JPH0193404A - Production of raw material powder of compound having garnet structure - Google Patents
Production of raw material powder of compound having garnet structureInfo
- Publication number
- JPH0193404A JPH0193404A JP62248957A JP24895787A JPH0193404A JP H0193404 A JPH0193404 A JP H0193404A JP 62248957 A JP62248957 A JP 62248957A JP 24895787 A JP24895787 A JP 24895787A JP H0193404 A JPH0193404 A JP H0193404A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- metals
- garnet structure
- raw material
- precipitates
- 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.)
- Granted
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 25
- 239000000843 powder Substances 0.000 title claims abstract description 23
- 239000002223 garnet Substances 0.000 title claims abstract description 22
- 239000002994 raw material Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000002244 precipitate Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004202 carbamide Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 13
- 150000002739 metals Chemical class 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 abstract description 7
- 239000007864 aqueous solution Substances 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 5
- 230000002378 acidificating effect Effects 0.000 abstract description 4
- 230000009257 reactivity Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 229910052746 lanthanum Inorganic materials 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 239000006227 byproduct Substances 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- OBOSXEWFRARQPU-UHFFFAOYSA-N 2-n,2-n-dimethylpyridine-2,5-diamine Chemical compound CN(C)C1=CC=C(N)C=N1 OBOSXEWFRARQPU-UHFFFAOYSA-N 0.000 description 1
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- WHOPEPSOPUIRQQ-UHFFFAOYSA-N oxoaluminum Chemical compound O1[Al]O[Al]1 WHOPEPSOPUIRQQ-UHFFFAOYSA-N 0.000 description 1
- UZLYXNNZYFBAQO-UHFFFAOYSA-N oxygen(2-);ytterbium(3+) Chemical compound [O-2].[O-2].[O-2].[Yb+3].[Yb+3] UZLYXNNZYFBAQO-UHFFFAOYSA-N 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229910003454 ytterbium oxide Inorganic materials 0.000 description 1
- 229940075624 ytterbium oxide Drugs 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はガーネット構造を持つ化合物の原料粉末の製造
方法に関する。更に詳しくは易反応性。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for producing raw material powder of a compound having a garnet structure. More specifically, easy reactivity.
易焼結性、均一性を備えたガーネット構造を持つ化合物
の原料粉末の製造方法に関する。The present invention relates to a method for producing raw material powder of a compound having a garnet structure that is easily sinterable and has uniformity.
ガーネット構造を持つ化合物は磁性体、レーザーホスト
材料、センサー等の機能を有し、広範囲に利用されてい
る。最近では、その製造にセラミックス製造法を利用し
た製造法が進展し、そのため、易反応性、易焼結性、均
一性を備えた原料粉末が要望されている。Compounds with a garnet structure have functions such as magnetic substances, laser host materials, and sensors, and are widely used. Recently, manufacturing methods using ceramic manufacturing methods have been developed, and there is therefore a demand for raw material powders that are easily reactive, easily sinterable, and uniform.
従来技術
従来、ガーネット構造を持つ化合物の原料粉末の製造方
法としては、乾式法、湿式法および塩の直接分解法が知
られている。BACKGROUND ART Conventionally, dry methods, wet methods, and direct salt decomposition methods are known as methods for producing raw material powders of compounds having a garnet structure.
乾式法は構成原料化合物を乾式で混合し、これを仮焼す
る方法である。しかし、この方法では均一組成あるいは
単一化合物原料粉末が得難いため、優れた機能を持つガ
ーネット構造を持つ化合物を作りがたく、またその焼結
性は十分でない欠点があった。The dry method is a method in which constituent raw material compounds are mixed in a dry method and this is calcined. However, this method has the disadvantage that it is difficult to obtain a uniform composition or a single compound raw material powder, making it difficult to produce a compound with a garnet structure that has excellent functionality, and that its sinterability is insufficient.
湿式法は構成成分の混合酸性溶液にアンモニア水等のア
ルカリ沈殿剤を添加して共沈させ、この沈殿物を乾燥、
仮焼する方法である。この方法によると瞬時にｐｎが変
化し反応するため、溶液の過飽和度が大きくなり、多く
の核が形成し、互いに接触してゼリー状沈殿を生成し、
その中に塩化アンモニウム塩の副生成物を吸蔵する。ゼ
リー状沈殿であるため、洗浄は容易でなく、副生成物の
完全除去が極めて困難である。この副生成物は仮焼段階
で一次粒子の成長を促し、結果的に得られる粉体の活性
が失われる欠点があった。In the wet method, an alkaline precipitant such as aqueous ammonia is added to a mixed acidic solution of the constituent components to cause coprecipitation, and this precipitate is dried.
This is a method of calcining. According to this method, the pn changes instantaneously and the reaction occurs, so the degree of supersaturation of the solution increases, many nuclei are formed, and they come into contact with each other to form a jelly-like precipitate.
It stores ammonium chloride salt by-products therein. Since it is a jelly-like precipitate, it is not easy to wash, and it is extremely difficult to completely remove by-products. This by-product promotes the growth of primary particles during the calcination stage, resulting in a loss of activity in the resulting powder.
また、塩直接分解法はその分解によりガーネット構造を
持つ化合物形成時に多量の有害ガスを発生する欠点があ
る。In addition, the direct salt decomposition method has the disadvantage that a large amount of harmful gas is generated when a compound having a garnet structure is formed by the decomposition.
発明の目的
本発明は前記従来法における欠点がないガーネット構造
を持つ化合物の原料粉末の製造方法を提供するにある。OBJECTS OF THE INVENTION The present invention provides a method for producing raw material powder of a compound having a garnet structure, which does not have the drawbacks of the conventional methods.
発明の構成
本発明者は前記目的を達成すべく鋭意研究の結果、ガー
ネット構造を持つ化合物の構成金属元素を含んだ混合酸
性水溶液を作り、これに酸に対しモル比で２〜１０倍量
の尿素を加え加熱すると、ｐｔｉが８となる間に不溶性
金属塩が徐々に形成する。Structure of the Invention As a result of intensive research to achieve the above object, the present inventor prepared a mixed acidic aqueous solution containing the constituent metal elements of a compound having a garnet structure, and added 2 to 10 times the molar amount of the acid to the mixed acidic aqueous solution. When urea is added and heated, an insoluble metal salt is gradually formed while the pti reaches 8.
得られた沈殿物を乾燥後仮焼すると、従来法の湿式法に
おける欠点を解消し得られ、かつ有害ガスの発生もなく
、易反応性、易焼結性の原料粉末が得られることを究明
し得た。この知見に基づいて本発明を完成した。It was discovered that by drying and then calcining the obtained precipitate, the drawbacks of the conventional wet method could be overcome, and a raw material powder with high reactivity and sinterability could be obtained without generating harmful gases. I was able to do it. The present invention was completed based on this knowledge.
本発明の要旨は、
一般式ＡｓＢｓ０＋ｚ
（ただし、Ａは酸素８配位位置をしめる金属の１種また
は２種以上を、Ｂは酸素６配位および４配位位置をしめ
る金属の１種または２種以上を表わす。）
で示されるガーネット構造を持つ化合物の原料粉末の製
造において、Ａ成分とＢ成分の両金属元素を含んだ混合
酸性水溶液を作り、これに酸に対しモル比で２〜１０倍
量の尿素を加え加熱して不溶性金属の沈殿を形成させ、
得られた沈殿物を乾燥後５００“ひ〜１３００°Ｃで仮
焼することを特徴とするガーネット構造を持つ化合物の
原料粉末の製造方法、にある。The gist of the present invention is the general formula AsBs0+z (where A is one or more metals that occupy the 8-coordination position of oxygen, and B represents one or more metals that occupy the 6-coordination and 4-coordination positions of oxygen. In the production of raw material powder of a compound having a garnet structure shown in Double the amount of urea is added and heated to form a precipitate of insoluble metals,
A method for producing a raw material powder of a compound having a garnet structure, characterized in that the obtained precipitate is dried and then calcined at 500°C to 1300°C.
前記一般式のＡ成分の酸素８配位位置をしめる金属とし
ては、例えばＹ、Ｌａ等の希土類元素およびＣａ、 Ｂ
ｉが挙げられる。またＢ成分の酸素６配位および４配位
位置をしめる金属としては、例えばＡＩ、 Ｆｅ、 Ｇ
ａ、 Ｓｃが挙げられる。Examples of metals that occupy the 8-coordination position of oxygen in component A in the general formula include rare earth elements such as Y and La, and Ca, B
i is mentioned. In addition, the metals that occupy the oxygen 6-coordination and 4-coordination positions of component B include, for example, AI, Fe, G
a, Sc.
ガーネット構造を持つ化合物は、Ａ成分に不足の正電荷
を持つものにたいしては、過剰の電荷を持った元素で補
償し得る。また陽イオンあるいは陰イオンの欠陥で補償
することもできる０本発明においては、これらのガーネ
ット構造を持つ化合物も含む。In a compound having a garnet structure, the lack of positive charge in the A component can be compensated for with an element having an excess charge. Furthermore, the present invention also includes compounds having these garnet structures, which can be compensated for by defects in cations or anions.
ガーネット構造を持つ化合物の構成成分ＡとＢの酸性水
溶液を作る際の塩としては、硫酸塩、塩化物、硝酸塩何
れでもよい。また、成分Ａ、Ｂを鉱酸に溶解させたもの
でもよい、沈殿形成剤として尿素を用いるが、これは酸
に対しモル比で２〜１０倍量添加する。２倍量未満では
沈殿が定量的に得られない、また１０倍量を超えると尿
素が無駄となり副生成物も混入しはじめる。この溶液を
尿素の分解温度に加熱する。この加熱により尿素は徐々
に分解してＣＯ，とＮＨ４０１１になり、生成するＮ）
１４０ＨによりｐＨは徐々に上昇し沈殿を形成する。ｐ
Ｈを７〜８にすることによって全部のＡ、Ｂの沈殿が生
成する。このように徐々に沈殿を形成するため、過飽和
度が小さく核の数を抑えることができ大きな沈殿となり
、ゼリー状にならない。このため、副生成物の吸蔵が少
なく、且つ一個一個の沈殿粒子が大きいため、洗浄によ
り容易に副生成物を除去し得られる。The salt used in preparing the acidic aqueous solution of constituent components A and B of the compound having a garnet structure may be any of sulfates, chlorides, and nitrates. Further, components A and B may be dissolved in a mineral acid, and urea is used as a precipitate forming agent, and this is added in an amount of 2 to 10 times the acid in terms of molar ratio. If the amount is less than 2 times, the precipitate cannot be quantitatively obtained, and if the amount exceeds 10 times, urea is wasted and by-products start to be mixed in. This solution is heated to the decomposition temperature of urea. Due to this heating, urea gradually decomposes into CO, and NH4011, and N)
140H causes the pH to gradually rise and form a precipitate. p
By setting H to 7 to 8, all A and B precipitates are formed. Since the precipitate is formed gradually in this way, the degree of supersaturation is low and the number of nuclei can be suppressed, resulting in a large precipitate that does not become jelly-like. Therefore, the amount of by-products stored is small and each precipitated particle is large, so by-products can be easily removed by washing.
得られた沈殿物を乾燥し、５００″Ｃ〜１３００℃で仮
焼する。これにより均一でかつ易焼結性、易反応性のガ
ーネット構造を持つ化合物の原料粉末が得られる。仮焼
温度が５００℃未満では沈殿物の脱水や熱分解が不十分
で、また１３００℃を超えると粉末が粗粒化し反応性が
低下するので、５００℃〜１３００°Ｃであることが適
当である。The obtained precipitate is dried and calcined at 500"C to 1300C. This yields a uniform raw material powder of a compound having a garnet structure that is easily sintered and easily reacted. The calcination temperature is If it is less than 500°C, dehydration and thermal decomposition of the precipitate will be insufficient, and if it exceeds 1300°C, the powder will become coarse and the reactivity will be reduced, so a temperature of 500°C to 1300°C is suitable.
実施例１゜
酸化鉄２．７９３ｇ及び酸化イッテルビウム４．１３７
ｇ（ＹｂｚＦｅｓＯｔｚ として０．００７ｍｏｌ）を
２５ｃｃの濃塩酸に溶解し、更に水を加えて１２とした
。これに尿素を１７５ｇ （酸に対して１０倍量）加え
溶解させた後、約９５°Ｃで３０分間加熱した。その後
２１の水を加え尿素の分解を止め、沈殿物を洗浄が過乾
燥した。Example 1゜2.793g of iron oxide and 4.137g of ytterbium oxide
g (0.007 mol as YbzFesOtz) was dissolved in 25 cc of concentrated hydrochloric acid, and water was further added to make 12. After adding and dissolving 175 g of urea (10 times the amount of acid), the mixture was heated at about 95°C for 30 minutes. Thereafter, water from step 21 was added to stop the decomposition of urea, and the precipitate was washed and overdried.
得られた乾燥物を１２００°Ｃ１空気中で４時間仮焼し
てＹｂ：＋Ｆｅ５０＋ｚ−相のガーネット構造を持つ化
合のものが得られた。The obtained dried product was calcined in air at 1200° C. for 4 hours to obtain a compound having a garnet structure of Yb:+Fe50+z-phase.
実施例２゜
硝酸イツトリウム１．０７ｍｏｌ溶液を２ＯＲＩ １、
硝酸アルミニウム０．９３９ ｍｏｌ 溶液を３７．９
８ ｍｌ（Ｙ３ＡｌｓＯ＋ｔとして０．００７ ｍｏｌ
）の混合液に水を加えてＩＩｌとした。ついで尿素５
１．４ｇを加え溶解させた後、約９５°Ｃに加熱し５時
間保持した。その後２１の水を加えて尿素の分解を止め
、沈殿物を洗浄、濾過乾燥し、１１００°Ｃで空気中３
時間仮焼した。粉末Ｘ線回折によるとＹｉＡｌｓＯ＋□
ガーネット構造の化合物の一相のものであった。Example 2 1.07 mol solution of yttrium nitrate was added to 2 ORI 1,
Aluminum nitrate 0.939 mol solution 37.9
8 ml (0.007 mol as Y3AlsO+t
) was added with water to make IIl. Then urea 5
After adding and dissolving 1.4 g, it was heated to about 95°C and held for 5 hours. After that, 21 water was added to stop the decomposition of urea, the precipitate was washed, filtered and dried, and 3
Calcined for an hour. According to powder X-ray diffraction, YiAlsO+□
It was one phase of a compound with a garnet structure.
／どθθ０Ｃて１
これ槍鉢結すると、焼結密度が理論値の９５％以上のも
のが得られた。/doθθ0Cte1 When this was sintered, a sintered density of 95% or more of the theoretical value was obtained.
比較例１゜
市販のＹ２Ｏ２、Ａｌ２Ｏ２の各粉末をＹ、ＡＩ、Ｏ，
オの組成になるように配合し、ボールミル混合後、１１
００°Ｃで空気中２４時間仮焼し、再びボールミル混合
して粉末を得た。この粉末はＡｔｔｏ、、 Ｙ、０３゜
Ｙ、＾ｔＳＯ１等の混合物であった。これを更に１５０
０″Ｃで空気中１２時間熱処理したが、Ｙ３Ａ１５０１
５ガーネあった。Comparative Example 1゜ Commercially available powders of Y2O2 and Al2O2 were mixed with Y, AI, O,
After mixing in a ball mill, 11
The mixture was calcined in air at 00°C for 24 hours and mixed again in a ball mill to obtain a powder. This powder was a mixture of Atto, Y, 03°Y, ^tSO1, etc. Add this to another 150
Although heat treated in air at 0″C for 12 hours, Y3A1501
There were 5 garnes.
比較例２゜
塩化アルミニウムと塩化イツトリウムをモル比で５：３
の割合で含む０．５１ＩＩｏｌ水溶液の２００ ｃｃに
、ｐ１１７になるように０．５ ｍｏｌアンモニア水を
加えた。Comparative Example 2゜Molar ratio of aluminum chloride and yttrium chloride is 5:3
0.5 mol ammonia water was added to 200 cc of a 0.51 IIol aqueous solution containing a ratio of 0.5 mol to p117.
生成した沈殿は瞬時にゼリー状となり、濾過することが
できなかった。そこで、６０００ｒｐｎ＋で遠心分離デ
カンテーションをすることにより沈殿物を洗浄して粉末
を得た。The generated precipitate instantly became jelly-like and could not be filtered. Therefore, the precipitate was washed by centrifugation and decantation at 6000 rpm+ to obtain a powder.
１回だけの洗浄の粉末中には２０重景％以上の塩素化合
物を含み、これを除くには７回以上の洗浄を必要とした
。この洗浄時間は１日以上を必要とする。これを１１０
０°Ｃで仮焼した物はガーネット構造を持った化合物の
単相であったが、−次粒子径であった。The powder that was washed only once contained more than 20% of chlorine compounds, which required more than seven washings to remove them. This cleaning time requires one day or more. This is 110
The material calcined at 0°C had a single phase of a compound having a garnet structure, but had a -order particle size.
発明の効果
本発明の方法によると、沈殿形成剤として尿素大きな沈
殿物となり、ゼリー状となることがない。Effects of the Invention According to the method of the present invention, urea as a precipitate forming agent does not form a large precipitate or become jelly-like.
従って、沈殿物の洗浄は容易で副生酸物含有のない粉末
が容易に得られ、かつ仮焼時における一次粒子の成長も
な（、均一、易焼結性、易反応性の原料が得られる。こ
れにより従来の湿式法における欠点をなくし得る。また
固相法に比し易反応性。Therefore, it is easy to wash the precipitate, it is easy to obtain a powder that does not contain by-product oxides, and there is no growth of primary particles during calcination (uniform, easily sinterable, and easily reactive raw materials are obtained). This eliminates the drawbacks of conventional wet methods.Also, it is more reactive than solid phase methods.
易焼結性でガーネット構造を持つ化合物の単相のものが
得られると共に塩直接分解法におけるような有害ガスの
発生もない優れた効果を有する。A single-phase compound with a garnet structure that is easily sintered can be obtained, and it has an excellent effect of not generating harmful gases unlike the direct salt decomposition method.
特許出願人 科学技術庁無機材質研究崩長瀬 高
信 血Patent applicant: Taka Nagase, Research Institute for Inorganic Materials, Science and Technology Agency
faith blood
Claims (1)
は２種以上を、Ｂは酸素６配位および４配位位置をしめ
る金属の１種または２種以上を表わす。） で示されるガーネット構造を持つ化合物の原料粉末の製
造において、Ａ成分とＢ成分の両金属元素を含んだ混合
酸性水溶液を作り、これに酸に対しモル比で２〜１０倍
量の尿素を加え加熱して不溶性金属の沈殿を形成させ、
得られた沈殿物を乾燥後５００℃〜１３００℃で仮焼す
ることを特徴とするガーネット構造を持つ化合物の原料
粉末の製造方法。[Claims] General formula A_3B_5O_1_2 (where A is one or more metals that have an 8-coordination position of oxygen, and B represents one or two metals that have a 6-coordination position and a 4-coordination position of oxygen). In the production of raw material powder of a compound having a garnet structure shown in Double the amount of urea is added and heated to form a precipitate of insoluble metals,
A method for producing a raw material powder of a compound having a garnet structure, which comprises drying the obtained precipitate and then calcining it at 500°C to 1300°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62248957A JPH0193404A (en) | 1987-10-01 | 1987-10-01 | Production of raw material powder of compound having garnet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62248957A JPH0193404A (en) | 1987-10-01 | 1987-10-01 | Production of raw material powder of compound having garnet structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0193404A true JPH0193404A (en) | 1989-04-12 |
| JPH0446884B2 JPH0446884B2 (en) | 1992-07-31 |
Family
ID=17185918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62248957A Granted JPH0193404A (en) | 1987-10-01 | 1987-10-01 | Production of raw material powder of compound having garnet structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0193404A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995004701A1 (en) * | 1993-08-11 | 1995-02-16 | Sumitomo Chemical Company, Limited | Composite metal oxide powder and process for producing the same |
| JP2001158620A (en) * | 1999-09-20 | 2001-06-12 | Shin Etsu Chem Co Ltd | Rare earth-aluminum-garnet fine powder, method for producing the same and sintered compact using the same powder |
| EP1338556A2 (en) * | 2002-02-26 | 2003-08-27 | Sumitomo Chemical Company, Limited | Process for producing particles of a metal compound |
| US7691765B2 (en) | 2005-03-31 | 2010-04-06 | Fujifilm Corporation | Translucent material and manufacturing method of the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696728A (en) * | 1979-11-09 | 1981-08-05 | Rhone Poulenc Ind | Manufacture of polycrystalline garnet containing at least one element selected from groups comprising aluminum and*or gallium and*or indium* rare earth element and yttrium and corresponding single cry |
| JPS5696727A (en) * | 1979-11-09 | 1981-08-05 | Rhone Poulenc Ind | Manufacture of polycrystalline garnet and corresponding single crystal |
-
1987
- 1987-10-01 JP JP62248957A patent/JPH0193404A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696728A (en) * | 1979-11-09 | 1981-08-05 | Rhone Poulenc Ind | Manufacture of polycrystalline garnet containing at least one element selected from groups comprising aluminum and*or gallium and*or indium* rare earth element and yttrium and corresponding single cry |
| JPS5696727A (en) * | 1979-11-09 | 1981-08-05 | Rhone Poulenc Ind | Manufacture of polycrystalline garnet and corresponding single crystal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995004701A1 (en) * | 1993-08-11 | 1995-02-16 | Sumitomo Chemical Company, Limited | Composite metal oxide powder and process for producing the same |
| JP2001158620A (en) * | 1999-09-20 | 2001-06-12 | Shin Etsu Chem Co Ltd | Rare earth-aluminum-garnet fine powder, method for producing the same and sintered compact using the same powder |
| EP1338556A2 (en) * | 2002-02-26 | 2003-08-27 | Sumitomo Chemical Company, Limited | Process for producing particles of a metal compound |
| EP1338556A3 (en) * | 2002-02-26 | 2004-01-07 | Sumitomo Chemical Company, Limited | Process for producing particles of a metal compound |
| US7691765B2 (en) | 2005-03-31 | 2010-04-06 | Fujifilm Corporation | Translucent material and manufacturing method of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0446884B2 (en) | 1992-07-31 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |