirconium carbide whisker enhanced parting tool material powder is composed of aluminum oxide base material powder and aluminum oxide and silicon carbide and zirconium carbide whisker powder, which are uniformly mixed by adopting a mechanical mixing method, and the mixed powder is subjected to gradual heating degassing under the vacuum condition of 10 to 6 torrs after treated by cold compacting, and then is subjected to vacuum sintering for 1 to 4 hours under the condition of 50 to 200 Mpa and 1500 to 1600 DEG C. The enhanced nano whisker is narrow and small in diameter size, uniform in distribution, high in structure stability and free of pollution on the surface, and the strength, tenacity, hardness, abrasion resistance and good fatigue property of the parting tool material are remarkably improved.
Description
Technical field
The invention belongs to cutter material field, relate to a kind of cutting tool material, particularly a kind of aluminum oxide-silicon carbide--zirconium carbide nano whisker strengthens the preparation method of cutting tool material.
Background technology
Cutting technique is link important in industrial production, at present, cutting technique is indispensable in the use of the blanking of blank, the preparation of part and equipment manufacture, middle usage quantity is very large in the industrial production, and cutting tool requires high hardness and wear resistance, wherein hardness high (HRC >=58-64), guarantee cutter is when machined material produces distortion, cutter itself does not produce distortion and cracking, and high wear resistance is that mould life-time service is not out of shape, and high-wearing feature is based on high rigidity.Require enough strength and toughnesses, high intensity can improve the resistance to deformation of cutter simultaneously, and high toughness prevents the brittle failure under shock load.Also require good fatigue property and good bite-resistant ability.
Cutting tool material is mainly divided into rapid steel, Wimet and NEW TYPES OF TOOL MATERIALS, the matrix of cutting tool material of the present invention is aluminum oxide, for the high rigidity required and wear resistance, high thermotolerance, high chemical stability and lower frictional coefficient, the present invention is NEW TYPES OF TOOL MATERIALS, the matrix of aluminum oxide adopt aluminum oxide-silicon carbide--zirconium carbide nano whisker strengthen, the novel cutting tool material of the one at high temperature obtained.
The existing cutting tool of current China is in patent 102233594, and adopt growth in situ α-sialon, reduce intergranular phase, activeness and quietness, its tool matrix material is silicon nitride, is the mutual enhancing between ceramic phase.And improve cutting tool hardness and wear resistance, the research further of thermotolerance needs further, whisker reinforcement cutting tool material is adopted to make significant headway in recent years, the present invention utilizes the good characteristic of aluminum oxide-silicon carbide--zirconium carbide three kinds of different substancess, by the nano whisker of in-situ preparation three kinds of materials, toughen and intensify cutting tool material is reached by nano whisker, the present invention can significantly improve the intensity of cutting tool, toughness, hardness, wear resistance and good fatigue property, has important industrial application value and wide application field.
Summary of the invention
The object of patent of the present invention is: be to overcome above-mentioned prior art not enough, a kind of stable processing technology, low production cost, non-pollution discharge are provided, the aluminum oxide-silicon carbide-of production can be organized under normal conditions-zirconium carbide nano whisker strengthens the preparation method of WCrMoV cutting tool material, and more traditional ceramic cutters have high hardness and wear resistance, high thermotolerance, high chemical stability and lower frictional coefficient.
The invention provides a kind of in-situ preparation aluminum oxide-silicon carbide--zirconium carbide whisker reinforcement cutting tool material, it is characterized in that: this material forms the aluminum oxide-silicon carbide--zirconium carbide whisker and alumina matrix material composition that align along extrusion flow line, diameter of whiskers is 200-800nm, and the volume total amount of In-sltu reinforcement phase is at 0.05-0.10.
The present invention is as follows by the following technical programs: in-situ preparation aluminum oxide-silicon carbide--zirconium carbide whisker reinforcement cutting tool material powder is by alumina matrix material powder and aluminum oxide-silicon carbide--zirconium carbide whisker powder constituent, then mechanical mixing is adopted to make alumina substrate powder and aluminum oxide-silicon carbide--zirconium carbide whisker powder Homogeneous phase mixing, 10 after mixed powder cold compaction
-6progressively bake out, then vacuum sintering 1-4 hour under 1500-1600 DEG C, 50-200Mpa condition under holder vacuum condition.
Test shows that obtained in-situ preparation aluminum oxide-silicon carbide--zirconium carbide whisker reinforcement cutting tool material has high-strong toughness.
Scheme material requested is by following concrete steps preparation:
(1) preparation of aluminum oxide-silicon carbide--zirconium carbide whisker:
The preparation technology of in-situ preparation aluminum oxide-silicon carbide--zirconium carbide whisker powder is: aluminum oxide-silicon carbide--zirconium carbide whisker persursor material chemical composition and weight percent are: ZrO
2: 25.4 ~ 28.2%, Al:19.6 ~ 19.8%, SiO
2: 25.4 ~ 28.2%, C:20.2 ~ 22.6%, Mn:0.1 ~ 0.9%, NaCl:1.0 ~ 8.1%.The precursor composite powder that can generate aluminum oxide-silicon carbide--zirconium carbide whisker prepared in proportion is added dehydrated alcohol and in ball mill, carries out mechanize ball milling 48 hours; acquisition has the ultra-fine precursor composite powder of 200-600nm grain-size; powder is loaded in crystal vessel; under argon gas atmosphere protection and the temperature condition of 1550 DEG C-1800 DEG C, insulation 90min-180min synthesizes.
Si+C=(heats) SiC
ZrO
2+ 3C=(heats) ZrC+2CO ↑
4Al+3O
2=(heating) 2Al
2o
3
(2) alumina matrix material powder preparation:
The chemical composition of alumina matrix material and weight percent are: Al
2o
3: 99.99%.The present invention obtains best comprehensive mechanical property and biology corrosive nature, strictly the content of the impurity such as control Fe, Cu, Al: the purity of Al2O3 is more than or equal to 99.99%.Alumina powder adds dehydrated alcohol and in ball mill, carries out mechanize ball milling 48 hours, obtains and has 50-100 μm of grain-size ultrafine powder.
(3) aluminum oxide-silicon carbide--zirconium carbide whisker and alumina matrix material mixed powder:
The weight content of aluminum oxide-silicon carbide--zirconium carbide in aluminum oxide bio-medical material is 5-10%, and the proportions being 5-10:95-90 by weight percentage by aluminum oxide-silicon carbide--zirconium carbide whisker and alumina matrix material is aluminum oxide-silicon carbide--zirconium carbide whisker reinforcement cutting tool material powder.
This in-situ preparation aluminum oxide-silicon carbide--zirconium carbide whisker reinforcement cutting tool material, without the need to specific equipment, can organize production in regular oxidation aluminium manufacturer, less investment of the present invention, instant effect, cost of recouping capital outlay fast.
Compared with existing alumina-ceramic cutting tool material, preparation method's tool of in-situ preparation aluminum oxide-silicon carbide--zirconium carbide crystal whisker toughened aluminum oxide has the following advantages:
(1) toughness, wear resistance, intensity significantly improve, and the poor mechanical property of the 2 hours extruded samples in interval is less than 6%, and this will be conducive to stably manufactured that is in enormous quantities, small size stomatology material.Enhanced granule size is tiny, is evenly distributed, and structure stability is high, and is combined well at alumina substrate.The intensity of cutting tool material, toughness, hardness, wear resistance and good fatigue property are significantly improved.
(2) chemical stability is good, can not decompose toxic gas or poisonous solute, the present invention because of strengthen whisker be with alumina particle in a vacuum reaction in－situ generate, the technology stability of production is high.
Accompanying drawing explanation
Fig. 1 is the projection electromicroscopic photograph of aluminum oxide-silicon carbide--zirconium carbide nano whisker enhancing cutting tool material of most preferred embodiment.
Embodiment
Provide most preferred embodiment of the present invention below: by the chemical composition of alumina matrix material and weight percent be: Al
2o
3: 99.99%.The content of the impurity such as strict control Fe, Cu, Al: Al
2o
3purity be more than or equal to 99.99%, the alumina powder prepared in proportion is added dehydrated alcohol and in ball mill, carries out mechanize ball milling 48 hours, obtain there is 50-150 μm of grain-size ultrafine powder.By aluminum oxide-silicon carbide--zirconium carbide whisker persursor material chemical composition and weight percent be: ZrO
2: 25.4 ~ 28.2%, Al:19.6 ~ 19.8%, SiO
2: 25.4 ~ 28.2%, C:20.2 ~ 22.6%, Mn:0.1 ~ 0.9%, NaCl:1.0 ~ 8.1%.The precursor composite powder that can generate aluminum oxide-silicon carbide--zirconium carbide whisker prepared in proportion is added dehydrated alcohol and in ball mill, carries out mechanize ball milling 48 hours, obtain and there is the ultra-fine precursor composite powder of 200-800nm grain-size.The proportions being 8:92 by weight percentage by aluminum oxide-silicon carbide--zirconium carbide whisker and alumina matrix material is aluminum oxide-silicon carbide--zirconium carbide crystal whisker toughened aluminum oxide bio-medical material powder.Then mechanical mixing is adopted to make alumina substrate powder and aluminum oxide-silicon carbide--zirconium carbide whisker powder Homogeneous phase mixing, 10 after mixed powder cold compaction
-6progressively bake out under holder vacuum condition, then at 550 DEG C, under 100Mpa condition, vacuum sintering 2 hours, then carries out T6 process, and carries out performance test, bending strength 674MPa, fracture toughness property 9.16MPam
1/2, Vickers' hardness 19.9GPa.
Claims (2)
1. the preparation method of aluminum oxide-silicon carbide--zirconium carbide nano whisker enhancing cutting tool material, it is characterized in that aluminum oxide-silicon carbide--zirconium carbide whisker reinforcement cutting tool material powder is by alumina matrix material powder and aluminum oxide-silicon carbide--zirconium carbide whisker powder constituent, then mechanical mixing is adopted to make alumina substrate powder and aluminum oxide-silicon carbide--zirconium carbide whisker powder Homogeneous phase mixing, 10 after mixed powder cold compaction
-6progressively bake out, then vacuum sintering 1-4 hour under 1500-1600 DEG C, 50-200Mpa condition under holder vacuum condition.
2. a kind of aluminum oxide-silicon carbide-according to claim 1-zirconium carbide nano whisker strengthens the preparation method of cutting tool material; it is characterized in that the precursor composite powder of aluminum oxide-silicon carbide--zirconium carbide nano whisker adds dehydrated alcohol and in ball mill, carries out mechanize ball milling 48 hours; acquisition has the ultra-fine precursor composite powder of 200-600nm grain-size; precursor powder is loaded in crystal vessel; under argon gas atmosphere protection and the temperature condition of 1550 DEG C-1800 DEG C, be incubated 90min-180min borolon-silicon carbide-carbon zirconium nano whisker.
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| CN201510716980.XA CN105272329B (en) | 2015-10-29 | 2015-10-29 | A kind of preparation method of alumina carbon SiClx zirconium carbide nano whisker enhancing cutting tool material |
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| CN201510716980.XA CN105272329B (en) | 2015-10-29 | 2015-10-29 | A kind of preparation method of alumina carbon SiClx zirconium carbide nano whisker enhancing cutting tool material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011700A (en) * | 2016-06-27 | 2016-10-12 | 山东建筑大学 | Preparing method of high-strength copper-based composite toughened by boron carbide and silicon carbide crystal whiskers |
| CN106116534A (en) * | 2016-06-27 | 2016-11-16 | 山东建筑大学 | A kind of nanocrystalline ceramics material preparing drawing mould |
| CN106588063A (en) * | 2016-11-29 | 2017-04-26 | 湖南省新化县恒生电子陶瓷有限责任公司 | High-strength and high anti-explosion aluminum oxide ceramic |
| CN109371339A (en) * | 2018-12-15 | 2019-02-22 | 山东建筑大学 | A kind of amorphous igneous rock ceramic base nano-diamond film drawing mould preparation method |
| CN110483085A (en) * | 2019-08-01 | 2019-11-22 | 广东工业大学 | A kind of whisker reinforcement alumina composite ceramic and the preparation method and application thereof |
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| CN1042858A (en) * | 1988-11-03 | 1990-06-13 | 钴碳化钨硬质合金公司 | Aluminium oxide-zirconium oxide-carbide whisker strengthens cutting tool |
| JPH0780709A (en) * | 1993-09-14 | 1995-03-28 | Riken Corp | Ceramic cutting tool and manufacture thereof |
| CN101880163A (en) * | 2009-05-07 | 2010-11-10 | 宁波大学 | Method for preparing silicon carbide whisker in-situ reinforced aluminum oxide ceramic |
| CN102584309A (en) * | 2012-02-15 | 2012-07-18 | 山东大学 | Titanium carbonitride series whisker toughed alumina-based ceramic cutter material powder synthesized by using carbothermal method and preparation technology thereof |
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2015
- 2015-10-29 CN CN201510716980.XA patent/CN105272329B/en not_active Expired - Fee Related
Patent Citations (4)
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| CN1042858A (en) * | 1988-11-03 | 1990-06-13 | 钴碳化钨硬质合金公司 | Aluminium oxide-zirconium oxide-carbide whisker strengthens cutting tool |
| JPH0780709A (en) * | 1993-09-14 | 1995-03-28 | Riken Corp | Ceramic cutting tool and manufacture thereof |
| CN101880163A (en) * | 2009-05-07 | 2010-11-10 | 宁波大学 | Method for preparing silicon carbide whisker in-situ reinforced aluminum oxide ceramic |
| CN102584309A (en) * | 2012-02-15 | 2012-07-18 | 山东大学 | Titanium carbonitride series whisker toughed alumina-based ceramic cutter material powder synthesized by using carbothermal method and preparation technology thereof |
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| 林广涌 等: ""SiCw/Al2O3陶瓷复合材料的力学性能与增韧机理"", 《兵器材料科学与工程》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011700A (en) * | 2016-06-27 | 2016-10-12 | 山东建筑大学 | Preparing method of high-strength copper-based composite toughened by boron carbide and silicon carbide crystal whiskers |
| CN106116534A (en) * | 2016-06-27 | 2016-11-16 | 山东建筑大学 | A kind of nanocrystalline ceramics material preparing drawing mould |
| CN106588063A (en) * | 2016-11-29 | 2017-04-26 | 湖南省新化县恒生电子陶瓷有限责任公司 | High-strength and high anti-explosion aluminum oxide ceramic |
| CN106588063B (en) * | 2016-11-29 | 2019-11-08 | 湖南省新化县恒生电子陶瓷有限责任公司 | A kind of high-intensitive, high explosion-proof aluminium oxide ceramics |
| CN109371339A (en) * | 2018-12-15 | 2019-02-22 | 山东建筑大学 | A kind of amorphous igneous rock ceramic base nano-diamond film drawing mould preparation method |
| CN110483085A (en) * | 2019-08-01 | 2019-11-22 | 广东工业大学 | A kind of whisker reinforcement alumina composite ceramic and the preparation method and application thereof |
| CN110483085B (en) * | 2019-08-01 | 2022-10-04 | 广东工业大学 | Whisker reinforced alumina composite ceramic and preparation method and application thereof |
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| CN105272329B (en) | 2017-12-15 |
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Granted publication date: 20171215 Termination date: 20211029 |