CN110304645A - A kind of preparation method of modified aluminas - Google Patents
A kind of preparation method of modified aluminas Download PDFInfo
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- CN110304645A CN110304645A CN201910456479.2A CN201910456479A CN110304645A CN 110304645 A CN110304645 A CN 110304645A CN 201910456479 A CN201910456479 A CN 201910456479A CN 110304645 A CN110304645 A CN 110304645A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
- C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/04—Aqueous dispersions
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Abstract
A kind of preparation method of modified aluminas disclosed by the invention, is related to polishing material preparation technical field；Its preparation process is as follows: (1), preparing suspension；(2), acid solution is prepared；(3), mix；(4), dry to use；(5), calcine；(6), crush.Have the characteristics that technics comparing is simple, its product has good mechanochemistry performance, can be not only used for the polishing of optics smalt, it can also be used to sapphire wafer polishing.
Description
Technical field
The present invention relates to polishing material preparation technical field, especially a kind of modified aluminas for optical glass polishing
Preparation method.
Background technique
Aluminium oxide is to be currently known one of substance most hard in nature, with higher hardness and excellent mechanical-physical
Performance becomes important one of polish abrasive, is used metal, ceramics, resin, lacquer painting, smalt chip etc. extensively at present
The polishing in field.With the development of science and technology the type of optical glass is more and more and optical glass surface quality requirement is more next
Higher, common polishing powder from rare earth is no longer satisfied the process requirements of existing optical glass in the market；This just needs a kind of new
Polishing product meet the needs of market.Modified aluminas has the hardness higher than polishing powder from rare earth, and has good particle
Structure can be used for the polishing of optical glass.But easily there is the problems such as precipitating and scratching in the aluminium oxide of traditional handicraft preparation,
Yield rate during causing material to be reprocessed is very low.
It is a kind of α oxygen disclosed in Chinese patent (number of patent application 95196249.3) " modified sol-gel alumina "
Change aluminium abrasive material, it has at least one yttrium oxide and rare-earth oxide, and one or more is selected from magnesium and/or transition
The grain boundary that the oxide of element is modified, if at least there is yttrium oxide and/or rare-earth oxide in abrasive material
The performance of abrasive material has then can be improved at least equal to its concentration on surface in modifying agent, concentration.
Another Chinese patent (number of patent application 201310440714.X) is disclosed, and " preparation of modified superfine aluminium oxide is high resistance to
Mill property polish abrasive ", in order to improve the binding performance of polish abrasive abrasive grain and bonding agent, improves the wearability of polish abrasive, leads to
The means of chemical coating modification are crossed, the water soluble polymer segment on abrasive grain (i.e. ultra-fine alumina) surface grafting is prepared
Organically-modified compound particle.Polyacrylic acid (PAA) and Na are taken first2CO3Solution mixing, carboxymethyl cellulose and NaOH solution
Mixing, by mixed liquor with ultra-fine alumina and CaCO3It pours into reactor together, 10-50min is stirred at room temperature, then in 40-100
DEG C when stir 20-80min, and at this temperature be added dropwise sulfuric acid neutralized, until Polymer adsorption is in particle surface, by body
It is that temperature is down between 30-60 DEG C, compound particle can be made after filtering, pickling, washing, drying.Then with modified
Compound particle is uniformly mixed with polishing powder from rare earth, unsaturated polyester resin, curing agent, catalyst, is solidified into 50-100 DEG C
Type can prepare the consolidation polish abrasive of high-wearing feature.
There are also " surface applied to superhard surfaces changes disclosed in Chinese patent (number of patent application 201310484599.6)
The preparation method of property alumina polishing solution ", the preparation method prepare required particular modification agent first, then with prepared specific
Modifying agent carries out coating modification to oxidation aluminium surface, and dispersing agent is then added；Polishing combination liquid is put into QM series horizontal liquid spheres
In grinding machine, ball milling reasonable time；Be subsequently added into suitable oxidant, preservative stirs evenly, then with pH adjusting agent will polish
The pH of liquid is transferred to 3-12.The additive amount of the particular surface modifying agent of the preparation is related to aluminium oxide surface area；The dispersing agent
For a kind of water soluble polymer.
There are also disclosed " the solvent type modified aluminum oxide throwings of Chinese patent (number of patent application 201510223481.7)
The preparation method of light liquid ", the preparation method carry out grain size grading to alumina particle first, add dispersing agent to aluminium oxide table
Face carries out coating modification, is subsequently added into organic solvent and oxidant stirs evenly, then keep its fully dispersed through ultrasonic vibration, rear to use
The pH of polishing fluid is transferred to 2.5-12.5 by pH adjusting agent, and the polishing fluid of invention preparation has good suspended dispersed, can be answered
For under water-less environment, aluminium alloy, copper, stainless steel and Sapphire Substrate polishing have polishing efficiency high, and surface roughness is small,
The advantages that small to substrate surface damage.
There are also " a kind of tables of alumina abrasive powder disclosed in Chinese patent (number of patent application 201610181250.9)
Surface modification process ", comprising: (1) alumina abrasive powder reacts 0.5-5 hours with silane coupling agent；(2) again to step (1)
Reaction system be added the functional group containing acryloyl group monomer and initiator, 50-120 DEG C reaction 0.5-10 hours.With it is existing
Method is compared, and the inventive method is easy to operate, more efficient, and modified result is controllable, can be according to actual needs to alumina abrasive
The clad ratio of powder is regulated and controled, thus obtain in aqueous suspension agent or polishing agent preferable compatibility and dispersion stabilization with
And ideal grinding or polishing effect.
Summary of the invention
The aluminium oxide simple and with good mechanochemistry performance the purpose of the present invention is to provide a kind of technics comparing
Preparation method.
To realize the above-mentioned technical purpose, the technical solution adopted by the present invention is that inventing a kind of preparation side of modified aluminas
Method, which is characterized in that preparation process is as follows:
(1), prepare suspension: aluminium hydroxide being added in the deionized water in stirring, aluminium hydroxide mass fraction is formed
It is spare for the suspension of 25-40%；
(2), prepare acid solution: acid (that is: raw material acid) is slowly added into the deionized water of stirring, form acids quality point
Number is the acid solution of 0.1-10%, spare；The mass fraction of raw material acid is 30-80%；
(3), mix: according to the weight ratio of 1:13, acid solution being slowly added into the suspension of stirring, form mixed liquor, it is standby
With；
(4), dry: mixed liquor is dried at 100 DEG C -200 DEG C, obtains powder, it is spare；
(5), calcine: powder is put into Muffle furnace, according to heating curve, calcining is that α is aoxidized at 950 DEG C -1300 DEG C
Aluminium, it is spare；
(6), crush: alpha-aluminium oxide is ground into partial size D50 in 0.2-2.6 μm of fine powder to get modified aluminas.
The aluminium hydroxide includes but are not limited to Al (OH)3、γ-AlOOH、γ-AlOOH·nH2O、AlOOH、γ-
Al2O3Aluminium hydroxide and its variant.
The acid is one or more of nitric acid, phosphoric acid, hydrochloric acid, sulfuric acid, and when for two kinds or more, each component is matched
Than for etc. parts by weight.
The step (1) stirring, mixing speed 10-1500rpm, mixing time 20-60min；
The step (2) stirring, mixing speed 10-1500rpm, mixing time 2-8min；
The step (3) stirring, mixing speed 10-1500rpm, mixing time 20-60min.
Further,
Step (1) the stirring speed be 1300rpm, mixing time 40min；
Step (2) the stirring speed be 1300rpm, mixing time 5min；
Step (3) the stirring speed be 1300rpm, mixing time 40min.
The drying of the mixed liquor is 180-330 DEG C using spray drying or other modes drying, drying temperature.
The drying temperature is 150 DEG C.
The calcination temperature is 1000 DEG C -1200 DEG C.
Further, the calcination temperature is 1100-1150 DEG C.
The breaking method uses the cooperation of one or more of wet grinding, dry pulverization process and high-energy ball milling,
Target grain size D50 is crushed at 0.8 μm.
Above-mentioned parts by weight unit used, can be gram kilogram or ton, be also possible to other unit of weights.
The preparation method of modified aluminas of the invention, production process only have: prepare suspension, prepare acid solution, mixing,
It dries, calcine, crushing several steps, thus its technics comparing is simple；Meanwhile it is resulting after forfeiting calcining by high temperature and crush
Modified aluminas, configuration of surface are optimized, and have good mechanochemistry performance, and prepared polishing fluid is less prone to
The problems such as precipitating and scuffing.In addition, using polishing fluid prepared by modified aluminas of the invention, being used for optics by test
Smalt polishing, removal rate can reach 1.88-2.54 μm/min, and average removal rate is 2.19 μm/min, surface without
It scratches.
Specific embodiment
With reference to embodiments, the present invention is further illustrated.Following explanation be by the way of enumerating, but this
The protection scope of invention should not be limited to thoses mentioned above.
Embodiment 1:
The preparation method of the modified aluminas of the present embodiment, preparation process are as follows:
(1), stock up: weighing 500 grams of aluminium hydroxide, 900 grams of deionized water, the nitric acid 1.5 that mass fraction is 68% respectively
Gram, it is spare；
(2), prepare suspension: 500 grams of aluminium hydroxides being added in 800 grams of deionized waters in stirring, mechanical stirring point
40min, mixing speed 150rpm are dissipated, the suspension that aluminium hydroxide mass fraction is 38% is formed, it is spare；
(3), prepare acid solution: the nitric acid that 1.5 gram mass scores are 68% is slowly added into 100 grams of deionized waters of stirring
In, mechanical stirring disperses 5min, mixing speed 1300rpm, forms the nitric acid liquid that mass fraction is 2.17%, spare；
(4), mix: nitric acid liquid is slowly added into the suspension of stirring, mechanical stirring disperses 40min, and mixing speed is
1300rpm forms mixed liquor, spare；
(5), dry: mixed liquor to be poured into stainless steel drying tray, oven temperature is set as 150 DEG C, and drying obtains powder, standby
With；
(6), calcine: powder is poured into crucible, be put into Muffle furnace, temperature curve maximum temperature is set to 1000 DEG C, is calcined
2 hours, become alpha-aluminium oxide, it is spare；
(7), crush: by alpha-aluminium oxide according to water: after material compares the weight ratio mixing for 2:1, through wet ball grinding at D50=
0.8 μm of slurry is to get modified oxidized aluminum slurry；It is again that modified oxidized aluminum slurry is spray-dried, powder is dried at 220 DEG C
Body is to get modified aluminas.
Embodiment 2:
The preparation method of the modified aluminas of the present embodiment, preparation process are as follows:
(1), stock up: weighing 500 grams of aluminium hydroxide, 900 grams of deionized water, 3 grams of nitric acid that mass fraction is 68% respectively,
It is spare；
(2), prepare suspension: 500 grams of aluminium hydroxides being added in 800 grams of deionized waters in stirring, mechanical stirring point
40min, mixing speed 150rpm are dissipated, the suspension that aluminium hydroxide mass fraction is 38% is formed, it is spare；
(3), prepare acid solution: the nitric acid that 3 gram mass scores are 68% be slowly added into 100 grams of deionized waters of stirring,
Mechanical stirring disperses 5min, mixing speed 1300rpm, forms the nitric acid liquid that mass fraction is 4.34%, spare；
(4), mix: nitric acid liquid is slowly added into the suspension of stirring, mechanical stirring disperses 40min, and mixing speed is
1300rpm forms mixed liquor, spare；
(5), dry: mixed liquor to be poured into stainless steel drying tray, oven temperature is set as 150 DEG C, and drying obtains powder, standby
With；
(6), calcine: powder is poured into crucible, be put into Muffle furnace, temperature curve maximum temperature is set to 1000 DEG C, is calcined
2 hours, become alpha-aluminium oxide, it is spare；
(7), crush: by alpha-aluminium oxide according to water: after material compares the weight ratio mixing for 2:1, through wet ball grinding at D50=
0.8 μm of slurry is to get modified oxidized aluminum slurry；It is again that modified oxidized aluminum slurry is spray-dried, powder is dried at 220 DEG C
Body is to get modified aluminas.
Embodiment 3:
The preparation method of the modified aluminas of the present embodiment, preparation process are as follows:
(1), stock up: weighing 500 grams of aluminium hydroxide, 900 grams of deionized water, the hydrochloric acid 6.5 that mass fraction is 35% respectively
Gram, it is spare；
(2), prepare suspension: 500 grams of aluminium hydroxides being added in 800 grams of deionized waters in stirring, mechanical stirring point
40min, mixing speed 150rpm are dissipated, the suspension that aluminium hydroxide mass fraction is 38% is formed, it is spare；
(3), prepare acid solution: the hydrochloric acid that 6.5 gram mass scores are 35% is slowly added into 100 grams of deionized waters of stirring
In, mechanical stirring disperses 5min, mixing speed 1300rpm, forms the hydrochloric acid solution that mass fraction is 2.13%, spare；
(4), mix: hydrochloric acid solution is slowly added into the suspension of stirring, mechanical stirring disperses 40min, and mixing speed is
1300rpm forms mixed liquor, spare；
(5), dry: mixed liquor to be poured into stainless steel drying tray, oven temperature is set as 150 DEG C, and drying obtains powder, standby
With；
(6), calcine: powder is poured into crucible, be put into Muffle furnace, temperature curve maximum temperature is set to 1000 DEG C, is calcined
2 hours, become alpha-aluminium oxide, it is spare；
(7), crush: by alpha-aluminium oxide according to water: after material compares the weight ratio mixing for 2:1, through wet ball grinding at D50=
0.8 μm of slurry is to get modified oxidized aluminum slurry；It is again that modified oxidized aluminum slurry is spray-dried, powder is dried at 220 DEG C
Body is to get modified aluminas.
Embodiment 4:
The preparation method of the modified aluminas of the present embodiment, preparation process are as follows:
(1), stock up: weighing 500 grams of aluminium hydroxide, 900 grams of deionized water, the sulfuric acid 0.22 that mass fraction is 98% respectively
Gram, it is spare；
(2), prepare suspension: 500 grams of aluminium hydroxides being added in 800 grams of deionized waters in stirring, mechanical stirring point
40min, mixing speed 150rpm are dissipated, the suspension that aluminium hydroxide mass fraction is 38% is formed, it is spare；
(3), prepare acid solution: the sulfuric acid that 0.22 gram mass score is 80% is slowly added into 100 grams of deionized waters of stirring
In, mechanical stirring disperses 5min, mixing speed 1300rpm, forms the sulfuric acid liquid that mass fraction is 0.215%, spare；
(4), mix: sulfuric acid liquid is slowly added into the suspension of stirring, mechanical stirring disperses 40min, and mixing speed is
1300rpm forms mixed liquor, spare；
(5), dry: mixed liquor to be poured into stainless steel drying tray, oven temperature is set as 150 DEG C, and drying obtains powder, standby
With；
(6), calcine: powder is poured into crucible, be put into Muffle furnace, temperature curve maximum temperature is set to 1000 DEG C, is calcined
2 hours, become alpha-aluminium oxide, it is spare；
(7), crush: by alpha-aluminium oxide according to water: after material compares the weight ratio mixing for 2:1, through wet ball grinding at D50=
0.8 μm of slurry is to get modified oxidized aluminum slurry；It is again that modified oxidized aluminum slurry is spray-dried, powder is dried at 220 DEG C
Body is to get modified aluminas.
Embodiment 5:
The preparation method of the modified aluminas of the present embodiment, preparation process are as follows:
(1), stock up: weighing 500 grams of aluminium hydroxide, 900 grams of deionized water, the phosphoric acid 0.25 that mass fraction is 85% respectively
Gram, it is spare；
(2), prepare suspension: 500 grams of aluminium hydroxides being added in 800 grams of deionized waters in stirring, mechanical stirring point
40min, mixing speed 150rpm are dissipated, the suspension that aluminium hydroxide mass fraction is 38% is formed, it is spare；
(3), prepare acid solution: the phosphoric acid that 0.25 gram mass score is 85% is slowly added into 100 grams of deionized waters of stirring
In, mechanical stirring disperses 5min, mixing speed 1300rpm, forms the phosphoric acid liquid that mass fraction is 0.212%, spare；
(4), mix: phosphoric acid liquid is slowly added into the suspension of stirring, mechanical stirring disperses 40min, and mixing speed is
1300rpm forms mixed liquor, spare；
(5), dry: mixed liquor to be poured into stainless steel drying tray, oven temperature is set as 150 DEG C, and drying obtains powder, standby
With；
(6), calcine: powder is poured into crucible, be put into Muffle furnace, temperature curve maximum temperature is set to 1100 DEG C, is calcined
2 hours, become alpha-aluminium oxide, it is spare；
(7), crush: by alpha-aluminium oxide according to water: after material compares the weight ratio mixing for 2:1, through wet ball grinding at D50=
0.8 μm of slurry is to get modified oxidized aluminum slurry；It is again that modified oxidized aluminum slurry is spray-dried, powder is dried at 220 DEG C
Body is to get modified aluminas.
Embodiment 6:
The preparation method of the modified aluminas of the present embodiment, preparation process are as follows:
(1), stock up: weighing 500 grams of aluminium hydroxide, 900 grams of deionized water, the nitric acid 1.5 that mass fraction is 68% respectively
Gram, it is spare；
(2), prepare suspension: 500 grams of aluminium hydroxides being added in 800 grams of deionized waters in stirring, mechanical stirring point
40min, mixing speed 150rpm are dissipated, the suspension that aluminium hydroxide mass fraction is 38% is formed, it is spare；
(3), prepare acid solution: the nitric acid that 1.5 gram mass scores are 68% is slowly added into 100 grams of deionizations in stirring
In water, mechanical stirring disperses 5min, mixing speed 1300rpm, forms the nitric acid liquid that mass fraction is 0.217%, spare；
(4), mix: nitric acid liquid is slowly added into the suspension of stirring, mechanical stirring disperses 40min, and mixing speed is
1300rpm forms mixed liquor, spare；
(5), dry: mixed liquor to be poured into stainless steel drying tray, oven temperature is set as 150 DEG C, and drying obtains powder, standby
With；
(6), calcine: powder is poured into crucible, be put into Muffle furnace, temperature curve maximum temperature is set to 1150 DEG C, is calcined
2 hours, become alpha-aluminium oxide, it is spare；
(7), crush: by alpha-aluminium oxide according to water: after material compares the weight ratio mixing for 2:1, through wet ball grinding at D50=
0.8 μm of slurry is to get modified oxidized aluminum slurry；It is again that modified oxidized aluminum slurry is spray-dried, powder is dried at 220 DEG C
Body is to get modified aluminas.
By modified aluminas powder prepared in the above embodiments after the dilution of the weight ratio of 1:19, it is configured to modified oxidized
Aluminium powder polishing fluid, applied to the removal rate data and surface quality experiment of the polishing of optics smalt, the grinding of experimentation
Process conditions are as follows:
Grinder: Presi1200；
The chip being ground: Xiao Te smalt；
Grinding pressure: 1kg；
Milling time: 10min；
After grinding, smalt is cleaned by ultrasonic, dried, measures thickness.Optics smalt is measured by calibrator
Thickness difference seeks removal digit rate；With visually detecting surface quality under major light.
Following table is that the modified aluminas polishing fluid of each embodiment polishes removal rate and surface scratching after optics smalt
The testing result of situation.
As can be seen from the above table, after the modified aluminium oxide polishing of optics smalt, removal rate reaches 1.88-2.54 μ
M/min, average removal rate is 2.19 μm/min, and surface fully meets blue glass rough polishing technique requirement without scuffing, and saves significantly
Processing cost is saved.
The present invention is described in detail in specific embodiments of the present invention, is related to being suitable for the polishing of optics smalt
Modified aluminas, however it is obvious to a person skilled in the art that can be without departing from the case in the spirit of the invention
It is made various changes and modifications, the technical solution of all such change and modification be considered as each falling within the scope of the present invention it
It is interior.
Modified oxidized aluminium powder prepared by preparation method using modified oxidized aluminium powder of the invention can be not only used for optics indigo plant
Glass polishing, it can also be used to sapphire wafer polishing.
Claims (10)
1. a kind of preparation method of modified aluminas, which is characterized in that preparation process is as follows:
(1), prepare suspension: aluminium hydroxide being added in the deionized water in stirring, forming aluminium hydroxide mass fraction is
The suspension of 25-40%, it is spare；
(2), prepare acid solution: slow acid is added in the deionized water of stirring, form the acid that acids mass fraction is 0.1-10%
Liquid, it is spare；
(3), mix: according to the weight ratio of 1:13, acid solution being slowly added into the suspension of stirring, form mixed liquor, it is spare；
(4), dry: mixed liquor is dried at 100 DEG C -330 DEG C, obtains powder, it is spare；
(5), calcine: powder is put into Muffle furnace, according to heating curve, calcining is alpha-aluminium oxide at 950 DEG C -1300 DEG C, standby
With；
(6), crush: alpha-aluminium oxide is ground into partial size D50 in 0.2-2.6 μm of fine powder to get modified aluminas.
2. the preparation method of modified aluminas according to claim 1, it is characterised in that: the aluminium hydroxide includes but not
It is only limitted to Al (OH)3、γ-AlOOH、γ-AlOOH·nH2O、AlOOH、γ-Al2O3Aluminium hydroxide and its variant.
3. the preparation method of modified aluminas according to claim 1, it is characterised in that: the acid is nitric acid, phosphoric acid, salt
Acid, one or more of sulfuric acid the parts by weight such as the ratio of each component is when for two kinds or more.
4. the preparation method of modified aluminas according to claim 1, it is characterised in that:
The step (1) stirring, mixing speed 10-1500rpm, mixing time 20-60min；
The step (2) stirring, mixing speed 10-1500rpm, mixing time 2-8min；
The step (3) stirring, mixing speed 10-1500rpm, mixing time 20-60min.
5. the preparation method of modified aluminas according to claim 4, it is characterised in that:
Step (1) the stirring speed be 1300rpm, mixing time 40min；
Step (2) the stirring speed be 1300rpm, mixing time 5min；
Step (3) the stirring speed be 1300rpm, mixing time 40min.
6. the preparation method of modified aluminas according to claim 1, it is characterised in that: the drying of the mixed liquor is using spray
Mist is dry or other modes drying, drying temperature are 100-200 DEG C.
7. the preparation method of modified aluminas according to claim 6, it is characterised in that: the drying temperature is 150 DEG C.
8. the preparation method of modified aluminas according to claim 1, it is characterised in that: the calcination temperature is 1000
℃-1200℃。
9. the preparation method of modified aluminas according to claim 1, it is characterised in that: the calcination temperature is 1100-
1150℃。
10. the preparation method of modified aluminas according to claim 1, it is characterised in that: the breaking method is using wet
The cooperation of one or more of method grinding, dry pulverization process and high-energy ball milling, is crushed to target grain size D50 at 0.8 μm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980334A (en) * | 2021-03-03 | 2021-06-18 | 杭州智华杰科技有限公司 | Method for improving suspension property of aluminum oxide polishing powder |
| CN114163931A (en) * | 2021-12-09 | 2022-03-11 | 深圳市拍档科技有限公司 | Aluminum alloy liquid fine polishing wax and preparation method thereof |
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|---|---|---|---|---|
| US5284809A (en) * | 1991-11-22 | 1994-02-08 | Lonza Ltd. | Method for the preparation of α-aluminum oxide powder |
| CN106698489A (en) * | 2017-01-04 | 2017-05-24 | 杭州智华杰科技有限公司 | Preparation method of high-cutting and high-brightness alumina polishing powder |
| CN108975366A (en) * | 2018-09-19 | 2018-12-11 | 孝义市泰兴铝镁有限公司 | A kind of macropore boehmite and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284809A (en) * | 1991-11-22 | 1994-02-08 | Lonza Ltd. | Method for the preparation of α-aluminum oxide powder |
| CN106698489A (en) * | 2017-01-04 | 2017-05-24 | 杭州智华杰科技有限公司 | Preparation method of high-cutting and high-brightness alumina polishing powder |
| CN108975366A (en) * | 2018-09-19 | 2018-12-11 | 孝义市泰兴铝镁有限公司 | A kind of macropore boehmite and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980334A (en) * | 2021-03-03 | 2021-06-18 | 杭州智华杰科技有限公司 | Method for improving suspension property of aluminum oxide polishing powder |
| CN114163931A (en) * | 2021-12-09 | 2022-03-11 | 深圳市拍档科技有限公司 | Aluminum alloy liquid fine polishing wax and preparation method thereof |
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Application publication date: 20191008 |