WO2012124774A1 - 化学強化用ガラス - Google Patents
化学強化用ガラス Download PDFInfo
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- WO2012124774A1 WO2012124774A1 PCT/JP2012/056744 JP2012056744W WO2012124774A1 WO 2012124774 A1 WO2012124774 A1 WO 2012124774A1 JP 2012056744 W JP2012056744 W JP 2012056744W WO 2012124774 A1 WO2012124774 A1 WO 2012124774A1
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- 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
-
- 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
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
-
- 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
- C03C4/02—Compositions for glass with special properties for coloured glass
-
- 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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
-
- 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.]
Definitions
- Patent Document 1 In recent years, an attempt has been made to use glass that has not been conventionally used as a material of a casing (Patent Document 1). According to Patent Document 1, in an electronic device such as a mobile phone, it is said that a unique decoration effect with a sense of transparency can be exhibited by forming the casing body from glass.
- the present invention is expressed in terms of mole percentage based on the following oxides: SiO 2 55 to 80%, Al 2 O 3 3 to 16%, B 2 O 3 0 to 12%, Na 2 O 5 to 16% , K 2 O 0 to 4%, MgO 0 to 15%, CaO 0 to 3%, ⁇ RO (R is Mg, Ca, Sr, Ba, Zn) 0 to 18%, ZrO 2 0 to 1%, glass for chemical strengthening containing 0.01 to 0.2% of Co 3 O 4 , 0.05 to 1% of NiO, and 0.01 to 3% of Fe 2 O 3 , Sometimes referred to as the chemically strengthened glass of the present invention).
- content of a coloring component and a color correction component shows the conversion content when each component which exists in glass shall exist as a displayed oxide.
- the glass for chemical strengthening of the present invention contains Co 3 O 4 , NiO, and Fe 2 O 3 as coloring components, thereby transmitting ultraviolet light having a wavelength of 300 nm to 380 nm and infrared light having a wavelength of 800 nm to 950 nm. It can be.
- infrared light having a wavelength of 800 nm to 950 nm is used in an infrared communication device used for data communication of a mobile phone or a portable game device.
- CaO is a component that improves meltability, and can be contained as necessary. When CaO is contained, if it is less than 0.01%, a significant effect for improving the meltability cannot be obtained. Typically, it is 0.1% or more. If the CaO content exceeds 3%, the chemical strengthening properties are degraded. The content is preferably 1% or less, typically 0.5% or less, and is preferably substantially not contained.
- NiO is a coloring component for coloring glass in a desired gray color tone, and is an essential component. If NiO is less than 0.05%, a desired gray color tone cannot be obtained in glass. Preferably it is 0.1% or more, More preferably, it is 0.2% or more. If NiO exceeds 1%, the brightness of the glass becomes excessively high, and a desired gray color tone cannot be obtained. Further, the glass becomes unstable and devitrification occurs. Preferably it is 0.9% or less, More preferably, it is 0.8% or less.
- BaO is a component for improving the meltability, and although not essential, it can be contained if necessary. When it contains BaO, if it is less than 1%, there is a possibility that a significant effect cannot be obtained with respect to improvement in meltability. Preferably it is 3% or more, and typically 6% or more. If BaO exceeds 15%, the weather resistance and chemical strengthening properties may be reduced. Preferably it is 12% or less, typically 9% or less.
- the amount of change ⁇ T in the relative value of the extinction coefficient (absorption coefficient at a wavelength of 450 nm / absorption coefficient at a wavelength of 600 nm, extinction coefficient at a wavelength of 550 nm / absorption coefficient at a wavelength of 600 nm) is in the above range.
- the variation in the absorption characteristics with respect to the light of the wavelength can be suppressed, and the glass in which the variation in the color tone is suppressed over a long period of time can be obtained.
- the relative value of the extinction coefficient (absorption coefficient of wavelength 550 nm / absorption coefficient of wavelength 600 nm, extinction coefficient of wavelength 450 nm / absorption coefficient of wavelength 600 nm) was calculated from the obtained extinction coefficient.
- the glasses of Examples 1 to 37 which are examples, have a minimum extinction coefficient of 1 mm ⁇ 1 or more at a wavelength of 380 nm to 780 nm, or an absorbance of 0.7 or more, and a wavelength in the visible range. It can be seen that a certain amount of light is absorbed. High light-shielding properties can be obtained by using these glasses for the housing of electronic devices.
- the following evaluation test was conducted to confirm the radio wave transmission of glass.
- the glass of Example 8 was cut out and processed into 50 mm ⁇ 50 mm ⁇ 0.8 mm, and the main surface was polished into a mirror surface state.
- the dielectric loss tangent in the frequency of 50 MHz, 500 MHz, 900 MHz, and 1.0 GHz was measured by the capacitance method (parallel plate method) using the LCR meter and the electrode.
- Table 9 shows the measurement results.
- the dielectric constant ( ⁇ ) of the glass at a frequency of 50 MHz was 7.6.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass (AREA)
- Liquid Crystal (AREA)
Abstract
Description
ΔT(550/600)(%)=[{A(550/600)-B(550/600)}/A(550/600)]×100 ・・・(1)
ΔT(450/600)(%)=[{A(450/600)-B(450/600)}/A(450/600)]×100 ・・・(2)
(上記式(1)において、A(550/600)は、400W高圧水銀ランプの光を100時間照射した後のガラスの分光透過率曲線から算出される、波長550nmにおける吸光係数と波長600nmにおける吸光係数との相対値であり、B(550/600)は、光照射前の前記ガラスの分光透過率曲線から算出される、波長550nmにおける吸光係数と波長600nmにおける吸光係数との相対値である。上記式(2)において、A(450/600)は、400W高圧水銀ランプの光を100時間照射した後のガラスの分光透過率曲線から算出される、波長450nmにおける吸光係数と波長600nmにおける吸光係数の相対値であり、B(450/600)は、光照射前の前記ガラスの分光透過率曲線から算出される、波長450nmにおける吸光係数と波長600nmにおける吸光係数の相対値である。)
Δa*=a*値(D65光源)-a*値(F2光源) ・・・(I)
Δb*=b*値(D65光源)-b*値(F2光源) ・・・(II)
(i)L*a*b*表色系のD65光源による反射光の色度a*とF2光源による反射光の
色度a*との差Δa*
Δa*=a*値(D65光源)-a*値(F2光源) ・・・(I)
(ii)L*a*b*表色系のD65光源による反射光の色度b*とF2光源による反射光の色度b*との差Δb*
Δb*=b*値(D65光源)-b*値(F2光源) ・・・(II)
ΔT(550/600)(%)=[{A(550/600)-B(550/600)}/A(550/600)]×100 ・・・(1)
ΔT(450/600)(%)=[{A(450/600)-B(450/600)}/A(450/600)]×100 ・・・(2)
このような砥粒によって、ガラス表面には、最終的に最大5μmのマイクロクラックが形成されると考えられる。化学強化処理による強度向上効果を有効なものとするためには、ガラス表面に形成されるマイクロクラックより深い表面圧縮応力層が形成されていることが必要である。このため、化学強化処理によって生じる表面圧縮応力層の深さは6μm以上とされる。また、使用時に表面圧縮応力層の深さを超える傷がつくと、ガラスの破壊につながるため、表面圧縮応力層は厚い方が好ましい。このため、表面圧縮応力層は、より好ましくは10μm以上、さらに好ましくは20μm以上、典型的には30μm以上である。
ΔT(550/600)(%)=[{A(550/600)-B(550/600)}/A(550/600)]×100 ・・・(1)
ΔT(450/600)(%)=[{A(450/600)-B(450/600)}/A(450/600)]×100 ・・・(2)
(上記式(1)において、A(550/600)は、400W高圧水銀ランプの光を100時間照射した後のガラスの分光透過率曲線から算出される、波長550nmにおける吸光係数と波長600nmにおける吸光係数との相対値であり、B(550/600)は、光照射前の前記ガラスの分光透過率曲線から算出される、波長550nmにおける吸光係数と波長600nmにおける吸光係数との相対値である。上記式(2)において、A(450/600)は、400W高圧水銀ランプの光を100時間照射した後のガラスの分光透過率曲線から算出される、波長450nmにおける吸光係数と波長600nmにおける吸光係数の相対値であり、B(450/600)は、光照射前の前記ガラスの分光透過率曲線から算出される、波長450nmにおける吸光係数と波長600nmにおける吸光係数の相対値である。)
Claims (14)
- 下記酸化物基準のモル百分率表示で、SiO2を55~80%、Al2O3を3~16%、B2O3を0~12%、Na2Oを5~16%、K2Oを0~4%、MgOを0~15%、CaOを0~3%、ΣRO(Rは、Mg、Ca、Sr、Ba、Zn)を0~18%、ZrO2を0~1%、Co3O4を0.01~0.2%、NiOを0.05~1%、Fe2O3を0.01~3%含有することを特徴とする化学強化用ガラス。
- 色補正成分(Ti、Cu、Ce、Er、Nd、Mn、Seの金属酸化物からなる群より選択される少なくとも1成分)を0.005~3%含有することを特徴とする請求項1に記載の化学強化用ガラス。
- TiO2を0.1~1%含有することを特徴とする請求項1または2に記載の化学強化用ガラス。
- CuOを0.1~3%含有することを特徴とする請求項1ないし3のいずれか1項に記載の化学強化用ガラス。
- 色補正成分(Ce、Er、Nd、Mn、Seの金属酸化物からなる群より選択される少なくとも1成分)を0.005~2%含有することを特徴とする請求項2ないし4のいずれか1項に記載の化学強化用ガラス。
- Co3O4/Fe2O3比が0.01~0.5であることを特徴とする請求項1ないし5のいずれか1項に記載の化学強化用ガラス。
- (SiO2+Al2O3+B2O3)/(ΣR2O+CaO+SrO+BaO+Fe2O3+Co3O4)が3以上であることを特徴とする請求項1ないし6のいずれか1項に記載の化学強化用ガラス。
- SO3を0.005~0.5%含有することを特徴とする請求項1ないし7のいずれか1項に記載の化学強化用ガラス。
- SnO2を0.005~1%含有することを特徴とする請求項1ないし8のいずれか1項に記載の化学強化用ガラス。
- 波長550nmの吸光係数/波長600nmの吸光係数、波長450nmの吸光係数/波長600nmの吸光係数が、いずれも0.7~1.2の範囲内であることを特徴とする請求項1ないし9のいずれか1項に記載の化学強化用ガラス。
- 下記式(1)、(2)で示される吸光係数の相対値の変化量ΔT(550/600)、ΔT(450/600)が絶対値で5%以下であることを特徴とする請求項1ないし10のいずれか1項に記載の化学強化用ガラス。
ΔT(550/600)(%)=[{A(550/600)-B(550/600)}/A(550/600)]×100 ・・・(1)
ΔT(450/600)(%)=[{A(450/600)-B(450/600)}/A(450/600)]×100 ・・・(2)
(上記式(1)において、A(550/600)は、400W高圧水銀ランプの光を100時間照射した後のガラスの分光透過率曲線から算出される、波長550nmにおける吸光係数と波長600nmにおける吸光係数との相対値であり、B(550/600)は、光照射前の前記ガラスの分光透過率曲線から算出される、波長550nmにおける吸光係数と波長600nmにおける吸光係数との相対値である。上記式(2)において、A(450/600)は、400W高圧水銀ランプの光を100時間照射した後のガラスの分光透過率曲線から算出される、波長450nmにおける吸光係数と波長600nmにおける吸光係数の相対値であり、B(450/600)は、光照射前の前記ガラスの分光透過率曲線から算出される、波長450nmにおける吸光係数と波長600nmにおける吸光係数の相対値である。) - 下記式(I)で示される、L*a*b*表色系のD65光源による反射光の色度a*とF2光源による反射光の色度a*との差Δa*の絶対値、および下記式(II)で示される、L*a*b*表色系のD65光源による反射光の色度b*とF2光源による反射光の色度b*との差Δb*の絶対値が、いずれも1以下であることを特徴とする請求項1ないし11のいずれか1項に記載の化学強化用ガラス。
Δa*=a*値(D65光源)-a*値(F2光源) ・・・(I)
Δb*=b*値(D65光源)-b*値(F2光源) ・・・(II) - 前記化学強化用ガラスを厚み1mmのガラス板にしたものの鏡面仕上げ表面に、ビッカース圧子を用いて圧痕を形成した際のクラックの発生率が50%となるビッカース圧子の荷重が150gf以上である請求項1ないし12のいずれか1項に記載の化学強化用ガラス。
- 請求項1ないし13のいずれか1項に記載の化学強化用ガラスを化学強化処理して得られる化学強化ガラスであって、
化学強化処理により前記化学強化ガラス表面に形成された表面圧縮応力層の深さが30μm以上であり、前記表面圧縮応力層の表面圧縮応力が550MPa以上であることを特徴とする化学強化ガラス。
Priority Applications (3)
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JP2013504771A JP5907160B2 (ja) | 2011-03-17 | 2012-03-15 | 化学強化用ガラス |
KR1020137022380A KR20140006915A (ko) | 2011-03-17 | 2012-03-15 | 화학 강화용 유리 |
US14/029,220 US9284215B2 (en) | 2011-03-17 | 2013-09-17 | Glass for chemical strengthening |
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JP2011-059661 | 2011-03-17 | ||
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JP2011064617 | 2011-03-23 |
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US14/029,220 Continuation US9284215B2 (en) | 2011-03-17 | 2013-09-17 | Glass for chemical strengthening |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014042200A1 (ja) * | 2012-09-14 | 2014-03-20 | 旭硝子株式会社 | ガラスおよび化学強化ガラス |
WO2014052711A1 (en) * | 2012-09-27 | 2014-04-03 | Corning Incorporated | Glass-ceramic(s); associated formable and/or color-tunable, crystallizable glass(es); and associated process(es) |
WO2014088094A1 (ja) * | 2012-12-07 | 2014-06-12 | 旭硝子株式会社 | 白色ガラス |
WO2014088093A1 (ja) * | 2012-12-07 | 2014-06-12 | 旭硝子株式会社 | 白色ガラス |
US10011520B2 (en) * | 2014-09-08 | 2018-07-03 | Asahi Glass Company, Limited | Ultraviolet-absorbing glass article |
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Also Published As
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US9284215B2 (en) | 2016-03-15 |
JP5907160B2 (ja) | 2016-04-20 |
TW201245081A (en) | 2012-11-16 |
JP5187463B2 (ja) | 2013-04-24 |
US20140099501A1 (en) | 2014-04-10 |
JPWO2012124774A1 (ja) | 2014-07-24 |
KR20140003546A (ko) | 2014-01-09 |
US9012343B2 (en) | 2015-04-21 |
KR20140006915A (ko) | 2014-01-16 |
US20140113141A1 (en) | 2014-04-24 |
JP5682609B2 (ja) | 2015-03-11 |
JP2013056823A (ja) | 2013-03-28 |
JPWO2012124757A1 (ja) | 2014-07-24 |
TW201245080A (en) | 2012-11-16 |
WO2012124757A1 (ja) | 2012-09-20 |
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