JP5318748B2 - 陽極接合用ガラス - Google Patents
陽極接合用ガラス Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims description 189
- 239000000203 mixture Substances 0.000 claims description 64
- 239000003086 colorant Substances 0.000 claims description 26
- 238000010521 absorption reaction Methods 0.000 claims description 25
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 18
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910044991 metal oxide Inorganic materials 0.000 claims description 16
- 150000004706 metal oxides Chemical class 0.000 claims description 16
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 15
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000001678 irradiating effect Effects 0.000 claims description 8
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 7
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 7
- 239000005357 flat glass Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000001039 wet etching Methods 0.000 claims description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 5
- 229910001887 tin oxide Inorganic materials 0.000 claims description 5
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 2
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 claims description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 2
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 2
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims description 2
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 2
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 2
- 229910001935 vanadium oxide Inorganic materials 0.000 claims description 2
- 238000005530 etching Methods 0.000 description 20
- 239000010703 silicon Substances 0.000 description 16
- 229910052710 silicon Inorganic materials 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000005388 borosilicate glass Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 229910021645 metal ion Inorganic materials 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000004017 vitrification Methods 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 239000005354 aluminosilicate glass Substances 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 4
- 239000005407 aluminoborosilicate glass Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910001413 alkali metal ion Inorganic materials 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002419 bulk glass Substances 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000007496 glass forming Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- -1 oxygen ions Chemical class 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000005297 pyrex Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000411 transmission spectrum Methods 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- GCPXMJHSNVMWNM-UHFFFAOYSA-N arsenous acid Chemical compound O[As](O)O GCPXMJHSNVMWNM-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004031 devitrification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 230000001443 photoexcitation Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/02—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing by fusing glass directly to 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
-
- 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
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- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Glass Compositions (AREA)
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Description
室温から450℃における平均線膨張係数が、32×10-7〜39×10-7K-1である陽極接合用ガラスであって、
着色剤である金属酸化物を、前記基本ガラス組成に対して0.01〜5モル%含み、
535nm以下の特定の波長における吸収係数が0.5〜50cm-1である陽極接合用ガラスである。
(Li2O+Na2O+K2O)の合計は、ガラスの網目を適度に切断し、熔融温度を下げ、融液の粘性を低く抑えるために、その下限を1モル%とする。一方、熱膨張係数が大きくなるのを防ぎ、シリコンとの陽極接合を確保するために、その上限を6モル%とする。したがって、(Li2O+Na2O+K2O)の合計は、1〜6モル%の範囲とする。
なお、この平均線膨張係数は、示差熱膨張計によって、室温から450℃の間の試料の伸び率を測定し、この伸び率を温度変化の値で割ることによって求めることができる。
このように、着色剤として機能する金属酸化物を含有させることによって、535nm以下の特定の波長における吸収係数を、0.5〜50cm-1の範囲とすることができる。なお、酸化鉄の含有量については、Fe2O3に換算して計算する。
一方、吸収係数が50cm-1よりも大きい場合には、レーザ光を入射した側のガラス表面近傍のみでエネルギーが吸収されてしまい、その結果アブレーションを生じてしまう。このため、エッチング加工に望ましい変質相をガラス内部に形成させることができない。
なお、吸収係数は、光透過スペクトル測定により、特定の波長において、厚さd1の試料の透過率T1と厚さd2の試料の透過率T2を求め、Lambert則にもとづき、α=ln(T1/T2)/(d2−d1)より算出することができる(lnは自然対数)。
さらに、異なる価数のイオンの存在比率(酸化還元状態)は、脱泡などのガラス品質にも大きく影響を及ぼす。酸化セリウム(ガラス中の金属イオンとしてCe3+、Ce4+)や、酸化スズ(ガラス中の金属イオンとしてSn2+、Sn4+)などはこの典型である。
本発明の陽極接合用ガラスに好適な第一の基本組成は、
SiO2:80〜85%、
B2O3:10〜15%、
Al2O3:0〜5%、
CaO+MgO+SrO+BaO+ZnO:0〜5%、および
Li2O+Na2O+K2O:1〜6%
を含む。
SiO2:82〜83%、
B2O3:11〜12%、
Al2O3:1〜2%、および
Li2O+Na2O+K2O:4〜5%
を含む組成である。
本発明の陽極接合用ガラスに好適な第二の基本組成は、
SiO2:60〜70%、
B2O3:0〜8%、
Al2O3:10〜16%、
CaO+MgO+SrO+BaO+ZnO:5〜20%、および
Li2O+Na2O+K2O:1〜6%
を含む。
SiO2:65〜67%、
Al2O3:10〜16%、
MgO+ZnO:15〜16%、および
Li2O+Na2O+K2O:2〜4%
を含む組成である。
本発明の陽極接合用ガラスに好適な第三の基本組成は、
SiO2:25〜55%、
B2O3:20〜45%、
Al2O3:15〜25%、
CaO+MgO+SrO+BaO+ZnO:3〜18%、および
Li2O+Na2O+K2O:1〜6%
を含む。
しかし本発明では、陽極接合用ガラスとして必要な特性であるという技術的意義から、平均線膨張係数を発明の構成要件としており、この組成範囲内にあるガラスから、平均線膨張係数を満足しない組成物は、本発明の範囲には含まれない。
なお、平均線膨張係数が32×10-7〜39×10-7K-1となるガラスを作製するには、上記の組成に加えて、後述の実施例を参考にするとよい。より確実には、(1)及び(2)の基本組成の好適な範囲を採用すればよい。
湿式エッチングに用いるエッチング液としては、ガラスの変質されていない領域に対するエッチングレートよりも変質相に対するエッチングレートが大きいエッチング液を用いる。当該エッチング液の例としては、フッ酸、硫酸、塩酸、硝酸、およびこれらの混酸が挙げられる。中でも、変質相のエッチングが進みやすく、短時間に微細孔を形成できることから、フッ酸が好ましい。
この実施例1〜18は、上述した(1)ボロシリケートガラス系の基本組成を有するガラスを用いたものである。表1に示すガラス組成となるように、酸化物、炭酸塩などの一般に使用されているガラス原料を、ガラスとして400gとなるように秤量し、混合してバッチとした。なお、このガラス組成は、着色剤の金属酸化物を除き、基本ガラス組成の成分の合計で100モル%となるように調合しており、着色剤の金属酸化物は、その基本ガラス組成に対する配合率が、表1に示したモル%となるように添加した。
(1)破損しきい値以下のレーザパワーでかなり長い(概ね板厚の70%程度以上)変質相が形成される(◎)、
(2)破損しきい値以下のレーザパワーで長い(概ね板厚の50%程度以上)変質相が形成される(○)、
(3)破損しきい値以下のレーザパワーではせいぜい短い変質相(おおむね板厚の50%程度未満)しか形成されないが、破損しきい値以上のレーザパワーなら長い(概ね板厚の50%程度以上)変質相が形成される(△)、
(4)破損しきい値以下のレーザパワーでは変質相はほぼ形成されず、破損しきい値以上のレーザパワーでも短い変質相(概ね板厚の50%程度未満)しか形成されない(×)、
(5)破損しきい値以上のレーザパワーでも変質相がほぼ形成されない(××)。
この実施例19〜32は、上述した(2)アルミノシリケートガラス系の基本組成を有するガラスを用いたものである。実施例19〜32では、着色剤の金属酸化物を添加し、比較例3では添加していない。表2に示すガラス組成となるように、原料を調整し、上述した実施例と同様にして、ガラスを得た。これらのガラスについて、上記と同様の評価を行った。
Claims (7)
- モル%表示で、
SiO 2 :80〜85%、
B 2 O 3 :10〜15%、
Al 2 O 3 :0〜5%、
CaO+MgO+SrO+BaO+ZnO:0〜5%、および
Li 2 O+Na 2 O+K 2 O:1〜6%を含む基本ガラス組成を有し、
室温から450℃における平均線膨張係数が、32×10-7〜39×10-7K-1である陽極接合用ガラスであって、
着色剤である金属酸化物を、前記基本ガラス組成に対して0.01〜5モル%含み、
535nm以下の特定の波長における吸収係数が0.5〜50cm-1である陽極接合用ガラス。 - 前記基本ガラス組成が、モル%表示で、
SiO2:82〜83%、
B2O3:11〜12%、
Al2O3:1〜2%、および
Li2O+Na2O+K2O:4〜5%を含んでなり、
前記平均線膨張係数が、32×10-7〜34×10-7K-1である請求項1に記載の陽極接合用ガラス。 - モル%表示で、
SiO2:60〜70%、
B2O3:0〜8%、
Al2O3:10〜16%、
CaO+MgO+SrO+BaO+ZnO:5〜20%、および
Li2O+Na2O+K2O:1〜6%を含む基本ガラス組成を有し、
室温から450℃における平均線膨張係数が、32×10 -7 〜39×10 -7 K -1 である陽極接合用ガラスであって、
着色剤である金属酸化物を、前記基本ガラス組成に対して0.01〜5モル%含み、
535nm以下の特定の波長における吸収係数が0.5〜50cm -1 である陽極接合用ガラス。 - 前記基本ガラス組成が、モル%表示で、
SiO2:65〜67%、
Al2O3:10〜16%、
MgO+ZnO:15〜16%、および
Li2O+Na2O+K2O:2〜4%を含んでなり、
前記平均線膨張係数が、32×10-7〜36×10-7K-1である請求項3に記載の陽極接合用ガラス。 - 前記着色剤が、酸化スズ、酸化セリウム、酸化鉄、酸化チタン、酸化バナジウム、酸化クロム、酸化マンガン、酸化コバルト、酸化モリブデン、酸化タングステン、および酸化ビスマスからなる群より選ばれる少なくとも1種の金属酸化物である請求項1〜4のいずれかに記載の陽極接合用ガラス。
- 前記着色剤が、酸化スズ、酸化セリウム、および酸化鉄からなる群より選ばれる少なくとも1種の金属酸化物である請求項1〜4のいずれかに記載の陽極接合用ガラス。
- 請求項1〜4のいずれかに記載の陽極接合用ガラスを、板状ガラスとして製造する工程、当該板状ガラスの表面にレーザ光を照射して変質相を形成する工程、および変質相を形成したガラスを湿式エッチングして微細孔を形成する工程を含む、微細孔を有する陽極接合用ガラスの製造方法。
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