CN104072112A - Rare earth wrapped aluminum oxide-based ceramic forming core - Google Patents
Rare earth wrapped aluminum oxide-based ceramic forming core Download PDFInfo
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- CN104072112A CN104072112A CN201410224781.2A CN201410224781A CN104072112A CN 104072112 A CN104072112 A CN 104072112A CN 201410224781 A CN201410224781 A CN 201410224781A CN 104072112 A CN104072112 A CN 104072112A
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- Prior art keywords
- rare earth
- aluminum oxide
- coated aluminum
- powder
- earth coated
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 50
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 50
- 239000000919 ceramic Substances 0.000 title claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 37
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 13
- 239000004902 Softening Agent Substances 0.000 claims description 12
- 239000002243 precursor Substances 0.000 claims description 9
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 150000003746 yttrium Chemical class 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 229910052863 mullite Inorganic materials 0.000 claims description 6
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 6
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 241000241413 Propolis Species 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000007885 magnetic separation Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229940069949 propolis Drugs 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- PCMOZDDGXKIOLL-UHFFFAOYSA-K yttrium chloride Chemical compound [Cl-].[Cl-].[Cl-].[Y+3] PCMOZDDGXKIOLL-UHFFFAOYSA-K 0.000 claims description 3
- BXJPTTGFESFXJU-UHFFFAOYSA-N yttrium(3+);trinitrate Chemical compound [Y+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O BXJPTTGFESFXJU-UHFFFAOYSA-N 0.000 claims description 3
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 claims description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 33
- 229910001069 Ti alloy Inorganic materials 0.000 description 12
- 238000005266 casting Methods 0.000 description 7
- 229910052582 BN Inorganic materials 0.000 description 5
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 5
- 238000005495 investment casting Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- BNUDRLITYNMTPD-UHFFFAOYSA-N acetic acid;zirconium Chemical compound [Zr].CC(O)=O BNUDRLITYNMTPD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a rare earth wrapped aluminum oxide-based ceramic forming core which is characterized by being prepared from the following raw materials in percentage by weight: 4-10wt% of mineralizer, 10-16wt% of plasticizer and the balance of rare earth wrapped aluminum oxide powder. As the ceramic forming core adopts the rare earth wrapped aluminum oxide as aggregate, the thermal stability and the thermal strength of aluminum oxide are improved, the crack strength, the crack toughness and the high temperature resistance are greatly improved, and the sintering temperature is reduced.
Description
Technical field
The present invention relates generally to precision casting field, relates in particular to a kind of rare earth coated aluminum oxide base ceramic core.
Background technology
The complicated inner cavity of alloy-steel casting is mainly by carrying out moulding with prefabricated ceramic core, and after foundry goods is cast, manages to remove.Its technical process is as follows: Tao Xin prepares, contains wax-pattern preparation, shell processed, shell dewaxing and roasting, alloy casting, the depoling of Tao Xin.As everyone knows, along with the startup of China's development large aircraft project and various new work engine research and development program elements, body, structure and performance thereof to titanium alloy precision casting are had higher requirement.
At present, research aluminum oxide, silica-based ceramic core comparatively widely, because core material does not possess the chemical reaction inertia good to molten titanium alloy and depoling complex process is difficult to be applied to titanium alloy fine casting field.Because boron nitride and molten titanium alloy at high temperature have higher chemical reaction inertia, and the good high-temperature creep resistance of tool, boron nitride is a kind of aggregate that is well suited for being used as titanium alloy fine casting ceramic core.Cause in recent years related scientific research personnel's concern, as the Chinese invention patent application of publication number 200610028168.9 discloses a kind of preparation method of the boron nitride ceramic shell for titanium or titanium alloy precision casting, in this invention, adopting boron nitride powder and acetic acid zirconium thereof or silicon sol is that binding agent is made painting slip.Because the shape of titanium alloy becomes increasingly complex, present titanium alloy casting is often with complicated inner cavity, and this integrity that requires core to possess good high-temperature creep resistance and then guarantee shape in titanium alloy casting process is also had higher requirement to the performance that removes to core simultaneously.But boron nitride stable chemical performance removes and has brought certain difficulty to be especially difficult to remove with mechanical means for complex-shaped core to core.In order to improve the depoling performance of core, alumina type core material also receives related scientific research personnel's concern, as the Chinese invention patent application of CN 102531648 A discloses a kind of Ti alloy casting alumina substrate ceramic core and preparation method, due to comparatively complicated in titanium alloy precision casting technique, general all more than two weeks from be prepared into duration of pouring of alloy containing the wax-pattern of Tao Xin, core in use will contact with water-based paint.After the core chance water that above-mentioned patent is prepared, hydration reaction occurs and cause the defeated and dispersed of core, therefore, above-mentioned core is difficult to be applied to titanium alloy precision casting field.
Summary of the invention
The object of the invention is just to provide a kind of rare earth coated aluminum oxide base ceramic core.
The present invention is achieved by the following technical solutions:
A kind of rare earth coated aluminum oxide base ceramic core, is characterized in that what it was made up of the raw material of following weight per-cent:
Mineralizer 4-10wt%, softening agent 10-16 wt%, surplus are rare earth coated aluminum oxide powder;
Described mineralizer be a kind of in zirconium silicate, magnesium oxide, titanium dioxide or two kinds and more than, mix composition with any mass ratio;
Described softening agent is made up of the raw material of following weight parts:
Paraffin 80-90, propolis 3-4, terpine resin 4-5, polyethylene oxide 1-2, Silane coupling agent KH550 0.1-0.2;
By above-mentioned terpine resin thermoplastic, add polyethylene oxide, after stirring, add the each raw material of residue, 600-800 rev/min of dispersed with stirring 4-6 minute, cooling discharging, obtains described softening agent;
The preparation method of described rare earth coated aluminum oxide comprises the following steps:
(1) select with α-Al
2o
3, 3 Al
2o
32SiO2 is the mullite of main crystallization, wherein α-Al
2o
3content is 80-90%, and above-mentioned mullite is pulverized to shaping, and magnetic separation de-iron, sieves, and obtaining particle diameter is 30-80 μ m, obtains basic powder;
(2) above-mentioned basic powder is mixed with polyvinyl alcohol, be heated to 75-85 DEG C, 600-1000 rev/min is uniformly mixed 10-15 minute, and discharging is cooling, obtains pre-treatment basis powder;
(3) sodium polyacrylate is joined in 1000-1500 times of water, be stirred to abundant dissolving, add above-mentioned pre-treatment basis powder, be heated to 60-70 DEG C, ultrasonic dispersion 200-250s, obtains dispersion liquid;
(4) inorganic zirconates and inorganic yttrium salts are mixed as rare earth oxide presoma using any ratio, take inorganic zirconates and inorganic yttrium salts and put into the container that fills deionized water and stir and heat and make precursor solution;
(5) above-mentioned dispersion liquid is added in precursor solution, the pH value of regulator solution, to 8-10, obtains mixed solution;
(6) above-mentioned mixed solution is dried, obtain drying powder, oven dry powder is carried out to sintering and obtain rare earth coated aluminum oxide powder, sintering temperature is 1200-1500 DEG C, and the time is 0.5-20h.
A kind of rare earth coated aluminum oxide base ceramic core, in the preparation of described rare earth coated aluminum oxide, the described mixing quality of rare earth oxide presoma and the mass ratio of basic powder are 1:10-20.
A kind of rare earth coated aluminum oxide base ceramic core, in the preparation of described rare earth coated aluminum oxide, described inorganic zirconates is zirconium chloride or zirconium nitrate, described inorganic yttrium salts is Yttrium trichloride or Yttrium trinitrate.
A kind of rare earth coated aluminum oxide base ceramic core, in the preparation of described rare earth coated aluminum oxide, described rare earth oxide precursor solution, its concentration is 0.01-2mol/L.
A kind of rare earth coated aluminum oxide base ceramic core, in the preparation of described rare earth coated aluminum oxide, the mass ratio of described basic powder and polyvinyl alcohol, sodium polyacrylate is 100:6-10:0.8-1.3.
A preparation method for rare earth coated aluminum oxide base ceramic core, is characterized in that comprising the following steps:
Mixer is heated to 120-140 DEG C, add above-mentioned softening agent, under agitation condition, add the each raw material of residue, after adding, continue to be uniformly mixed 10-12 hour, carry out as requested moulding, sintering obtains described rare earth coated aluminum oxide base ceramic core, and described sintering temperature is 1300-1600 DEG C, and the time is 0.5-20h.
Advantage of the present invention is:
The present invention makes the aggregate of ceramic core of rare earth coated aluminum oxide, strengthened thermostability and the heat resistance of aluminum oxide, has greatly improved breaking tenacity, fracture toughness property and resistance to elevated temperatures, and can reduce sintering temperature.
Embodiment
Embodiment 1
A kind of rare earth coated aluminum oxide base ceramic core, it is made up of the raw material of following weight per-cent:
Mineralizer 4-10wt%, softening agent 10-16 wt%, surplus are rare earth coated aluminum oxide powder;
Described mineralizer is zirconium silicate;
Described softening agent is made up of the raw material of following weight parts:
Paraffin 80-90, propolis 3-4, terpine resin 4-5, polyethylene oxide 1-2, Silane coupling agent KH550 0.1-0.2;
By above-mentioned terpine resin thermoplastic, add polyethylene oxide, after stirring, add the each raw material of residue, 600-800 rev/min of dispersed with stirring 4-6 minute, cooling discharging, obtains described softening agent;
The preparation method of described rare earth coated aluminum oxide comprises the following steps:
(1) select with α-Al
2o
3, 3 Al
2o
32SiO2 is the mullite of main crystallization, wherein α-Al
2o
3content is 80-90%, and above-mentioned mullite is pulverized to shaping, and magnetic separation de-iron, sieves, and obtaining particle diameter is 30-80 μ m, obtains basic powder;
(2) above-mentioned basic powder is mixed with polyvinyl alcohol, be heated to 75-85 DEG C, 1000 revs/min are uniformly mixed 10-15 minute, and discharging is cooling, obtain pre-treatment basis powder;
(3) sodium polyacrylate is joined in 1000-1500 times of water, be stirred to abundant dissolving, add above-mentioned pre-treatment basis powder, be heated to 70 DEG C, ultrasonic dispersion 250s, obtains dispersion liquid;
(4) inorganic zirconates and inorganic yttrium salts are mixed as rare earth oxide presoma using any ratio, take inorganic zirconates and inorganic yttrium salts and put into the container that fills deionized water and stir and heat and make precursor solution;
(5) above-mentioned dispersion liquid is added in precursor solution, the pH value of regulator solution, to 8-10, obtains mixed solution;
(6) above-mentioned mixed solution is dried, obtain drying powder, oven dry powder is carried out to sintering and obtain rare earth coated aluminum oxide powder, sintering temperature is 1200 DEG C, and the time is 20h.
A kind of rare earth coated aluminum oxide base ceramic core, in the preparation of described rare earth coated aluminum oxide, the described mixing quality of rare earth oxide presoma and the mass ratio of basic powder are 1:20.
A kind of rare earth coated aluminum oxide base ceramic core, in the preparation of described rare earth coated aluminum oxide, described inorganic zirconates is zirconium chloride or zirconium nitrate, described inorganic yttrium salts is Yttrium trichloride or Yttrium trinitrate.
A kind of rare earth coated aluminum oxide base ceramic core, in the preparation of described rare earth coated aluminum oxide, described rare earth oxide precursor solution, its concentration is 0.08mol/L.
A kind of rare earth coated aluminum oxide base ceramic core, in the preparation of described rare earth coated aluminum oxide, the mass ratio of described basic powder and polyvinyl alcohol, sodium polyacrylate is 100:10:1.3.
A preparation method for rare earth coated aluminum oxide base ceramic core, is characterized in that comprising the following steps:
Mixer is heated to 140 DEG C, adds above-mentioned softening agent, under agitation condition, add the each raw material of residue, after adding, continue to be uniformly mixed 12 hours, carry out as requested moulding, sintering obtains described rare earth coated aluminum oxide base ceramic core, described sintering temperature is 1300 DEG C, and the time is 10h.
Performance test:
Room temperature tensile strength is at 7.8Mpa, and bending strength is at 28Mpa, percent of firing shrinkage 0.51%.
Claims (6)
1. a rare earth coated aluminum oxide base ceramic core, is characterized in that what it was made up of the raw material of following weight per-cent:
Mineralizer 4-10wt%, softening agent 10-16 wt%, surplus are rare earth coated aluminum oxide powder;
Described mineralizer be a kind of in zirconium silicate, magnesium oxide, titanium dioxide or two kinds and more than, mix composition with any mass ratio;
Described softening agent is made up of the raw material of following weight parts:
Paraffin 80-90, propolis 3-4, terpine resin 4-5, polyethylene oxide 1-2, Silane coupling agent KH550 0.1-0.2;
By above-mentioned terpine resin thermoplastic, add polyethylene oxide, after stirring, add the each raw material of residue, 600-800 rev/min of dispersed with stirring 4-6 minute, cooling discharging, obtains described softening agent;
The preparation method of described rare earth coated aluminum oxide powder comprises the following steps:
(1) select with a-Al
2o
3, 3 Al
2o
32SiO2 is the mullite of main crystallization, wherein a-Al
2o
3content is 80-90%, and above-mentioned mullite is pulverized to shaping, and magnetic separation de-iron, sieves, and obtaining particle diameter is 30-80 μ m, obtains basic powder;
(2) above-mentioned basic powder is mixed with polyvinyl alcohol, be heated to 75-85 DEG C, 600-1000 rev/min is uniformly mixed 10-15 minute, and discharging is cooling, obtains pre-treatment basis powder;
(3) sodium polyacrylate is joined in 1000-1500 times of water, be stirred to abundant dissolving, add above-mentioned pre-treatment basis powder, be heated to 60-70 DEG C, ultrasonic dispersion 200-250s, obtains dispersion liquid;
(4) inorganic zirconates and inorganic yttrium salts are mixed as rare earth oxide presoma using any ratio, take inorganic zirconates and inorganic yttrium salts and put into the container that fills deionized water and stir and heat and make precursor solution;
(5) above-mentioned dispersion liquid is added in precursor solution, the pH value of regulator solution, to 8-10, obtains mixed solution;
(6) above-mentioned mixed solution is dried, obtain drying powder, oven dry powder is carried out to sintering and obtain rare earth coated aluminum oxide powder, sintering temperature is 1200-1500 DEG C, and the time is 0.5-20h.
2. a kind of rare earth coated aluminum oxide base ceramic core according to claim 1, is characterized in that, in the preparation of described rare earth coated aluminum oxide powder, the described mixing quality of rare earth oxide presoma and the mass ratio of basic powder are 1:10-20.
3. a kind of rare earth coated aluminum oxide base ceramic core according to claim 1, is characterized in that, in the preparation of described rare earth coated aluminum oxide powder, described inorganic zirconates is zirconium chloride or zirconium nitrate, and described inorganic yttrium salts is Yttrium trichloride or Yttrium trinitrate.
4. a kind of rare earth coated aluminum oxide base ceramic core according to claim 1, is characterized in that, in the preparation of described rare earth coated aluminum oxide powder, and described rare earth oxide precursor solution, its concentration is 0.01-2mol/L.
5. a kind of rare earth coated aluminum oxide base ceramic core according to claim 1, is characterized in that, in the preparation of described rare earth coated aluminum oxide powder, the mass ratio of described basic powder and polyvinyl alcohol, sodium polyacrylate is 100:6-10:0.8-1.3.
6. a preparation method for rare earth coated aluminum oxide base ceramic core as claimed in claim 1, is characterized in that comprising the following steps:
Mixer is heated to 120-140 DEG C, add above-mentioned softening agent, under agitation condition, add the each raw material of residue, after adding, continue to be uniformly mixed 10-12 hour, carry out as requested moulding, sintering obtains described rare earth coated aluminum oxide base ceramic core, and described sintering temperature is 1300-1600 DEG C, and the time is 0.5-20h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410224781.2A CN104072112B (en) | 2014-05-24 | 2014-05-24 | A kind of rare earth coated aluminum oxide base ceramic core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410224781.2A CN104072112B (en) | 2014-05-24 | 2014-05-24 | A kind of rare earth coated aluminum oxide base ceramic core |
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| Publication Number | Publication Date |
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| CN104072112A true CN104072112A (en) | 2014-10-01 |
| CN104072112B CN104072112B (en) | 2016-01-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496488A (en) * | 2014-12-27 | 2015-04-08 | 天津滨浦生产力促进有限公司 | Preparation method of aluminium oxide with surface coated with multilayered gradient rare earth oxide |
| CN105837188A (en) * | 2016-03-17 | 2016-08-10 | 武汉科技大学 | Alumina material and preparation method thereof |
| CN108455996A (en) * | 2018-01-04 | 2018-08-28 | 江西领航宇宙陶瓷材料有限公司 | A kind of preparation method of nano aluminum ceramics |
| CN110128159A (en) * | 2019-06-01 | 2019-08-16 | 安徽齐鑫新材料科技有限公司 | A kind of preparation method of rare earth oxide Al-base ceramic core |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537473A (en) * | 2008-03-20 | 2009-09-23 | 上海市机械制造工艺研究所有限公司 | Ceramic core for silica sol precision casting and manufacturing process thereof |
| EP2554294A2 (en) * | 2011-08-03 | 2013-02-06 | United Technologies Corporation | Hybrid core assembly |
| CN102924062A (en) * | 2012-10-25 | 2013-02-13 | 北京航空航天大学 | Preparation method of calcium-oxide-based ceramic core |
-
2014
- 2014-05-24 CN CN201410224781.2A patent/CN104072112B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537473A (en) * | 2008-03-20 | 2009-09-23 | 上海市机械制造工艺研究所有限公司 | Ceramic core for silica sol precision casting and manufacturing process thereof |
| EP2554294A2 (en) * | 2011-08-03 | 2013-02-06 | United Technologies Corporation | Hybrid core assembly |
| CN102924062A (en) * | 2012-10-25 | 2013-02-13 | 北京航空航天大学 | Preparation method of calcium-oxide-based ceramic core |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496488A (en) * | 2014-12-27 | 2015-04-08 | 天津滨浦生产力促进有限公司 | Preparation method of aluminium oxide with surface coated with multilayered gradient rare earth oxide |
| CN105837188A (en) * | 2016-03-17 | 2016-08-10 | 武汉科技大学 | Alumina material and preparation method thereof |
| CN105837188B (en) * | 2016-03-17 | 2018-03-02 | 武汉科技大学 | A kind of alumina material and preparation method thereof |
| CN108455996A (en) * | 2018-01-04 | 2018-08-28 | 江西领航宇宙陶瓷材料有限公司 | A kind of preparation method of nano aluminum ceramics |
| CN108455996B (en) * | 2018-01-04 | 2021-06-01 | 梅文婕 | Preparation method of nano aluminum ceramic |
| CN110128159A (en) * | 2019-06-01 | 2019-08-16 | 安徽齐鑫新材料科技有限公司 | A kind of preparation method of rare earth oxide Al-base ceramic core |
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| Publication number | Publication date |
|---|---|
| CN104072112B (en) | 2016-01-27 |
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