JPH01246110A - Production of compound oxide - Google Patents
Production of compound oxideInfo
- Publication number
- JPH01246110A JPH01246110A JP7207588A JP7207588A JPH01246110A JP H01246110 A JPH01246110 A JP H01246110A JP 7207588 A JP7207588 A JP 7207588A JP 7207588 A JP7207588 A JP 7207588A JP H01246110 A JPH01246110 A JP H01246110A
- Authority
- JP
- Japan
- Prior art keywords
- water
- ethylenediaminetetraacetic acid
- solution
- gel
- composite oxide
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 150000001875 compounds Chemical class 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 238000001704 evaporation Methods 0.000 claims abstract description 10
- 239000012456 homogeneous solution Substances 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims description 14
- -1 ethylenediaminetetraacetic acid compound Chemical class 0.000 claims description 10
- 238000010304 firing Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 229910052788 barium Inorganic materials 0.000 abstract description 8
- 238000001354 calcination Methods 0.000 abstract description 7
- 229910052802 copper Inorganic materials 0.000 abstract description 7
- 229910052727 yttrium Inorganic materials 0.000 abstract description 7
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical class OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract description 5
- 239000011882 ultra-fine particle Substances 0.000 abstract description 2
- 239000012213 gelatinous substance Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 10
- 239000010949 copper Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002887 superconductor Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 3
- 229910002113 barium titanate Inorganic materials 0.000 description 3
- 238000000975 co-precipitation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000003746 solid phase reaction Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010532 solid phase synthesis reaction Methods 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野〕
本発明は、複合酸化物の製造方法に関し、特に酸化物系
超電導材料を得るのに適する複合酸化物の製造方法に関
する。また、本発明はエレクトロニクス分野において用
いられる機能性材料となる複合酸化物を製造する方法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a composite oxide, and particularly to a method for producing a composite oxide suitable for obtaining an oxide-based superconducting material. The present invention also relates to a method for producing a composite oxide that is a functional material used in the electronics field.
［従来の技術］
超電導材料、例えばＹ Ｂ ａ ２ Ｃｕ ３０□−８
焼結体は、従来Ｙ Ｏ、ＢａＣＯ３，ＣｕＯの粉体を
乳鉢により粉砕・混合し、高温焼成してそれらの固相反
応により製造されている。[Prior art] Superconducting material, for example Y Ba 2 Cu 30□-8
Sintered bodies are conventionally produced by pulverizing and mixing powders of Y 2 O, BaCO 3 , and CuO in a mortar, firing them at high temperatures, and subjecting them to a solid phase reaction.
また、組成の均一性、微粒子化を目的として、例えばイ
ツトリウムとバリウムと銅の塩を溶解した溶液のｐＨを
調整することによりシュウ酸塩として同時に沈殿を形成
させるような湿式共沈法により微粒子の金属塩を得、こ
れを焼成して複合酸化物を製造することが知られている
。In addition, for the purpose of uniformity of composition and formation of fine particles, a wet co-precipitation method is used to form fine particles at the same time as oxalate by adjusting the pH of a solution in which yttrium, barium, and copper salts are dissolved. It is known to obtain a metal salt and sinter it to produce a composite oxide.
［発明が解決しようとする問題点］
しかしながら、従来の各成分の粉末から出発し固相反応
による方法は、出発原料粉末の超微細化が困難であるた
め、組成の均一性、組織の緻密化、微細化に問題を有し
、かつ均一相を得るためには仮焼−粉砕をくり返す必要
があり、超電導特性が劣化する傾向にある。[Problems to be Solved by the Invention] However, in the conventional method starting from powders of each component and using solid phase reaction, it is difficult to make the starting raw material powder ultra-fine, so it is difficult to achieve uniformity of composition and densification of structure. However, there is a problem in miniaturization, and in order to obtain a uniform phase, it is necessary to repeat calcining and pulverization, and the superconducting properties tend to deteriorate.
また、シュウ酸塩とする湿式共沈法においても、イツト
リウム、バリウム、銅の各成分が沈殿を形成するさいの
ｐＨ値の差異により、収率の低下、組成のずれなどの問
題を生じ、上記の混合固相法と比較すると微細化された
組織の原料粉末が得られるが、超電導特性、特に臨界電
流密度Ｊｃに与える効果は少なく、多くの問題を残して
いる。In addition, in the wet co-precipitation method for oxalate, problems such as a decrease in yield and deviation in composition occur due to differences in pH values when the components of yttrium, barium, and copper form precipitates. Although a raw material powder with a finer structure can be obtained compared to the mixed solid phase method, it has little effect on superconducting properties, especially the critical current density Jc, and many problems remain.
［問題点を解決するだめの手段］
本発明は、上記のような問題点を解決するために研究を
行ない、ゾル−ゲル法で生成される超微粒子に着目し、
金属元素のエチレンジアミン四酢酸化合物を用いると、
それから水分を蒸発させることによりゲル状物質が生成
することに着目し、それを焼成すると低温での焼成によ
り超微粒子の複合酸化物を製造することができることを
見い出し、本発明を完成させた。[Means to Solve the Problems] The present invention has conducted research to solve the above problems, and focused on ultrafine particles produced by the sol-gel method.
When using the metallic element ethylenediaminetetraacetic acid compound,
Then, they focused on the fact that a gel-like substance is produced by evaporating water, and found that by firing it at a low temperature, it was possible to produce an ultrafine composite oxide, thereby completing the present invention.
すなわち、本発明は、１種又は２種以上の金属元素のエ
チレンジアミン四酢酸化合物を水に溶解して均一溶液と
し“、水を蒸発させてゲル状物質を得た後、それを焼成
することからなる複合酸化物の製造方法である。That is, the present invention involves dissolving an ethylenediaminetetraacetic acid compound of one or more metal elements in water to form a homogeneous solution, evaporating the water to obtain a gel-like substance, and then firing it. This is a method for producing a composite oxide.
本発明で用いる金属元素のエチレンジアミン四酢酸化合
物としてはイツトリウム、バリウム、銅、アルミニウム
、チタン、ジルコニウム、ビスマス、カルシウム、スト
ロンチウム、鉄、コバルト、ニッケル、亜鉛、ランタン
などのエチレンジアミン四酢酸化合物が用いられる。超
電導体を製造する場合にはイツトリウム、バリウム、銅
の、又はカルシウム、ストロンチウム、ビスマス、銅の
、又はランタン、バリウム、銅のエチレンジアミン四酢
酸化合物が好ましい。チタン酸バリウムのアクチュエー
ターを製造する場合はエチレンジアミンテトラアセタト
バリウム酸チタンが好ましい。Ethylenediaminetetraacetic acid compounds of metal elements used in the present invention include yttrium, barium, copper, aluminum, titanium, zirconium, bismuth, calcium, strontium, iron, cobalt, nickel, zinc, lanthanum, and the like. For producing superconductors, ethylenediaminetetraacetic acid compounds of yttrium, barium, copper, or of calcium, strontium, bismuth, copper, or of lanthanum, barium, copper are preferred. When producing barium titanate actuators, titanium ethylenediaminetetraacetatobarate is preferred.
金属元素のエチレンジアミン四酢酸化合物水溶液からの
水の蒸発により得たゲル状物質を焼成する温度は、エチ
レンジアミン四酢酸化合物の種類によっても異なり、５
００〜１３００℃の範囲が用いられるが、イツトリウム
、バリウム、銅の各エチレンジアミン四酢酸化合物の混
合水溶液から得られたゲル状物質を焼成する温度は８０
０℃付近の温度が用いられる。The temperature at which the gel-like material obtained by evaporating water from an aqueous solution of an ethylenediaminetetraacetic acid compound of a metal element is fired varies depending on the type of ethylenediaminetetraacetic acid compound, and is
The range of 00 to 1300°C is used, but the temperature at which the gel-like material obtained from the mixed aqueous solution of each ethylenediaminetetraacetic acid compound of yttrium, barium, and copper is fired is 80°C.
Temperatures around 0°C are used.
金属元素のエチレンジアミン四酢酸化合物の水溶液にお
ける濃度としては、均一溶液を形成するためにも前記化
合物の飽和溶解度以下でなければならないが、水を蒸発
させる関係上なるべく高い方が好ましい。The concentration of the ethylenediaminetetraacetic acid compound of the metal element in the aqueous solution must be below the saturation solubility of the compound in order to form a homogeneous solution, but it is preferably as high as possible in order to evaporate water.
前記の均一溶液を基板上に塗布、スプレーなどによりコ
ーティングなどをし、水を蒸発させてゲル状物質の膜と
し、それを焼成させることにより薄膜あるいは厚膜を得
ることができる。この方法は、特に、優れた超電導特性
を有する超電導体の薄膜あるいは厚膜を得るのに適して
いる。A thin or thick film can be obtained by applying or spraying the uniform solution on a substrate, evaporating water to form a film of gel-like material, and baking the film. This method is particularly suitable for obtaining thin or thick films of superconductors with excellent superconducting properties.
さらに、この複合酸化物の製造方法は、超電導材料以外
の他の機能性、構造用セラミックスの製造にも有効であ
る。Furthermore, this method for producing composite oxides is also effective for producing functional and structural ceramics other than superconducting materials.
［作 用］
１種又は２種以上の金属元素のエチレンジアミン四酢酸
化合物を水に溶解して均一溶液とし、水を蒸発させて得
たゲル状物質では、２種以上の金属元素が均一に分散し
ている。このためこのゲル状物質を焼成すると均質な複
合酸化物が得られる。しかも、その焼成においては低温
での焼成により複合酸化物が容易に得られる。[Function] In a gel-like substance obtained by dissolving an ethylenediaminetetraacetic acid compound of one or more metal elements in water to make a homogeneous solution and then evaporating the water, two or more metal elements are uniformly dispersed. are doing. Therefore, when this gel-like substance is fired, a homogeneous composite oxide can be obtained. Furthermore, the composite oxide can be easily obtained by firing at a low temperature.
超電導材料を作る場合における固相反応による方法では
均一相を得るためには仮焼−粉砕を繰り返す必要がある
が、本発明ではゲル状物質において金属元素が均一に分
散していることにより仮焼−粉砕を繰り返す必要がない
。When producing superconducting materials, solid phase reaction methods require repeated calcination and pulverization to obtain a homogeneous phase, but in the present invention, the calcination and pulverization processes are repeated because the metal elements are uniformly dispersed in the gel-like material. - No need for repeated crushing.
［実 施 例］
以下、本発明を実施例により更に具体的に説明するが、
本発明はその要旨を超えない限り、以下の実施例に限定
されるものではない。[Example] Hereinafter, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited to the following examples unless it exceeds the gist thereof.
実施例 １
エチレンジアミンテトラアセタト
イツトリウム酸アンモニウム ０，０１モルエチレン
ジアミンテトラアセクト
バリウム酸アンモニウム 、 ０．０２モルエチレ
ンジアミンテトラアセタト銅酸口、０３モルを秤量し、
ビーカーに入れｌｏｏｍｌの水で溶解して均一な溶液と
する。その溶液を熱風乾燥機（８０’Ｃ）中に入れ、１
日程度水を蒸発させるとゲル状物質が得られる。それを
ビーカーより取り出し、アルミナボートに乗せ、酸素を
１Ω／分流しながら８５０℃で８時間仮焼すると、イツ
トリウム、バリウム及び銅の複合酸化物からなる超微粉
末５．７ｇが得られた。その粉末を３０００ｋｇ／ｃ♂
で加圧成形し、この成形体を酸素１Ω／分流しながら９
５０℃で１０時間本焼成し、超電導体を得た。このもの
はＹＢａ２Ｃｕ３０□１斜方晶の組成を有する。Example 1 Ammonium ethylenediaminetetraacetatoitrate 0.01 mol Ammonium ethylenediaminetetraacetobarate, 0.02 mol ethylenediaminetetraacetate cuprate, 0.03 mol were weighed,
Put it in a beaker and dissolve it with room ml of water to make a homogeneous solution. Put the solution in a hot air dryer (80'C) and
A gel-like substance is obtained by evaporating the water for about a day. It was taken out from the beaker, placed on an alumina boat, and calcined at 850° C. for 8 hours while flowing oxygen at 1Ω/minute to obtain 5.7 g of ultrafine powder consisting of a composite oxide of yttrium, barium, and copper. 3000kg/c♂ of the powder
Pressure molded with
Main firing was performed at 50° C. for 10 hours to obtain a superconductor. This material has a YBa2Cu30□1 orthorhombic composition.
実施例 ２
エチレンジアミンテトラアセタトバリウム酸チタン０．
１モルを秤量し、ビーカーに入れ、５０ｍ１の水で溶解
して均一な溶液とする。その溶液を熱風乾燥機（８０℃
）中に入れ、１日程度水を蒸発させるとゲル状物質が得
られる。それをビーカーより取り出１７、アルミナボー
トに乗せ、酸素を１．１１１７分流しながら９００℃で
２時間仮焼すると、チタン酸バリウムの粉末２３．２．
が得られた。その粉末を３０００ｋｇ／ｃ−で加圧成形
し、この成形体を酸素１ｊ２／分流しながら１３００℃
で１時間本焼成をし、チタン酸バリウム誘電体を得る。Example 2 Titanium ethylenediaminetetraacetatobarate 0.
Weigh out 1 mole, put it in a beaker, and dissolve it in 50 ml of water to make a homogeneous solution. The solution was dried in a hot air dryer (80°C).
) and evaporate the water for about a day to obtain a gel-like substance. It was taken out from the beaker 17, placed on an alumina boat, and calcined at 900°C for 2 hours while oxygen was flowing in 1.1117 parts, resulting in barium titanate powder 23.2.
was gotten. The powder was pressure molded at 3000 kg/c-, and the molded body was heated to 1300°C while oxygen 1j2/split flow.
Main firing was performed for 1 hour to obtain a barium titanate dielectric material.
〔発明の効果コ
本発明によれば、１種又は２種以上の金属元素のエチレ
ンジアミン四酢酸化合物を水に溶解して均一溶液とし、
水を蒸発させて得るゲル状物質は、金属元素が均一に分
散しているために、焼成により均質な複合酸化物が得ら
れ、かつその焼成を低温度で行うことができ、超微粉末
が得られる。さらに、その粉末を成形し、本焼成するさ
いの焼成温度も比較的低くてよい。[Effects of the Invention] According to the present invention, an ethylenediaminetetraacetic acid compound of one or more metal elements is dissolved in water to form a homogeneous solution,
In the gel-like substance obtained by evaporating water, metal elements are uniformly dispersed, so a homogeneous composite oxide can be obtained by calcination, and the calcination can be performed at a low temperature, resulting in ultrafine powder. can get. Furthermore, when the powder is molded and the main firing is performed, the firing temperature may be relatively low.
例えば、超電導材料Ｙ −Ｂ ａ−Ｃｕ−０系において
８５０℃という低温焼成でもＹ Ｂ ａ ２ Ｃｕ ａ
０７−。For example, in the superconducting material Y-Ba-Cu-0, even when fired at a low temperature of 850°C, YBa 2 Cu a
07-.
斜方晶の組成が得られ、また従来の固相法、湿式共沈法
のような組成のずれ、収率の低下がないことが確認され
た。この複合酸化物の製造方法により従来のＹＢａ２Ｃ
ｕ３Ｏ７□超電導焼成体の欠点であった低い臨界電流密
度Ｊｃの大幅な向上が得られる。It was confirmed that an orthorhombic composition was obtained and that there was no deviation in composition or decrease in yield as in conventional solid phase methods and wet coprecipitation methods. By this method of manufacturing composite oxide, conventional YBa2C
The low critical current density Jc, which was a drawback of the u3O7□ superconducting fired body, can be significantly improved.
また、１種又は２種以」二の金属元素のエチレンジアミ
ン四酢酸化合物を水に溶解した均一溶液を基板へコーテ
ィングなどし、水を蒸発させてゲル状物質とし、焼成す
ることにより優れた超電導特性を有する超電導体の薄膜
あるいは厚膜を得ることが可能である。In addition, excellent superconducting properties can be achieved by coating a substrate with a homogeneous solution of ethylenediaminetetraacetic acid compound of one or more metal elements dissolved in water, evaporating the water to form a gel-like substance, and baking it. It is possible to obtain thin or thick films of superconductors having .
さらに、この複合酸化物の製造方法は、超電導材料以外
の他の機能性、構造用セラミックスの製造に有効である
ことは言うまでもない。Furthermore, it goes without saying that this method for producing a composite oxide is effective for producing other functional and structural ceramics other than superconducting materials.
Claims (1)
化合物を水に溶解して均一溶液とし、水を蒸発させてゲ
ル状物質を得た後、それを焼成することからなる複合酸
化物の製造方法。A method for producing a composite oxide, which comprises dissolving an ethylenediaminetetraacetic acid compound of one or more metal elements in water to make a homogeneous solution, evaporating the water to obtain a gel-like substance, and then firing it. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7207588A JPH01246110A (en) | 1988-03-28 | 1988-03-28 | Production of compound oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7207588A JPH01246110A (en) | 1988-03-28 | 1988-03-28 | Production of compound oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01246110A true JPH01246110A (en) | 1989-10-02 |
Family
ID=13478925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7207588A Pending JPH01246110A (en) | 1988-03-28 | 1988-03-28 | Production of compound oxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01246110A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003103832A2 (en) * | 2002-06-05 | 2003-12-18 | University Technologies International Inc. | Oxygen reduction catalyst |
| JP2013040090A (en) * | 2011-08-19 | 2013-02-28 | Nagaoka Univ Of Technology | Method of producing metal oxide particle with spherical shape |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63307113A (en) * | 1987-06-08 | 1988-12-14 | Nippon Telegr & Teleph Corp <Ntt> | Production of superconductor |
| JPS63310721A (en) * | 1987-06-12 | 1988-12-19 | Kanegafuchi Chem Ind Co Ltd | Production of solution of compound metal to be used for forming oxide superconducting compound |
| JPS6411977A (en) * | 1987-07-03 | 1989-01-17 | Kanegafuchi Chemical Ind | Production of thin film of oxide superconductive compound |
| JPS6424016A (en) * | 1987-07-17 | 1989-01-26 | Nippon Telegraph & Telephone | Process and device for producing superconductor |
| JPS6465003A (en) * | 1987-01-30 | 1989-03-10 | Agency Ind Science Techn | Superconductive material and production thereof |
| JPS6465007A (en) * | 1987-01-30 | 1989-03-10 | Agency Ind Science Techn | Starting material solution for superconductive material |
-
1988
- 1988-03-28 JP JP7207588A patent/JPH01246110A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6465003A (en) * | 1987-01-30 | 1989-03-10 | Agency Ind Science Techn | Superconductive material and production thereof |
| JPS6465007A (en) * | 1987-01-30 | 1989-03-10 | Agency Ind Science Techn | Starting material solution for superconductive material |
| JPS63307113A (en) * | 1987-06-08 | 1988-12-14 | Nippon Telegr & Teleph Corp <Ntt> | Production of superconductor |
| JPS63310721A (en) * | 1987-06-12 | 1988-12-19 | Kanegafuchi Chem Ind Co Ltd | Production of solution of compound metal to be used for forming oxide superconducting compound |
| JPS6411977A (en) * | 1987-07-03 | 1989-01-17 | Kanegafuchi Chemical Ind | Production of thin film of oxide superconductive compound |
| JPS6424016A (en) * | 1987-07-17 | 1989-01-26 | Nippon Telegraph & Telephone | Process and device for producing superconductor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003103832A2 (en) * | 2002-06-05 | 2003-12-18 | University Technologies International Inc. | Oxygen reduction catalyst |
| WO2003103832A3 (en) * | 2002-06-05 | 2004-03-04 | Univ Technologies Int | Oxygen reduction catalyst |
| JP2013040090A (en) * | 2011-08-19 | 2013-02-28 | Nagaoka Univ Of Technology | Method of producing metal oxide particle with spherical shape |
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