JPS63185803A - Spherical compound metal oxide particle and production thereof - Google Patents
Spherical compound metal oxide particle and production thereofInfo
- Publication number
- JPS63185803A JPS63185803A JP62052987A JP5298787A JPS63185803A JP S63185803 A JPS63185803 A JP S63185803A JP 62052987 A JP62052987 A JP 62052987A JP 5298787 A JP5298787 A JP 5298787A JP S63185803 A JPS63185803 A JP S63185803A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- metal oxide
- alloy powder
- combustion
- composite metal
- 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
- 239000002245 particle Substances 0.000 title claims abstract description 43
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- -1 compound metal oxide Chemical class 0.000 title abstract description 3
- 239000000843 powder Substances 0.000 claims abstract description 49
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 36
- 239000000956 alloy Substances 0.000 claims abstract description 36
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims description 33
- 150000004706 metal oxides Chemical class 0.000 claims description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 15
- 229910052596 spinel Inorganic materials 0.000 abstract description 12
- 239000011029 spinel Substances 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 7
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052839 forsterite Inorganic materials 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052863 mullite Inorganic materials 0.000 abstract description 5
- 230000002776 aggregation Effects 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract description 3
- 238000004220 aggregation Methods 0.000 abstract description 2
- 238000005422 blasting Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 101100326920 Caenorhabditis elegans ctl-1 gene Proteins 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 229910002064 alloy oxide Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000696 magnetic material Substances 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
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005118 spray pyrolysis Methods 0.000 description 1
- 238000003826 uniaxial pressing Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 230000002747 voluntary effect Effects 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、顔料、触媒、フィラー、多孔体用原料、焼結
用原料、焼結助剤、センサー用原料、磁性材料等として
の用途に供することのできる球状複合酸化物粒子および
その製法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applicable to pigments, catalysts, fillers, raw materials for porous bodies, raw materials for sintering, sintering aids, raw materials for sensors, magnetic materials, etc. The present invention relates to spherical composite oxide particles that can be provided and a method for producing the same.
近年、種々の産業分野で、分散性、流動性及び充填性に
優れた粉末に対する要求はますます高まっている。この
種粉末の一つとして複合金属酸化物粉末が考えられるが
、従来の複合金属酸化物は粒子形状が不定形であったり
、粒子同志の凝集あるいは融着が激しいため、上記特性
を満足できる粉末とは必ずしも言い難い。In recent years, there has been an increasing demand for powders with excellent dispersibility, fluidity, and filling properties in various industrial fields. Composite metal oxide powder can be considered as one type of powder, but since conventional composite metal oxides have irregular particle shapes and severe agglomeration or fusion of particles, powders that can satisfy the above characteristics are That is not necessarily true.
たとえば、固相法により得られた複合金属酸化物は、粉
砕処理が必要であり、そのために構成粒子は不定形でお
る。For example, composite metal oxides obtained by the solid phase method require pulverization treatment, which causes the constituent particles to have an amorphous shape.
また、「窯業協会法ｊ ８６ （９）Ｐ４３３−４３４
（１９７８）に開示された均一沈澱法ならびに「窯業
協会法Ｊ ９１ （４）Ｐ１６４−１７０（１９８３）
に開示された噴霧熱分解法により得られた複合金属酸化
物は二次凝集粒子を形成するため、分散性、流動性、及
び充填性に劣る。Also, “Ceramics Association Law J 86 (9) P433-434
(1978) and the Ceramics Association Law J 91 (4) P164-170 (1983).
Since the composite metal oxide obtained by the spray pyrolysis method disclosed in 2004 forms secondary agglomerated particles, it is inferior in dispersibility, fluidity, and filling property.
ざらに、「日本化学会誌」Ｎα１１Ｐ１７５８−１７６
２ （１９８２）に記載の気相法により得られた複合金
属酸化物粒子は、単−金属酸化物粒子を含有するため、
２種類以上の形状を有し、融着している。Zarani, “Journal of the Chemical Society of Japan” Nα11P1758-176
Since the composite metal oxide particles obtained by the vapor phase method described in 2 (1982) contain single-metal oxide particles,
It has two or more shapes and is fused together.
その他に、「窯業協会誌Ｊ ９０ （１０） Ｐ２Ｏ３
−６０９（１９８２）に開示された水中火花放電により
得られた複合金属酸化物は、不定形粒子が融着している
。In addition, “Ceramic Industry Association Journal J 90 (10) P2O3
The composite metal oxide obtained by underwater spark discharge disclosed in No. 609 (1982) has amorphous particles fused together.
以上のように、従来の複合金属酸化物は、（１）−数粒
子が不定形であること、（２）これらが凝集おるいは融
着していること等の問題点があるため、多くの産業用途
におけるこれらの物質の有用性が損われていた。As mentioned above, conventional composite metal oxides have many problems, such as (1) several particles are amorphous, and (2) these particles are aggregated or fused. The usefulness of these materials in industrial applications was compromised.
〔問題点を解決するための手段〕
本発明は、粒子同志の凝集あるいは融着がなく、粒子形
状が球状であるため、分散性、流動性および充填性に優
れた複合金属酸化物粒子およびその製法を提供する。[Means for Solving the Problems] The present invention provides composite metal oxide particles and composite metal oxide particles that have excellent dispersibility, fluidity, and filling properties because the particles do not aggregate or fuse together and have a spherical shape. Provide manufacturing method.
本発明の球状複合金属酸化物粒子は、８５重世％以上が
０．０２〜０．３０μｍの範囲内の直径を有し、かつ短
軸径に対する長軸径の比が１．０〜１．３、好ましくは
１゜Ｏ〜１．２の範囲内でおる粒子で構成されている。In the spherical composite metal oxide particles of the present invention, 85% or more have a diameter within the range of 0.02 to 0.30 μm, and the ratio of the major axis diameter to the minor axis diameter is 1.0 to 1.0 μm. 3, preferably in the range of 1°O to 1.2°.
上記複合金属酸化物の具体例としては、スピネル（Ｍｇ
Ｏ・Ａｊ！２０３）、フォルステライト（２Ｍｇｏ−８
１０２）、ムライト（３Ａρ２ｏ３・２Ｓｉｏ２）、ス
タアタイト（Ｍｑｏ・Ｓ！０２ ）、Ａｊ２０３ ・５
ｉ０２ 、ＭＱＯ”Ｔ ｉ ０２ 、ＭＱｏ・２Ｔ ｉ
０２．２ＭＣｌ０・ＴｉＯ２、ＢｅＯ”ＡＩ！ ２０
３．２ＢＷＯ”Ｓ ！０２等が挙げられる。As a specific example of the above composite metal oxide, spinel (Mg
O・Aj! 203), forsterite (2Mgo-8
102), Mullite (3Aρ2o3・2Sio2), Staatite (Mqo・S!02), Aj203・5
i02, MQO"T i 02, MQo・2T i
02.2MCl0・TiO2, BeO"AI! 20
3.2BWO”S!02 etc. are mentioned.
前記の球状複合金属酸化物粒子は、本発明の製法に従っ
て製造することができる。The spherical composite metal oxide particles described above can be manufactured according to the manufacturing method of the present invention.
本発明の製法においては、原料として上記球状複合金属
酸化物粒子における金属の組成比に対応する組成の合金
粉末が使用され、例えばスピネルではＭｇ−１！ （
原子比１：２＞、フォルステライトではＭｇ−３ｉ（原
子比２：１）、ムライトではＡｆｌ−３ｉ（原子比３：
１）がそれぞれ合金粉末として使用される。In the manufacturing method of the present invention, an alloy powder having a composition corresponding to the metal composition ratio in the above-mentioned spherical composite metal oxide particles is used as a raw material. For example, for spinel, Mg-1! (
Atomic ratio 1:2>, forsterite has Mg-3i (atomic ratio 2:1), mullite has Afl-3i (atomic ratio 3:
1) are respectively used as alloy powders.
合金粉末を用いずに、単一組成の金属粉末同志を、目的
とする複合金属酸化物を形成する組成比となるように混
合して得られる混合物を燃焼させると、原料単一組成金
属に相当する酸化物微粉末が生成し、ついでこの酸化物
が反応することにより複合酸化物が生成するため、得ら
れる生成物は複合酸化物と単一組成の酸化物の混合物と
なる。If you burn a mixture obtained by mixing metal powders of a single composition in a composition ratio that forms the desired composite metal oxide without using alloy powder, it will be equivalent to the raw material single composition metal. A fine oxide powder is produced, and then this oxide reacts to produce a composite oxide, so the resulting product is a mixture of the composite oxide and the oxide of a single composition.
原料として合金粉末を用いる本発明の製法によると、合
金は元素が原子のオーダーで混合しているため、合金粉
末が燃焼する際に直接複合金属酸化物が生成し、目的と
する複合金属酸化物微粉末を製造することが可能となる
。According to the manufacturing method of the present invention that uses alloy powder as a raw material, since the alloy is a mixture of elements on the order of atoms, a composite metal oxide is directly generated when the alloy powder is burned, and the desired composite metal oxide is produced. It becomes possible to produce fine powder.
本発明の製法で使用する合金粉末の粒子径は、２００μ
ｍ以下であることが好ましい。粒子径がこれ以上大きい
と燃焼性が悪くなり、未反応合金粉末が複合合金酸化物
に残存するようになる。The particle size of the alloy powder used in the production method of the present invention is 200μ
It is preferable that it is below m. If the particle size is larger than this, combustibility will deteriorate and unreacted alloy powder will remain in the composite alloy oxide.
この合金粉末はバーナーノズルから噴出させて酸素含有
ガス雰囲気下に浮遊させて燃焼させる。This alloy powder is ejected from a burner nozzle, suspended in an oxygen-containing gas atmosphere, and burned.
合金粉末は一般に噴出用ガスとしては、窒素、アルゴン
のような不活性ガスが好ましく使用される。In general, an inert gas such as nitrogen or argon is preferably used as the blowing gas for the alloy powder.
合金粉末の着火・燃焼は合金の燃焼熱を利用する。Ignition and combustion of the alloy powder utilizes the combustion heat of the alloy.
合金粉末の燃焼熱は５０００ ｃａｌ／９以上と大きい
ため、火炎温度は５０００℃以上となる。そのため、−
目生成した複合金［２化物粒子は火炎内で溶融する（ス
ピネル、フォルステライトおよびムライトの融点はそれ
ぞれ２１３５℃、１８９０℃、１８８０℃）。その後、
急冷することにより、回収された粒子は球状となる。ま
た、複合金属酸化物の火炎内滞留時間は０．１〜１秒と
非常に短かいため、溶融粒子の凝集おるいは融着は起こ
らない。Since the combustion heat of the alloy powder is as large as 5000 cal/9 or more, the flame temperature is 5000° C. or more. Therefore, −
The resulting composite gold particles melt in the flame (the melting points of spinel, forsterite, and mullite are 2135°C, 1890°C, and 1880°C, respectively). after that,
By rapid cooling, the recovered particles become spherical. Furthermore, since the residence time of the composite metal oxide in the flame is very short, 0.1 to 1 second, no aggregation or fusion of the molten particles occurs.
合金粉末を安定に燃焼させるためには、火炎の伝播によ
る着火だけでなく、反応室壁や火炎からの輻射熱による
着火を利用することが望ましい。In order to stably burn the alloy powder, it is desirable to utilize not only ignition by flame propagation but also ignition by radiant heat from the reaction chamber wall and flame.
このためには、反応室は断熱構造にして、合金の燃焼熱
が蓄積されるようにすることが好ましい。For this purpose, it is preferable that the reaction chamber has an adiabatic structure so that the heat of combustion of the alloy is accumulated.
通常、金属の燃焼において着火源としては抵抗加熱、高
周波遊動加熱、化学炎、アーク放電、レーザー等がある
が、本発明は前述の様に合金の燃焼熱を利用するため、
通常の着火源を用いる場合に生じる欠点、例えば（１）
反応装置が複雑になり、設備費が高くなるとか、（２）
電気、ガス等を使用するため、製造コストが多角なると
かの欠点を解消することができる。Normally, ignition sources in the combustion of metals include resistance heating, high-frequency floating heating, chemical flame, arc discharge, laser, etc., but as mentioned above, the present invention utilizes the combustion heat of the alloy.
Disadvantages that arise when using ordinary ignition sources, such as (1)
(2) The reaction equipment becomes complicated and equipment costs increase.
Since electricity, gas, etc. are used, it is possible to eliminate the disadvantage of high manufacturing costs.
得られる球複合金属酸化物粒子の粒径は合金粉末の燃焼
状態、例えば含酸素ガスの供給量を変化させることによ
って制御することができる。The particle size of the obtained spherical composite metal oxide particles can be controlled by changing the combustion state of the alloy powder, for example, by changing the amount of oxygen-containing gas supplied.
その−例を示すと、後述する実施例の結果かられかるよ
うに、合金粉末に対する酸素の供給量を増加させると、
得られる複合金属酸化物の粒子径が小さくなる。As an example, as can be seen from the results of the examples described later, when the amount of oxygen supplied to the alloy powder is increased,
The particle size of the resulting composite metal oxide becomes smaller.
次に本発明を実施する際に用いる反応装置の概略図を第
１図に示す。Next, a schematic diagram of a reaction apparatus used in carrying out the present invention is shown in FIG.
合金粉末１はフィダー２によって定」供給され、合金粉
末噴出用ガス導入口４から導入されたガスによってバー
ナーノズル３から反応室６へ噴出される。一方、酸素は
酸素導入口５から反応室へ導入される。合金粉末は燃焼
が安定するまでは電気炉７により加熱され着火されるが
、燃焼が安定したところで電気炉による加熱は止める。The alloy powder 1 is constantly supplied by a feeder 2, and is ejected from the burner nozzle 3 into the reaction chamber 6 by gas introduced from the alloy powder ejecting gas inlet 4. On the other hand, oxygen is introduced into the reaction chamber from the oxygen introduction port 5. The alloy powder is heated and ignited by the electric furnace 7 until the combustion becomes stable, but once the combustion becomes stable, the heating by the electric furnace is stopped.
合金粉末の燃焼により生成した球状複合金属酸化物粒子
はバグフィルタ−８によって捕集される。Spherical composite metal oxide particles generated by combustion of the alloy powder are collected by a bag filter 8.
［実施例］ 次に本発明の実施例を示す。[Example] Next, examples of the present invention will be shown.
実施例１
第１図に示す反応装置を用いて複合金属酸化物を製造し
た。バーナーノズルロ径は６ｍφ、反応室の内径は７０
＃φ、長さが８００ｍである。Example 1 A composite metal oxide was produced using the reaction apparatus shown in FIG. The burner nozzle diameter is 6mφ, and the inner diameter of the reaction chamber is 70mm.
#φ, length is 800m.
合金粉末（１００〜２００メツシユ）はフィダーにより
７ｇ／分の割合で定量供給し、３Ｎρ／分の合金粉末噴
出用ガス（アルゴンガス）とともにバーナーノズルから
噴出された。また、酸素は１５ＮＦ／分の割合で反応室
へ導入した。反応室は電気炉により１２００℃に加熱さ
れ、この輻射により合金粉末を着火し、燃焼が安定した
ところで、電気炉による加熱を停止した。合金粉末の燃
焼により生成した球状複合金属酸化物粒子はバグフィル
タ−で捕集した。また、得られた球状複合酸化物粒子は
透過型電子顕微鏡で粒子径、長軸径及び短軸径を測定し
、Ｘ線回折によって生成物を固定し、窒素吸着法により
比表面積を測定した。The alloy powder (100 to 200 meshes) was quantitatively fed by a feeder at a rate of 7 g/min, and was ejected from a burner nozzle together with an alloy powder ejecting gas (argon gas) at 3 Nρ/min. Further, oxygen was introduced into the reaction chamber at a rate of 15 NF/min. The reaction chamber was heated to 1200° C. by an electric furnace, the alloy powder was ignited by this radiation, and when combustion became stable, heating by the electric furnace was stopped. Spherical composite metal oxide particles produced by combustion of the alloy powder were collected with a bag filter. In addition, the particle diameter, major axis diameter, and minor axis diameter of the obtained spherical composite oxide particles were measured using a transmission electron microscope, the product was fixed by X-ray diffraction, and the specific surface area was measured by a nitrogen adsorption method.
合金粉末の種類を変えて行なった実験結果を第１表に示
す。また、得られたスピネル粉末の透過型電子顕微鏡写
真を第２図に示す。Table 1 shows the results of experiments conducted with different types of alloy powder. Furthermore, a transmission electron micrograph of the obtained spinel powder is shown in FIG.
実施例１で（昇られたスピネル粉末の嵩密度、タップ密
度及び安息角を測定した結果を第２表に示す。嵩密度は
粉末を１００ｍｆ！の容器に充填したときの見掛密度で
おり、タップ密度は１００ｄの粉末を容器に充填した後
、１回／秒の割合で１８０回タップしたときの密度であ
り、安息角はスピネル粉末を板より７．５ｃｍ上部から
落下したときの堆積粉末の稜線と板とのなす角度である
。The bulk density, tap density and angle of repose of the spinel powder lifted in Example 1 are shown in Table 2. The bulk density is the apparent density when the powder is packed in a 100 mf! container. The tapped density is the density when 100 d of powder is filled into a container and tapped 180 times at a rate of 1/sec. The angle of repose is the density of the deposited powder when the spinel powder is dropped from 7.5 cm above the plate. It is the angle between the ridgeline and the plate.
ざらに、実施例１で得られたスピネル粉末を１００Ｋｇ
／ｃｒＡで一軸加圧した後、１．５ｔ／ｃｎでラバープ
レスして製造した成形体の密度及び相対密度（理論密度
を３．５８ｇ／ ＣＴｌ１とした）を第２表に併記する
。Roughly 100 kg of spinel powder obtained in Example 1
Table 2 also shows the density and relative density (theoretical density was set to 3.58 g/CTl1) of the molded product produced by uniaxial pressing at /crA and then rubber pressing at 1.5 t/cn.
比較のため水中火花放電法により得られた市販のスピネ
ル粉末の物性を第２表に示す。For comparison, Table 2 shows the physical properties of commercially available spinel powder obtained by the underwater spark discharge method.
第 ２ 表
実施例２
実施例１において合金粉末をＭＣＩ−Ａ、Ｑ （原子
比１：２）とし、酸素の流量を変えた以外は実施例１と
同様に操作してスピネル粉末を製造した。Table 2 Example 2 Spinel powder was produced in the same manner as in Example 1 except that the alloy powder was MCI-A, Q (atomic ratio 1:2) and the flow rate of oxygen was changed.
その結果を第３表に示す。尚、実施例１の結果を併記す
る。The results are shown in Table 3. Note that the results of Example 1 are also listed.
番 ３ 表Number 3 Table
第１図は本発明の実施の際に使用される反応装置の一例
の概略図であり、第２図は実施例１で得られたスピネル
粉末の粒子構造を示す図である。
３・・・バーナーノズル、５・・・酸素導入口、６・・
・反応室。
特許出願人 宇部興産株式会社
第１図
手続補正書（自発）
昭和６２年 ７月 ７２日FIG. 1 is a schematic diagram of an example of a reaction apparatus used in carrying out the present invention, and FIG. 2 is a diagram showing the particle structure of the spinel powder obtained in Example 1. 3...Burner nozzle, 5...Oxygen inlet, 6...
・Reaction chamber. Patent applicant: Ube Industries, Ltd. Figure 1 procedural amendment (voluntary) July 72, 1988
Claims (4)
粒子が８５重量％以上であり、粒子の短軸径に対する長
軸径の比が１．０〜１．３の範囲内であることを特徴と
する球状複合金属酸化物粒子。(1) Particles having a diameter within the range of 0.02 to 0.30 μm account for 85% by weight or more, and the ratio of the major axis diameter to the minor axis diameter of the particles is within the range of 1.0 to 1.3. A spherical composite metal oxide particle characterized by:
組成の合金粉末を、バーナーノズルから噴出させ、酸素
含有ガス雰囲気に燃焼させることを特徴とする球状複合
金属酸化物粒子の製法。(2) A method for producing spherical composite metal oxide particles, which comprises ejecting alloy powder having a composition corresponding to the metal composition ratio in the composite metal oxide from a burner nozzle and burning it in an oxygen-containing gas atmosphere.
特徴とする特許請求の範囲第（２）項に記載の球状複合
金属酸化物粒子の製法。(3) The method for producing spherical composite metal oxide particles according to claim (2), wherein the particle size of the alloy powder is 200 μm or less.
て行なわれる特許請求の範囲（２）項に記載の球状複合
金属酸化物粒子の製法。(4) The method for producing spherical composite metal oxide particles according to claim (2), wherein the combustion of the alloy powder is performed using the combustion heat of the alloy powder itself.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18515786 | 1986-08-08 | ||
| JP61-185157 | 1986-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63185803A true JPS63185803A (en) | 1988-08-01 |
Family
ID=16165835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62052987A Pending JPS63185803A (en) | 1986-08-08 | 1987-03-10 | Spherical compound metal oxide particle and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63185803A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004065495A2 (en) | 2003-01-24 | 2004-08-05 | Showa Denko K. K. | Surface modification method for inorganic oxide powder, powder produced by the method and use of the powder |
| JP2007106650A (en) * | 2005-10-17 | 2007-04-26 | Denki Kagaku Kogyo Kk | Calcium aluminate, alumina cement composition and monolithic refractory |
| JP2008120673A (en) * | 2006-10-19 | 2008-05-29 | Showa Denko Kk | Spherical inorganic oxide powder, method for producing the same and use thereof |
| JP2008162825A (en) * | 2006-12-27 | 2008-07-17 | Kao Corp | Spherical ceramic particles |
| WO2008084811A1 (en) * | 2007-01-10 | 2008-07-17 | Hitachi Chemical Company, Ltd. | Adhesive for connection of circuit member and semiconductor device using the same |
| TWI400213B (en) * | 2009-03-16 | 2013-07-01 | China Steel Corp | Method for the manufacture of Forsterite film |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141604A (en) * | 1984-12-13 | 1986-06-28 | Tokuyama Soda Co Ltd | Production of inorganic oxide |
-
1987
- 1987-03-10 JP JP62052987A patent/JPS63185803A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141604A (en) * | 1984-12-13 | 1986-06-28 | Tokuyama Soda Co Ltd | Production of inorganic oxide |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004065495A2 (en) | 2003-01-24 | 2004-08-05 | Showa Denko K. K. | Surface modification method for inorganic oxide powder, powder produced by the method and use of the powder |
| US7425287B2 (en) | 2003-01-24 | 2008-09-16 | Showa Denko K.K. | Surface modification method for inorganic oxide powder, powder produced by the method and use of the powder |
| JP2007106650A (en) * | 2005-10-17 | 2007-04-26 | Denki Kagaku Kogyo Kk | Calcium aluminate, alumina cement composition and monolithic refractory |
| JP2008120673A (en) * | 2006-10-19 | 2008-05-29 | Showa Denko Kk | Spherical inorganic oxide powder, method for producing the same and use thereof |
| JP2008162825A (en) * | 2006-12-27 | 2008-07-17 | Kao Corp | Spherical ceramic particles |
| WO2008084811A1 (en) * | 2007-01-10 | 2008-07-17 | Hitachi Chemical Company, Ltd. | Adhesive for connection of circuit member and semiconductor device using the same |
| US8044524B2 (en) | 2007-01-10 | 2011-10-25 | Hitachi Chemical Company, Ltd. | Adhesive for connection of circuit member and semiconductor device using the same |
| TWI485227B (en) * | 2007-01-10 | 2015-05-21 | Hitachi Chemical Co Ltd | Adhesive for circuit component connection and semiconductor device using the same |
| TWI493014B (en) * | 2007-01-10 | 2015-07-21 | Hitachi Chemical Co Ltd | Adhesive for circuit component connection and semiconductor device using the same |
| TWI400213B (en) * | 2009-03-16 | 2013-07-01 | China Steel Corp | Method for the manufacture of Forsterite film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3356323B2 (en) | Fine metal powder | |
| Sytschev et al. | Self-propagating high-temperature synthesis of nanomaterials | |
| JP3383608B2 (en) | Apparatus for synthesizing nanocrystalline materials | |
| US5472477A (en) | Process for the preparation of finely divided metal and ceramic powders | |
| US4812166A (en) | Process for producing ultrafine particles of metals, metal compounds and ceramics and apparatus used therefor | |
| US3848068A (en) | Method for producing metal compounds | |
| Koc et al. | Synthesis of beta silicon carbide powders using carbon coated fumed silica | |
| JP2000514870A (en) | Electrically assisted synthesis of films and particles with precisely tuned properties | |
| ES2034881A1 (en) | Method for preparing powders of nickel alloy and molybdenum for thermal spray coatings. | |
| Mukasyan | Combustion synthesis of silicon carbide | |
| US4508788A (en) | Plasma spray powder | |
| JPS60255602A (en) | Preparation of ultrafine particle of oxide | |
| KR100254065B1 (en) | Fine-particle oxide ceramic powders | |
| US3640757A (en) | Flame deposited oxide coating and method of making same | |
| CN106927436A (en) | A kind of preparation method of chromium nitride nano powder | |
| JPS63185803A (en) | Spherical compound metal oxide particle and production thereof | |
| Comet et al. | Phosphorus‐Based Nanothermites: A New Generation of Pyrotechnics Illustrated by the Example of n‐CuO/Red P Mixtures | |
| JPS5913442B2 (en) | Manufacturing method of high purity type silicon nitride | |
| JPS6140723B2 (en) | ||
| US5389585A (en) | Fine non-oxide ceramic powders | |
| Merzhanov et al. | Self-propagating high-temperature synthesis of carbides, nitrides, and borides | |
| JP3225073B2 (en) | Method for producing metal oxide powder | |
| US6652801B2 (en) | Method for producing agglomerated boron carbide | |
| JPH0226834A (en) | Manufacture of spherical magnetic material | |
| Lin et al. | Combustion synthesis method for synthesis of aluminum nitride powder using aluminum containers (II) |