CN108101522A - A kind of aluminium oxide ceramics - Google Patents
A kind of aluminium oxide ceramics Download PDFInfo
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- CN108101522A CN108101522A CN201711459876.2A CN201711459876A CN108101522A CN 108101522 A CN108101522 A CN 108101522A CN 201711459876 A CN201711459876 A CN 201711459876A CN 108101522 A CN108101522 A CN 108101522A
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Abstract
The present invention relates to ceramic field, more particularly to a kind of aluminium oxide ceramics.Aluminium oxide ceramics of the present invention includes the component of following parts by weight：Alumina powder：80 100 parts, binding agent：8 15 parts, LaNbO4：2 10 parts, starch：2 10 parts, sintering aid：5 15 parts, crystal inhibiting agent：3 10 parts, plasticiser：3 15 parts, dispersant：3 15 parts.The present invention adds in LaNbO in aluminium oxide ceramics4, starch, the alumina ceramic material that can be improved resistance crack propagation ability fracture toughness；Meanwhile the present invention, by dry-pressing combination isostatic cool pressing, the aluminium oxide ceramics blank intensity and density enabled to improves.
Description
Invention field
The present invention relates to ceramic field, more particularly to a kind of aluminium oxide ceramics.
Background technology
The aluminium oxide ceramics stick for being presently used for precision resistance is generally prepared by 96% aluminium oxide, however its bending resistance
Degree only has 300MPa or so, the aluminium oxide ceramics stick of the intensity easy forced breakage during assembling process and use, directly
Influence the service life of resistance.
The content of the invention
The present invention is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of porosity is low, aluminium oxide pottery with high hardness
Porcelain.
The purpose of the present invention is realized by following technical solution：A kind of aluminium oxide ceramics, the aluminium oxide ceramics include
The component of following parts by weight：Alumina powder：80-100 parts, binding agent：8-15 parts, LaNbO4：2-10 parts, starch：2-10 parts,
Sintering aid：5-15 parts, crystal inhibiting agent：3-10 parts, plasticiser：3-15 parts, dispersant：3-15 parts.
In a kind of above-mentioned aluminium oxide ceramics, the aluminium oxide ceramics includes the component of following parts by weight：Alumina powder：
85-95 parts, binding agent：10-13 parts, LaNbO4：3-8 parts, starch：4-9 parts, sintering aid：8-13 parts, crystal inhibiting agent：4-9
Part, plasticiser：5-10 parts, dispersant：5-10 parts.
The present invention in aluminium oxide ceramics by adding in LaNbO4, with matrix stabilization can be kept to coexist, and to oxidation
The sintering character of aluminium ceramics has certain facilitation, and significant toughening effect is generated to alumina substrate；Starch is added, it can
It realizes the near net-shape consolidation in-situ forming of aluminium oxide ceramics, and the ceramic sintered bodies of high-compactness can be obtained.
In a kind of above-mentioned aluminium oxide ceramics, the binding agent is polyvinyl alcohol, one kind in carboxymethyl cellulose or two
Kind.
In a kind of above-mentioned aluminium oxide ceramics, the sintering aid is calcium silicate powder, and the purity of the calcium silicate powder is 99-
100%.Calcium silicates has following advantage as sintering aid：Calcium silicates purity is high, and impurity content is low, the oxidation that can ensure that
The purity of aluminium ceramics；In high-temperature sintering process calcium silicate powder meeting decomposition in situ into silica and calcium oxide, both substances can
In molten condition, can liquid phase more effectively be generated with alumina particle under its interaction, promote alumina particle again
Permutation and combination, while the silica of molten and calcium oxide understand the migration of accelerated oxidation alumina particles and fill up void among particles,
Ensure product tight, high fine and close, but calcium silicates addition can excessively cause to remain it is high influence Article Stiffness Determination and intensity, excessively it is few then without
Method generates enough liquid phases and promotes densified sintering product, therefore the present invention is using the calcium silicates of above-mentioned parts by weight.
In a kind of above-mentioned aluminium oxide ceramics, the crystal inhibiting agent is light magnesium oxide.The present invention selects lightweight oxidation
For magnesium as crystal inhibiting agent, because of the large specific surface area of light magnesium oxide, equivalent weight, area is wider, advantageously reduces oxidation
The addition of magnesium, improves the aluminium oxide purity of aluminium oxide ceramics, and light magnesium oxide addition can excessively make alumina particle in high temperature
Inhibited in the process by magnesia and can not be grown up, influence product densified sintering product；The excessively few then alumina particle of addition is in high temperature
It is too grown up by the effect of sintering aid in the process, reduces the intensity of product, therefore the present invention is using the lightweight oxygen of above-mentioned number
Change magnesium.
In a kind of above-mentioned aluminium oxide ceramics, by adding in LaNbO4, work as LaNbO4Iron bullet is mutually distributed as second-phase dispersion
It is had the following effects that when being added to aluminium oxide ceramics：Under external force, the crackle of material internal and defect nearby generate stress
Concentration phenomenon, when the stress of concentration reaches LaNbO4During coercive stress, LaNbO4Generation farmland handoff response is absorbed in handoff procedure
Energy declines the elastic strain ability of material, reduces the stress field intensity of crack tip, and material is made to resist crack propagation
Ability fracture toughness improves.
In a kind of above-mentioned aluminium oxide ceramics, the starch is by the starch of pretreatment, and the pretreatment specifically includes
Following steps：Starch is put into reactor and is placed in water bath with thermostatic control, is passed through ozone generator, mechanical agitation and oxidation processes 1-
2h is stood.The present invention carries out oxidation processes using ozone to starch, the starch glucoside key fracture enabled to, and introduces aldehyde radical
And carboxyl, starch molecule functional group is made to change.Oxidized starch is applied in aluminium oxide ceramics of the present invention, in certain solid phase
Under volume fraction, due to the attraction that particle is asked, loose and flexible net structure is formd between particle in system, system exists
Intergranular structure must be first broken to a certain extent before flow deformation, make particle that relative motion occur, therefore system exists
Yield value.When system flows under the stress more than yield value, intergranular attraction still remains, structure break and
It can occur simultaneously when being reconstituted in flowing.Since the speed of structural remodeling in slurry is accelerated with the increase for the degree of breaking, system
The equal balance and stability state of speed can be reached in flowing.Therefore there are one nearly quasi-stationary plastic viscosities for system tool.When adding
When the amount of starch entered is small, the flow pattern of slurry is influenced little.And when content of starch increases, the oriented casson Regime transitions of slurry
Trend, i.e. apparent viscosity of slurry reduces with the increase of shear rate, in apparent shear-thinning property.
In a kind of above-mentioned aluminium oxide ceramics, the plasticiser is one or both of glycerine, esters of silicon acis coupling agent.
It is another object of the present invention to provide a kind of preparation method of above-mentioned aluminium oxide ceramics, the preparation method tool
Body includes the following steps：
Pre- ball milling：Weigh alumina powder, LaNbO4, starch, dispersant, sintering aid and crystal inhibiting agent, and add in and go
Ionized water, high speed ball milling obtain slurry；
Ball milling：Ball milling obtains secondary slurry again for addition binding agent and plasticiser in the slurry；
Mist projection granulating：Antifoaming agent is added in secondary slurry and carries out being granulated to obtain pellet in Centrafugal spray drying tower；
Compression moulding：Pellet is pressed to obtain by aluminium oxide ceramics prefabricated component using dry-pressing formed machine；
Isostatic cool pressing：By aluminium oxide ceramics prefabricated component through obtaining aluminium oxide ceramics blank at isostatic cool pressing；
It is pre-sintered：In tunnel kiln by aluminium oxide ceramics blank it is pre-sintered aluminium oxide ceramics semi-finished product；
Hot isostatic pressing：Aluminium oxide ceramics semi-finished product progress hot isostatic pressing is obtained into aluminium oxide ceramics finished product.
In a kind of above-mentioned preparation method of aluminium oxide ceramics, the mechanical milling process carries out in high-speed wet type ball mill,
Ball milling speed is 120-150r/min, Ball-milling Time 2-3h.Present invention slurries Ang Hua trips ceramics in high-speed wet type ball mill
Ball milling, the ball milling powder epigranular enabled to are carried out, and is easy to be granulated.
In a kind of above-mentioned preparation method of aluminium oxide ceramics, a diameter of 0.10-0.15mm of the pellet, moisture content is
0.3-0.4%.By the diameter of granulation and moisture control in above range, the granulation enabled to is easy to be pressed into the present invention
Type, and uniformly, hardness is high.
In a kind of above-mentioned preparation method of aluminium oxide ceramics, the pressure of the compression moulding process is 150-170MPa.
In a kind of above-mentioned preparation method of aluminium oxide ceramics, the pressure of the isostatic cool pressing is 200-210MPa, the time
For 1-2h.By dry-pressing combination isostatic cool pressing, the aluminium oxide ceramics blank intensity and density enabled to improves the present invention.
In a kind of above-mentioned preparation method of aluminium oxide ceramics, the temperature of the pre-sintering process is 1610-1670 DEG C, is burnt
The knot time is 5-6h.For the present invention using pre-sintered method, the aluminium oxide ceramics enabled to has high rigidity, and the porosity
It is low.
In a kind of above-mentioned preparation method of aluminium oxide ceramics, the pressure of the hot isostatic pressing is 190-200MPa, the time
For 1-2h.Hip treatment can allow the even density of green compact consistent, in compression molding, either unidirectionally or Bidirectional pressure
System, green density can all occurs and be unevenly distributed phenomenon.The variation of this density often can reach when suppressing complicated shape product
More than 10%.This is because caused by frictional resistance between powder and punching block.Isostatic pressed fluid media (medium) transfers pressure, in each side
It is equal upwards.Jacket is compressed unanimous on the whole with powder, and powder is with jacket without relative motion, and the frictional resistance between them is very
Few, pressure only slightly declines, this density downward gradient generally only less than 1%, thus, it is believed that blank density is equal
Even.
Compared with prior art, the invention has the advantages that：
1st, the present invention adds in LaNbO in aluminium oxide ceramics4, starch, the alumina ceramic material that can be improved
Resist the ability fracture toughness of crack propagation；
2nd, by dry-pressing combination isostatic cool pressing, the aluminium oxide ceramics blank intensity and density enabled to carries the present invention
It is high；
3rd, the present invention is using the rational alumina ceramic material of component, and combines rational preparation method, enables to
The aluminium oxide ceramics porosity is low, hardness is high.
Specific embodiment
It is specific embodiments of the present invention below, technical scheme is further described, but the present invention is simultaneously
It is not limited to these embodiments.
Table 1：The component and number of embodiment 1-5 aluminium oxide ceramics
Embodiment 1
Pre- ball milling：Alumina powder, LaNbO are weighed according to 1 embodiment 1 of table4, starch, dispersant, sintering aid and crystal suppression
Preparation, and deionized water is added in, high speed ball milling obtains slurry；
Ball milling：Ball milling obtains secondary slurry again for addition binding agent and plasticiser in the slurry；The mechanical milling process is at a high speed
It is carried out in wet ball mill, ball milling speed 120r/min, Ball-milling Time 2h；
Mist projection granulating：Antifoaming agent is added in secondary slurry and carries out being granulated to obtain pellet in Centrafugal spray drying tower；
A diameter of 0.10mm of the pellet, moisture content 0.3%；
Compression moulding：Pellet is pressed to obtain by aluminium oxide ceramics prefabricated component using dry-pressing formed machine；The compacting
The pressure of forming process is 150MPa；
Isostatic cool pressing：By aluminium oxide ceramics prefabricated component through obtaining aluminium oxide ceramics blank at isostatic cool pressing；The isostatic cool pressing
Pressure be 200MPa, time 1h；
It is pre-sintered：In tunnel kiln by aluminium oxide ceramics blank it is pre-sintered aluminium oxide ceramics semi-finished product；The pre-burning
The temperature of knot process is 1610 DEG C, sintering time 5h；
Hot isostatic pressing：Aluminium oxide ceramics semi-finished product progress hot isostatic pressing is obtained into aluminium oxide ceramics finished product；The heat etc. is quiet
The pressure of pressure is 190MPa, time 1h.
Embodiment 2
Pre- ball milling：Alumina powder, LaNbO are weighed according to 1 embodiment 2 of table4, starch, dispersant, sintering aid and crystal suppression
Preparation, and deionized water is added in, high speed ball milling obtains slurry；
Ball milling：Ball milling obtains secondary slurry again for addition binding agent and plasticiser in the slurry；The mechanical milling process is at a high speed
It is carried out in wet ball mill, ball milling speed 130r/min, Ball-milling Time 2.2h；
Mist projection granulating：Antifoaming agent is added in secondary slurry and carries out being granulated to obtain pellet in Centrafugal spray drying tower；
A diameter of 0.11mm of the pellet, moisture content 0.32%；
Compression moulding：Pellet is pressed to obtain by aluminium oxide ceramics prefabricated component using dry-pressing formed machine；The compacting
The pressure of forming process is 155MPa；
Isostatic cool pressing：By aluminium oxide ceramics prefabricated component through obtaining aluminium oxide ceramics blank at isostatic cool pressing；The isostatic cool pressing
Pressure be 202MPa, time 1.2h；
It is pre-sintered：In tunnel kiln by aluminium oxide ceramics blank it is pre-sintered aluminium oxide ceramics semi-finished product；The pre-burning
The temperature of knot process is 1620 DEG C, sintering time 5.2h；
Hot isostatic pressing：Aluminium oxide ceramics semi-finished product progress hot isostatic pressing is obtained into aluminium oxide ceramics finished product；The heat etc. is quiet
The pressure of pressure is 1920MPa, time 1.2h.
Embodiment 3
Pre- ball milling：Alumina powder, LaNbO are weighed according to 1 embodiment 3 of table4, starch, dispersant, sintering aid and crystal suppression
Preparation, and deionized water is added in, high speed ball milling obtains slurry；
Ball milling：Ball milling obtains secondary slurry again for addition binding agent and plasticiser in the slurry；The mechanical milling process is at a high speed
It is carried out in wet ball mill, ball milling speed 135r/min, Ball-milling Time 2.5h；
Mist projection granulating：Antifoaming agent is added in secondary slurry and carries out being granulated to obtain pellet in Centrafugal spray drying tower；
A diameter of 0.13mm of the pellet, moisture content 0.35%；
Compression moulding：Pellet is pressed to obtain by aluminium oxide ceramics prefabricated component using dry-pressing formed machine；The compacting
The pressure of forming process is 160MPa；
Isostatic cool pressing：By aluminium oxide ceramics prefabricated component through obtaining aluminium oxide ceramics blank at isostatic cool pressing；The isostatic cool pressing
Pressure be 205MPa, time 1.5h；
It is pre-sintered：In tunnel kiln by aluminium oxide ceramics blank it is pre-sintered aluminium oxide ceramics semi-finished product；The pre-burning
The temperature of knot process is 1640 DEG C, sintering time 5.5h；
Hot isostatic pressing：Aluminium oxide ceramics semi-finished product progress hot isostatic pressing is obtained into aluminium oxide ceramics finished product；The heat etc. is quiet
The pressure of pressure is 195MPa, time 1.5h.
Embodiment 4
Pre- ball milling：Alumina powder, LaNbO are weighed according to 1 embodiment 4 of table4, starch, dispersant, sintering aid and crystal suppression
Preparation, and deionized water is added in, high speed ball milling obtains slurry；
Ball milling：Ball milling obtains secondary slurry again for addition binding agent and plasticiser in the slurry；The mechanical milling process is at a high speed
It is carried out in wet ball mill, ball milling speed 140r/min, Ball-milling Time 2.8h；
Mist projection granulating：Antifoaming agent is added in secondary slurry and carries out being granulated to obtain pellet in Centrafugal spray drying tower；
A diameter of 0.14mm of the pellet, moisture content 0.38%；
Compression moulding：Pellet is pressed to obtain by aluminium oxide ceramics prefabricated component using dry-pressing formed machine；The compacting
The pressure of forming process is 165MPa；
Isostatic cool pressing：By aluminium oxide ceramics prefabricated component through obtaining aluminium oxide ceramics blank at isostatic cool pressing；The isostatic cool pressing
Pressure be 208MPa, time 1.8h；
It is pre-sintered：In tunnel kiln by aluminium oxide ceramics blank it is pre-sintered aluminium oxide ceramics semi-finished product；The pre-burning
The temperature of knot process is 1660 DEG C, sintering time 5.8h；
Hot isostatic pressing：Aluminium oxide ceramics semi-finished product progress hot isostatic pressing is obtained into aluminium oxide ceramics finished product；The heat etc. is quiet
The pressure of pressure is 198MPa, time 1.8h.
Embodiment 5
Pre- ball milling：Alumina powder, LaNbO are weighed according to 1 embodiment 5 of table4, starch, dispersant, sintering aid and crystal suppression
Preparation, and deionized water is added in, high speed ball milling obtains slurry；
Ball milling：Ball milling obtains secondary slurry again for addition binding agent and plasticiser in the slurry；The mechanical milling process is at a high speed
It is carried out in wet ball mill, ball milling speed 150r/min, Ball-milling Time 3h；
Mist projection granulating：Antifoaming agent is added in secondary slurry and carries out being granulated to obtain pellet in Centrafugal spray drying tower；
A diameter of 0.15mm of the pellet, moisture content 0.4%；
Compression moulding：Pellet is pressed to obtain by aluminium oxide ceramics prefabricated component using dry-pressing formed machine；The compacting
The pressure of forming process is 170MPa；
Isostatic cool pressing：By aluminium oxide ceramics prefabricated component through obtaining aluminium oxide ceramics blank at isostatic cool pressing；The isostatic cool pressing
Pressure be 210MPa, time 2h；
It is pre-sintered：In tunnel kiln by aluminium oxide ceramics blank it is pre-sintered aluminium oxide ceramics semi-finished product；The pre-burning
The temperature of knot process is 1670 DEG C, sintering time 6h；
Hot isostatic pressing：Aluminium oxide ceramics semi-finished product progress hot isostatic pressing is obtained into aluminium oxide ceramics finished product；The heat etc. is quiet
The pressure of pressure is 200MPa, time 2h.
Embodiment 6
With differing only in for embodiment 3, which uses common sintering aid, other and embodiment
3 is identical, and details are not described herein again.
Embodiment 7
With differing only in for embodiment 3, the embodiment aluminium oxide ceramics starch is not by pretreatment, other and implementation
Example 3 is identical, and details are not described herein again.
Embodiment 8
With differing only in for embodiment 3, which uses common preparation method, other and embodiment
3 is identical, and details are not described herein again.
Comparative example 1
With differing only in for embodiment 3, the comparative example aluminium oxide ceramics using common commercial alumina ceramics, other with
Embodiment 3 is identical, and details are not described herein again.
Comparative example 2
With differing only in for embodiment 3, without adding in starch in the comparative example aluminium oxide ceramics raw material, other and implementation
Example 3 is identical, and details are not described herein again.
Comparative example 3
With differing only in for embodiment 3, without adding in LaNbO in the comparative example aluminium oxide ceramics raw material4, other and reality
Apply that example 3 is identical, and details are not described herein again.
Comparative example 4
With differing only in for embodiment 3, without adding in crystal inhibiting agent in the comparative example aluminium oxide ceramics raw material, other
Same as Example 3, details are not described herein again.
Aluminium oxide ceramics made from embodiment 1-8 and comparative example 1-4 is subjected to performance detection, the testing result such as table 2
It is shown：
Table 2：Embodiment 1-8 and comparative example 1-4 aluminium oxide ceramics testing results
It can be seen from the results above that the present invention adds in LaNbO in aluminium oxide ceramics4, starch, can improve
The ability fracture toughness of the resistance crack propagation of alumina ceramic material；Meanwhile the present invention passes through dry-pressing combination isostatic cool pressing, energy
The aluminium oxide ceramics blank intensity and density enough made improves.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or supplement to described specific embodiment or substitute in a similar way, but simultaneously
The spirit or beyond the scope of the appended claims of the present invention is not deviated by.
It is skilled to this field although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of aluminium oxide ceramics, which is characterized in that the aluminium oxide ceramics includes the component of following parts by weight：Aluminium oxide
Powder：80-100 parts, binding agent：8-15 parts, LaNbO4：2-10 parts, starch：2-10 parts, sintering aid：5-15 parts, crystal inhibits
Agent：3-10 parts, plasticiser：3-15 parts, dispersant：3-15 parts.
2. a kind of aluminium oxide ceramics according to claim 1, which is characterized in that the aluminium oxide ceramics includes following weight
The component of number：Alumina powder：85-95 parts, binding agent：10-13 parts, LaNbO4：3-8 parts, starch：4-9 parts, sintering aid：
8-13 parts, crystal inhibiting agent：4-9 parts, plasticiser：5-10 parts, dispersant：5-10 parts.
3. a kind of aluminium oxide ceramics according to claim 1 or 2, which is characterized in that the sintering aid is calcium silicate powder,
The purity of the calcium silicate powder is 99-100%.
4. a kind of aluminium oxide ceramics according to claim 1, which is characterized in that the crystal inhibiting agent aoxidizes for lightweight
Magnesium.
5. a kind of aluminium oxide ceramics according to claim 1, which is characterized in that the starch is the shallow lake by pretreatment
Powder, the pretreatment specifically comprise the following steps：Starch is put into reactor and is placed in water bath with thermostatic control, is passed through ozone
Device, mechanical agitation and oxidation processes 1-2h are stood.
6. a kind of preparation method of aluminium oxide ceramics as described in claim 1, which is characterized in that the preparation method is specifically wrapped
Include following steps：
Pre- ball milling：Weigh alumina powder, LaNbO4, starch, dispersant, sintering aid and crystal inhibiting agent, and add in deionization
Water, high speed ball milling obtain slurry；
Ball milling：Ball milling obtains secondary slurry again for addition binding agent and plasticiser in the slurry；
Mist projection granulating：Antifoaming agent is added in secondary slurry and carries out being granulated to obtain pellet in Centrafugal spray drying tower；
Compression moulding：Pellet is pressed to obtain by aluminium oxide ceramics prefabricated component using dry-pressing formed machine；
Isostatic cool pressing：By aluminium oxide ceramics prefabricated component through obtaining aluminium oxide ceramics blank at isostatic cool pressing；
It is pre-sintered：In tunnel kiln by aluminium oxide ceramics blank it is pre-sintered aluminium oxide ceramics semi-finished product；
Hot isostatic pressing：Aluminium oxide ceramics semi-finished product progress hot isostatic pressing is obtained into aluminium oxide ceramics finished product.
7. a kind of preparation method of aluminium oxide ceramics according to claim 5, which is characterized in that the pellet it is a diameter of
0.10-0.15mm, moisture content 0.3-0.4%.
A kind of 8. preparation method of aluminium oxide ceramics according to claim 5, which is characterized in that the pressure of the isostatic cool pressing
Power is 200-210MPa, time 1-2h.
9. the preparation method of a kind of aluminium oxide ceramics according to claim 5, which is characterized in that the pre-sintering process
Temperature is 1610-1670 DEG C, sintering time 5-6h.
10. the preparation method of a kind of aluminium oxide ceramics according to claim 5, which is characterized in that the hot isostatic pressing
Pressure is 190-200MPa, time 1-2h.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911716A (en) * | 2018-08-15 | 2018-11-30 | 娄底市安地亚斯电子陶瓷有限公司 | A kind of auto parts and components manufacture ceramic prilling powder and preparation method thereof |
| CN109761590A (en) * | 2019-03-18 | 2019-05-17 | 中北大学 | A kind of high-temperature resistant aluminium oxide composite ceramic material and preparation method thereof |
| CN111499359A (en) * | 2020-05-13 | 2020-08-07 | 珠海粤博佳新材料有限公司 | Production process of alumina ceramic |
| CN112030028A (en) * | 2020-09-03 | 2020-12-04 | 北京安颂科技有限公司 | Aluminum oxide-based metal composite ceramic, preparation method thereof, aluminum oxide-based metal composite ceramic bone implantation prosthesis and application |
| CN113072363A (en) * | 2021-03-31 | 2021-07-06 | 广东工业大学 | High-strength and high-toughness alumina ceramic material and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496423A (en) * | 2014-11-18 | 2015-04-08 | 山东硅元新型材料有限责任公司 | 99 alumina ceramic cylinder sleeve inner liner material used for petroleum drilling well and preparation method thereof |
| KR20150070726A (en) * | 2013-12-17 | 2015-06-25 | 주식회사 전진엔텍 | The manufacturing method of high purity alumina ceramic balls using waste aluminum dross |
| CN105254283A (en) * | 2015-09-17 | 2016-01-20 | 上海应用技术学院 | Preparation method for alumina ceramic matrix material |
| CN105859263A (en) * | 2016-05-04 | 2016-08-17 | 广东工业大学 | High-performance 96 aluminum oxide ceramic and preparation method thereof |
-
2017
- 2017-12-28 CN CN201711459876.2A patent/CN108101522A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150070726A (en) * | 2013-12-17 | 2015-06-25 | 주식회사 전진엔텍 | The manufacturing method of high purity alumina ceramic balls using waste aluminum dross |
| CN104496423A (en) * | 2014-11-18 | 2015-04-08 | 山东硅元新型材料有限责任公司 | 99 alumina ceramic cylinder sleeve inner liner material used for petroleum drilling well and preparation method thereof |
| CN105254283A (en) * | 2015-09-17 | 2016-01-20 | 上海应用技术学院 | Preparation method for alumina ceramic matrix material |
| CN105859263A (en) * | 2016-05-04 | 2016-08-17 | 广东工业大学 | High-performance 96 aluminum oxide ceramic and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 周书助: "《硬质材料与工具》", 31 August 2015, 冶金工业出版社 * |
| 姜洪舟等: "《无机非金属材料热工设备》", 28 February 2015, 武汉理工大学出版社 * |
| 张志力: "正铌酸镧颗粒复合增韧氧化铝陶瓷", 《稀有金属材料与工程》 * |
| 琚晨辉: "用氧化淀粉实现氧化陶瓷的原位凝固成型", 《稀有金属材料与工程》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108911716A (en) * | 2018-08-15 | 2018-11-30 | 娄底市安地亚斯电子陶瓷有限公司 | A kind of auto parts and components manufacture ceramic prilling powder and preparation method thereof |
| CN109761590A (en) * | 2019-03-18 | 2019-05-17 | 中北大学 | A kind of high-temperature resistant aluminium oxide composite ceramic material and preparation method thereof |
| CN109761590B (en) * | 2019-03-18 | 2021-07-09 | 中北大学 | High-temperature-resistant alumina composite ceramic material and preparation method thereof |
| CN111499359A (en) * | 2020-05-13 | 2020-08-07 | 珠海粤博佳新材料有限公司 | Production process of alumina ceramic |
| CN112030028A (en) * | 2020-09-03 | 2020-12-04 | 北京安颂科技有限公司 | Aluminum oxide-based metal composite ceramic, preparation method thereof, aluminum oxide-based metal composite ceramic bone implantation prosthesis and application |
| CN112030028B (en) * | 2020-09-03 | 2022-03-01 | 北京安颂科技有限公司 | Aluminum oxide-based metal composite ceramic, preparation method thereof, aluminum oxide-based metal composite ceramic bone implantation prosthesis and application |
| CN113072363A (en) * | 2021-03-31 | 2021-07-06 | 广东工业大学 | High-strength and high-toughness alumina ceramic material and preparation method and application thereof |
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