JPS5851901B2 - infrared transparent glass - Google Patents
infrared transparent glassInfo
- Publication number
- JPS5851901B2 JPS5851901B2 JP13132078A JP13132078A JPS5851901B2 JP S5851901 B2 JPS5851901 B2 JP S5851901B2 JP 13132078 A JP13132078 A JP 13132078A JP 13132078 A JP13132078 A JP 13132078A JP S5851901 B2 JPS5851901 B2 JP S5851901B2
- Authority
- JP
- Japan
- Prior art keywords
- total amount
- glass
- transparent glass
- infrared transparent
- infrared
- 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.)
- Expired
Links
- 239000011521 glass Substances 0.000 title claims description 17
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 3
- 229910019695 Nb2O6 Inorganic materials 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 4
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- GOLCXWYRSKYTSP-UHFFFAOYSA-N Arsenious Acid Chemical compound O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 2
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 2
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910019704 Nb2O Inorganic materials 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
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000011978 dissolution method Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007572 expansion measurement Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910001845 yogo sapphire 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
- C03C3/12—Silica-free oxide glass compositions
- C03C3/253—Silica-free oxide glass compositions containing germanium
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
【発明の詳細な説明】 本発明はゲルマネート赤外透過ガラスに関する。[Detailed description of the invention] The present invention relates to germanate infrared transmitting glasses.
赤外線レーダ、赤外線誘導ミサイルの赤外探知器用の窓
材に要求される特性には、可視域から赤外域に渡って高
い光透過率を有すること以外に、耐熱性が大きいこと、
熱衝撃に強いこと、空中の塵の衝突などの機械的衝撃に
強いこと、湿気に浸されないことなどが上げられ、高い
軟化点、小さい膨張係数、大きい硬度、秀れた化学的耐
久性を持つ赤外透過ガラスが望まれている。Characteristics required for window materials for infrared detectors of infrared radars and infrared guided missiles include high light transmittance from the visible to infrared range, as well as high heat resistance.
It is resistant to thermal shock, mechanical shock such as impact from airborne dust, and is not immersed in moisture. It has a high softening point, small coefficient of expansion, high hardness, and excellent chemical durability. Infrared transparent glass is desired.
従来、ＧｅＯ２系赤外透過ガラスとしては、Ｇｅｍ２−
ＰｂＯ系（Ｇｌａｓｓ Ｉｎｄ−、１９６３）第２３頁
）、Ｇｅ ０２ Ｔ １０２ Ｂ ａ Ｏ系（特公
昭４２−６５５号）、ＧｅｍＧｅｍ２−Ａ１２０３−Ｃ
ａＯ−Ｒ系（特公昭４７−４０８４５号）、Ｇｅ０２−
Ａ１２０３５中
などが公知であるが、後述するように、上記の要求され
る特性のいずれかに難点がある。Conventionally, as GeO2-based infrared transmitting glass, Gem2-
PbO system (Glass Ind-, 1963, p. 23), Ge 02 T 102 B a O system (Special Publication No. 42-655), GemGem2-A1203-C
aO-R system (Special Publication No. 47-40845), Ge02-
A12035 and the like are known, but as will be described later, there are drawbacks in any of the above required characteristics.
本発明はかかる点に鑑み重量％で、ＧｅＯ２２５〜４５
、 Ａ１２０３５〜２０ 、 Ｔａ２０５１０〜５０
゜Ｂａ０１０〜３５を必須成分とし、アルカリ金属酸化
物Ｏ〜８、ＳｒＯ，ＣａＯ，ＭｇＯ，ＺｎＯ，ＰｂＯの
合量Ｏ〜１０、Ｌａ ２０３ 、Ｚ ｒ０２２ Ｔ ｉ
０２ ）Ｎｂ２０５ 、 ＷＯ３、Ｓｂ２０３ 、 Ａ
ｓ２０３の合量Ｏ〜１８を添加して成るもので、高い軟
化点、小さい膨張係数、大きい硬度及び秀れた化学的耐
久性を持つ赤外透過ガラスを提供するものである。In view of this point, the present invention provides GeO225 to 45% by weight.
, A12035-20, Ta20510-50
゜ Ba010~35 is an essential component, alkali metal oxide O~8, total amount of SrO, CaO, MgO, ZnO, PbO O~10, La 203 , Z r022 Ti
02) Nb205, WO3, Sb203, A
S203 is added in a total amount of 0 to 18 to provide an infrared transmitting glass having a high softening point, a small coefficient of expansion, high hardness, and excellent chemical durability.
ここに、ＧｅＯ２及びＢａＯはそれぞれ２５〜４５％及
び１０〜３５％を外れると、安定なガラスが得られず、
Ａｌ２Ｏ３及びＴ ａ ２０５はそれぞれ５％及び１０
％以下では強い失透傾向を示し、またそれぞれ２０％及
び５０％以上では溶融温度が高くなり過ぎる。Here, if GeO2 and BaO are out of 25-45% and 10-35%, respectively, stable glass cannot be obtained,
Al2O3 and T a 205 are 5% and 10 respectively
% or less shows a strong tendency to devitrify, and if it is 20% or more and 50% or more, the melting temperature becomes too high.
またアルカリ金属酸化物は軟化点を低下し、膨張係数を
増大させ、硬度を低下させ、かつ化学的耐久性を劣化さ
せるが、安定性及び溶融性の改善の為に８％以下で使用
できる。Although alkali metal oxides lower the softening point, increase the expansion coefficient, lower hardness, and degrade chemical durability, they can be used in amounts of 8% or less to improve stability and meltability.
そしてＭｇＯｔ Ｃａ Ｏ、Ｓ ｒ Ｏｔ Ｚ ｎ Ｏ
ｔ Ｐ ｂ Ｏは主として光学恒数の調整のため、Ｂａ
Ｏとの置換で含量で１０％まで添加できるが、これを越
えるとガラスが不安定になる。and MgOtCaO, SrOtZnO
tPbO is mainly used for adjusting optical constants, so Ba
It can be added up to 10% by substitution with O, but if it exceeds this, the glass becomes unstable.
またＬａ２Ｏ３、ＺｒＯ２，ＴｉＯ２゜Ｎｂ２０． 、
ＷＯ３、Ｓｂ２０３． Ａｓ２Ｏ３は主として原料コ
ストの低減及び光学恒数の調整のために使用するが、合
量が１８％を越えると、ガラスが不安定になり、特にＴ
ｉＯ２，ＷＯ３，Ｎｂ２Ｏ，では紫外部の吸収が増大し
てよくない。Also, La2O3, ZrO2, TiO2°Nb20. ,
WO3, Sb203. As2O3 is mainly used to reduce raw material costs and adjust optical constants, but if the total amount exceeds 18%, the glass becomes unstable, especially T
iO2, WO3, and Nb2O increase absorption in the ultraviolet region, which is not good.
次に、従来公知のガラスと本発明ガラスの実施例とを表
に比較して重量％で示す。Next, conventionally known glasses and Examples of the glasses of the present invention are compared in a table and are shown in weight %.
表中、軟化点は熱膨張測定における屈伏点であり、膨張
係数は＋１００〜＋３００℃の平均線膨張係数（ｄｅｇ
−りを意味し、また耐水性は研磨した試料を蒸溜水に浸
漬し、室温で保持した時、試料表面に褐色の干渉色が現
れるのに要する時間で示しである。In the table, the softening point is the yield point in thermal expansion measurement, and the expansion coefficient is the average linear expansion coefficient (deg
Water resistance is measured by the time required for a brown interference color to appear on the surface of a polished sample when it is immersed in distilled water and kept at room temperature.
／１６１はＣ１ａｓｓ Ｉｎｄ、、 １９６３ 、第２
３頁記載のガラスで、軟化点、膨張係数、ヌープ硬さに
難点があり、／１６２は特公昭４２−６５５号公報記載
のガラスで、膨張係数、ヌープ硬さ、耐水性に難点があ
り、／Ｉ６３は特公昭４７−４０８４５号公報記載のガ
ラスで、膨張係数、耐水性に難点があり、／Ｉ６４は米
国特許第３５３１３０５号明細書記載のガラスで、耐水
性に難点がある。/161 is C1ass Ind, 1963, 2nd
The glass described on page 3 has drawbacks in softening point, expansion coefficient, and Knoop hardness, and /162 is the glass described in Japanese Patent Publication No. 42-655 and has drawbacks in expansion coefficient, Knoop hardness, and water resistance. /I63 is a glass described in Japanese Patent Publication No. 47-40845, which has problems with its expansion coefficient and water resistance, and /I64 is a glass described in US Pat. No. 3,531,305, which has problems with water resistance.
そしてＡ５〜／１６９は本発明の実施例で、上記の難点
が改善されていることを示している。And A5~/169 is an example of the present invention, which shows that the above-mentioned drawbacks have been improved.
次に、実施例Ａ５を下表の原料組成で秤量し、電気炉で
Ｐｉ−Ｒｈ坩堝を使用して１５５０℃、１時間で溶融し
、鉄板上に鋳込んで適当な温度で徐冷したガラスの光透
過率を図に示す。Next, Example A5 was weighed with the raw material composition shown in the table below, melted in an electric furnace at 1550°C for 1 hour using a Pi-Rh crucible, poured onto an iron plate, and slowly cooled at an appropriate temperature. The light transmittance of is shown in the figure.
ただし試料の肉厚は２．０ｍｍである。However, the wall thickness of the sample is 2.0 mm.
重量％
酸化ゲルマニウム ３０．０
酸化アルミニウム １０．０
五酸化タンタル ４０．０
酸化バリウム ２０．０
合 計 １００．０
上表では、３〜５μにおける水又は水酸基による吸収を
減少させる目的でＡｌ１２０３の一部をＡＩＦ、にした
が、同様の目的で塩化物の使用、乾燥ガスの吹付は等の
公知の技術を応用することも有効である。Weight % Germanium oxide 30.0 Aluminum oxide 10.0 Tantalum pentoxide 40.0 Barium oxide 20.0 Total 100.0 In the above table, a portion of Al1203 is added for the purpose of reducing absorption by water or hydroxyl groups at 3 to 5μ. Although AIF was used for the same purpose, it is also effective to apply known techniques such as the use of chloride and the spraying of dry gas.
原料名称 重量（ｇ）
酸化ゲルマニウム ３０．０
酸化アルミニウム ５．０
弗化アルミニウム ８．２
五酸化タンタル ４０．Ｏ
硝酸バリウム ３４．１
１１７．３
実施例！６〜９も同様な溶解方法により同様な光透過率
を示した。Raw material name Weight (g) Germanium oxide 30.0 Aluminum oxide 5.0 Aluminum fluoride 8.2 Tantalum pentoxide 40. O Barium nitrate 34.1 117.3 Example! Samples 6 to 9 also showed similar light transmittances using the same dissolution method.
図は本発明実施例Ａ５のガラスの透過率曲線を示す。 The figure shows the transmittance curve of the glass of Example A5 of the present invention.
Claims (1)
０、 Ｔａ２０５１０〜５ Ｌ二価金属酸化物の合量１
０〜３５、ただしＢａＯ１０〜３５、またＭｇＯ。 ＣａＯ，ＳｒＯ，ＺｎＯ，ＰｂＯの合量Ｏ〜１０、アル
カリ金属酸化物の合量Ｏ〜８、Ｌｓ２０３．ＺｒＯ２゜
ＴｉＯ２，Ｎｂ２Ｏ６，ＷＯ３，５ｂ２０３．Ａｓ２Ｏ
３の合量Ｏ〜１８からなる赤外透過ガラス。[Claims] 1 Weight arm, GeO225-45. A12035-2
0, Ta20510-5 L total amount of divalent metal oxides 1
0-35, but BaO 10-35, also MgO. Total amount of CaO, SrO, ZnO, PbO: O~10, total amount of alkali metal oxide: O~8, Ls203. ZrO2゜TiO2, Nb2O6, WO3, 5b203. As2O
Infrared transmitting glass consisting of a total amount of 3 to 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13132078A JPS5851901B2 (en) | 1978-10-25 | 1978-10-25 | infrared transparent glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13132078A JPS5851901B2 (en) | 1978-10-25 | 1978-10-25 | infrared transparent glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5560041A JPS5560041A (en) | 1980-05-06 |
| JPS5851901B2 true JPS5851901B2 (en) | 1983-11-18 |
Family
ID=15055187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13132078A Expired JPS5851901B2 (en) | 1978-10-25 | 1978-10-25 | infrared transparent glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5851901B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59163402U (en) * | 1983-04-20 | 1984-11-01 | トキコ株式会社 | tube cutting machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2499546B1 (en) * | 1981-02-11 | 1986-10-24 | Corning Glass Works | GERMANIUM GLASSES WITH HIGH TRANSMISSION IN INFRA-RED AND LOW DENSITY, AND THEIR MANUFACTURE |
-
1978
- 1978-10-25 JP JP13132078A patent/JPS5851901B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59163402U (en) * | 1983-04-20 | 1984-11-01 | トキコ株式会社 | tube cutting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5560041A (en) | 1980-05-06 |
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