CN103525366A - Preparation method of zirconium oxide-aluminum oxide core-shell structure grinding balls - Google Patents
Preparation method of zirconium oxide-aluminum oxide core-shell structure grinding balls Download PDFInfo
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- CN103525366A CN103525366A CN201310443506.5A CN201310443506A CN103525366A CN 103525366 A CN103525366 A CN 103525366A CN 201310443506 A CN201310443506 A CN 201310443506A CN 103525366 A CN103525366 A CN 103525366A
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Abstract
The invention discloses a preparation method of zirconium oxide-aluminum oxide core-shell structure grinding balls, which comprises the following steps: selecting aluminum oxide powder, an organic solvent and a binder, and uniformly mixing according to a certain proportion; filling a grinder with a certain quantity of zirconium oxide grinding balls; grinding the uniform mixture of the aluminum oxide and the organic solvent by the grinder; uniformly covering the surface of the zirconium oxide grinding balls with the aluminum oxide powder; drying the grinding balls and removing the solvent; and performing high-temperature sintering and polishing to obtain the zirconium oxide-aluminum oxide core-shell structure grinding balls. By adopting the method disclosed by the invention, the stacking density of the prepared zirconium oxide-aluminum oxide core-shell structure grinding balls is over 40% higher than that of the same type of aluminum oxide grinding balls, the grinding efficiency can be effectively improved, and impurity introduction in dispersing the aluminum oxide powder is remarkably reduced.
Description
Technical field
The present invention relates to a kind of material manufacturing method, especially a kind of material manufacturing method of Zirconia-alumina nucleocapsid structure.
Background technology
At present, the mill ball of zirconium white and aluminum oxide material respectively has feature, and after zirconia ceramics sintering, density is more than 6.0g/cm3, and tap density is approximately 3.2～4.0g/cm
3, after the sintering of alumina-ceramic, density is approximately 3.9 g/cm3 by contrast, and tap density is approximately 2.0～2.5g/cm
3.When being applied to the grinding distribution of ceramic powder, zirconium oxide abrasive ball has higher mill efficiency conventionally.And on the other hand, while relating to the Application Areass such as alumina transparent ceramic, very high to alumina powder jointed purity requirement, generally can require more than 99.99%.Alpha-alumina powder can produce in process of production conventionally reunites or particle adhesion phenomenon, particularly powder during to nano level, very difficult dispersion.If use zirconium oxide abrasive ball, grinding effect is better, but can in process of lapping, introduce the impurity such as zirconium, yttrium, reduces nano alumina powder jointed purity; If use alumina ceramic grinding ball, mill efficiency can be lower, needs grinding for a long time, and mill efficiency is lower.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of manufacture method of Zirconia-alumina nucleocapsid structure mill ball, higher more than 40% than the alumina ceramic grinding ball tap density of same model, can effectively improve mill efficiency.
The technical solution adopted in the present invention is:
A manufacture method for Zirconia-alumina nucleocapsid structure mill ball, comprises the following steps:
1) selective oxidation aluminium powder body, organic solvent, binding agent, mix according to a certain percentage;
2) in shredder grinding chamber, fill a certain amount of zirconium oxide abrasive ball;
3) uniform mixture aluminum oxide and organic solvent being formed, by the shredder of high-speed cruising, treats that aluminum oxide covers the surface of zirconium oxide abrasive ball equably, then mill ball is dried, and gets rid of solvent;
4) mill ball after drying is carried out to high temperature sintering;
5), by mill ball polishing, form the mill ball finished product of Zirconia-alumina nucleocapsid structure.
Described in step 1) alumina powder jointed median size be 30-200nm, crystalline phase is α phase.Described alcohols is ethanol or Virahol.
Described organic solvent is under normal temperature, to be the alcohols of liquid, and the weight ratio of zirconium oxide abrasive ball and alcohol is 1 ~ 4, and alumina powder jointed and weight ratio zirconia ball need to meet following relation:
1.65h/R≤W2/W1≤1.95h/R
W2-aluminum oxide powder weight, g; W1-zirconia ball weight, g;
Thickness of the shell after h-sintering, cm; The radius of R-zirconia ball, cm.
Described binding agent is polyoxyethylene glycol or polyvinyl alcohol, and by alumina weight, binder dosage is≤1.0wt%.
Step 2) shredder described in, is a kind of of the basket grinding machine that can fill zirconia ball, planetary mills, jar mill, ball mill, and the volume loading level of zirconium oxide abrasive ball is≤60%.
The abrasive wire speed of shredder described in step 3) is 1-5m/s; The milling time of the uniform mixture that aluminum oxide and organic solvent form is 0.5-5 hours.
High temperature sintering temperature described in step 4) is 1500 ± 50 ℃, temperature rise rate≤3 ℃/min, and the heat preservation sintering time is 2-6 hours.
Compared with prior art, advantage of the present invention is: the mill ball of Zirconia-alumina nucleocapsid structure is higher more than 40% than the alumina lap accumulation ball density of same model, under equal abrasive wire speed, the grinding distribution time can significantly be shortened, significantly improve dispersion efficiency, be applicable to grind high viscosity, strong material of reuniting.During particularly for the grinding of high purity alumina powder, can significantly improve the purity of powder.Process for making is simple, when the mill ball surface alumina oxide serious wear of nucleocapsid structure, can to it, carry out repair process by method provided by the invention, and zirconium oxide abrasive ball is recycled.
Embodiment
Embodiment mono-: get the about 100nm of particle diameter, specific surface area=13.5m
2the alpha-phase aluminum oxide powder 100g of/g, polyoxyethylene glycol (PEG-400) 0.8g and 500g ethanol mix and form muddy slurry, pour in planet grinding jar, the zirconium oxide abrasive ball 200g that adds diameter 0.3mm, setting rotating speed is 320rpm, grind 3 hours, liquid phase goes out mill ball with strainer filtering after becoming clearly, then in baking oven with at 60 ℃, dries 3h.Then the mill ball after drying is calcined to 2h at 1500 ℃, temperature rise rate is 1.5 ℃/min.Mill ball after calcining is carried out can obtaining after polishing to the Zirconia-alumina mill ball of nucleocapsid structure, approximately 80 microns of aluminium oxide shell thickness.
Embodiment bis-: get the about 200nm of particle diameter, specific surface area=8.12m
2the alpha-phase aluminum oxide powder 100g of/g, polyvinyl alcohol (PVA1799) 0.3g and 400g Virahol mix and form muddy slurry, pour in planet grinding jar, the zirconium oxide abrasive ball 200g that adds diameter 0.8mm, setting rotating speed is 240rpm, grind 4 hours, liquid phase goes out mill ball with strainer filtering after becoming clearly, then in baking oven with at 70 ℃, dries 4h.Then the mill ball after drying is calcined to 6h at 1550 ℃, temperature rise rate is 3 ℃/min.Mill ball after calcining is carried out can obtaining after polishing to the Zirconia-alumina mill ball of nucleocapsid structure, approximately 100 microns of aluminium oxide shell thickness.
Embodiment tri-: get the about 60nm of particle diameter, specific surface area=17.46m
2the alpha-phase aluminum oxide powder 5kg of/g, polyoxyethylene glycol (PEG400) 30g and 20kg ethanol mix and form muddy slurry, pour in the ball mill ball grinder of 50L, the zirconium oxide abrasive ball 8kg that adds again diameter 2.0mm, after sealing, setting rotating speed is 110rpm, grinds 5 hours, after liquid phase becomes clearly, with strainer filtering, go out mill ball, then in baking oven with at 70 ℃, dry 4h.Then the mill ball after drying is calcined to 6h at 1450 ℃, temperature rise rate is 3 ℃/min.Mill ball after calcining is carried out can obtaining after polishing to the Zirconia-alumina mill ball of nucleocapsid structure, approximately 330 microns of aluminium oxide shell thickness.
Claims (8)
1. a manufacture method for Zirconia-alumina nucleocapsid structure mill ball, is characterized in that comprising the following steps:
1) selective oxidation aluminium powder body, organic solvent, binding agent, mix according to a certain percentage;
2) in shredder grinding chamber, fill a certain amount of zirconium oxide abrasive ball;
3) uniform mixture aluminum oxide and organic solvent being formed, by the shredder of high-speed cruising, treats that aluminum oxide covers the surface of zirconium oxide abrasive ball equably, then mill ball is dried, and gets rid of solvent;
4) mill ball after drying is carried out to high temperature sintering;
5), by mill ball polishing, form the mill ball finished product of Zirconia-alumina nucleocapsid structure.
2. the manufacture method of a kind of Zirconia-alumina nucleocapsid structure mill ball according to claim 1, it is characterized in that described in step 1) alumina powder jointed median size be 30-200nm, crystalline phase is α phase.
3. a kind of manufacture method of Zirconia-alumina nucleocapsid structure mill ball according to claim 1, it is characterized in that the organic solvent described in step 1) is under normal temperature, to be the alcohols of liquid, the weight ratio of zirconium oxide abrasive ball and alcohol is 1 ~ 4, and alumina powder jointed and weight ratio zirconia ball need to meet following relation:
1.65h/R≤W2/W1≤1.95h/R
W2-aluminum oxide powder weight, g; W1-zirconia ball weight, g;
Thickness of the shell after h-sintering, cm; The radius of R-zirconia ball, cm.
4. a kind of manufacture method of Zirconia-alumina nucleocapsid structure mill ball according to claim 1, is characterized in that the binding agent described in step 1) is polyoxyethylene glycol or polyvinyl alcohol, and by alumina weight, binder dosage is≤1.0wt%.
5. a kind of manufacture method of Zirconia-alumina nucleocapsid structure mill ball according to claim 1, it is characterized in that step 2) described in shredder, be a kind of of the basket grinding machine that can fill zirconia ball, planetary mills, jar mill, ball mill, the volume loading level of zirconium oxide abrasive ball is≤60%.
6. a kind of manufacture method of Zirconia-alumina nucleocapsid structure mill ball according to claim 1, the abrasive wire speed that it is characterized in that shredder described in step 3) is 1-5m/s; The milling time of the uniform mixture that aluminum oxide and organic solvent form is 0.5-5 hours.
7. a kind of manufacture method of Zirconia-alumina nucleocapsid structure mill ball according to claim 1, is characterized in that the high temperature sintering temperature described in step 4) is 1500 ± 50 ℃, temperature rise rate≤3 ℃/min, and the heat preservation sintering time is 2-6 hours.
8. according to the manufacture method of a kind of Zirconia-alumina nucleocapsid structure mill ball described in claim 1 or 3, it is characterized in that the alcohols described in step 1) is ethanol or Virahol.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352984A (en) * | 2017-08-23 | 2017-11-17 | 朱建良 | A kind of preparation method of mill ball |
| CN109503132A (en) * | 2018-12-29 | 2019-03-22 | 山东天汇研磨耐磨技术开发有限公司 | A kind of increasing magnetic lubrication is high to grind covering ceramic grinding ball and its manufacturing method |
| CN112794733A (en) * | 2021-02-09 | 2021-05-14 | 洛阳润宝研磨材料有限公司 | Preparation method of zirconium film grinding material |
| CN113563803A (en) * | 2021-08-31 | 2021-10-29 | 昆山捷纳电子材料有限公司 | Polishing solution containing alumina-boron carbide hybrid particles and preparation method thereof |
| CN116217270A (en) * | 2022-12-26 | 2023-06-06 | 何思义 | Production process of diamond film coated dielectric ball with surface of zirconia ball |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107352984A (en) * | 2017-08-23 | 2017-11-17 | 朱建良 | A kind of preparation method of mill ball |
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| CN112794733A (en) * | 2021-02-09 | 2021-05-14 | 洛阳润宝研磨材料有限公司 | Preparation method of zirconium film grinding material |
| CN112794733B (en) * | 2021-02-09 | 2023-03-03 | 洛阳润宝研磨材料有限公司 | Preparation method of zirconium film grinding material |
| CN113563803A (en) * | 2021-08-31 | 2021-10-29 | 昆山捷纳电子材料有限公司 | Polishing solution containing alumina-boron carbide hybrid particles and preparation method thereof |
| CN116217270A (en) * | 2022-12-26 | 2023-06-06 | 何思义 | Production process of diamond film coated dielectric ball with surface of zirconia ball |
| CN116217270B (en) * | 2022-12-26 | 2024-04-09 | 何思义 | Production process of diamond film coated dielectric ball with surface of zirconia ball |
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Application publication date: 20140122 |