CN1785868A - Nano-multicrystal phase glass ceramics and its production method - Google Patents
Nano-multicrystal phase glass ceramics and its production method Download PDFInfo
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- CN1785868A CN1785868A CN 200510061239 CN200510061239A CN1785868A CN 1785868 A CN1785868 A CN 1785868A CN 200510061239 CN200510061239 CN 200510061239 CN 200510061239 A CN200510061239 A CN 200510061239A CN 1785868 A CN1785868 A CN 1785868A
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- 239000002241 glass-ceramic Substances 0.000 title claims abstract description 77
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims abstract description 52
- 239000000203 mixture Substances 0.000 claims abstract description 34
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002425 crystallisation Methods 0.000 claims abstract description 20
- 230000008025 crystallization Effects 0.000 claims abstract description 20
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000292 calcium oxide Substances 0.000 claims abstract description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 9
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001950 potassium oxide Inorganic materials 0.000 claims abstract description 7
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000000137 annealing Methods 0.000 claims abstract description 3
- 229910052810 boron oxide Inorganic materials 0.000 claims abstract description 3
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000000227 grinding Methods 0.000 claims abstract description 3
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910001947 lithium oxide Inorganic materials 0.000 claims abstract description 3
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 6
- JRIGVWDKYXCHMG-UHFFFAOYSA-N (5-arsoroso-2-hydroxyphenyl)azanium;chloride Chemical compound Cl.NC1=CC([As]=O)=CC=C1O JRIGVWDKYXCHMG-UHFFFAOYSA-N 0.000 claims description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 2
- IKWTVSLWAPBBKU-UHFFFAOYSA-N a1010_sial Chemical compound O=[As]O[As]=O IKWTVSLWAPBBKU-UHFFFAOYSA-N 0.000 claims description 2
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 claims description 2
- 229910000413 arsenic oxide Inorganic materials 0.000 claims description 2
- 229960002594 arsenic trioxide Drugs 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229950008475 oxophenarsine Drugs 0.000 claims description 2
- 229910001392 phosphorus oxide Inorganic materials 0.000 claims description 2
- 229960001866 silicon dioxide Drugs 0.000 claims description 2
- VSAISIQCTGDGPU-UHFFFAOYSA-N tetraphosphorus hexaoxide Chemical compound O1P(O2)OP3OP1OP2O3 VSAISIQCTGDGPU-UHFFFAOYSA-N 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 7
- 230000008018 melting Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 3
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 abstract 2
- 229910000410 antimony oxide Inorganic materials 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 abstract 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 1
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 24
- 230000006911 nucleation Effects 0.000 description 15
- 238000010899 nucleation Methods 0.000 description 15
- 239000006104 solid solution Substances 0.000 description 14
- 239000013078 crystal Substances 0.000 description 12
- 239000011734 sodium Substances 0.000 description 9
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- 229910010413 TiO 2 Inorganic materials 0.000 description 8
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 6
- 238000005452 bending Methods 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 229910052644 β-spodumene Inorganic materials 0.000 description 6
- 239000006018 Li-aluminosilicate Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 239000010433 feldspar Substances 0.000 description 5
- 239000003317 industrial substance Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910008556 Li2O—Al2O3—SiO2 Inorganic materials 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 229910052661 anorthite Inorganic materials 0.000 description 3
- GWWPLLOVYSCJIO-UHFFFAOYSA-N dialuminum;calcium;disilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] GWWPLLOVYSCJIO-UHFFFAOYSA-N 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004031 devitrification Methods 0.000 description 2
- 239000002667 nucleating agent Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 229910021489 α-quartz Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 206010018612 Gonorrhoea Diseases 0.000 description 1
- 229910010100 LiAlSi Inorganic materials 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 150000002642 lithium compounds Chemical class 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910000500 β-quartz Inorganic materials 0.000 description 1
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Abstract
The present invention discloses a nano multicrystal phase glass-ceramic. Its composition includes (by wt%) 70% of silicon dioxide, 3.1%-4% of lithium oxide, 15% of aluminium oxide, 0.7%-1.2% of magnesium oxide, 0.8%-1.4% of zinc oxide, 0.4%-0.7% of calcium oxide, 0.2% of boron oxide, 1.8%-3.2% of titanium oxide, 1.5%-2.3% of zirconium oxide, 1.8%-2.1% of mixture of potassium oxide and sodium oxide, 0.1%-2.0% of lithium fluoride and/or phosphorus pentoxide and 0.8%-0.9% of mixture of arsenium oxide and antimony oxide. Its production method includes the following steps: grinding the above-mentioned components, uniformly mixing them to obtain mixed material, melting at 1350-1650deg.C, forming, annealing, nucleating for 1-4hr at 500-800deg.C, then heating to 700-1000deg.C and making crystallization treatment for 1-12hr so as to obtain the invented product.
Description
Technical field
The present invention relates to a kind of glass-ceramic and production method thereof, specifically, is a kind of polycrystalline phase composite, grain-size glass-ceramic and production method thereof in the nanoscale scope that have.
Background technology
Glass-ceramic is by the prepared polycrystalline solid material of glass control crystallization.In this manual, term " nanocrystalline " refers to through behind the nucleus crystallization, and the grain-size of glass-ceramic and goods is in the nanoscale scope of 1-100nm.Spherulite is meant the size of its diameter, and axle shape crystal is meant the size of its axial diameter.As described in William McMillan, a notable feature of glass-ceramic is its superfine grain-size, this feature is determining the valuable performance of material to a great extent probably, and it is very valuable how the production method of glass-ceramic and performance thereof and its chemical constitution, crystalline structure and microstructure being interrelated.
Lithium aluminium silicon series glass-ceramic (Li
2O-Al
2O
3-SiO
2) be widely used in making astronomical telescope, cooker, tableware, electromagnetic oven panel, high temperature electric light source glass, microelectronics with substrate, laboratory with heating appliances, high-temperature heat exchanger, for goods such as silica glass, window pyrometer, radome.About the lithium aluminium silicon series glass-ceramic, in each communiques such as publication number CN 1306946A, 1495144A, 1054957A, 1607191A, 1333194A, 1005710B, 1486947A, 1054957A, 1597586A, the patent No. 97104801.0, lithium aluminium silicon series glass-ceramic and manufacture method thereof are disclosed.The principal crystalline phase of this type of glass-ceramic is β-quartzy Solid solution (Li
2OAl
2O
3NSiO
2, n 〉=2), β-quartz (SiO
2), β-triphane (Li
2OAl
2O
3NSiO
2, n 〉=4), alpha-quartz Solid solution, alpha-quartz, α-Fang Shiying Solid solution, Li
xAl
xSi
3-xO
6(0.5＜x＜1) or two lithium silicate (Li
2O2SiO
2) etc.This type of glass-ceramic is transparent, translucent or opaque; It has low thermal expansivity, high physical strength, so have good thermal property and wide Application Areas.But, when making above-mentioned glass-ceramic, basically all adopt industrial chemicals such as oxide compound, oxyhydroxide, carbonate, in recent years, the industrial chemicals price rises is accelerated, the price of special lithium-containing compound is very high, so the problem that exists the rising of industrial chemicals price to cause raw materials cost and production cost to increase.
The transparency of glass-ceramic was thought relevantly with principal crystalline phase in the past, thought that when β-quartzy Solid solution is for principal crystalline phase be transparent, and β-triphane is a White-opalescent during for principal crystalline phase.In fact, say accurately that the light transmission of glass-ceramic is relevant with grain-size, as long as grain-size is littler than wavelength of visible light, light wave just can be walked around crystal grain, thereby produces the transparency or translucency; If grain-size and visible wavelength are close, because the scattering of light effect, it is opaque that glass-ceramic then becomes.
In addition, glass-ceramic was when low-temperature heat treatment in the past, obtain the glass-ceramic that principal crystalline phase is β-quartzy Solid solution, principal crystalline phase is changed to the glass-ceramic of β-triphane after thermal treatment, therefore exist β-quartzy Solid solution to β-triphane transforming process, this may cause the structure of glass-ceramic and performance to change.
Summary of the invention
At the deficiencies in the prior art part, the invention provides a kind of thermal expansivity is low, physical strength is high, cost is low nano-multicrystal phase glass ceramics and production method thereof.
The present invention is to realize by such technical scheme for reaching above purpose: a kind of nano-multicrystal phase glass ceramics is provided, and the weight percent of this glass-ceramic consists of: SiO
2(silicon-dioxide) 70%, Li
2O (Lithium Oxide 98min) 3.1%-4%, Al
2O
3(aluminum oxide) 15%, MgO (magnesium oxide) 0.7%-1.2%, ZnO (zinc oxide) 0.8%-1.4%, CaO (calcium oxide) 0.4%-0.7%, B
2O
3(boron oxide) 0.2%, TiO
2(titanium oxide) 1.8%-3.2%, ZrO
2(zirconium white) 1.5%-2.3%, K
2O+Na
2O (mixture of potassium oxide and sodium oxide) 1.8%-2.1%, LiF (lithium fluoride) and/or P
2O
5(five phosphorus oxide) 0.1%-2.0% and As
2O
3+ Sb
2O
3(mixture of arsenic oxide arsenoxide and weisspiessglanz) 0.8%-0.9%.
A kind of improvement as nano-multicrystal phase glass ceramics of the present invention: in the mixture of potassium oxide and sodium oxide, the weight ratio of potassium oxide and sodium oxide is: 1.1-1.2: 1.
The present invention also provides the production method of above-mentioned nano-multicrystal phase glass ceramics: be configured to compound after grinding the moiety of above-mentioned glass-ceramic evenly, found moulding, annealing through 1350～1650 ℃; Through 500～800 ℃ of coring 1～4 hour, be warming up to 700～1000 ℃ of crystallization then and handled 1～12 hour again.
In the present invention, each base stock qualification reason is as follows: (by weight percentage)
SiO
2Composition is a kind of most important composition in the lithium aluminosilicate glass, and it can form β-quartzy Solid solution, β-triphane etc.If its amount in glass-ceramic is too small, then crystalline phase instability of Sheng Chenging and structure chap, if its amount is excessive, infusibility and be difficult to form glass then; So SiO in the glass-ceramic
2Composition is set at 70%.
Li
2The O composition is a kind of important element in the lithium aluminosilicate glass, can reduce glass viscosity, improve and found rate, and be the essential element that forms crystalline phase.But owing to costing an arm and a leg of lithium compound, so Li in the glass-ceramic
2The O composition is set in 3.1-4%.
Al
2O
3Composition is a kind of important element in the lithium aluminosilicate glass, can increase the chemical stability and the physical strength of glass-ceramic, but excessive then glass smelting difficulty and anti-increased devitrification resistance descend; So Al in the glass-ceramic
2O
3Composition is set at 15%.
K
2O and Na
2O the ingredients of a mixture can effectively reduce the temperature of fusion of glass, but the excessive glass-ceramic chemical stability that then causes reduces; So K in the glass-ceramic
2O and Na
2O the ingredients of a mixture is set at 1.8-2.1%, K
2O and Na
2The optimum weight ratio of O is 1.1～1.2.
MgO, ZnO composition can reduce the softening point temperature of glass, improve the chemical stability of glass-ceramic, but the excessive xenogenesis crystalline phase that then forms causes the glass-ceramic thermal expansivity to increase; Therefore the MgO composition is set at 0.7-1.2%, and the ZnO composition is set at 0.8-1.4%.
ZrO
2Composition is the effective nucleation agent of lithium aluminosilicate glass, makes crystal grain tiny and increase physical strength and chemical stability, but the excessive glass infusibility that then causes; So ZrO
2Composition is set at 1.5-2.3%.
TiO
2Composition also is the effective nucleation agent of lithium aluminosilicate glass, effect and ZrO
2Composition is identical, also increases the melting and the homogeneity of glass, but too much can cause the devitrification phenomenon; So TiO
2Composition is set at 1.8-3.2%.
Also add As in addition
2O
3With Sb
2O
3The ingredients of a mixture is used for the clarification of glass, and overall control is at 0.8-0.9%.As
2O
3With Sb
2O
3Weight ratio composition mixture, for example As arbitrarily
2O
3With Sb
2O
3Weight ratio can be 4: 5.
In the present invention, the setting reason of special composition is as follows:
P
2O
5Composition is effective nucleus agent composition, can strengthen forming and preventing that grain growing is excessive, but excessive meeting increases thermal expansivity, and produces the gonorrhoea phenomenon.LiF also is a kind of nucleus agent composition that promotes nucleation, rapid grain growth, and excessive meeting causes mechanical property, the increase thermal expansivity that grain-size is excessive, reduce glass-ceramic.Therefore the present invention contains P at least
2O
5Or LiF, perhaps contain P simultaneously
2O
5And LiF, weight ratio is set at 0.1%-2.0%.Because P
2O
5Can increase ZrO
2Solubleness, so P
2O
5Weight ratio when increasing, ZrO
2Weight ratio also correspondingly increase to some extent.When the consumption of LiF increases, corresponding minimizing Li
2The content of O.
Nano-multicrystal phase glass ceramics of the present invention and production method thereof are to obtain after contriver's secular experimental study of process and the production practice.Glass-ceramic of the present invention, its principal crystalline phase and paracrystalline phase are β-quartzy Solid solution (Li
2OAl
2O
3NSiO
2, n 〉=2), β-triphane (Li
2OAl
2O
3NSiO
2, n 〉=4), lithium feldspar (LiAlSi
4O
10) or lime feldspar (CaAl
2SiO
6), crystal shape is spherical, minor axis shape, grain-size is between 1～100nm; Linear expansivity is 0～21 * 10 in 30～600 ℃ of scopes
-7/ ℃; Bending strength is 120～150MPa or higher, Young's modulus 80-100GPa; It is transparent, translucent or opaque glass is ceramic that kind is divided into.Nano-multicrystal phase glass ceramics of the present invention, production cost is significantly less than conventional art.Nano-multicrystal phase glass ceramics production method of the present invention is mainly produced electromagnetic stove glass-ceramic panel, also can be used for manufacturing and the production with glass and ceramic products such as heating appliances of tableware for daily use or cooker, laboratory.
According to the present invention, three kinds of technical schemes are provided, as shown in table 1: (each component is weight percentage)
Table 1
| Technical parameter | Technical scheme 1 | Technical scheme 2 | Technical scheme 3 |
| SiO 2，％ | 70 | 70 | 70 |
| Li 2O，％ | 3.1-4 | 4 | 3.8-4 |
| Al 2O 3，％ | 15 | 15 | 15 |
| MgO，％ | 1.1-1.2 | 0.9-1 | 0.7 |
| ZnO，％ | 1.2-1.4 | 1-1.1 | 0.8 |
| CaO，％ | 0.5 | 0.4-0.5 | 0.7 |
| B 2O 3，％ | 0.2 | 0.2 | 0.2 |
| TiO 2，％ | 2-2.8 | 1.8-3.2 | 2.5 |
| ZrO 2，％ | 1.5-2.3 | 2.0-2.3 | 1.9-2.1 |
| K 2O+Na 2O，％ | 1.8-2.0 | 2-2.1 | 2-2.1 |
| LiF，％ | 0.1-2.0 | 0 | 0.1-1.0 |
| P 2O 5，％ | 0 | 0.1-1.6 | 0.4-1.0 |
| As 2O 3+Sb 2O 3，％ | 0.8-0.9 | 0.8 | 0.9 |
| Glass melting temperature, ℃ | 1350-1500 | 1400-1650 | 1400-1600 |
| Nucleation temperature, ℃ | 500-700 | 600-800 | 550-800 |
| Nucleation time, h | 1-4 | 1-4 | 1-4 |
| Crystallization temperature, ℃ | 700-800 | 800-1000 | 800-900 |
| Crystallization time, h | 1-12 | 1-12 | 1-12 |
In technical scheme 1～3 provided by the invention, thereby the triphane ore deposit replaces or partly replaces the lithium-containing compound (industrial chemicals) in the glass composition introduces Li
2O.
According to technical scheme 1 provided by the invention, the gained glass-ceramic is lithium aluminium silicon (Li
2O-Al
2O
3-SiO
2) system, adding weight percent in the glass component is the LiF of 0.1%-2.0%.F
-Reduce glass crystallization activation energy, promote a large amount of formation of crystallite nucleus, and self is also as the nucleating center, has improved the nucleus number greatly.Optimum nucleation temperature is controlled at 500-700 ℃, and crystallization temperature is controlled at low relatively temperature, is 700-800 ℃, to prevent the too fast growth of crystalline, is used for controlling the crystalline size of glass-ceramic of the present invention in the nanoscale scope.The principal crystalline phase of this glass-ceramic is β-triphane, and paracrystalline phase is β-quartzy Solid solution, and crystal shape is spherical, and grain-size is between 30-100nm.The linear expansivity of this glass-ceramic under 30-600 ℃ of temperature is 5-21 * 10
-7/ ℃, bending strength is 120-150MPa, Young's modulus is 80-100GPa.
According to technical scheme 2 provided by the invention, the gained glass-ceramic is lithium aluminium silicon (Li
2O-Al
2O
3-SiO
2) system, adding weight percent in the glass component is the P of 0.1%-1.6%
2O
5On the one hand, P
2O
5Can increase nucleation density, improve diffusion activation energy, reduce crystalline growth velocity, prevent that crystal is thick.But P simultaneously,
2O
5Improve the coring and the crystallization temperature of glass, so nucleation temperature is controlled between 600-800 ℃, crystallization temperature is controlled between 800-1000 ℃.The principal crystalline phase of this glass-ceramic is β-triphane, and crystal shape is spherical, and grain-size is between 20-100nm.The linear expansivity of this glass-ceramic under 30-600 ℃ of temperature is 5-20 * 10
-7/ ℃, bending strength is 135-150MPa, Young's modulus is 90-100GPa.
According to technical scheme 3 provided by the invention, the gained glass-ceramic is lithium aluminium silicon (Li
2O-Al
2O
3-SiO
2) system, adding weight percent in the glass component is the LiF of 0.1%-1.0% and the P of 0.4%-1.0%
2O
5P
2O
5Can increase nucleation density, reduce crystalline growth velocity, prevent that crystal is thick, F
-Introducing reduce crystallization activation energy, promote a large amount of formation of nucleus.Introduce P simultaneously
2O
5And F
-, so nucleation temperature is controlled between 550-800 ℃, crystallization temperature is controlled between 800-900 ℃.The principal crystalline phase of this glass-ceramic is β-triphane, and paracrystalline phase is a lime feldspar, and crystal shape is the minor axis shape, and the crystal grain axial dimension is between 20-100nm.The linear expansivity of this glass-ceramic under 30-600 ℃ of temperature is 0-17 * 10
-7/ ℃, bending strength is 130-150MPa, Young's modulus is 80-95GPa.
Description of drawings
Fig. 1 is the stereoscan photograph of the glass-ceramic of embodiment 2;
Fig. 2 is the stereoscan photograph of the glass-ceramic of embodiment 5;
Fig. 3 is the stereoscan photograph of the glass-ceramic of embodiment 8;
Fig. 4 is the stereoscan photograph of the glass-ceramic of comparative example sample.
Embodiment
With reference to above-mentioned accompanying drawing, the specific embodiment of the present invention is elaborated.
Table 2～table 4 has provided the component of embodiments of the invention 1～embodiment 9 glass-ceramic and their glass melting temperature, nucleation temperature, crystallization temperature, principal crystalline phase, paracrystalline phase, average grain size, thermal expansivity, flexural strength, Young's modulus, transmittance.These glass-ceramic are characterised in that and contain P at least
2O
5Or LiF, perhaps contain P simultaneously
2O
5And LiF.
Table 2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| SiO 2 Li 2O Al 2O 3 | 70 4 15 | 70 3.7 15 | 70 3.3 15 |
| MgO ZnO CaO B 2O 3 TiO 2 ZrO 2 K 2O+Na 2O LiF P 2O 5 As 2O 3+Sb 2O 3Glass melting temperature (℃) nucleation temperature (℃) nucleation time (h) crystallization temperature (℃) crystallization time (h) principal crystalline phase and crystallite dimension time crystalline phase and crystallite dimension thermal coefficient of expansion (* 10-7/ ℃) flexural strength (MPa) Young's modulus (GPa) | 1.1 1.2 0.5 0.2 2.8 2.3 2 0.1 0 0.8 1,450 670 1 780 2 β-spodumene; 80-150nm β-quartzy solid solution, 50-100nm 15.7 (30-600 ℃) 140 85 | 1.2 1.3 0.5 0.2 2.7 2.2 1.9 0.5 0 0.8 1,450 660 1 760 2 β-spodumene; 50-100nm β-quartzy solid solution, 50-100nm 14.0 (30-600 ℃) 131 81 | 1.3 1.4 0.6 0.2 2 1.5 1.8 20 0.9 1,450 620 1 710 2 β-spodumene; 150-200nm β-quartzy solid solution, (30-600 ℃ 125 80 for 150-200nm 13.8 |
Table 3
| Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| SiO 2 Li 2O Al 2O 3 MgO ZnO CaO B 2O 3 | 70 4 15 1 1.1 0.5 0.2 | 70 4 15 0.9 1.1 0.5 0.2 | 70 4 15 0.9 1 0.4 0.2 |
| TiO 2 ZrO 2 K 2O+Na 2O LiF P 2O 5 As 2O 3+Sb 2O 3Glass melting temperature (℃) nucleation temperature (℃) nucleation time (h) crystallization temperature (℃) crystallization time (h) principal crystalline phase and crystallite dimension thermal coefficient of expansion (* 10-7/ ℃) flexural strength (MPa) bullet spare modulus (GPa) | 3.2 2 2.1 0 0.1 0.8 1,450 720 1.5 810 4 β-spodumene, 30-80 nm 16.1 (30-600 ℃) 143 89 | 2.5 2.1 2.1 0 0.8 0.8 1,450 740 1.5 870 4 β-spodumene, 30-50nm 21.0 (30-600 ℃) 146 91 | 1.8 2.3 20 1.6 0.8 1,450 760 1.5 950 4 β-spodumene, 30-50nm 26.3 (30-600 ℃) 150 93 |
Table 4
| SiO 2 Li 2O Al 2O 3 MgO ZnO CaO B 2O 3 TiO 2 ZrO 2 K 2O+Na 2O LiF P 2O 5 As 2O 3+Sb 2O 3 | Embodiment 7 70 4 15 0.7 0.8 0.7 0.2 2.5 2.1 2 0.1 1 0.9 | Embodiment 8 70 3.9 15 0.7 0.8 0.7 0.2 2.5 22 0.5 0.8 0.9 | Embodiment 9 70 3.8 15 0.7 0.8 0.7 0.2 2.5 1.9 2.1 1 0.4 0.9 |
| Glass melting temperature (℃) nucleation temperature (℃) nucleation time (h) crystallization temperature (℃) crystallization time (h) principal crystalline phase and crystallite dimension time crystalline phase and crystallite dimension thermal coefficient of expansion (* 10-7/ ℃) flexural strength (MPa) Young's modulus (GPa) | 1,450 670 1 880 3 β-spodumenes; 50-80 nm anorthite, 50-80nm 14.3 (30-600 ℃) 145 90 | 1,450 660 1 860 3 β-spodumenes; The 50-100nm anorthite, 50-100 nm 13.1 (30-600 ℃) 138 86 | 1,450 620 1 810 3 β-spodumenes; The 70-150nm anorthite, 70-150 nm 9.1 (30-600 ℃) 131 78 |
Choose following lithium aluminium silicon series glass-ceramic embodiment as a comparison:
Moiety is: SiO
270%; Li
2O 4.5%; Al
2O
315%; MgO 0.8%; ZnO 0.8%; CaO 0.3%; TiO
23.5%; ZrO
21.9%; B
2O
30.2%; K
2O+Na
2O 2.2%; As
2O
3+ Sb
2O
30.8%.This compares sample and is characterised in that: do not contain P
2O
5Or F
-, and Li
2The O weight ratio is higher than enforcement sample of the present invention.The principal crystalline phase of the glass-ceramic of this comparison sample is β-triphane, exists β-quartzy Solid solution to change β-triphane under 870 ℃ of thermal treatments, and grain shape is spherical, grain-size 0.1-0.5 μ m.The bending strength of this glass-ceramic is 111.9MPa, Young's modulus 85.2GPa, and the 30-600 ℃ of interior thermal expansivity of temperature range is 35.1 * 10
-7/ ℃.
Compare according to the present invention and the comparing embodiment shown in the table 1-table 4, obtain:
The principal crystalline phase of glass-ceramic of the present invention and paracrystalline phase are β-quartzy Solid solution, β-triphane, lithium feldspar or lime feldspar.Add LiF or P separately
2O
5The crystal shape of glass-ceramic all be spherical, and add LiF+P simultaneously
2O
5The crystal shape of glass-ceramic be the minor axis shape, grain-size is far smaller than the comparison sample and (does not add LiF or P between 30～100nm
2O
5) 0.1-0.5 μ m.
On the other hand, the present invention's thermal expansivity in 30～600 ℃ of scopes is 0～21 * 10
-7/ ℃, the coefficient of expansion of the glass-ceramic of adding LiF is less, adds P
2O
5The thermal expansivity of glass-ceramic bigger, and add LiF+P simultaneously
2O
5The thermal expansivity of glass-ceramic between independent adding LiF or P
2O
5Between.
On the other hand, bending strength is 120～150MPa or higher, Young's modulus 80-100GPa; The flexural strength and the Young's modulus of the glass-ceramic of adding LiF are less, add P
2O
5The flexural strength and the Young's modulus of glass-ceramic bigger, and add LiF+P simultaneously
2O
5The flexural strength of glass-ceramic and Young's modulus between independent adding LiF or P
2O
5Between.
On the other hand, Li in the raw material
2The O weight ratio reduces along with the introducing of LiF, and adopt the triphane ore deposit to replace or part replace glass in forming lithium-containing compound (industrial chemicals) thus introduce Li
2O makes glass-ceramic when improving microstructure and improving performance, has also slightly reduced raw materials cost.
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (3)
1, a kind of nano-multicrystal phase glass ceramics is characterized in that the weight percent of this glass-ceramic consists of: the mixture 0.8%-0.9% of the mixture 1.8%-2.1% of silicon-dioxide 70%, Lithium Oxide 98min 3.1%-4%, aluminum oxide 15%, magnesium oxide 0.7%-1.2%, zinc oxide 0.8%-1.4%, calcium oxide 0.4%-0.7%, boron oxide 0.2%, titanium oxide 1.8%-3.2%, zirconium white 1.5%-2.3%, potassium oxide and sodium oxide, lithium fluoride and/or five phosphorus oxide 0.1%-2.0% and arsenic oxide arsenoxide and weisspiessglanz.
2, nano-multicrystal phase glass ceramics according to claim 1 is characterized in that: in the mixture of described potassium oxide and sodium oxide, the weight ratio of potassium oxide and sodium oxide is: 1.1-1.2: 1.
3, a kind of production method as the described nano-multicrystal phase glass ceramics of claim 1-2 is characterized in that: be configured to compound after grinding the moiety of described glass-ceramic evenly, found moulding, annealing through 1350～1650 ℃; Through 500～800 ℃ of coring 1～4 hour, be warming up to 700～1000 ℃ of crystallization then and handled 1～12 hour again.
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