JPS6238295B2 - - Google Patents
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- Publication number
- JPS6238295B2 JPS6238295B2 JP18049582A JP18049582A JPS6238295B2 JP S6238295 B2 JPS6238295 B2 JP S6238295B2 JP 18049582 A JP18049582 A JP 18049582A JP 18049582 A JP18049582 A JP 18049582A JP S6238295 B2 JPS6238295 B2 JP S6238295B2
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- glass
- zro
- resistance
- tio
- Prior art date
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- 239000000203 mixture Substances 0.000 claims description 17
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 13
- 239000005354 aluminosilicate glass Substances 0.000 claims description 13
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 10
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims description 5
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- 239000011521 glass Substances 0.000 description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 239000000377 silicon dioxide Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000003513 alkali Substances 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000004576 sand Substances 0.000 description 7
- 230000004580 weight loss Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000005554 pickling Methods 0.000 description 5
- 229910052771 Terbium Inorganic materials 0.000 description 4
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 3
- 239000003258 bubble free glass Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 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
- C03C3/095—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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
Landscapes
- 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)
Description
本発明は希土類酸化物、特にEu2O3、
Tb2O7/2、Er2O3またはYb2O3と、酸化ジルコニ
ウム（ZrO2）または、酸化チタニウム（TiO2）を
含有する新規な組成からなり、1550℃以下で溶融
し得るアルミノけい酸塩ガラスに関する。
シリカ（SiO2）とアルミナ（Al2O3）からなるア
ルミノけい酸塩ガラスは、耐熱性が高く、機械的
性質も良好であり、また耐食性、耐風化性の優れ
たガラスである。しかし、この系のガラスを得る
ためには非常に高温を必要とする。一般の炭化け
い素発熱体を使用する電気炉では1550℃程度の温
度までが限度であるために、この系のガラスは一
般の電気炉による溶融法では製造することができ
ない欠点がある。
一般にアルカリ酸化物、アルカリ土類酸化物を
添加すると、溶融温度が低下し、1550℃程度の温
度で、一般の炭化けい素発熱体を使用した電気炉
を使用してガラスを製造することが可能となる。
しかし、アルカリ酸化物、アルカリ土類酸化物を
含有させると、耐熱性、機械的性質、耐食性及び
耐風化性の諸性質を低下させる問題点が生ずる。
本発明は前記の問題点のないアルミノけい酸塩
ガラスで、アルミノけい酸塩ガラスの特性を変え
ないで、しかも1550℃程度の温度で溶融して製造
し得られ、かつアルカリ酸化物、アルカリ土類酸
化物を含有しないアルミノけい酸塩ガラスを提供
するにある。
本発明者らは先に、アルミノけい酸塩系に、
Y2O3またはLa2O3を添加したある組成範囲のもの
は、1550℃程度の一般の電気炉を使用してガラス
を製造し得られること、そして、そのガラスは、
アルミノけい酸塩ガラスよりも機械的性質が優れ
ていることを明らかにした。（米国窯業協会誌第
61巻第247〜249頁（1978年））。また同じ希土類酸
化物であるEu2O3、Tb2O7/2、Er2O3および
Yb2O3の単独または２種以上の混合物を特定量含
有させると、アルカリ酸化物、アルカリ土類酸化
物を含有させないで1550℃の温度で溶融する前記
の欠点の無いアルミノけい酸塩ガラスが得られる
ことを究明し得た。（特願昭56―156499号）
本発明者らは更に研究の結果、Eu2O3、
Tb2O7/2、Er2O3およびYb2O3と共にZrO2あるい
はTiO2の特定量を含有させると溶融温度を高く
すること無く、耐代学性、耐風化性、機械的性質
および耐熱性を高められ得ることを知見し得た。
例えば、ZrO2またはTiO2を希土類アルミノけい
酸塩ガラスに含有させることにより、表―１に示
した様に機械的強度、化学的耐久性を向上させる
ことができる。
The present invention uses rare earth oxides, especially Eu 2 O 3 ,
It consists of a new composition containing Tb 2 O 7/2 , Er 2 O 3 or Yb 2 O 3 and zirconium oxide (ZrO 2 ) or titanium oxide (TiO 2 ), and is an aluminosilicon that can be melted at temperatures below 1550°C. Concerning acid salt glass. Aluminosilicate glass made of silica (SiO 2 ) and alumina (Al 2 O 3 ) has high heat resistance, good mechanical properties, and excellent corrosion resistance and weathering resistance. However, obtaining this type of glass requires extremely high temperatures. Since the electric furnace using a general silicon carbide heating element has a temperature limit of about 1550°C, this type of glass has the disadvantage that it cannot be manufactured by the melting method using a general electric furnace. Generally, when alkali oxides and alkaline earth oxides are added, the melting temperature decreases, making it possible to manufacture glass using an electric furnace using a general silicon carbide heating element at a temperature of about 1550°C. becomes.
However, when alkali oxides and alkaline earth oxides are contained, a problem arises in that various properties such as heat resistance, mechanical properties, corrosion resistance, and weathering resistance are deteriorated. The present invention is an aluminosilicate glass that does not have the above-mentioned problems, can be produced by melting at a temperature of about 1550°C without changing the properties of the aluminosilicate glass, and does not contain alkali oxides or alkaline earth. An object of the present invention is to provide an aluminosilicate glass containing no similar oxides. The present inventors previously developed an aluminosilicate-based
Glass with a certain composition range containing Y 2 O 3 or La 2 O 3 can be produced using a general electric furnace at about 1550°C, and the glass is
It was revealed that the mechanical properties are superior to those of aluminosilicate glass. (American Ceramics Association Journal No.
61, pp. 247-249 (1978)). Also, the same rare earth oxides Eu 2 O 3 , Tb 2 O 7/2 , Er 2 O 3 and
When a specific amount of Yb 2 O 3 is contained alone or in a mixture of two or more, an aluminosilicate glass that melts at a temperature of 1550°C and does not contain any alkali oxides or alkaline earth oxides and does not have the above-mentioned drawbacks can be produced. I was able to find out what I could get. (Patent Application No. 56-156499) As a result of further research, the present inventors found that Eu 2 O 3 ,
The inclusion of specific amounts of ZrO 2 or TiO 2 together with Tb 2 O 7/2 , Er 2 O 3 and Yb 2 O 3 improves the chemical resistance, weathering resistance, mechanical properties and It has been found that heat resistance can be improved.
For example, by incorporating ZrO 2 or TiO 2 into rare earth aluminosilicate glass, mechanical strength and chemical durability can be improved as shown in Table 1.
【表】
この知見に基いて本発明を完成した。
本発明のアルミノけい酸塩ガラスの組成は
Eu2O3、Tb2O7/2、Er2O3およびYb2O3から選ば
れた単独または２種以上の混合物0.5〜27モル
％、（ただし、Er2O3は25モル％を超えると溶融
できなくなり、又Yb2O3は20モル％を超えると溶
融できなくなるので超えてはいけない。）、ZrO22
〜８モル％またはTiO23〜18モル％、SiO230〜65
モル％、およびAl2O320〜35モル％からなる。
前記各組成の含有範囲外では1550℃の溶融温度
でガラスは得難い。すなわち、Eu2O3が0.5モル
％より少ないと、Eu2O3の性質が充分に発揮され
ず1550℃の温度では溶融できなくなり、27モル％
を越えると結晶化してしまう。Tb2O7/2、につ
いても同様である。Er2O3は0.5モル％より少ない
とEr2O3の性質が充分に発揮されず1550℃の温度
で溶融できなくなり、25モル％を超えると結晶化
してしまう。またYb2O3は0.5モル％より少ない
と、Yb2O3の性質が充分に発揮されず1550℃の温
度で溶融できなくなり、20モル％を超えると結晶
化してしまう。SiO2が30モル％より少ないか、
あるいは65モル％を超えると1550℃ではガラス化
し難い。またAl2O3が20モル％より少ないか、あ
るいは35％モル％を超えると溶融温度が高くな
り、1550℃ではガラスし難い。ZrO2は耐代学
性、耐風化性、耐熱性、および機械的性質を高め
る作用をするものであり、例えばガラスを使用す
る際、冷却液体を使用して冷却する必要がある場
合、耐食性を高め、長期使する上で有効である。
その量は、２〜８モル％の範囲であることが必要
であり、２モル％より少ないとZrO2の特性を充
分に発揮することができず、８モル％を超えると
結晶化してしまいガラスが得られない。TiO2
は、耐代学性、耐食性、耐風化性、耐熱性、機械
的性質を高める作用をするものであるが、３モル
％より少ないと、TiO2の特性を充分に発揮する
ことができず18モル％を超えると結晶化してしま
いガラスが得られない。
前記組成の他に、必要に応じて、Y2O3、La2O3
の単独またはその混合物を29モル％以下、Sc2O3
を15モル％以下を含有させても良い。またTiO2
とZrO2とを併せた量が23モル％以下になる様に
ZrO2とTiO2を併用しても良い。Y2O3、La2O3
は、Eu2O3、Tb2O7/2、Er2O3、Yb2O3が少量で
ある場合にガラス化を助ける作用をするが、その
量が29モル％を超えると結晶化してしまいガラス
が得られないので加える場合には、29モル％以下
であることが必要である。Sc2O3は耐化学性、耐
風化性、耐食性、機械的性質を高める作用をする
ものであるが、15モル％を超えると結晶化してし
まいガラスが得られないので加える場合には、15
モル％以下であることが必要である。TiO2と
ZrO2を併用した場合、ともに耐化学性、耐風化
性、耐食性、耐熱性、機械的性質を高める効果を
発揮するが、その合計量が23モル％を超えると結
晶化してしまい1550℃ではガラスが得られないの
で加える場合には、TiO2とZrO2の合計量を23モ
ル％以下にする必要がある。
これらのアルミノけい酸塩ガラスの中で、
Eu2O3、Er2O3を含むものは耐熱性、耐風化性、
耐食性の高強度の可視域ルミネツセンスガラスと
して、Tb2O7/2、を含むものは耐熱性、耐風化
性の高強度で大きな負のベルデ定数（分・cm-1・
Qe-1）を有する光磁性ガラスとして、Yb2O3を含
むものは、耐熱性、耐風化性の高強度で正のベル
デ定数を有する光磁性ガラスまたは赤外線ルミネ
ツセンスガラスとして利用するに適したものであ
る。
以上のように本発明のアルミノけい酸塩ガラス
は、アルミノけい酸塩ガラスの特性をそのまま保
有しながら、普通の電気炉を使用して容易にガラ
スを製造し得られる優れた効果を有するものであ
る。
実施例 １
精製された光学用酸洗い珪砂45.0モル％、
Al2O325.0モル％、Tb2O7/225.0モル％、ZrO25.0
モル％を混合し、この混合物を白金るつぼに入
れ、電気炉中で約1550℃で３時間溶融しその後ア
ルミニウム板上に流し出し放冷して無色透明な泡
の無いガラスが得られた。得られたガラスは、
850℃でも変形せずビツカース硬度は870Kgｆ／mm2
であり、又粉末法*による耐アルカリ性は、95℃
の2N―NaOH水溶液中での10日間の重量減少が、
5.0重量％であつた。
＊表―１に記載
実施例 ２
精製された光学用酸洗い珪砂44.0モル％、
Al2O328.0モル％、Eu2O310.0モル％、Yb2O310.0
モル％、ZrO28.0モル％を混合し、該混合物を実
施例１と同様にして、カツ色の透明で泡の無いガ
ラスが得られた。得られたガラスは850℃でも変
形せず、ビツカース硬度は、880Kgｆ／mm2であつ
た。又、粉末法による耐アルカリ性は、95℃の
2N―NaOH水溶液中での10日間の重量減少が4.1
重量％であつた。
実施例 ３
精製された光学用酸洗い珪砂32.0モル％、
Al2O328.0モル％、Tb2O7/225.0モル％、
TiO215.0モル％を混合し、該混合物を実施例１
と同様にして緑色の透明で泡の無いガラスが得ら
れた。得られたガラスは850℃でも変形せず、ビ
ツカース硬度は900Kgｆ／mm2であつた。又、粉末
法による耐アルカリ性は95℃の2N―NaOH水溶液
中での10日間の重量減少量が、1.0重量％であつ
た。
実施例 ４
精製された光学用酸洗い珪砂40.0モル％、
Al2O325.0モル％、Tb2O7/220.0モル％、
Er2O35.0モル％、TiO210.0モル％混合し、該混
合物を実施例１と同様にして緑色の透明で泡の無
いガラスが得られた。得られたガラスは850℃で
も変形せず、ビツカース硬度は880Kgｆ／mm2であ
つた。又、粉末法による耐アルカリ性は、95℃の
2N―NaOH水溶液中での10日間の重量減少量は、
2.8重量％であつた。
実施例 ５
精製された光学用酸洗い珪砂30.0モル％、
Al2O325.0モル％、Tb2O7/225.0モル％、
TiO215.0モル％、ZrO25.0モル％を混合し、該混
合物を実施例１と同様にして緑色の透明で泡の無
いガラスが得られた。得られたガラスは850℃で
も変形せず、ビツカース硬度は925Kgｆ／mm2であ
つた。又、粉末法による耐アルカリ性は、95℃の
2N―NaOH水溶液中での10日間の重量減少量が、
0.6重量％であつた。
実施例 ６
精製された光学用酸洗い珪砂36.0モル％、
Al2O330.0モル％、Y2O311.0モル％、Sc2O311.0モ
ル％、TiO25.0モル％、ZrO23.0モル％、
Yb2O34.0モル％を混合し、該混合物を実施例１
と同様にして緑色の透明で泡の無いガラスが得ら
れた。得られたガラスは850℃でも変形しなかつ
た。粉末法による耐アルカリ性は95℃の2N―
NaOH水溶液中での10日間の重量減少量が、1.5
重量％であつた。
実施例 ７
精製された光学用酸洗い珪砂44.0モル％、
Al2O35.0モル％、La2O35.0モル％、TiO25.0モル
％、ZrO22.0モル％を混合し、該混合物を実施例
１と同様にして緑色の透明で泡の無いガラスが得
られた。得られたガラスは850℃でも変形しなか
つた。粉末法による耐アルカリ性は、95℃の2N
―NaOH水溶液中での10日間の重量が、1.8重量
％であつた。[Table] Based on this knowledge, the present invention was completed. The composition of the aluminosilicate glass of the present invention is
Eu 2 O 3 , Tb 2 O 7/2 , Er 2 O 3 and Yb 2 O 3 alone or a mixture of two or more selected from 0.5 to 27 mol % (however, Er 2 O 3 is 25 mol %) (Yb 2 O 3 cannot be melted if it exceeds 20 mol%, so it should not be exceeded.), ZrO 2 2
~8 mol% or TiO2 3-18 mol%, SiO2 30-65
mol%, and 20-35 mol% Al2O3 . It is difficult to obtain glass at a melting temperature of 1550° C. outside the above-mentioned content ranges. In other words, if Eu 2 O 3 is less than 0.5 mol %, the properties of Eu 2 O 3 will not be fully exhibited and it will not be able to melt at a temperature of 1550 °C, and 27 mol %
If it exceeds this, it will crystallize. The same applies to Tb 2 O 7/2 . If Er 2 O 3 is less than 0.5 mol %, the properties of Er 2 O 3 will not be fully exhibited and it will not be possible to melt at a temperature of 1550° C., and if it exceeds 25 mol %, it will crystallize. Furthermore, if Yb 2 O 3 is less than 0.5 mol %, the properties of Yb 2 O 3 will not be fully exhibited and cannot be melted at a temperature of 1550° C., and if it exceeds 20 mol %, it will crystallize. SiO2 is less than 30 mol%,
Alternatively, if it exceeds 65 mol%, it is difficult to vitrify at 1550°C. Furthermore, if Al 2 O 3 is less than 20% by mole or exceeds 35% by mole, the melting temperature becomes high and it is difficult to form a glass at 1550°C. ZrO 2 has the effect of increasing corrosion resistance, weathering resistance, heat resistance, and mechanical properties. For example, when using glass and it is necessary to use a cooling liquid to cool it, it can improve corrosion resistance. It is effective for long-term use.
The amount needs to be in the range of 2 to 8 mol%; if it is less than 2 mol%, the characteristics of ZrO 2 cannot be fully exhibited, and if it exceeds 8 mol%, it will crystallize and become glassy. is not obtained. TiO2
TiO 2 has the effect of increasing corrosion resistance, corrosion resistance, weathering resistance, heat resistance, and mechanical properties, but if it is less than 3 mol%, the properties of TiO 2 cannot be fully exhibited18 If it exceeds mol%, crystallization occurs and glass cannot be obtained. In addition to the above composition, if necessary, Y 2 O 3 , La 2 O 3
Up to 29 mol% of Sc 2 O 3 alone or in a mixture thereof
may be contained in an amount of 15 mol% or less. Also TiO2
and ZrO 2 so that the combined amount is 23 mol% or less
ZrO 2 and TiO 2 may be used together. Y 2 O 3 , La 2 O 3
works to help vitrification when small amounts of Eu 2 O 3 , Tb 2 O 7/2 , Er 2 O 3 , and Yb 2 O 3 are present, but when the amount exceeds 29 mol%, crystallization occurs. If it is added, it needs to be 29 mol % or less since it does not yield solid glass. Sc 2 O 3 has the effect of increasing chemical resistance, weathering resistance, corrosion resistance, and mechanical properties, but if it exceeds 15 mol %, it will crystallize and no glass will be obtained, so when adding Sc 2 O 3, 15 mol %
It is necessary that the amount is less than mol%. TiO2 and
When ZrO 2 is used in combination, both exhibit the effect of increasing chemical resistance, weathering resistance, corrosion resistance, heat resistance, and mechanical properties, but if the total amount exceeds 23 mol%, it will crystallize and become glassy at 1550°C. cannot be obtained, so when adding TiO 2 and ZrO 2 , the total amount of TiO 2 and ZrO 2 must be 23 mol % or less. Among these aluminosilicate glasses,
Those containing Eu 2 O 3 and Er 2 O 3 are heat resistant, weathering resistant,
As corrosion-resistant, high-strength, visible-range luminescence glasses, those containing Tb 2 O 7/2 have high strength, heat resistance and weathering resistance, and a large negative Verdet constant (min cm -1
As a photomagnetic glass with Qe -1 ), those containing Yb 2 O 3 are suitable for use as photomagnetic glasses or infrared luminescent glasses that have high strength, heat resistance and weathering resistance, and a positive Verdet constant. It is something that As described above, the aluminosilicate glass of the present invention retains the characteristics of aluminosilicate glass and has excellent effects that can be easily produced using an ordinary electric furnace. be. Example 1 Purified optical grade pickled silica sand 45.0 mol%,
Al 2 O 3 25.0 mol%, Tb 2 O 7/2 25.0 mol%, ZrO 2 5.0
This mixture was placed in a platinum crucible and melted at about 1550° C. for 3 hours in an electric furnace, and then poured onto an aluminum plate and left to cool to obtain a colorless and transparent bubble-free glass. The obtained glass is
Will not deform even at 850℃ and has a Bitkers hardness of 870Kgf/mm 2
Also, the alkali resistance by powder method * is 95℃
The weight loss in 2N-NaOH aqueous solution for 10 days is
It was 5.0% by weight. *Described in Table 1 Example 2 Purified optical grade pickled silica sand 44.0 mol%,
Al 2 O 3 28.0 mol%, Eu 2 O 3 10.0 mol%, Yb 2 O 3 10.0
mol% of ZrO 2 and 8.0 mol% of ZrO 2 were mixed and the mixture was treated in the same manner as in Example 1 to obtain a cutlet-colored transparent glass without bubbles. The obtained glass did not deform even at 850° C., and its Vickers hardness was 880 Kgf/mm 2 . In addition, the alkali resistance obtained by the powder method is as follows:
Weight loss in 2N-NaOH aqueous solution for 10 days was 4.1
It was in weight%. Example 3 Purified optical pickling silica sand 32.0 mol%,
Al 2 O 3 28.0 mol%, Tb 2 O 7/2 25.0 mol%,
15.0 mol % of TiO 2 was mixed and the mixture was
A green, transparent, bubble-free glass was obtained in the same manner as above. The resulting glass did not deform even at 850° C. and had a Vickers hardness of 900 Kgf/mm 2 . In addition, the alkali resistance measured by the powder method showed that the weight loss in 2N-NaOH aqueous solution at 95°C for 10 days was 1.0% by weight. Example 4 Purified optical pickling silica sand 40.0 mol%,
Al 2 O 3 25.0 mol%, Tb 2 O 7/2 20.0 mol%,
5.0 mol % of Er 2 O 3 and 10.0 mol % of TiO 2 were mixed, and the mixture was treated in the same manner as in Example 1 to obtain a green transparent glass without bubbles. The resulting glass did not deform even at 850° C. and had a Vickers hardness of 880 Kgf/mm 2 . In addition, the alkali resistance obtained by the powder method is as follows:
The weight loss in 2N-NaOH aqueous solution for 10 days is
It was 2.8% by weight. Example 5 Purified optical pickling silica sand 30.0 mol%,
Al 2 O 3 25.0 mol%, Tb 2 O 7/2 25.0 mol%,
15.0 mol % of TiO 2 and 5.0 mol % of ZrO 2 were mixed and the mixture was treated in the same manner as in Example 1 to obtain a green transparent glass without bubbles. The resulting glass did not deform even at 850° C. and had a Vickers hardness of 925 Kgf/mm 2 . In addition, the alkali resistance obtained by the powder method is as follows:
The weight loss in 2N-NaOH aqueous solution for 10 days is
It was 0.6% by weight. Example 6 Purified optical pickling silica sand 36.0 mol%,
Al 2 O 3 30.0 mol%, Y 2 O 3 11.0 mol%, Sc 2 O 3 11.0 mol%, TiO 2 5.0 mol%, ZrO 2 3.0 mol%,
4.0 mol% of Yb 2 O 3 was mixed and the mixture was prepared in Example 1.
A green, transparent, bubble-free glass was obtained in the same manner as above. The resulting glass did not deform even at 850°C. Alkali resistance by powder method is 2N at 95℃.
Weight loss in 10 days in NaOH aqueous solution is 1.5
It was in weight%. Example 7 Purified optical pickling silica sand 44.0 mol%,
5.0 mol % of Al 2 O 3 , 5.0 mol % of La 2 O 3 , 5.0 mol % of TiO 2 , and 2.0 mol % of ZrO 2 were mixed, and the mixture was treated in the same manner as in Example 1 to obtain a green transparent glass without bubbles. Obtained. The resulting glass did not deform even at 850°C. Alkali resistance by powder method is 2N at 95℃
-The weight after 10 days in NaOH aqueous solution was 1.8% by weight.
Claims (1)
れた単独または２種以上の混合物0.5〜27モル％
（ただし、Er2O3は25モル％を超えてはならな
い。また、Yb2O3は20モル％を超えてはならな
い。）、ZrO22〜８モル％およびまたはTiO23〜18
モル％（ただし、両者の合計量が23モル％を超え
てはならない。）、SiO230〜65モル％、および
Al2O320〜35モル％の組成からなる希土類酸化物
含有アルミノけい酸塩ガラス。 ２ 特許請求の範囲第１項記載のアルミノけい酸
塩の組成以外にY2O3およびまたはLa2O329モル％
以下、Sc2O315モル％以下、ZrO28モル％以下含
有させたものからなる特許請求の範囲第１項記載
の希土類酸化物含有アルミノけい酸塩ガラス。[Claims] 1 0.5 to 27 mol% of a mixture of two or more selected from Eu 2 O 3 , Tb 2 O 7/2 , Er 2 O 3 , and Yb 2 O 3
(However, Er 2 O 3 must not exceed 25 mol %. Also, Yb 2 O 3 must not exceed 20 mol %.), ZrO 2 2-8 mol % and or TiO 2 3-18
mol% (however, the total amount of both must not exceed 23 mol%), SiO 2 30 to 65 mol%, and
Rare earth oxide-containing aluminosilicate glass having a composition of 20-35 mol% Al 2 O 3 . 2 In addition to the composition of the aluminosilicate described in claim 1, 29 mol% of Y 2 O 3 and/or La 2 O 3
The rare earth oxide-containing aluminosilicate glass according to claim 1, which contains 15 mol% or less of Sc 2 O 3 and 8 mol% or less of ZrO 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18049582A JPS5969440A (en) | 1982-10-14 | 1982-10-14 | Aluminosilicate glass containing rare earth metallic oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18049582A JPS5969440A (en) | 1982-10-14 | 1982-10-14 | Aluminosilicate glass containing rare earth metallic oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5969440A JPS5969440A (en) | 1984-04-19 |
| JPS6238295B2 true JPS6238295B2 (en) | 1987-08-17 |
Family
ID=16084235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18049582A Granted JPS5969440A (en) | 1982-10-14 | 1982-10-14 | Aluminosilicate glass containing rare earth metallic oxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5969440A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2711618B2 (en) * | 1992-06-30 | 1998-02-10 | ティーディーケイ株式会社 | Dielectric composition, multilayer wiring board and multilayer ceramic capacitor |
| JP3211683B2 (en) | 1996-07-18 | 2001-09-25 | 株式会社日立製作所 | Glass substrate for information recording disk |
| JP3989988B2 (en) * | 1996-09-04 | 2007-10-10 | Ｈｏｙａ株式会社 | Information recording medium substrate, magnetic disk, and manufacturing method thereof |
| US5747397A (en) * | 1996-11-04 | 1998-05-05 | Bay Glass Research | Optical glass |
| JP6823801B2 (en) * | 2016-10-06 | 2021-02-03 | 日本電気硝子株式会社 | Manufacturing method of glass material |
-
1982
- 1982-10-14 JP JP18049582A patent/JPS5969440A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5969440A (en) | 1984-04-19 |
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