CN105272329B - A kind of preparation method of alumina carbon SiClx zirconium carbide nano whisker enhancing cutting tool material - Google Patents
A kind of preparation method of alumina carbon SiClx zirconium carbide nano whisker enhancing cutting tool material Download PDFInfo
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- CN105272329B CN105272329B CN201510716980.XA CN201510716980A CN105272329B CN 105272329 B CN105272329 B CN 105272329B CN 201510716980 A CN201510716980 A CN 201510716980A CN 105272329 B CN105272329 B CN 105272329B
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- aluminum oxide
- zirconium carbide
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Abstract
The invention belongs to cutter material field, is related to a kind of cutting tool material, particularly a kind of preparation method of alumina carbon SiClx zirconium carbide nano whisker enhancing cutting tool material.In-situ preparation alumina carbon SiClx zirconium carbide whisker reinforcement cutting tool material powder is by alumina matrix material powder and alumina carbon SiClx zirconium carbide whisker powder constituent, then alumina substrate powder is made uniformly to be mixed with alumina carbon SiClx zirconium carbide whisker powder using mechanical mixing, 10 after mixed-powder cold compaction‑6Degasification is progressively heated under support vacuum condition, then vacuum-sintering 14 hours under the conditions of 1,500 1600 DEG C, 50 200Mpa.It is tiny to strengthen nano whisker diameter dimension, is evenly distributed, structure stability is high, and surface no-pollution, intensity, toughness, hardness, wearability and the good fatigue behaviour of cutting tool material are significantly improved.
Description
Technical field
The invention belongs to cutter material field, it is related 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 the blanking of blank, the preparation of part with
And it is indispensable in the use of equipment manufacture, middle usage amount is very big in the industrial production, and cutting tool requires high hardness
And wearability, wherein hardness are high（HRC≥58-64）, cutter is just can guarantee that when machined material is deformed, and cutter is in itself not
It is deformed and ftractures, high wearability is that mould long-term use is not out of shape, and high-wearing feature is based on high rigidity.Simultaneously
It is required that there is enough strength and toughnesses, high intensity can improve the resistance of deformation of cutter, and high toughness is prevented under shock loading
Brittle failure.Also require there is good fatigue behaviour and good bite-resistant ability.
Cutting tool material is broadly divided into high-speed steel, hard alloy and NEW TYPES OF TOOL MATERIALS, cutting tool material of the present invention
Matrix be aluminum oxide, for require high rigidity and wearability, high heat resistance, high chemical stability and relatively low rub
Coefficient is wiped, the present invention is NEW TYPES OF TOOL MATERIALS, and aluminum oxide-silicon carbide-zirconium carbide nano whisker is used on the matrix of aluminum oxide
Enhancing, a kind of new cutting tool material obtained at high temperature.
The existing cutting tool in China, using growth in situ α-sialon, reduces intergranular in patent 102233594 at present
Phase, activeness and quietness, its tool matrix material are silicon nitride, are the mutual enhancing between ceramic phase.And further improve cutting
Cutter hardness and wear resistance, heat resistance need further research, are achieved in recent years very using whisker reinforcement cutting tool material
Big progress, the present invention utilize the good characteristic of three kinds of different materials of aluminum oxide-silicon carbide-zirconium carbide, pass through in-situ preparation three
The nano whisker of kind material, reaching toughness reinforcing by nano whisker strengthens cutting tool material, and the present invention can significantly improve cutting
Intensity, toughness, hardness, wearability and the good fatigue behaviour of cutter, there is important industrial application value and be widely applied neck
Domain.
The content of the invention
The purpose of patent of the present invention is：It is to overcome above-mentioned prior art deficiency, there is provided a kind of stable processing technology, production
Cost is cheap, non-pollution discharge, the aluminum oxide-silicon carbide-zirconium carbide nano whisker enhancing that production can be organized under normal conditions
The preparation method of cutting tool material, more traditional ceramic cutter have high hardness and wear resistance, high heat resistance, high
Chemical stability and relatively low coefficient of friction.
The invention provides a kind of in-situ preparation aluminum oxide-silicon carbide-zirconium carbide whisker reinforcement cutting tool material, and it is special
Sign is：The material forms the aluminum oxide-silicon carbide-zirconium carbide whisker and alumina matrix material aligned along extruding streamline
Composition, diameter of whiskers 200-800nm, the volume total amount of In-sltu reinforcement phase is in 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
Cutter material powder is by alumina matrix material powder and aluminum oxide-silicon carbide-zirconium carbide whisker powder constituent, then using machine
Tool mixing method makes alumina substrate powder uniformly be mixed with aluminum oxide-silicon carbide-zirconium carbide whisker powder, mixed-powder cold compaction
Afterwards 10-6Degasification is progressively heated under support vacuum condition, then the vacuum-sintering 1-4 under the conditions of 1500-1600 DEG C, 50-200Mpa
Hour.
Test shows that obtained in-situ preparation aluminum oxide-silicon carbide-zirconium carbide whisker reinforcement cutting tool material has
High-strength tenacity.
Scheme material requested is prepared by following specific steps：
（1）The 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 percentage by weight are：ZrO2：25.4~28.2%, Al：19.6~19.8%, SiO2：
25.4~28.2%, C：20.2~22.6%, Mn：0.1~0.9%, NaCl：1.0~8.1%.Can by what is prepared in proportion
The precursor composite powder of generation aluminum oxide-silicon carbide-zirconium carbide whisker adds absolute ethyl alcohol to carry out mechanization ball in ball mill
Mill 48 hours, acquisition have the ultra-fine precursor composite powder of 200-600nm crystallite dimensions, powder are fitted into crystal vessel,
Argon gas atmosphere is protected under the temperature conditionss with 1550 DEG C -1800 DEG C, insulation 90min-180min synthesis.
Si+C=（Heating）SiC
ZrO2+3C=（Heating）ZrC+2CO↑
4Al+3O2=（Heating）2Al2O3
（2）It is prepared by alumina matrix material powder：
The chemical composition and percentage by weight of alumina matrix material be：Al2O3：99.99%.The present invention is optimal to obtain
Comprehensive mechanical property and biology corrosive nature, strictly control the content of the impurity such as Fe, Cu, Al：Al2O3 degree of purity is big
In equal to 99.99%.Alumina powder adds absolute ethyl alcohol to carry out mechanization ball milling in ball mill 48 hours, and acquisition has 50-
100 μm of crystallite dimension superfines.
（3）Aluminum oxide-silicon carbide-zirconium carbide whisker
With alumina matrix material mixed-powder：
Weight content of the aluminum oxide-silicon carbide-zirconium carbide in cutting tool material is 5-10%, by aluminum oxide-titanium carbide
Silico-carbo zirconium whisker and alumina matrix material are 5-10 by weight percentage:95-90 ratio is formulated as aluminum oxide-titanium carbide
Silico-carbo zirconium whisker reinforcement cutting tool material powder.
The in-situ preparation aluminum oxide-silicon carbide-zirconium carbide whisker reinforcement cutting tool material is without special equipment, in routine
Alumina producer can be organized to produce, and small investment of the present invention is quick, and can quickly recoup capital outlay cost.
Compared with existing aluminium oxide ceramics cutting tool material, in-situ preparation aluminum oxide-silicon carbide-zirconium carbide is crystal whisker toughened
The preparation method of aluminum oxide has the following advantages that：
（1）Toughness, wearability, intensity significantly improve, and the poor mechanical property of the 2 hours extruded samples in interval is less than 6%, and this will
Be advantageous to high-volume, the steady production of small size dentistry material.It is tiny to strengthen particle size, is evenly distributed, tissue stabilization
Property it is high, with being well combined in alumina substrate.Intensity, toughness, hardness, wearability and the good fatigue behaviour of cutting tool material obtain
To significantly improving.
（2）Chemical stability is good, will not decompose toxic gas or poisonous dissolved matter, and the present invention is and oxidation because of enhancing whisker
Reaction in-situ generates alumina particles in a vacuum, and the technology stability of production is high.
Brief description of the drawings
Fig. 1 is the projection of aluminum oxide-silicon carbide-zirconium carbide nano whisker enhancing cutting tool material of most preferred embodiment
Electromicroscopic photograph.
Embodiment
Highly preferred embodiment of the present invention is given below：It is by the chemical composition and percentage by weight of alumina matrix material：
Al2O3：99.99%.The content of the impurity such as strict control Fe, Cu, Al：Al2O3Degree of purity be more than or equal to 99.99%, will be by
The alumina powder that ratio is prepared adds absolute ethyl alcohol to carry out mechanization ball milling in ball mill 48 hours, and obtaining has 50-150 μm
Crystallite dimension superfines.It is by aluminum oxide-silicon carbide-zirconium carbide whisker persursor material chemical composition and percentage by weight：
ZrO2：25.4~28.2%, Al：19.6~19.8%, SiO2：25.4~28.2%, C：20.2~22.6%, Mn：0.1~
0.9%, NaCl：1.0~8.1%.The precursor that can generate aluminum oxide-silicon carbide-zirconium carbide whisker that will be prepared in proportion
Composite powder adds absolute ethyl alcohol to carry out mechanization ball milling in ball mill 48 hours, and obtaining, there is 200-800nm crystallite dimensions to surpass
Thin precursor composite powder.It is 8 by weight percentage by aluminum oxide-silicon carbide-zirconium carbide whisker and alumina matrix material:92
Ratio be formulated as aluminum oxide-silicon carbide-zirconium carbide crystal whisker toughened aluminum oxide bio-medical material powder.Then it is mixed using machinery
It is legal alumina substrate powder is uniformly mixed with aluminum oxide-silicon carbide-zirconium carbide whisker powder, after mixed-powder cold compaction
10-6Degasification is progressively heated under support vacuum condition, then at 550 DEG C, vacuum-sintering 2 hours under the conditions of 100Mpa, then carries out T6
Processing, and performance test is carried out, bending strength 674MPa, fracture toughness 9.16MPam1/2, Vickers hardness 19.9GPa.
Claims (1)
- A kind of 1. preparation method of aluminum oxide-silicon carbide-zirconium carbide nano whisker enhancing cutting tool material, it is characterized in that oxidation Aluminum/silicon carbide-zirconium carbide nano whisker strengthens cutting tool material powder by alumina matrix material powder and aluminum oxide-titanium carbide Silico-carbo zirconium nano whisker powder constituent, then using mechanical mixing make alumina substrate powder and aluminum oxide-silicon carbide- Zirconium carbide nano whisker powder uniformly mixes, 10 after mixed-powder cold compaction-6Degasification is progressively heated under support vacuum condition, then The vacuum-sintering 1-4 hours under the conditions of 1500-1600 DEG C, 50-200Mpa, aluminum oxide-silicon carbide-zirconium carbide nano whisker enhancing Cutting tool material forms the aluminum oxide-silicon carbide-zirconium carbide nano whisker and alumina substrate aligned along extruding streamline Material forms, diameter of whiskers 200-800nm；（a）The preparation technology of the aluminum oxide-silicon carbide-zirconium carbide nano whisker powder is：Aluminum oxide-silicon carbide-zirconium carbide Nano whisker persursor material chemical composition and percentage by weight are：ZrO2：25.4~28.2%, Al：19.6~19.8%, SiO2：25.4~28.2%, C：20.2~22.6%, Mn：0.1~0.9%, NaCl：1.0~8.1%, by what is prepared in proportion The precursor composite powder that aluminum oxide-silicon carbide-zirconium carbide nano whisker can be generated adds absolute ethyl alcohol to be carried out in ball mill Mechanization ball milling 48 hours, acquisition have the ultra-fine precursor composite powder of 200-600nm crystallite dimensions, and powder is loaded into graphite holds In device, under argon gas atmosphere protection and 1550 DEG C -1800 DEG C of temperature conditionss, insulation 90min-180min synthesis；（b）The alumina matrix material powder process is：The chemical composition and percentage by weight of alumina matrix material For：Al2O3：99.99%, alumina powder adds absolute ethyl alcohol to carry out mechanization ball milling in ball mill 48 hours, is had 50-100 μm of crystallite dimension superfines；（c）The aluminum oxide-silicon carbide-zirconium carbide nano whisker is with alumina matrix material mixed-powder preparation technology：Will Aluminum oxide-silicon carbide-zirconium carbide whisker and alumina matrix material are 5-10 by weight percentage:95-90 ratio is formulated as Aluminum oxide-silicon carbide-zirconium carbide whisker reinforcement cutting tool material powder.
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| CN106011700B (en) * | 2016-06-27 | 2017-08-04 | 山东建筑大学 | The preparation method of boron carbide silicon carbide whisker toughness reinforcing high-strength copper based composites |
| CN106116534A (en) * | 2016-06-27 | 2016-11-16 | 山东建筑大学 | A kind of nanocrystalline ceramics material preparing drawing mould |
| 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 |
| CN109371339B (en) * | 2018-12-15 | 2023-05-16 | 山东建筑大学 | Preparation method of amorphous igneous rock ceramic matrix nano diamond film drawing die |
| 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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|---|---|---|---|---|
| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2925899B2 (en) * | 1993-09-14 | 1999-07-28 | 株式会社リケン | Ceramic cutting tool and its manufacturing method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
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| "SiCw/Al2O3陶瓷复合材料的力学性能与增韧机理";林广涌 等;《兵器材料科学与工程》;19920731;第15卷(第7期);第17-21页 * |
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