JPS6291419A - Production of easy-to-sinter composite powder of alumina and zirconia - Google Patents
Production of easy-to-sinter composite powder of alumina and zirconiaInfo
- Publication number
- JPS6291419A JPS6291419A JP60210710A JP21071085A JPS6291419A JP S6291419 A JPS6291419 A JP S6291419A JP 60210710 A JP60210710 A JP 60210710A JP 21071085 A JP21071085 A JP 21071085A JP S6291419 A JPS6291419 A JP S6291419A
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- Prior art keywords
- alumina
- powder
- salt
- composite
- al2o3
- 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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- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、アルミナ・ジルコニア焼結体製造用の原料粉
末の製造方法に係り、さらに詳しくは、アルミナ粉末を
分散したジルコニウム塩含有溶液から沈澱させた沈澱物
を仮焼するアルミナ・ジルコニア複合粉末の製造方法に
関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for producing a raw material powder for producing an alumina-zirconia sintered body, and more specifically, the present invention relates to a method for producing a raw material powder for producing an alumina-zirconia sintered body, and more specifically, the present invention relates to a method for producing a raw material powder for producing an alumina-zirconia sintered body. The present invention relates to a method for producing an alumina-zirconia composite powder by calcining a precipitate.
本発明の方法で製造されるアルミナ・ジルコニア複合粉
末は、極めて焼結性の優れた易焼結性の原料わ）末であ
り、該粉末を使用して、比較的低温の常圧焼成で、高密
度のアルミナ・ジルコニア複合焼結体を製造することが
できる。The alumina-zirconia composite powder produced by the method of the present invention is an easily sinterable raw material powder with extremely excellent sinterability. A high-density alumina-zirconia composite sintered body can be manufactured.
アルミナ・ジルコニア複合焼結体は、高靭性、高硬度で
面Ｊ摩耗性に優れ、機械部材、耐摩耗材、切削材等の構
造祠料としての応用が回持されている機能性セラミック
である。Alumina-zirconia composite sintered bodies are functional ceramics with high toughness, high hardness, and excellent surface J abrasion resistance, and are widely used as structural abrasive materials for machine parts, wear-resistant materials, cutting materials, etc.
〔従来技術〕
アルミナ・ジルコニア複合焼結体は、その優れた靭性、
硬度、体摩耗性等から、機械部材等幅広い用途への応用
が検討さねている。[Prior art] Alumina-zirconia composite sintered bodies have excellent toughness and
Due to its hardness, body abrasion resistance, etc., its application to a wide range of applications such as mechanical parts has not been considered.
通常、α−アルミナ粉末とン／ｌどＩニア粉末とをボー
ルミル等で混合した粉末が、焼結層ギーｌとして使用さ
れる。Usually, a powder obtained by mixing α-alumina powder and N/I powder in a ball mill or the like is used as the sintered layer.
また、アルミナ成分とジ月−′Ｘｌニア成分とを含有す
る水溶液から得られる共沈わ）末も、焼結原料として提
案されている。Further, a coprecipitated powder obtained from an aqueous solution containing an alumina component and a Jige-'Xlnia component has also been proposed as a sintering raw material.
〔発明が解決しようとする問題点］
従来から知られている、ボールミルによる混合法では、
ミクロレヘルでのアルミナわ）末とジルコニア粉末との
均一な混合は困難であり、ある程度の粉末分布の偏りが
７１しるため、焼結体中の粒成長を均一に抑制“４るこ
と！、１ ｔａ ｂい。[Problems to be solved by the invention] In the conventionally known mixing method using a ball mill,
It is difficult to uniformly mix alumina powder and zirconia powder at the micro level, and there is some degree of deviation in the powder distribution. It's taboo.
また、共沈法による粉末口、鉗或は均一であるが、ジル
−１ニアとアルミナの最適仮焼条（′１が異なることか
ら、凝集の少ない易焼結性の粉末を得ることは困難であ
る。In addition, it is difficult to obtain powder that is easy to sinter with little agglomeration due to the difference in the optimum calcined strip ('1) of Zir-1nia and alumina, although it is difficult to obtain a powder that is easy to sinter with little agglomeration. It is.
さらに、安定化剤のアルミナ・＼の混入、固溶が避けら
れない。Furthermore, mixing and solid solution of the stabilizer alumina is unavoidable.
本発明は、ミクロレヘルでの組成の均一性に優れ、焼結
性の高い、アルミナ・ジルコニア複合粉末の、簡便かつ
安価な製造方法を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a simple and inexpensive method for producing alumina-zirconia composite powder, which has excellent uniformity of composition at the micro level and high sinterability.
本発明は、ジルコニウム塩またはジルコニウム塩と安定
化剤とを溶解した液に、アルミナ粉末を分散した分散液
から得られたアルミナとジルコニウム化合物との複合沈
澱を仮焼することを特徴とする易焼結性アルミナ・ジル
コニア複合粉末の製造方法である。The present invention is an easy-to-fire method characterized by calcining a composite precipitate of alumina and a zirconium compound obtained from a dispersion of alumina powder in a solution of a zirconium salt or a zirconium salt and a stabilizer. This is a method for producing condensed alumina-zirconia composite powder.
本発明において、アルミナとジルコニウム化合物との複
合沈澱は、下記の方法のいずれかによって製造される。In the present invention, a composite precipitate of alumina and a zirconium compound is produced by any of the following methods.
（１） ジルコニウム塩水溶液またはジルコニウム塩
水溶液と安定化剤とを含む混合水溶液にアルミナ粉末を
加えてよく分散させたアルミナ分散液を、過剰のアンモ
ニア水中に滴下、攪拌し、沈澱を生成させる方法。(1) A method in which an alumina dispersion obtained by adding alumina powder to an aqueous zirconium salt solution or a mixed aqueous solution containing an aqueous zirconium salt solution and a stabilizer and well-dispersing the mixture is dropped into excess ammonia water and stirred to form a precipitate.
（２） ジルコニウム塩水溶液またはジルコニウム塩
水溶液と安定化剤とを含む混合水溶液を、アルミナ粉末
をよく分散さ−１た過剰量のアンモニア水中に滴下、攪
拌し、沈澱を生成さ−Ｕる方法。(2) A method in which a zirconium salt aqueous solution or a mixed aqueous solution containing a zirconium salt aqueous solution and a stabilizer is dropped into an excess amount of ammonia water in which alumina powder is well dispersed, and stirred to form a precipitate.
本発明で使用されるアルミナわ〕末は、結晶−ｒ径１．
０μｍ以下で、ＢＥＴ比表面積５ｍ”／ｇ以−１−の微
細なα−アルミナまたは仮焼により該α−アルミナとな
る前駆体粉末である。The alumina powder used in the present invention has a crystal-r diameter of 1.
It is a fine α-alumina with a particle size of 0 μm or less and a BET specific surface area of 5 m”/g or more, or a precursor powder that becomes the α-alumina by calcination.
ジルコニウム塩は、水溶性で、ｐ＋＋ ｉｌＡ］整によ
り水和酸化物を生成し仮焼によりジルコニアを生成する
塩であればよく、具体的には、オキシ塩化物、オキシ硝
酸塩、オキシ酢酸塩、オキシ硫酸塩等が挙げられる。The zirconium salt may be any salt that is water-soluble and produces a hydrated oxide by p++ ilA] treatment and zirconia by calcination. Specifically, zirconium salts include oxychloride, oxynitrate, oxyacetate, oxy Examples include sulfates.
このジルコニウム塩の添加型を変化させ、仮焼粉末中の
ＺｒＯ□比率を、１〜９０モル％ＣＺｒＯ７／（ＺｒＯ
□＋Ａ１□０３）〕に調整することにより、目的とする
アルミナ・ジルコニア複合わ）末を得ることができる。By changing the type of addition of this zirconium salt, the ZrO□ ratio in the calcined powder was varied from 1 to 90 mol%CZrO7/(ZrO
□+A1□03)], the desired alumina-zirconia composite powder can be obtained.
安定化剤は、ジル：ｌニラｌ、塩と同様、水溶性で、仮
焼によりｖ２０３、門８０、ＣａＯ１ＣｅＯ□を生成す
るものであればよい。The stabilizer may be any stabilizer as long as it is water-soluble like salt and produces v203, gate 80, and CaO1CeO□ upon calcination.
通常、当該金属の塩化物、硝酸塩等が用いられる。Usually, chlorides, nitrates, etc. of the metal are used.
安定化剤の添加量はその金属種により異なり、イソトリ
ウム塩の場合、Ｙ２Ｏ３としてＺｒＯ□に対し３モル％
以下、マグムシラム塩の場合、ＭｇＯとして１２モル％
以下、カルシウム塩の場合、ＣａＯとして１２モル％以
下、セリウム塩の場合、ＣｅＯ□として１４モル％以下
である。The amount of stabilizer added varies depending on the metal type, and in the case of isotrium salt, it is 3 mol% as Y2O3 based on ZrO□.
Below, in the case of magumushiram salt, 12 mol% as MgO
Hereinafter, in the case of a calcium salt, the content of CaO is 12 mol% or less, and in the case of a cerium salt, the content of CeO□ is 14 mol% or less.
アンモニア水の使用量は、所要量のジルコニラ ム塩の
中和分解により水和酸化物を生成する際のｐｕが、９以
上となるような量および濃度、すなわち、ジルコニウム
塩に対し過剰量に制御される。The amount of ammonia water used is controlled at an amount and concentration such that pu is 9 or more when producing hydrated oxide by neutralizing and decomposing the required amount of zirconium salt, that is, an amount in excess of the zirconium salt. be done.
前記方法で得られた複合沈澱を水洗、乾燥し、仮焼後粉
砕することにより、目的の易焼結性アルミナ・ジルコニ
ア複合粉末が得られる。The composite precipitate obtained by the above method is washed with water, dried, calcined, and then crushed to obtain the desired easily sinterable alumina-zirconia composite powder.
複合沈澱の仮焼は、５００°Ｃ以上１０００℃以下の温
度で行われるが、好ましくは、９００℃程度で約３時間
行う。The composite precipitate is calcined at a temperature of 500°C or more and 1000°C or less, preferably at about 900°C for about 3 hours.
仮焼粉末の粉砕は、通常のボールミリング法で十分であ
る。A normal ball milling method is sufficient for pulverizing the calcined powder.
前記方法で製造された複合粉末を原料として成形、焼結
することにより、容易に高密度アルミナ・ジルコニア焼
結体を製造することができる。By molding and sintering the composite powder produced by the above method as a raw material, a high-density alumina-zirconia sintered body can be easily produced.
複合粉末の成形は、１ｌｌｌ常の金型を使用する加圧成
形で十分であるが、好ましくは、最終焼結体の密度、機
械的強度等の向−にのため、低圧での金型成形後、さら
に静水圧加圧を行・）。Pressure molding using a conventional mold is sufficient for molding the composite powder, but it is preferable to mold the composite powder using a low pressure mold in order to improve the density, mechanical strength, etc. of the final sintered body. After that, perform further hydrostatic pressurization ().
成形体の焼結は、公知の方法のいずれを採用してもよい
が、空気雰囲気下にお目る常圧焼成で十分に目的を達す
ることができる。Although any known method may be used for sintering the molded body, normal pressure firing in an air atmosphere can sufficiently achieve the purpose.
本発明を、実施例を挙げさらに詳細に説明するが、本発
明の範囲は、これら実施例により何等限定されるもので
はない。The present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited in any way by these Examples.
＋１） アルミナ・ジルコニア複合わ】末の製造試料
（１−１〜ｌ−７）
ＺｒＯＣ１□水溶液（または安定化剤を含むＺｒ０Ｃ１
□水溶液）に所定量のα−アルミナ粉末（粒径０．４μ
ｍ１表面積８ｍｇ／ｇ）を添加し、ホールミリングによ
りα−アルミナ粉末をよく分散させた。+1) Production samples of alumina-zirconia composite powder (1-1 to l-7) ZrOC1□ aqueous solution (or Zr0C1 containing a stabilizer)
□ Add a predetermined amount of α-alumina powder (particle size 0.4μ) to aqueous solution).
m1 surface area: 8 mg/g) and the α-alumina powder was well dispersed by hole milling.
この分散液を過剰のアンモニア水中に、ｐＨを９以上に
制御しながら、滴下、攪拌後、生成した沈澱を濾過、水
洗、乾燥しアルミナとジルコニウム化合物との複合沈澱
を得た。This dispersion was added dropwise to excess ammonia water while controlling the pH to 9 or more, and after stirring, the resulting precipitate was filtered, washed with water, and dried to obtain a composite precipitate of alumina and a zirconium compound.
得られた複合沈澱を９００℃で仮焼した後、ボールミリ
ングにより湿式粉砕し、乾燥してアルミナ・ジルコニア
複合粉末（１−１〜１−７）を得た。The obtained composite precipitate was calcined at 900°C, wet-pulverized by ball milling, and dried to obtain alumina-zirconia composite powders (1-1 to 1-7).
試料（２−１〜２〜４）
試料（１−１〜１〜７）の製造に使用したα−アルミナ
粉末と同一の仕様のα−アルミナ粉末をアンモニア水に
添加し、試料（１−１〜１−７）と同様の方法で良く分
散させた。Samples (2-1 to 2 to 4) α-alumina powder with the same specifications as the α-alumina powder used in the production of samples (1-1 to 1 to 7) was added to ammonia water, and sample (1-1 It was well dispersed in the same manner as in ~1-7).
この分散液中に、ｐＨを９以上に調節しながら、Ｚｒ０
ＣＩ□水溶液（または安定化剤を含む水溶液）を滴下、
撹拌し、アルミナとジルコニウム化合物との複合沈澱を
生成させた。Zr0 was added to this dispersion while adjusting the pH to 9 or higher.
Drop a CI□ aqueous solution (or an aqueous solution containing a stabilizer),
The mixture was stirred to form a composite precipitate of alumina and a zirconium compound.
得られた複合沈澱を、試料（１−１〜１−７）と同様に
処理し、アルミナ・ジルコニア複合粉末（２−１〜２−
４）を得た。The obtained composite precipitate was treated in the same manner as samples (1-1 to 1-7), and alumina-zirconia composite powder (2-1 to 2-2-
4) was obtained.
比較試料（比１−１〜比１−３）
前記試料の製造に使用したα−アルミナ粉末と同一の仕
様のα〜アルミナ粉末およびジルコニア粉末（比較され
る実施例のわ）末と同程度の粒径、表面積を有する粉末
）を、ｉｍ常のボールミルを使用して混合し、試料（１
−１）、 （＋−２）および（１−５）と同一の平均組
成を有するアルミナ・ジルコニア混合粉末（比１−１〜
比１−３）を得た。Comparative samples (ratio 1-1 to ratio 1-3) α-alumina powder with the same specifications as the α-alumina powder used in the production of the sample and zirconia powder (of the comparative example) powder having particle size and surface area) were mixed using a conventional ball mill, and the sample (1
-1), (+-2) and (1-5) alumina-zirconia mixed powder (ratio 1-1 to
The ratio 1-3) was obtained.
（２）アルミナ・ジルコニア焼結体の製造前記第（１）
項で得たアルミナ・ジルコニア混合粉末または混合粉末
を原料とし、常法により金型成形した後、さらに２ｔｏ
ｎ／ｃｍ”の圧力で静水圧加圧し成形体を得た。(2) Production of alumina-zirconia sintered body (1) above
Using the alumina-zirconia mixed powder or mixed powder obtained in Section 1 as a raw material, molding was performed using a conventional method, and then 2 to
A molded article was obtained by isostatic pressing at a pressure of "n/cm".
この成形体を所定の焼成温度で３時間焼成し、アルミナ
・ジルコニア焼結体を得た。This compact was fired at a predetermined firing temperature for 3 hours to obtain an alumina-zirconia sintered body.
（３）アルミナ・ジルコニア焼結体の評価前記得られた
アルミナ・ジルコニア焼結体の焼結密度、硬度および曲
げ強度を測定した。(3) Evaluation of alumina-zirconia sintered body The sintered density, hardness and bending strength of the alumina-zirconia sintered body obtained above were measured.
測定結果を、ジルコニアおよび安定化剤の含有量ならび
に焼成温度と共に、第１表に示す。The measurement results are shown in Table 1 along with the contents of zirconia and stabilizer and the firing temperature.
前記実施例示す如く、酸化物粉末の混合法で調製した混
合粉末を原１’ｌとする場合、低温焼成では焼結密度の
低い焼結体しか得られないが、本発明方法で製造した複
合粉末を原料とすることにより、比較的低温域における
常圧焼成で、焼結密度の高い、かつ高強度のアルミナ・
ジルコニア焼結体を得ることができる。As shown in the above example, when the mixed powder prepared by the oxide powder mixing method is used as the raw material, only a sintered body with a low sintered density can be obtained by low-temperature firing, but the composite produced by the method of the present invention By using powder as a raw material, alumina with high sintering density and high strength can be produced by normal pressure firing at relatively low temperatures.
A zirconia sintered body can be obtained.
すなわち、本発明方法で製造した複合粉末を原料として
使用することにより、低温焼結が可能となり、結晶粒の
成長を伴わず焼結体を緻密化することができる。That is, by using the composite powder produced by the method of the present invention as a raw material, low-temperature sintering becomes possible, and the sintered body can be densified without growth of crystal grains.
その結果、強度の安定な、かつ機織的、熱的応力下にお
ける、長門的耐久性の期待できるアルミナ・ジルコニア
焼結体を製造することができる。As a result, it is possible to produce an alumina-zirconia sintered body that has stable strength and can be expected to have Nagato's durability under mechanical and thermal stress.
また、本発明方法で製造した＋５１末を使用することに
より、常圧焼結法を採用することができ、従来採用され
てきたホソ］プレス法、ＨＩ Ｐ法と比較して、低コス
トでアルミナ・ジルコニア焼結体を製造することができ
る。In addition, by using the +51 powder produced by the method of the present invention, it is possible to adopt the pressureless sintering method, which enables the production of alumina at a lower cost compared to the conventionally employed methods such as the Hosopress method and the HIP method. - Zirconia sintered bodies can be manufactured.
本発明は、常圧焼結法で高密度のアルミナ・ジルコニア
焼結体の製造を可能とする、易焼結性の原料粉末の製造
方法を提供するものであり、その産業的意義は極めて大
きい。The present invention provides a method for producing easily sinterable raw material powder that enables the production of high-density alumina-zirconia sintered bodies by pressureless sintering, and its industrial significance is extremely large. .
Claims (6)
とを溶解した液に、アルミナ粉末を分散した分散液から
得られたアルミナとジルコニウム化合物との複合沈澱を
仮焼することを特徴とする易焼結性アルミナ・ジルコニ
ア複合粉末の製造方法(1) Easy sintering characterized by calcining a composite precipitate of alumina and a zirconium compound obtained from a dispersion of alumina powder in a solution of a zirconium salt or a zirconium salt and a stabilizer. Manufacturing method of alumina-zirconia composite powder
ジルコニウム塩またはジルコニウム塩と安定化剤とを溶
解した液にアルミナ粉末を分散した分散液を、アンモニ
ア水中に滴下し、沈澱させて製造する特許請求の範囲第
（１）項記載の方法(2) Composite precipitation of alumina and zirconium compound,
The method according to claim (1), which is produced by dropping a dispersion of alumina powder in a zirconium salt or a solution of a zirconium salt and a stabilizer into aqueous ammonia and causing precipitation.
ジルコニウム塩またはジルコニウム塩と安定化剤とを溶
解した液を、アルミナ粉末を分散したアンモニア水中に
滴下し、沈澱させて製造する特許請求の範囲第（１）項
記載の方法(3) Composite precipitation of alumina and zirconium compound,
The method according to claim (1), which is produced by dropping a zirconium salt or a solution of a zirconium salt and a stabilizer into ammonia water in which alumina powder is dispersed, and causing precipitation.
、オキシ酢酸塩およびオキシ硫酸塩よりなる群から選ば
れた少なくとも１種の水溶性塩である特許請求の範囲第
（１）項、第（２）項または第（３）項記載の方法(4) Claims (1) and (2) wherein the zirconium salt is at least one water-soluble salt selected from the group consisting of oxychloride, oxynitrate, oxyacetate, and oxysulfate. ) or the method described in paragraph (3)
カルシウム塩およびセリウム塩よりなる群から選ばれた
少なくとも１種の水溶性塩である特許請求の範囲第（１
）項、第（２）項または第（３）項記載の方法(5) The stabilizer is an isotrium salt, a magnesium salt,
Claim No. 1, which is at least one water-soluble salt selected from the group consisting of calcium salts and cerium salts.
), the method described in paragraph (2) or paragraph (3)
それぞれをＺｒＯ＿２およびＡｌ＿２Ｏ＿３に換算して
、ＺｒＯ＿２：１〜９０モル％である特許請求の範囲第
（１）項、第（２）項または第（３）項記載の方法（７
）アルミナ粉末が、結晶子径１．０μｍ以下、ＢＥＴ比
表面積５ｍ＾２／ｇ以上であるα−アルミナ粉末または
仮焼により該α−アルミナを生成する前駆体粉末である
特許請求の範囲第（１）項、第（２）項または第（３）
項記載の方法(6) The composite ratio of zirconium salt and alumina powder is
The method (7) according to claim (1), (2) or (3), wherein ZrO_2: 1 to 90 mol%, respectively, converted to ZrO_2 and Al_2O_3.
) The alumina powder is an α-alumina powder having a crystallite diameter of 1.0 μm or less and a BET specific surface area of 5 m^2/g or more, or a precursor powder that produces the α-alumina by calcination. Paragraph 1), Paragraph (2) or Paragraph (3)
Method described in section
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60210710A JPS6291419A (en) | 1985-09-24 | 1985-09-24 | Production of easy-to-sinter composite powder of alumina and zirconia |
| CA000517390A CA1259080A (en) | 1985-09-06 | 1986-09-03 | High density alumina zirconia ceramics and a process for production thereof |
| US07/052,858 US4772576A (en) | 1985-09-06 | 1986-09-04 | High density alumina zirconia ceramics and a process for production thereof |
| DE8686905404T DE3683283D1 (en) | 1985-09-06 | 1986-09-04 | HIGH-DENSITY SINTERING MATERIAL FROM CLOON CLAY EARTH AND METHOD FOR THE PRODUCTION THEREOF. |
| AU62889/86A AU591928B2 (en) | 1985-09-06 | 1986-09-04 | High density alumina zirconia ceramics and a process for production thereof |
| EP86905404A EP0236507B1 (en) | 1985-09-06 | 1986-09-04 | High-density alumina-zirconia sinter and process for its production |
| PCT/JP1986/000449 WO1987001369A1 (en) | 1985-09-06 | 1986-09-04 | High-density alumina-zirconia sinter and process fro its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60210710A JPS6291419A (en) | 1985-09-24 | 1985-09-24 | Production of easy-to-sinter composite powder of alumina and zirconia |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6291419A true JPS6291419A (en) | 1987-04-25 |
| JPH0475166B2 JPH0475166B2 (en) | 1992-11-30 |
Family
ID=16593817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60210710A Granted JPS6291419A (en) | 1985-09-06 | 1985-09-24 | Production of easy-to-sinter composite powder of alumina and zirconia |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6291419A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006160578A (en) * | 2004-12-09 | 2006-06-22 | Toyota Central Res & Dev Lab Inc | Composite oxide and catalyst for cleaning exhaust gas |
| JP2008081325A (en) * | 2006-09-25 | 2008-04-10 | Tosoh Corp | Zirconia fine powder and its manufacturing method |
| JP2013500231A (en) * | 2009-07-27 | 2013-01-07 | コンセホ スペリオール デ インベスティガシオネス シエンティフィカス（セエセイセ） | Nanostructured composite material of cerium oxide stabilized zirconia and zirconia doped alumina, method of use, and method of manufacture thereof |
-
1985
- 1985-09-24 JP JP60210710A patent/JPS6291419A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006160578A (en) * | 2004-12-09 | 2006-06-22 | Toyota Central Res & Dev Lab Inc | Composite oxide and catalyst for cleaning exhaust gas |
| JP4677779B2 (en) * | 2004-12-09 | 2011-04-27 | 株式会社豊田中央研究所 | Composite oxide and exhaust gas purification catalyst |
| JP2008081325A (en) * | 2006-09-25 | 2008-04-10 | Tosoh Corp | Zirconia fine powder and its manufacturing method |
| JP2013500231A (en) * | 2009-07-27 | 2013-01-07 | コンセホ スペリオール デ インベスティガシオネス シエンティフィカス（セエセイセ） | Nanostructured composite material of cerium oxide stabilized zirconia and zirconia doped alumina, method of use, and method of manufacture thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0475166B2 (en) | 1992-11-30 |
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