JP6240120B2 - ダウン・ドロー用ジルコン適合性ガラス - Google Patents
ダウン・ドロー用ジルコン適合性ガラス Download PDFInfo
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- JP6240120B2 JP6240120B2 JP2015134302A JP2015134302A JP6240120B2 JP 6240120 B2 JP6240120 B2 JP 6240120B2 JP 2015134302 A JP2015134302 A JP 2015134302A JP 2015134302 A JP2015134302 A JP 2015134302A JP 6240120 B2 JP6240120 B2 JP 6240120B2
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- 239000011521 glass Substances 0.000 title claims description 164
- 229910052845 zircon Inorganic materials 0.000 title claims description 41
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 title claims description 41
- 230000015556 catabolic process Effects 0.000 claims description 40
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 37
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 32
- 230000004927 fusion Effects 0.000 claims description 7
- 238000005342 ion exchange Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 54
- 239000011734 sodium Substances 0.000 description 45
- 239000000203 mixture Substances 0.000 description 30
- 150000002500 ions Chemical group 0.000 description 15
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000007547 defect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 229910021645 metal ion Inorganic materials 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000000635 electron micrograph Methods 0.000 description 4
- 238000003286 fusion draw glass process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 3
- 238000003280 down draw process Methods 0.000 description 3
- 239000006025 fining agent Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000010309 melting process Methods 0.000 description 3
- -1 respectively Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- 229910006501 ZrSiO Inorganic materials 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001907 polarising light microscopy Methods 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000003283 slot draw process Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/18—Compositions for glass with special properties for ion-sensitive glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2204/00—Glasses, glazes or enamels with special properties
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31—Surface property or characteristic of web, sheet or block
- Y10T428/315—Surface modified glass [e.g., tempered, strengthened, etc.]
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- Chemical & Material Sciences (AREA)
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- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Description
Tmargin = Tbreakdown−T35kp …(1)
であり、T35kpはガラスの粘度が35,000ポアズのときの温度である。
ZrSiO4(結晶)→ ZrO2(結晶)+ SiO2(液体) …(2)
ここで、ZrSiO4(結晶)およびZrO2(結晶)は、それぞれ、結晶ジルコンおよび結晶ジルコニアであり、SiO2(液体)は、反応(2)によって生じた、ガラス内に溶解する液体シリカである。
Tmargin(℃)=610.6−41.0[Al2O3]+9.9[B2O3]−3.5[Na2O]
−20.2[K2O]−25.6[MgO]+34.2[CaO] …(3)
によって与えられ、ここで、濃度[Al2O3]、[B2O3]、[Na2O]、[K2O]、[MgO]、および[CaO]はモル%で表わされる。式(3)における係数は、さらに洗練されて、式:
Tmargin(℃)=446.6−50.2[Al2O3]+22.6[B2O3]−4.4[Na2O]
−3.9[K2O]−1.2[MgO+CaO] …(3a)
を与える。
Tbreakdown(予測)(℃)=2095.1−24.0[Al2O3]−8.5[B2O3]
−33.6[Na2O]−46.2[K2O]−24.7[MgO]−23.9[CaO] …(4)
ここで、カギカッコ内の濃度はモル%で表わされる。式(4)の係数はさらに洗練されて、式:
Tbreakdown(予測)(℃)=2008.8−23.5[Al2O3]−1.6[B2O3]
−33.6[Na2O]−45.5[K2O]−10.5[MgO+CaO] …(4a)
を与える。
T35kp(℃)=1484.5+17.1[Al2O3]−18.4[B2O3]−30.1[Na2O]
−26.0 [K2O]+0.9[MgO]−58.1[CaO] …(5)
図2に、予測35kpの温度に対するT35kpの測定値がプロットされ、式(5)における予測値と測定値の間の良好な相関関係を示している。式(5)の係数は、さらに洗練されて、式:
T35kp(℃)=1562.2+26.7[Al2O3]−24.2[B2O3]−38[Na2O]
−41.6 [K2O]−9.3[MgO+CaO] …(5a)
を与える。
Tmargin =610.6−41.0[Al2O3]+9.9[B2O3]−3.5[Na2O]−20.2[K2O]
−25.6[MgO]+34.2[CaO] …(3)
を得て、式(3)における係数がさらに洗練されて、式(3a):
Tmargin(℃)=446.6−50.2[Al2O3]+22.6[B2O3]−4.4[Na2O]
−3.9[K2O]−1.2[MgO+CaO] …(3a)
を得る。式(3)を満たす典型的なガラスが表3に記載されている。表3に記載される組成はモル%で表わされている。
Tmargin =591.6−41.0[Al2O3]+9.9[B2O3]−3.5[Na2O]−20.2[K2O]
−25.6[MgO]+34.2[CaO] …(6)
Tmargin(℃)=427.6−50.2[Al2O3]+22.6[B2O3]−4.4[Na2O]
−3.9[K2O]−1.2[MgO+CaO] …(6a)
しかしながら、35kpより低いまたは高い粘度でガラスを送達するのに十分な柔軟性が溶融工程において存在する。したがって、式(3)は、できる限り高い破壊マージンTmarginを目的として、適合させることができよう。その後、必須の製品特性が19℃を超える予測破壊マージンTmarginを生じない場合に、ガラス送達温度を調整してもよい。
1.SiO2およびNa2Oを含むガラスであって、
35キロポアズの粘度を有する温度T35kpを有し、
ジルコンが崩壊してZrO2およびSiO2を形成する温度TbreakdownがT35kpより高い、
ガラス。
2.SiO2+B2O3≧66モル%およびNa2O≧9モル%である、実施態様1記載のガラス。
3.イオン交換可能である、実施態様1または2記載のガラス。
4.イオン交換されて、ガラスの少なくとも1つの表面に圧縮層を形成している、実施態様3記載のガラス。
5.前記イオン交換されたガラスが、少なくとも350MPaの圧縮応力および少なくとも20μmの圧縮層の深さを有する、実施態様4記載のガラス。
6.前記イオン交換されたガラスが、少なくとも10MPaの中心張力を有する、実施態様4記載のガラス。
7.前記ガラスが、
61モル%≦SiO2 ≦75モル%;
7モル%≦Al2O3≦15モル%;
0モル%≦B2O3≦12モル%;
9モル%≦Na2O≦21モル%;
0モル%≦K2O≦4モル%;
0モル%≦ MgO≦7モル%;および
0モル%≦CaO≦3モル%
を含む、実施態様1から6いずれか記載のガラス。
8.Tmargin= Tbreakdown−T35kpであり、Tmargin=610.6−41.0[Al2O3]+9.9[B2O3]−3.5[Na2O]−20.2[K2O]−25.6[MgO]+34.2[CaO]であり、ここで、濃度 [Al2O3]、[B2O3]、[Na2O]、[K2O]、[MgO]、および[CaO]はモル%で表わされており、Tmargin≧0である、実施態様1から7いずれか記載のガラス。
9.Tmargin= Tbreakdown−T35kpであり、Tmargin(℃)=446.6−50.2[Al2O3]+22.6[B2O3]−4.4[Na2O]−3.9[K2O]−1.2[MgO+CaO]であり、濃度 [Al2O3]、[B2O3]、[Na2O]、[K2O]、[MgO]、および[CaO]はモル%で表わされており、Tmargin≧0である、実施態様1から7いずれか記載のガラス。
10.ダウン・ドロー可能である、実施態様1から9いずれか記載のガラス。
11.フュージョン・ドローによってガラスシートに成形される、実施態様1から10いずれか記載のガラス。
12.前記ガラスシートがガラスシート1ポンドあたり固体ZrO2の包有物を1つ未満しか有さない、実施態様11記載のガラス。
13.B2O3+Na2O+K2O+MgO+CaO≧18モル%である、実施態様1から12いずれか記載のガラス。
14.B2O3+Na2O+K2O−Al2O3≧0モル%である、実施態様1から13いずれか記載のガラス。
15.約100キロポアズを超える液相粘度を有する、実施態様1から14いずれか記載のガラス。
16.1650℃以下の、350ポアズにおける温度T350を有する、実施態様1から15いずれか記載のガラス。
17.電子機器のカバープレート、ウィンドウ、ケーシング、表示画面、およびタッチパネルのうちの1つに成形される、実施態様1から16いずれか記載のガラス。
18.SiO2およびNa2Oを含み、35キロポアズの粘度を有する温度T35kpを有するガラスであって、SiO2+B2O3≧66モル%およびNa2O≧9モル%であり、ジルコンが崩壊してZrO2およびSiO2を形成する温度TbreakdownがT35kpより高い、ガラス。
19.イオン交換可能である、実施態様17記載のガラス。
20.イオン交換されて、ガラスの少なくとも1つの表面に圧縮層を形成している、実施態様18記載のガラス。
21.前記イオン交換されたガラスが、少なくとも350MPaの圧縮応力および少なくとも20μmの圧縮層の深さを有する、実施態様20記載のガラス。
22.前記イオン交換されたガラスが、少なくとも10MPaの中心張力を有する、実施態様20記載のガラス。
23.前記ガラスが、
61モル%≦SiO2 ≦75モル%;
7モル%≦Al2O3≦15モル%;
0モル%≦B2O3≦12モル%;
9モル%≦Na2O≦21モル%;
0モル%≦K2O≦4モル%;
0モル%≦ MgO≦7モル%;および
0モル%≦CaO≦3モル%
を含む、実施態様18から22いずれか記載のガラス。
24.Tmargin= Tbreakdown−T35kpであり、Tmargin=610.6−41.0[Al2O3]+9.9[B2O3]−3.5[Na2O]−20.2[K2O]−25.6[MgO]+34.2[CaO]であり、ここで、濃度 [Al2O3]、[B2O3]、[Na2O]、[K2O]、[MgO]、および[CaO]はモル%で表わされており、Tmargin≧0である、実施態様18から23いずれか記載のガラス。
25.Tmargin= Tbreakdown−T35kpであり、Tmargin(℃)=446.6−50.2[Al2O3]+22.6[B2O3]−4.4[Na2O]−3.9[K2O]−1.2[MgO+CaO]であり、濃度 [Al2O3]、[B2O3]、[Na2O]、[K2O]、[MgO]、および[CaO]はモル%で表わされており、Tmargin≧0である、実施態様18から23いずれか記載のガラス。
26.ダウン・ドロー可能である、実施態様18から25いずれか記載のガラス。
27.フュージョン・ドローによってガラスシートに成形される、実施態様18から26いずれか記載のガラス。
28.前記ガラスシートがガラスシート1ポンドあたり固体ZrO2の包有物を1つ未満しか有さない、実施態様27記載のガラス。
29.B2O3+Na2O+K2O+MgO+CaO≧18モル%である、実施態様18から28いずれか記載のガラス。
30.B2O3+Na2O+K2O−Al2O3≧0モル%である、実施態様18から29いずれか記載のガラス。
31.約100キロポアズを超える液相粘度を有する、実施態様18から30いずれか記載のガラス。
32.1650℃以下の、350ポアズにおける温度T350を有する、実施態様18から31いずれか記載のガラス。
33.電子機器のカバープレート、ウィンドウ、ケーシング、表示画面、およびタッチパネルのうちの1つに成形される、実施態様18から32いずれか記載のガラス。
Claims (7)
- ガラスであって、
61モル%≦SiO2 ≦75モル%;
7モル%≦Al2O3≦15モル%;
0モル%≦B2O3≦12モル%;
11.49モル%≦Na2O≦21モル%;
0モル%≦K2O≦4モル%;
0モル%≦ MgO≦7モル%;
0モル%≦CaO≦1.61モル%;および
総濃度で500重量ppm未満のAs2O3およびSb2O3;を含み、
リチウムを含まず、
35キロポアズの粘度を有する温度T35kpを有し、
SiO2+B2O3≧66モル%であり、
ジルコンが崩壊してZrO2およびSiO2を形成する温度TbreakdownがT35kpより高く、
Tmargin= Tbreakdown−T35kpであり、ここで、Tmargin(℃)=446.6−50.2[Al2O3]+22.6[B2O3]−4.4[Na2O]−3.9[K2O]−1.2[MgO+CaO]であり、濃度 [Al2O3]、[B2O3]、[Na2O]、[K2O]、[MgO]、および[CaO]はモル%で表わされており、T margin >0であり、
電子機器のカバープレート、ウィンドウ、ケーシング、表示画面、およびタッチパネルのうちの1つの成形用であることを特徴とする、ガラス。 - ガラスの少なくとも1つの表面にイオン交換圧縮層を有し、該圧縮層が、少なくとも350MPaの圧縮応力および少なくとも20μmの圧縮層の深さを有することを特徴とする、請求項1記載のガラス。
- B2O3+Na2O+K2O+MgO+CaO≧18モル%であることを特徴とする請求項1または2記載のガラス。
- B2O3+Na2O+K2O−Al2O3≧0モル%であることを特徴とする請求項1〜3いずれか1項記載のガラス。
- 100キロポアズを超える液相粘度を有することを特徴とする請求項1〜4いずれか1項記載のガラス。
- 1650℃以下の、350ポアズにおける温度T350を有することを特徴とする請求項1〜5いずれか1項記載のガラス。
- 請求項1〜6いずれか1項記載のガラスを材料としたフュージョン・ドロー成形ガラスシートであって、ガラスシート1ポンドあたり固体ZrO2の包有物を1つ未満しか有さないことを特徴とするガラスシート。
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TWI561480B (en) | 2016-12-11 |
WO2011022639A2 (en) | 2011-02-24 |
US9556058B2 (en) | 2017-01-31 |
CN102741176B (zh) | 2015-12-02 |
US20150024210A1 (en) | 2015-01-22 |
TW201119956A (en) | 2011-06-16 |
KR20120066022A (ko) | 2012-06-21 |
JP2015205818A (ja) | 2015-11-19 |
KR101831996B1 (ko) | 2018-04-04 |
WO2011022639A3 (en) | 2011-07-28 |
CN102741176A (zh) | 2012-10-17 |
EP2467339A2 (en) | 2012-06-27 |
US8802581B2 (en) | 2014-08-12 |
IN2012DN01534A (ja) | 2015-06-05 |
EP2467339B1 (en) | 2021-09-15 |
US20110045961A1 (en) | 2011-02-24 |
BR112012003832A2 (pt) | 2017-08-29 |
JP2013502370A (ja) | 2013-01-24 |
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