CN104211380B - A kind of Stupalox and preparation method thereof - Google Patents
A kind of Stupalox and preparation method thereof Download PDFInfo
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- CN104211380B CN104211380B CN201410390029.5A CN201410390029A CN104211380B CN 104211380 B CN104211380 B CN 104211380B CN 201410390029 A CN201410390029 A CN 201410390029A CN 104211380 B CN104211380 B CN 104211380B
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Abstract
The present invention relates to a kind of Stupalox and preparation method thereof, belong to new material technology field.Described Stupalox raw material is mainly grouped into by the one-tenth of following percentage by weight: Al2O3: 50 70%, ZrO2: 15 40%, sintering aid: 5 20%, described sintering aid is MgO, TiO2In one or both, described ZrO2Use Y2O3Or CeO2Stable, Y2O3Or CeO2Account for ZrO2Mass fraction be 2 4%.The preparation method of this Stupalox comprises the steps: to weigh raw material batch mixing by mass percentage；Raw material is pressed into pottery cutter blank；Pottery cutter blank is put into vacuum sintering furnace segmentation and is sintered insulation, after through stove cold Stupalox.Stupalox material combination of the present invention is rationally prepared by the preparation methods of the most simple to operate and energy-conserving and environment-protective so that it is have lightweight, and precision is high, and hardness, bending strength, fracture toughness are high, wearability and the strong advantage of chemical resistance.
Description
Technical field
The present invention relates to a kind of Stupalox, particularly relate to a kind of Stupalox and preparation is done
Method, belongs to new material technology field.
Background technology
Along with the continuous lifting of present city people's entirety quality of the life, various inhomogeneities
The ceramic product of type is widely used in the various aspects of life.Such as, the cutting edge of a knife or a sword of Stupalox
Profit degree is higher than tens times of general common steel knife, and antioxygenic property is fairly good, phase
Than other cutter product, stability is the highest, therefore makes in the middle of family kitchen
With more.Traditional steel edge, there are countless pore, meeting during cooking food materials in its surface
Have soup to residue in pore, and metallic element can oxidation and rusting, formed peculiar smell or
Metallic taste；Stupalox is the most nontoxic, pollution-free, do not aoxidize, non-corrosive, resistance to various
The organic corrosion such as soda acid, cuts vegetables or fruit, will not produce peculiar smell.
The document being related to Stupalox in prior art has Chinese invention patent application file
(publication number: CN103304233A), it disclose a kind of High-performance ceramic knife and
Preparation method, by weight percentage, it consists of the following composition: ZrO2And HfO2
Mixture 93-94wt%；Y2O3: 5-6wt%；Al2O3: 0.2-1wt%；This pottery
The preparation method of porcelain cutter is: first pass through dry-pressing formed prepared cutter blank；Then cutter blank is existed
It is warming up to 920-1080 DEG C under the programming rate of 0.5 DEG C/min, is incubated 2-4 hour；Connect
And be warming up to 1380-1540 DEG C under the programming rate of 1.5 DEG C/min, 2-4 is little in insulation
Time；Finally cooling prepares Stupalox.But the bending strength of this Stupalox only only has
1100MPa, it is impossible to meet the demand that people are the highest to Stupalox.
Summary of the invention
Present invention aims to defect present in prior art, it is provided that Yi Zhongchong
The Stupalox that amount is light, bending strength is high.
The above-mentioned purpose of the present invention is to implement by the following technical programs: a kind of pottery
Cutter, the raw material of described Stupalox is mainly grouped into by the one-tenth of following percentage by weight: Al2O3:
50-70%, ZrO2: 15-40%, sintering aid: 5-20%.
Stupalox of the present invention is with aluminum oxide as base material, compound with PSZ
On the basis of add sintering aid, effectively reduce sintering temperature, abnormal the most brilliant in suppression sintering
Grain length is big, particle re-arrangement and prevent Stupalox to ftracture during acceleration of sintering.The present invention
The material combination of Stupalox is more reasonable, improves while obtaining lightweight Stupalox
Its bending strength.
As preferably, described Al2O3Particle diameter be 5-10 μm, ZrO2Particle diameter be
0.5-0.8 μm, is combined by the powder of different-grain diameter, makes powder particle be more easy to be evenly distributed.
As preferably, described sintering aid is MgO, TiO2In one or both,
The particle diameter of described MgO is 8-15 μm, described TiO2Particle diameter be 0.1-0.5 μm.
As preferably, the raw material of described Stupalox is mainly by the composition of following percentage by weight
Composition: Al2O3: 55-65%, ZrO2: 20-35%, MgO:5-15%.At Stupalox
After adding MgO in material composition, can form magnesium aluminate spinel, it is positioned at crystal boundary, can rise
The effect got rid of to pinning crystal boundary, inhibiting grain growth and promotion pore, thus improve material
The intensity of material.
As preferably, the raw material of described Stupalox is mainly by the composition of following percentage by weight
Composition: Al2O3: 55-60%, ZrO2: 25-35%, TiO2: 8-15%.Work as TiO2
Can join in Stupalox raw material as sintering aid, sintering temperature can be effectively reduced
Degree, reduces the consumption of the energy, reduces production cost.
As preferably, the raw material of described Stupalox is mainly by the composition of following percentage by weight
Composition: Al2O3: 55-65%, ZrO2: 20-40%, MgO:3-10%, TiO2: 2-10%.
When sintering aid is MgO and TiO2During compounding use, it is accordingly required in particular to note MgO and TiO2
The amount of addition.If the MgO added is too much, the carrying out of sintering can be hindered, occur owing
Burning phenomenon, cause crystal development incomplete, the porosity rises, hydraulic performance decline；If but adding
The MgO entered is very few, then portion crystal can be caused thick and uneven, and hole of holding one's breath is more,
Consistency declines.And add TiO2Amount cross conference and hinder the direct contact of sintering phase particle,
Affecting the carrying out of mass transfer in sintering process, the amount of addition is too small is also unfavorable for entering of sintering
OK, so working as MgO and TiO2During compounding use, should be by MgO, TiO2Addition divide
Do not control at 3-10% and 2-10% accounting for whole Stupalox raw material.
As preferably, described ZrO2Use Y2O3Or CeO2Stable, Y2O3Or CeO2Account for
ZrO2Mass fraction be 2-4%.The present invention is by adding Y2O3Or CeO2As stable
Agent, makes zirconium oxide change to tetragonal structure from monoclinic form, obtains PSZ,
Improve zirconic stability.The crystal structure of PSZ is
The polycrystalline structure formed containing Emission in Cubic and monoclinic phase of main body, can improve the hard of Stupalox
The physical and chemical performances such as degree, intensity, toughness, wearability and chemical resistance.
Further object is that the preparation method that a kind of above-mentioned Stupalox is provided,
This preparation method comprises the steps:
S1: weigh raw material: weigh the raw material of Stupalox by following mass percent, will claim
The raw material taken is poured ball mill into and is carried out batch mixing, and wherein, the raw material of described Stupalox is main
It is grouped into by the one-tenth of following percentage by weight: Al2O3: 50-70%, ZrO2: 15-40%,
Sintering aid: 5-20；
S2: compressing: uniform for above-mentioned batch mixing Stupalox raw material is used isostatic cool pressing
It is pressed into pottery cutter blank；
S3: sintering: put in vacuum sintering furnace by pottery cutter blank, presses (0.5-1) DEG C/min
The pre-burning of heating rate elder generation to 1000-1200 DEG C, at 1000-1200 DEG C be incubated 1-2h,
Then it is heated to 1450-1600 DEG C by the heating rate of (1.5-3) DEG C/min,
Be incubated 2-4 hour at 1450-1600 DEG C, after cold through stove, obtain finished product Stupalox.
The present invention by rational for compatibility Stupalox raw material by use isostatic cool pressing method
Being pressed into the ceramic cutter blank that even density is consistent, the method need not add profit in powder
Lubrication prescription, it is possible to both reduced the pollution to goods, and simplified again manufacturing process, it is also possible to fall
Low production cost.Additionally, pottery cutter blank of the present invention first pre-burning before sintering, pottery can be made
In cutter blank, aluminum oxide is by r-Al2O3It is changed into a-Al as far as possible2O3, body caused by transformation
Amassing and can complete when being contracted in pre-burning, the method that elder generation of the present invention pre-burning re-sinters can reduce
The cracking of Stupalox, the size making Stupalox is more accurate, protects the property levying Stupalox further
Energy.
As preferably, the mixing time described in step S1 is 45-120min, passes through ball
Grinding machine carries out batch mixing, ensures that raw material mixes.
As preferably, the pressure of the isostatic cool pressing described in step S2 is 50-60Mpa.
As preferably, the red described sintering process of step S3 is at (0.6-0.8) DEG C/min
Heating rate under first pre-burning to 1100-1150 DEG C, be incubated 1-2h at this temperature,
Then the heating rate at (1.8-2.5) DEG C/min is heated to 1450-1600 DEG C,
It is incubated 2-4 hour at a temperature of this.
The invention have the advantages that
1, the Stupalox of the present invention is lightweight, and precision is high, and long-durability sharp is easy to use,
Need not whet a knife, do not produce peculiar smell, during use, keep the genuineness of food.
2, the Stupalox of the present invention has higher hardness, bending strength, fracture toughness,
Good wearability and chemical resistance.
3, the preparation method of the Stupalox of the present invention is simple to operate, energy-conserving and environment-protective.
Detailed description of the invention
The following is the specific embodiment of the present invention, technical scheme is made into one
The description of step, but the present invention is not limited to these embodiments.
Table 1: embodiment of the present invention 1-3 Stupalox
The constituent of raw material and percentage by weight
Embodiment 1
Weigh raw material: by the constituent of Stupalox raw material described in table 1 embodiment 1
And mass percent weighs raw material, pour the raw material weighed into ball mill and mix
Material 60min；Wherein said Al2O3Particle diameter be 5 μm, ZrO2Particle diameter be
0.5 μm, the particle diameter of MgO is 8 μm, TiO2Particle diameter be 0.1 μm, ZrO2Steady
Determining agent is Y2O3, Y2O3Account for ZrO2Mass fraction be 2%；
Compressing: uniform for above-mentioned batch mixing Stupalox raw material employing isostatic cool pressing is existed
Pottery cutter blank it is pressed under 55MPa；
Sintering: put in vacuum sintering furnace by pottery cutter blank, by the intensification speed of 0.8 DEG C/min
The pre-burning that takes the lead in, to 1100 DEG C, is incubated 2h, then by the intensification of 2.5 DEG C/min at 110 DEG C
Speed is heated to 1500 DEG C, is incubated 3 hours at 1500 DEG C, after cold through stove, must become
Product Stupalox.
Embodiment 2
Weigh raw material: by the constituent of Stupalox raw material described in table 1 embodiment 2
And mass percent weighs raw material, pour the raw material weighed into ball mill and mix
Material 80min；Wherein said Al2O3Particle diameter be 7 μm, ZrO2Particle diameter be
0.6 μm, the particle diameter of MgO is 10 μm, TiO2Particle diameter be 0.3 μm, ZrO2Steady
Determining agent is CeO2, CeO2Account for ZrO2Mass fraction be 3%；
Compressing: uniform for above-mentioned batch mixing Stupalox raw material employing isostatic cool pressing is existed
Pottery cutter blank it is pressed under 58MPa；
Sintering: put in vacuum sintering furnace by pottery cutter blank, by the intensification speed of 0.6 DEG C/min
The pre-burning that takes the lead in, to 1150 DEG C, is incubated 1h, then by the intensification speed of 2 DEG C/min at 1150 DEG C
Rate is heated to 1550 DEG C, is incubated 3 hours at 1550 DEG C, after cold through stove, obtain finished product
Stupalox.
Embodiment 3
Weigh raw material: by the constituent of Stupalox raw material described in table 1 embodiment 3
And mass percent weighs raw material, pour the raw material weighed into ball mill and mix
Material 120min；Wherein said Al2O3Particle diameter be 10 μm, ZrO2Particle diameter be
0.8 μm, the particle diameter of MgO is 15 μm, TiO2Particle diameter be 0.5 μm, ZrO2's
Stabilizer is Y2O3, Y2O3Account for ZrO2Mass fraction be 4%；
Compressing: uniform for above-mentioned batch mixing Stupalox raw material employing isostatic cool pressing is existed
Pottery cutter blank it is pressed under 60MPa；
Sintering: put in vacuum sintering furnace by pottery cutter blank, by the intensification speed of 0.5 DEG C/min
The pre-burning that takes the lead in, to 1000 DEG C, is incubated 2h, then by the intensification of 1.5 DEG C/min at 1000 DEG C
Speed is heated to 1450 DEG C, is incubated 2 hours at 1450 DEG C, after cold through stove, must become
Product Stupalox.
Embodiment 4
Weigh raw material: by the constituent of Stupalox raw material described in table 1 embodiment 4
And mass percent weighs raw material, pour the raw material weighed into ball mill and mix
Material 50min；Wherein said Al2O3Particle diameter be 6 μm, ZrO2Particle diameter be
0.6 μm, the particle diameter of MgO is 12 μm, TiO2Particle diameter be 0.4 μm, ZrO2Steady
Determining agent is CeO2, CeO2Account for ZrO2Mass fraction be 4%；
Compressing: uniform for above-mentioned batch mixing Stupalox raw material employing isostatic cool pressing is existed
Pottery cutter blank it is pressed under 50MPa；
Sintering: pottery cutter blank is put in vacuum sintering furnace, by the heating rate of 1 DEG C/min
First pre-burning, to 1200 DEG C, is incubated 1h, then by the heating rate of 3 DEG C/min at 1200 DEG C
Be heated to 1600 DEG C, at 1600 DEG C, be incubated 2 hours, after cold through stove, obtain finished product pottery
Porcelain cutter.
Stupalox embodiment of the present invention 1-4 prepared is common with prior art
Stupalox carry out performance test and compare, result is as shown in table 2.
Table 2: the performance test results of the Stupalox that embodiment of the present invention 1-4 prepares
As known from Table 2, the Stupalox combination property that the present invention prepares is superior, tool
Have good bending strength, fracture toughness and lighter weight, bending strength up to
1185-1238Mpa, fracture toughness up to 8.5-8.8MPa m1/2, density is
4.54-4.60g/cm3, performance is far superior to Stupalox common in prior art, has
Good marketing prospect.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Described can be embodied as by those skilled in the art
Example is made various amendment or supplements or use similar mode to substitute, but without departing from this
Invention spirit or surmount scope defined in appended claims.
It is embodied as although the present invention having been made a detailed description and having quoted some as proof
Example, but to those skilled in the art, as long as without departing from the essence of the present invention
God and scope can make various changes or revise is obvious.
Claims (5)
1. a Stupalox, it is characterised in that the raw material of described Stupalox is mainly grouped into by the one-tenth of following percentage by weight: Al2O3: 50-70%, ZrO2: 15-40%, sintering aid: 5-20%；
Described Al2O3Particle diameter be 5-10 μm, described ZrO2Particle diameter be 0.5-0.8 μm；
Described sintering aid is MgO, TiO2In two kinds, and MgO:3-10%, TiO2: 2-10%；
The particle diameter of described MgO is 8-15 μm, described TiO2Particle diameter be 0.1-0.5 μm.
Stupalox the most according to claim 1, it is characterised in that the raw material of described Stupalox is mainly grouped into by the one-tenth of following percentage by weight: Al2O3: 55-65%, ZrO2: 20-40%, MgO:3-10%, TiO2: 2-10%.
Stupalox the most according to claim 1, it is characterised in that described ZrO2Use Y2O3Or CeO2Stable, Y2O3Or CeO2Account for ZrO2Mass fraction be 2-4%.
4. the preparation method of a Stupalox as claimed in claim 1, it is characterised in that described preparation method comprises the steps:
S1: weigh raw material: weigh the raw material of Stupalox by following mass percent, pours the raw material weighed ball mill into and carries out batch mixing, and wherein, the raw material of described Stupalox is mainly grouped into by the one-tenth of following percentage by weight: Al2O3: 50-70%, ZrO2: 15-40%, sintering aid: 5-20%, described sintering aid is MgO, TiO2In two kinds, and MgO:3-10%, TiO2: 2-10%；
S2: compressing: uniform for above-mentioned batch mixing Stupalox raw material employing isostatic cool pressing is pressed into pottery cutter blank；
S3: sintering: pottery cutter blank is put in vacuum sintering furnace, by the heating rate elder generation pre-burning of (0.5-1) DEG C/min to 1000-1200 DEG C, 1-2h it is incubated at 1000-1200 DEG C, then it is heated to 1450-1600 DEG C by the heating rate of (1.5-3) DEG C/min, it is incubated 2-4 hour at 1450-1600 DEG C, after cold through stove, obtain finished product Stupalox.
The preparation method of Stupalox the most according to claim 4, it is characterised in that the pressing pressure described in step S2 is 50-60MPa.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104529404A (en) * | 2014-12-20 | 2015-04-22 | 佛山铭乾科技有限公司 | Ceramic knife and preparation method thereof |
| CN106518023A (en) * | 2015-09-14 | 2017-03-22 | 扬州北方三山工业陶瓷有限公司 | High-strength and high-toughness AZ bulletproof ceramics and preparation method thereof |
| CN106518068A (en) * | 2016-11-10 | 2017-03-22 | 佛山蓝途科技有限公司 | High-strength composite ceramic tool and preparation method thereof |
| CN106587949A (en) * | 2016-12-14 | 2017-04-26 | 苏州耐思特塑胶有限公司 | Ceramic material for cutters and preparation method of ceramic material |
| CN107266048B (en) * | 2017-06-29 | 2020-09-18 | 绵阳市美汇科技有限公司 | Special wear-resistant ceramic material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377852A (en) * | 2001-03-30 | 2002-11-06 | 中国科学院化工冶金研究所 | Al2O3-titanium carbide base nano composite ceramic and its preparing method |
| CN1709826A (en) * | 2005-05-30 | 2005-12-21 | 东北大学 | Al2O3/ZrO2 (Y2O3) nano composite ceramic tool material and its preparing method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377852A (en) * | 2001-03-30 | 2002-11-06 | 中国科学院化工冶金研究所 | Al2O3-titanium carbide base nano composite ceramic and its preparing method |
| CN1709826A (en) * | 2005-05-30 | 2005-12-21 | 东北大学 | Al2O3/ZrO2 (Y2O3) nano composite ceramic tool material and its preparing method |
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