JPH09169542A - Transparent crystallized glass - Google Patents
Transparent crystallized glassInfo
- Publication number
- JPH09169542A JPH09169542A JP25798196A JP25798196A JPH09169542A JP H09169542 A JPH09169542 A JP H09169542A JP 25798196 A JP25798196 A JP 25798196A JP 25798196 A JP25798196 A JP 25798196A JP H09169542 A JPH09169542 A JP H09169542A
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- JP
- Japan
- Prior art keywords
- crystallized glass
- glass
- zro
- short wavelength
- crystallization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、透明結晶化ガラス
に関し可視光短波長域から紫外域にかけての透過率が優
れた透明結晶化ガラスに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to transparent crystallized glass, and more particularly to transparent crystallized glass having excellent transmittance in the visible light short wavelength region to the ultraviolet region.
【０００２】[0002]
【従来の技術】近年、エレクトロニクス産業の発展に伴
い、ＩＣフォトマスクや精密光学装置用の部材として、
低膨張で寸法の温度変化が小さく、しかも光源に用いる
短波長光、例えば４３６ｎｍあるいは３６５ｎｍの透過
率が高い透明材料の要求が高まっている。シリカガラス
は、膨張率が低くフォトマスクや種種の光学用の材料と
して使用されているが、一般に高価であり、例えばフォ
トマスク基板の用途においては、クロムの付着性が悪く
電気伝導率が小さくて帯電しやすいという問題がある。
また、低膨張の透明材としては、Ｌｉ2Ｏ−Ａｌ2Ｏ3−
ＳｉＯ2系低膨張透明結晶化ガラスが知られている。こ
れらの結晶化ガラスの中には、組成あるいは熱処理条件
によって、透明なものが存在するが、その多くのもの
は、ＴｉＯ2を結晶化促進剤として１．５〜５％程度含
んだβ−石英固溶体結晶を主結晶とする結晶化ガラスで
ある。この結晶化ガラスは、優れた透明性と小さな熱膨
張係数に基づく優れた耐熱衝撃性により、耐熱食器、調
理器具、反射望遠鏡、光学機器の反射鏡のミラーブラン
クスなどに用いられている。しかしながら、この種の結
晶化ガラスは、ＴｉＯ2に起因する吸収のため、短波長
側の透過性が悪い。2. Description of the Related Art In recent years, with the development of the electronics industry, as members for IC photomasks and precision optical devices,
There is an increasing demand for a transparent material that has a low expansion, a small temperature change in dimensions, and a short wavelength light used for a light source, for example, a high transmittance of 436 nm or 365 nm. Silica glass has a low expansion coefficient and is used as a material for photomasks and various kinds of optics, but it is generally expensive.For example, in the application of photomask substrates, the adhesion of chromium is poor and the electrical conductivity is low. There is a problem that it is easily charged.
Further, as the low expansion transparent material, Li 2 O-Al 2 O 3-
A SiO 2 type low expansion transparent crystallized glass is known. Although some of these crystallized glasses are transparent depending on the composition or heat treatment conditions, most of them are β-quartz containing TiO 2 as a crystallization accelerator in an amount of about 1.5 to 5%. It is a crystallized glass containing a solid solution crystal as a main crystal. This crystallized glass is used for heat-resistant tableware, cooking utensils, reflecting telescopes, mirror blanks for reflecting mirrors of optical equipment, etc. due to its excellent transparency and excellent thermal shock resistance based on a small coefficient of thermal expansion. However, this type of crystallized glass has poor transmittance on the short wavelength side because of absorption due to TiO 2 .
【０００３】一方、ＴｉＯ２を含まないＬｉ2Ｏ−Ａｌ2
Ｏ3−ＳｉＯ2系低膨張透明結晶化ガラスとしては、結晶
化促進剤としてＺｒＯ2のみを含むもの（例えば、特公
昭３７−１５３２０号、特公昭３９−７９１４号公
報）、あるいはＳｎＯ2及びＺｒＯ2を含むもの（例え
ば、特公昭４２−９６００号、特公昭４７−４１９８号
公報）が知られている。しかしながら、これらの結晶化
ガラスは、ＺｒＯ2のみを結晶化促進剤として含む場合
には溶解が困難であり、ＺｒＯ2及びＳｎＯ2を結晶化促
進剤として含む場合には、半透明であるか、表面に光沢
を有する程度で光の透過性が悪く、上記短波長域で透過
率のよい結晶化ガラスとはならなかった。On the other hand, Li 2 O-Al 2 containing no TiO 2
As the O 3 —SiO 2 -based low expansion transparent crystallized glass, one containing only ZrO 2 as a crystallization accelerator (for example, JP-B-37-15320 and JP-B-39-7914), or SnO 2 and ZrO. Those containing 2 (for example, Japanese Examined Patent Publication Nos. 42-9600 and 47-4198) are known. However, these crystallized glasses are difficult to melt when only ZrO 2 is contained as a crystallization accelerator, and are translucent when ZrO 2 and SnO 2 are contained as crystallization accelerators. The surface was glossy and the light transmittance was poor, so that the crystallized glass did not have good transmittance in the above short wavelength region.
【０００４】[0004]
【発明が解決しようとする問題点】本発明は、かかる事
情に鑑み、熱膨張率が小さく、また、優れた短波長光透
過性を有する低膨張透明結晶化ガラスを提供することを
目的とする。SUMMARY OF THE INVENTION In view of the above circumstances, the present invention has an object of providing a low expansion transparent crystallized glass having a small coefficient of thermal expansion and an excellent short wavelength light transmittance. .
【０００５】[0005]
【課題を解決するための手段】本発明は、重量％で Ｌｉ2Ｏ ３．０〜５．０ Ｎａ2Ｏ ０〜３．０ Ｋ2Ｏ ０〜３．０ Ｎａ2Ｏ＋Ｋ2Ｏ ０．３〜３．０ ＭｇＯ ０〜２．０ ＺｎＯ ０〜２．０ Ａｌ2Ｏ3 １８．０〜２４．０ ＳｉＯ2 ６３．５〜７２．０ ＳｎＯ2 １．０〜４．０ ＴｉＯ2 ０〜１ ＺｒＯ2 １．０〜４．０ ＴｉＯ2＋ＺｒＯ2 ３．５〜７．０ Ｐ2Ｏ5 ０〜４．０ の組成を有し、β−石英固溶体結晶を主たる結晶相と
し、２．３ｍｍ厚における分光透過率曲線の短波長側の
吸収端が３１３ｎｍ以下であることを特徴とする透明結
晶化ガラスである。SUMMARY OF THE INVENTION The present invention provides, in weight percent, Li 2 O 3.0-5.0 Na 2 O 0-3.0 K 2 O 0-3.0 Na 2 O + K 2 O 0.3. -3.0 MgO 0-2.0 ZnO 0-2.0 Al 2 O 3 18.0-24.0 SiO 2 63.5-72.0 SnO 2 1.0-4.0 TiO 2 0-1 It has a composition of ZrO 2 1.0~4.0 TiO 2 + ZrO 2 3.5~7.0 P 2 O 5 0~4.0, the β- quartz solid solution crystal as a main crystal phase, 2.3 mm thick In the transparent crystallized glass, the absorption edge on the short wavelength side of the spectral transmittance curve in is 313 nm or less.
【０００６】この結晶化ガラスは、上記成分を有する原
料を溶融してガラス体を得た後に、このガラス体を７０
０〜９００℃の温度域で０．５〜１０時間保持すること
等により得ることができる。この熱処理により作成され
た結晶化ガラスは、通常、粒径１００ｎｍ以下の微細な
結晶粒子をガラス層のマトリックス内に均一に分散させ
た構造となっている。熱処理の加熱スケジュールは、１
段階でも目的とする結晶化物が得られるが、多段階熱処
理（例えば２段階あるいは３段階）を行った方が、結晶
粒径が小さくなり散乱による透過率低下が低減してより
透過率の高い結晶化物が得られるので好ましい。本発明
における結晶化促進剤であるＳｎＯ2およびＺｒＯ2の作
用は明確ではない。しかしながら、本発明において限定
している程度の量のＺｒＯ2、ＳｎＯ2をそれぞれ単独で
加えたのみでは、いずれも目的とする微細な結晶が均一
に析出した透明結晶化ガラスが得られなかった。すなわ
ち、ＺｒＯ2のみを加えた場合には結晶化が非常に起こ
りにくく、比較的高温で長時間熱処理して初めて結晶化
が起こる状態であった。得られた結晶化ガラスも粗大な
結晶粒が不均一に析出した透明性の悪い、著しい場合に
は、全く不透明な結晶化物であった。また、ＳｎＯ2の
みを加えた場合には、加熱処理の初期段階でＳｎＯ2の
微細な結晶が生じ、ガラスは白濁状態となった。さらに
加熱処理を継続するとこの結晶が発達して、不透明とな
った。この不透明な結晶化ガラスは、さらに高温で加熱
しても不透明化が進行するだけで透明な結晶化物は得ら
れなかった。本発明者らは、結晶化促進剤としてＴｉＯ
2の代わりに結晶化促進剤としてＳｎＯ2およびＺｒＯ2
を採用することにより、これら問題点を解決したばかり
ではなく、さらにその余の成分も上記所定範囲とするこ
とにより、熱膨張率が低く、短波長側の吸収端が３１３
ｎｍ以下である程度にまで、透明性の高い低膨張透明結
晶化ガラスを得ることに成功した。In this crystallized glass, the raw material having the above-mentioned components is melted to obtain a glass body.
It can be obtained by holding in the temperature range of 0 to 900 ° C. for 0.5 to 10 hours. The crystallized glass produced by this heat treatment usually has a structure in which fine crystal particles having a particle diameter of 100 nm or less are uniformly dispersed in the matrix of the glass layer. The heating schedule for heat treatment is 1
Although the target crystallized product can be obtained even in stages, a crystal having a higher transmittance is obtained by performing a multi-step heat treatment (for example, two steps or three steps) because the crystal grain size becomes smaller and the decrease in transmittance due to scattering is reduced. This is preferable because a compound can be obtained. The action of SnO 2 and ZrO 2 which are crystallization accelerators in the present invention is not clear. However, by only adding ZrO 2 and SnO 2 in the amounts limited in the present invention alone, neither of the intended transparent crystallized glasses in which fine crystals were uniformly deposited was obtained. That is, when only ZrO 2 was added, crystallization was extremely unlikely to occur, and it was in a state where crystallization did not occur only after heat treatment at a relatively high temperature for a long time. The obtained crystallized glass was also a poorly transparent crystal in which coarse crystal grains were unevenly precipitated. Further, when only SnO 2 was added, fine crystals of SnO 2 were generated in the initial stage of the heat treatment, and the glass became cloudy. When the heat treatment was further continued, the crystals developed and became opaque. Even if this opaque crystallized glass was further heated at a high temperature, only opacity progressed, and a transparent crystallized product could not be obtained. The present inventors have found that TiO as a crystallization accelerator
SnO 2 and ZrO 2 as a second crystallization promoter instead
Not only solves these problems, but also makes the remaining components fall within the above-specified range, the coefficient of thermal expansion is low and the absorption edge on the short wavelength side is 313.
We succeeded in obtaining a low-expansion transparent crystallized glass having a high transparency to a certain extent of less than nm.
【０００７】本発明における組成限定理由は以下のとお
りである。 ＳｉＯ2：７５ｗｔ％を越えると難溶となり結晶化コン
トロールが困難となって目的とする結晶化物が得られ
ず、６０ｗｔ％未満では結晶化ガラスの膨張係数が大き
くなる。また、透明性の確保のためには、６３．５〜７
２．０ｗｔ％とする必要がある。 Ａｌ2Ｏ3：３０ｗｔ％を越えると難溶となり膨張係数が
大きくなり、１５ｗｔ％未満では結晶化物の透明性が悪
くなる。また、透明性の確保のためには、１８．０〜２
４．０ｗｔ％とする必要がある。 Ｌｉ2Ｏ：６ｗｔ％を越えると熱処理時に急激な結晶化
が起こり目的とする結晶化ガラスは得られず、２．５ｗ
ｔ％未満では難溶となる。また、透明性の確保のために
は３．０〜５．０ｗｔ％とする必要がある。 ＳｎＯ2：４ｗｔ％を越えると結晶化促進の効果は変わ
らないものの未溶解が生じ、１ｗｔ％未満では難溶にな
るとともに結晶化促進の効果が十分に得られず目的とす
る結晶化ガラスが得られない。 ＺｒＯ2：４ｗｔ％を越えると未溶解が生じ、１ｗｔ％
未満では難溶になるとともに結晶化促進の効果が十分に
得られず結晶粒径が大きくなり透明性が悪くなる。 Ｓ
ｎＯ2＋ＺｒＯ2：７ｗｔ％を越えると未溶解が生じ、
３．５％未満では十分な結晶化促進の効果が得られず目
的とする結晶化ガラスが得られない。必須成分ではない
が、次の成分を添加することができる。 ＴｉＯ2：結晶を微細化させることにより透明性を改善
して光の透過率を上昇させることができる。１ｗｔ％を
越えて加えるとその紫外線吸収性のために紫外域の光の
透過率を減少させる。 Ｎａ2ＯおよびＫ2Ｏ：溶融性を向上させるとともに結晶
化度を減少させ膨張係数を調整することができる。各々
４ｗｔ％を越えて加えると透明性を悪くする。透明性の
良い結晶化ガラスを得るためには、各々３．０ｗｔ％以
下とする必要がある。また、Ｎａ2Ｏ＋Ｋ2Ｏが３ｗｔ％
よりも多い場合には、白濁が増加して透明性が悪くなり
やすく、０．３ｗｔ％より少ないとガラスの溶融が困難
になりやすい。 ＭｇＯ：溶融性を向上させるとともに少量の添加で膨張
係数を大きく増加させる。そのため、過度に加えると膨
張係数が増加したり、結晶化時にクラックが発生したり
するので、２ｗｔ％以下とする必要がある。β−スポジ
ュメン固溶体結晶を主結晶とする本発明に係る結晶化ガ
ラスにおいては、添加しないことが好ましい。 ＺｎＯ：溶融性を向上させるのに有効であるばかりでな
く、結晶化温度を低下させ、結晶粒径を微小化し、透明
性をも向上させる。しかし、過度に添加するとガラス除
冷時に失当を起こしやすく。熱コントロールが困難とな
りやすいので、２ｗｔ％以下とすることが好ましい。特
に、β−スポジュメン固溶体結晶を主結晶とする本発明
に係る結晶化ガラスにおいては、２．０ｗｔ％以下とす
ることが好ましい。 Ｐ2Ｏ5：少量ではＺｒＯ2の溶融に有効であるが、４ｗ
ｔ％を越えると未溶解物を生じる。The reasons for limiting the composition in the present invention are as follows. SiO 2 : When it exceeds 75 wt%, it becomes difficult to dissolve, and it is difficult to control crystallization, and the desired crystallization product cannot be obtained. When it is less than 60 wt%, the expansion coefficient of the crystallized glass becomes large. Moreover, in order to ensure transparency, 63.5 to 7
It should be 2.0 wt%. Al 2 O 3: exceeds 30 wt% becomes hardly soluble expansion coefficient becomes large, the transparency of the crystallized product is deteriorated less than 15 wt%. In order to ensure transparency, 18.0-2
It is necessary to set it to 4.0 wt%. Li 2 O: If it exceeds 6 wt%, abrupt crystallization will occur during heat treatment and the desired crystallized glass will not be obtained.
If it is less than t%, it becomes insoluble. Further, in order to secure transparency, it is necessary to set it to 3.0 to 5.0 wt%. SnO 2 : If it exceeds 4 wt%, the effect of crystallization promotion does not change, but unmelting occurs, and if it is less than 1 wt%, it becomes insoluble and the effect of crystallization promotion is not sufficiently obtained, and the desired crystallized glass is obtained. I can't. ZrO 2: undissolved occurs and exceeds 4 wt%, 1 wt%
If it is less than the above range, it becomes insoluble, and the effect of accelerating crystallization cannot be sufficiently obtained, resulting in a large crystal grain size and poor transparency. S
nO 2 + ZrO 2 : undissolved when exceeding 7 wt%,
If it is less than 3.5%, a sufficient effect of promoting crystallization cannot be obtained and the intended crystallized glass cannot be obtained. Although not an essential component, the following components can be added. TiO 2 : By making the crystal fine, the transparency can be improved and the light transmittance can be increased. When it is added in excess of 1 wt%, the transmittance of light in the ultraviolet region is reduced due to its ultraviolet absorptivity. Na 2 O and K 2 O: It is possible to improve the meltability and reduce the crystallinity to adjust the expansion coefficient. Addition in excess of 4% by weight deteriorates transparency. In order to obtain crystallized glass with good transparency, it is necessary that the content of each be 3.0 wt% or less. Also, Na 2 O + K 2 O is 3 wt%
If it is more than 0.3 wt%, the cloudiness tends to increase and the transparency tends to deteriorate, and if it is less than 0.3 wt%, the melting of the glass tends to be difficult. MgO: Improves meltability and greatly increases expansion coefficient with a small amount of addition. Therefore, if added excessively, the expansion coefficient will increase or cracks will occur during crystallization, so it is necessary to make it 2 wt% or less. In the crystallized glass according to the present invention having a β-spodumene solid solution crystal as a main crystal, it is preferable not to add it. ZnO: Not only effective for improving the meltability, but also lowering the crystallization temperature, reducing the crystal grain size, and improving the transparency. However, if added excessively, it is easy to cause a loss when cooling the glass. Since it is difficult to control heat, it is preferable to set it to 2 wt% or less. In particular, in the crystallized glass according to the present invention having a β-spodumene solid solution crystal as a main crystal, the content is preferably 2.0 wt% or less. P 2 O 5 : A small amount is effective for melting ZrO 2 , but 4w
If it exceeds t%, undissolved matter is produced.
【０００８】なお、この透明結晶化ガラスにＦｅ2Ｏ3、
ＭｎＯ2、Ｖ2Ｏ5、ＮｉＯおよびＣｏＯからなる群より
選択した少なくとも１種の着色剤を含ませることによ
り、着色透明結晶化ガラスとすることができる。着色剤
は、０．０１〜１．０ｗｔ％添加することが好ましい。
０．０１ｗｔ％より少ないと色が薄すぎ、１．０ｗｔ％
よりも多いと色が濃すぎる。また、任意の最終製品の性
質を損なわない範囲で、Ｃｒ2Ｏ3、ＣｅＯ2、Ｎａ2Ｏ3
などの着色剤およびＡｓ2Ｏ3、Ｓｂ2Ｏ3などの清澄剤を
添加することもできる。Fe 2 O 3 was added to this transparent crystallized glass.
A colored transparent crystallized glass can be obtained by including at least one colorant selected from the group consisting of MnO 2 , V 2 O 5 , NiO and CoO. It is preferable to add 0.01 to 1.0 wt% of the colorant.
If it is less than 0.01 wt%, the color is too light, and 1.0 wt%
If it is more than the above, the color is too dark. In addition, Cr 2 O 3 , CeO 2 , Na 2 O 3 may be used as long as the properties of the final product are not impaired.
It is also possible to add colorants such as and fining agents such as As 2 O 3 and Sb 2 O 3 .
【０００９】[0009]
【実施例】表１に示した組成となるように調合した原料
を白金るつぼを用いて１４５０〜１５５０℃で溶融し、
除冷後のガラスを表１に示した条件で熱処理した。得ら
れた透明結晶化ガラスの２．３ｍｍ厚における分光透過
率曲線の短波長側の吸収端、λ（Ｔ）＝０（透過率が０
となる波長）、５０〜１００℃における膨張係数を表１
に併せて示す。各実施例のλ（Ｔ）＝０となる波長は、
３１３ｎｍ以下であった。また、実施例１の結晶化ガラ
スと比較例１の結晶化ガラスの分光透過率を測定した。
結果を図１に示す。図１より、実施例１の結晶化ガラス
は、比較例に示したＴｉＯ2含有結晶化ガラスよりも吸
収端が約６０〜７０ｎｍ短波長側にあり、紫外線透過性
に優れていることがわかる。EXAMPLE A raw material prepared to have the composition shown in Table 1 was melted at 1450 to 1550 ° C. using a platinum crucible,
The glass after cooling was heat-treated under the conditions shown in Table 1. The absorption edge on the short wavelength side of the spectral transmittance curve of the obtained transparent crystallized glass at a thickness of 2.3 mm, λ (T) = 0 (the transmittance is 0
Table 1 shows the expansion coefficient at 50 to 100 ° C.
Are shown together. The wavelength at which λ (T) = 0 in each example is
It was 313 nm or less. Further, the spectral transmittances of the crystallized glass of Example 1 and the crystallized glass of Comparative Example 1 were measured.
The results are shown in FIG. It can be seen from FIG. 1 that the crystallized glass of Example 1 has an absorption edge on the short wavelength side of about 60 to 70 nm and is superior in ultraviolet light transmittance to the TiO 2 -containing crystallized glass shown in Comparative Example.
【００１０】[0010]
【表１】 [Table 1]
【００１１】[0011]
【発明の効果】本発明に係る透明結晶化ガラスは、低膨
張と優れた紫外域周辺の優れた短波長光透過性を有し、
ＩＣフォトマスク、精密光学材料などとして好適に使用
できる。The transparent crystallized glass according to the present invention has a low expansion and an excellent short-wavelength light transmittance around the ultraviolet region,
It can be suitably used as an IC photomask, a precision optical material and the like.
【図１】実施例１および比較例１の分光透過率を示す図
である。FIG. 1 is a diagram showing the spectral transmittances of Example 1 and Comparative Example 1.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中垣 茂樹 大阪府大阪市東区道修町４丁目８番地 日 本板硝子株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeki Nakagaki 4-8 Doshomachi, Higashi-ku, Osaka-shi, Osaka Inside Nippon Sheet Glass Co., Ltd.
Claims (1)
し、２．３ｍｍ厚における分光透過率曲線の短波長側の
吸収端が３１３ｎｍ以下であることを特徴とする透明結
晶化ガラス。1. Li 2 O 3.0-5.0 Na 2 O 0-3.0 K 2 O 0-3.0 Na 2 O + K 2 O 0.3-3.0 MgO 0-2 in% by weight. 0.0 ZnO 0-2.0 Al 2 O 3 18.0-24.0 SiO 2 63.5-72.0 SnO 2 1.0-4.0 TiO 2 0-1 ZrO 2 1.0-4. 0 TiO 2 + ZrO 2 3.5-7.0 P 2 O 5 0-4.0 with β-quartz solid solution crystals as the main crystal phase and a short wavelength of the spectral transmittance curve at a thickness of 2.3 mm. A transparent crystallized glass having an absorption edge on the side of 313 nm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25798196A JPH09169542A (en) | 1987-01-19 | 1996-09-30 | Transparent crystallized glass |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP970187 | 1987-01-19 | ||
| JP62-9701 | 1987-01-19 | ||
| JP25798196A JPH09169542A (en) | 1987-01-19 | 1996-09-30 | Transparent crystallized glass |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63008844A Division JP2668075B2 (en) | 1987-01-19 | 1988-01-19 | Transparent crystallized glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09169542A true JPH09169542A (en) | 1997-06-30 |
Family
ID=26344469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25798196A Pending JPH09169542A (en) | 1987-01-19 | 1996-09-30 | Transparent crystallized glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09169542A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000073225A1 (en) * | 1999-05-28 | 2000-12-07 | Nippon Electric Glass Co., Ltd. | Li2O-Al2O3-SiO2 TYPE TRANSPARENT CRYSTALIZED GLASS AND CRYSTALLINE GLASS |
| DE19939787A1 (en) * | 1999-08-21 | 2001-02-22 | Schott Glas | Transparent glass ceramic colored using vanadium oxide additive has a crystal phase made of high quartz content mixed crystals and a specified light transmission |
| JP2001342038A (en) * | 2000-03-29 | 2001-12-11 | Nippon Electric Glass Co Ltd | Crystallized glass |
| JP2002098817A (en) * | 2000-09-21 | 2002-04-05 | Nippon Electric Glass Co Ltd | Reflecting mirror |
| JP2002154841A (en) * | 2000-07-07 | 2002-05-28 | Ohara Inc | Low expansion transparent crystallized glass, crystallized glass substrate and optical waveguide element |
| WO2003004429A1 (en) * | 2001-07-04 | 2003-01-16 | Nippon Electric Glass Co., Ltd. | Glass-ceramics |
| US6930289B2 (en) | 2000-08-24 | 2005-08-16 | Schott Glas | Cooking stove and method for production and components thereof |
| JP2007145691A (en) * | 2005-10-25 | 2007-06-14 | Ohara Inc | Crystallized glass and method of manufacturing crystallized glass |
| JP2007326722A (en) * | 2006-06-06 | 2007-12-20 | Ohara Inc | Crystallized glass and method for producing the same |
| JP2008260669A (en) * | 2007-04-13 | 2008-10-30 | Nippon Electric Glass Co Ltd | Crystallized glass powder and uv curing type resin cured material |
| KR101450930B1 (en) * | 2006-11-30 | 2014-10-15 | 유로케라 | Transparent, colorless titania-free beta-quartz glass-ceramic |
| KR101476862B1 (en) * | 2006-11-30 | 2014-12-26 | 유로케라 | Transparent colorless low-titania beta-quartz glass-ceramic material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4910134A (en) * | 1972-05-30 | 1974-01-29 | ||
| JPS52117311A (en) * | 1976-03-25 | 1977-10-01 | Corning Glass Works | Transparent betaasilica glass ceramic products* and process for preparing the same |
| JPS59116150A (en) * | 1982-12-20 | 1984-07-04 | コ−ニング・グラス・ワ−クス | Glass-ceramic particularly good for stove window and manufacture |
-
1996
- 1996-09-30 JP JP25798196A patent/JPH09169542A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4910134A (en) * | 1972-05-30 | 1974-01-29 | ||
| JPS52117311A (en) * | 1976-03-25 | 1977-10-01 | Corning Glass Works | Transparent betaasilica glass ceramic products* and process for preparing the same |
| JPS59116150A (en) * | 1982-12-20 | 1984-07-04 | コ−ニング・グラス・ワ−クス | Glass-ceramic particularly good for stove window and manufacture |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6593258B1 (en) | 1999-05-28 | 2003-07-15 | Nippon Electric Glass Co., Ltd. | Li2O-Al2O3-SiO2 transparent crystallized glass and crystallizable |
| WO2000073225A1 (en) * | 1999-05-28 | 2000-12-07 | Nippon Electric Glass Co., Ltd. | Li2O-Al2O3-SiO2 TYPE TRANSPARENT CRYSTALIZED GLASS AND CRYSTALLINE GLASS |
| DE19939787A1 (en) * | 1999-08-21 | 2001-02-22 | Schott Glas | Transparent glass ceramic colored using vanadium oxide additive has a crystal phase made of high quartz content mixed crystals and a specified light transmission |
| DE19939787C2 (en) * | 1999-08-21 | 2003-11-27 | Schott Glas | Transparent glass-ceramic, which can be colored dark with the addition of vanadium oxide, with high-quartz mixed crystals as the predominant crystal phase, process for their production and their use |
| JP2001342038A (en) * | 2000-03-29 | 2001-12-11 | Nippon Electric Glass Co Ltd | Crystallized glass |
| JP2002154841A (en) * | 2000-07-07 | 2002-05-28 | Ohara Inc | Low expansion transparent crystallized glass, crystallized glass substrate and optical waveguide element |
| JP4704585B2 (en) * | 2000-07-07 | 2011-06-15 | 株式会社オハラ | Low expansion transparent crystallized glass, crystallized glass substrate and optical waveguide device |
| US6930289B2 (en) | 2000-08-24 | 2005-08-16 | Schott Glas | Cooking stove and method for production and components thereof |
| EP2088130A1 (en) | 2000-08-24 | 2009-08-12 | Schott AG | Transparent glass ceramic darkened with vanadium oxide |
| JP2002098817A (en) * | 2000-09-21 | 2002-04-05 | Nippon Electric Glass Co Ltd | Reflecting mirror |
| JP2003020254A (en) * | 2001-07-04 | 2003-01-24 | National Institute Of Advanced Industrial & Technology | Crystallized glass |
| WO2003004429A1 (en) * | 2001-07-04 | 2003-01-16 | Nippon Electric Glass Co., Ltd. | Glass-ceramics |
| JP2007145691A (en) * | 2005-10-25 | 2007-06-14 | Ohara Inc | Crystallized glass and method of manufacturing crystallized glass |
| JP2007326722A (en) * | 2006-06-06 | 2007-12-20 | Ohara Inc | Crystallized glass and method for producing the same |
| US8043985B2 (en) * | 2006-06-06 | 2011-10-25 | Ohara Inc. | Crystallized glass, and method for producing crystallized glass |
| KR101450930B1 (en) * | 2006-11-30 | 2014-10-15 | 유로케라 | Transparent, colorless titania-free beta-quartz glass-ceramic |
| KR101476862B1 (en) * | 2006-11-30 | 2014-12-26 | 유로케라 | Transparent colorless low-titania beta-quartz glass-ceramic material |
| JP2008260669A (en) * | 2007-04-13 | 2008-10-30 | Nippon Electric Glass Co Ltd | Crystallized glass powder and uv curing type resin cured material |
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