CN1180677A - Modification method for nanometre affixation of alumina ceramic - Google Patents
Modification method for nanometre affixation of alumina ceramic Download PDFInfo
- Publication number
- CN1180677A CN1180677A CN 96117151 CN96117151A CN1180677A CN 1180677 A CN1180677 A CN 1180677A CN 96117151 CN96117151 CN 96117151 CN 96117151 A CN96117151 A CN 96117151A CN 1180677 A CN1180677 A CN 1180677A
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- CN
- China
- Prior art keywords
- nano particle
- additive
- particle size
- original formulation
- nanometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Compositions Of Oxide Ceramics (AREA)
Abstract
A method for modifying alumina ceratmic may be any of the ways used in proportioning step: a, direct addition of nm-class Al2O3, b, using nm-class Al2O3 to partially rephace coarse Al2O3 crystal in original formula, c, direct addition of one or more kinds of nm-class additive, and d, using correspodnent nm-class material to replace part or all of one or more kinds of additive in original formula. The alumina ceramic prepared with present invention has higher heat shock resistance and cracking toughness and lower brittleness.
Description
The present invention relates to the aluminum oxide is the method for modifying of the pottery of base-material.
Aluminium oxide ceramics refers to aluminium oxide (Al
2O
3) be the pottery of main composition, its additional composition (or being called additive) can have: SiO
2, MgO, TiO
2, CaO, BaO and MnO etc.
The technological process of production of existing alumina-ceramic is;
Batching---batch mixing---making beating (or granulation)---moulding---sintering
The raw material that adopt have: Al
2O
3, SiO
2, MgO, TiO
2, BaO and MnO etc., raw-material granularity is generally more than the 0.2 μ m.
Aluminium oxide ceramics also according to the difference of its principal crystalline phase, can be divided into corundum ceramic, corundum---mullite ceramic and mullite ceramic.
Aluminium oxide ceramic products has good chemical stability, high hardness and wearability, and good hear resistance.But shortcoming is: fragility is big, and thermal stability (subject to drastic change of temperature or heat-shock resistance) is poor.
The object of the invention provides and a kind ofly can reduce Al
2O
3The fragility of pottery improves the method for modifying of the performances such as its thermal shock resistance, intensity and fracture toughness.
The inventive method is to continue to use existing Al
2O
3The ceramic production technology flow process:
Batching---batch mixing---making beating (or granulation)---moulding---sintering
Existing raw material: Al
2O
3, SiO
2, MgO, TiO
2, BaO and MnO, granularity is more than 0.2 μ m.The used Al of the present invention
2O
3Content be 60～99.99%, and Al
2O
3Be main composition, remaining is additive.The used Al of the present invention
2O
3And the granularity of additive is 10～100nm.
Method of modifying of the present invention is when batching or compounding process, finishes by one or more following methods:
A. directly add nanometer Al
2O
3
B. use nanometer Al
2O
3Part substitutes the coarse-grain Al in the original formulation
2O
3
C. directly add the additive of one or more nano particle sizes;
D. partly or entirely replace one or more additives in the original formulation with the material of corresponding nano particle size;
The interpolation of the nano material of method of modifying of the present invention or alternative weight range are: 0.1～40% (wt); Nanometer Al
2O
2Can be α phase or γ phase; Nanometer SiO
2Can be crystalline state or non-crystalline state; Nano-TiO
2Can be anatase octahedrite or rutile phase.
The Al for preparing with the inventive method
2O
3Pottery not only can improve ceramic intensity and fracture toughness significantly, the more important thing is and has improved thermal shock resistance.The inventive method will make Al
2O
3Pottery has and upgrades widely application prospect.
Embodiment:
1. at Al
2O
3Add 5% nanometer Al in the baseplate material
2O
3, its heat endurance is than existing Al
2O
3Ceramic substrate material improves 2～3 times, and thermal conductivity improves 10～15%, and the sintering flatness can improve 1,5 stroke, and grain size significantly reduces.
2. in 99 porcelain, add 10% nanometer Al
2O
3, through 1600 ℃ around the knot after, the pottery intensity and fracture toughness all can improve more than 50%, thermal shock resistance also increases substantially.
Claims (8)
1. the method for modifying of a nanometre affixation of alumina ceramic, technical process is: batching, and------making beating (or granulation)---moulding---sintering, the raw material granularity is the coarse-grain Al more than the 0.2 μ m to batch mixing
2O
3, SiO
2, MgO, TiO
2, BaO and MnO etc., it is characterized in that, when burden process, can: a. directly adds nanometer Al
2O
3
B. use nanometer Al
2O
3Part substitutes the coarse-grain Al in the original formulation
2O
3
C. directly add a kind of additive of nano particle size;
D. directly add the additive of several nano particle sizes;
E. the material with corresponding nano particle size partly substitutes a kind of additive in the original formulation;
F. use a kind of additive in the material replacing whole original formulation of corresponding nano particle size;
G. the material with corresponding nano particle size partly substitutes several additives in the original formulation;
H. use several additives in the material replacing whole original formulation of corresponding nano particle size.
2. the method for claim 1 is characterized in that:
A. directly add nanometer Al
2O
3
B. use nanometer Al
2O
3Part substitutes the coarse-grain Al in the original formulation
2O
3
C. directly add a kind of additive of nano particle size;
D. directly add the additive of several nano particle sizes;
E. the material with corresponding nano particle size partly substitutes a kind of additive in the original formulation;
F. use a kind of additive in the material replacing whole original formulation of corresponding nano particle size;
G. the material with corresponding nano particle size partly substitutes several additives in the original formulation;
H. use several additives in the material replacing whole original formulation of corresponding nano particle size.Also can when compounding process, carry out.
3. the method for claim 1 is characterized in that, used Al
2O
3Content be 60～99.99%; Al
2O
3It is main composition; SiO
2, MgO, TiO
2, BaO, MnO, CaO be additive.
4. the method for claim 1 is characterized in that, is used for the Al that substitutes, adds
2O
3, SiO
2, MgO, TiO
2, BaO, MnO, CaO granularity be 10～100nm.
5. the method for claim 1 is characterized in that, the interpolation of nano material, alternative weight range are 0.1～40% (wt).
6. the method for claim 1 is characterized in that, nanometer Al
2O
3Can be α phase, γ phase.
7. the method for claim 1 is characterized in that, nanometer can be crystalline state, non-crystalline state.
8. the method for claim 1 is characterized in that, nano-TiO
2Can be anatase octahedrite, rutile phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117151 CN1180677A (en) | 1996-10-25 | 1996-10-25 | Modification method for nanometre affixation of alumina ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117151 CN1180677A (en) | 1996-10-25 | 1996-10-25 | Modification method for nanometre affixation of alumina ceramic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1180677A true CN1180677A (en) | 1998-05-06 |
Family
ID=5124086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96117151 Pending CN1180677A (en) | 1996-10-25 | 1996-10-25 | Modification method for nanometre affixation of alumina ceramic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1180677A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076010C (en) * | 1999-07-23 | 2001-12-12 | 中国科学院上海硅酸盐研究所 | Preparation of nanometer yttrium aluminium garnet powder without coacervate |
| CN101898890A (en) * | 2010-04-13 | 2010-12-01 | 刘先兵 | Aluminum oxide ceramic for semiconductor equipment and preparation technology thereof |
| CN102887699A (en) * | 2012-10-18 | 2013-01-23 | 中原工学院 | Preparation method and grinding tool of water-base inorganic adhesive |
| CN103102145A (en) * | 2013-02-28 | 2013-05-15 | 江苏铭百圣耐火有限公司 | Composite aluminum oxide ceramic with improved thermal shock resistance and manufacturing method of composite aluminum oxide ceramic |
| US11581003B2 (en) | 2014-07-28 | 2023-02-14 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Harmonicity-dependent controlling of a harmonic filter tool |
-
1996
- 1996-10-25 CN CN 96117151 patent/CN1180677A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076010C (en) * | 1999-07-23 | 2001-12-12 | 中国科学院上海硅酸盐研究所 | Preparation of nanometer yttrium aluminium garnet powder without coacervate |
| CN101898890A (en) * | 2010-04-13 | 2010-12-01 | 刘先兵 | Aluminum oxide ceramic for semiconductor equipment and preparation technology thereof |
| CN102887699A (en) * | 2012-10-18 | 2013-01-23 | 中原工学院 | Preparation method and grinding tool of water-base inorganic adhesive |
| CN103102145A (en) * | 2013-02-28 | 2013-05-15 | 江苏铭百圣耐火有限公司 | Composite aluminum oxide ceramic with improved thermal shock resistance and manufacturing method of composite aluminum oxide ceramic |
| US11581003B2 (en) | 2014-07-28 | 2023-02-14 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Harmonicity-dependent controlling of a harmonic filter tool |
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Legal Events
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |