JPH031245B2 - - Google Patents

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Publication number
JPH031245B2
JPH031245B2 JP61103185A JP10318586A JPH031245B2 JP H031245 B2 JPH031245 B2 JP H031245B2 JP 61103185 A JP61103185 A JP 61103185A JP 10318586 A JP10318586 A JP 10318586A JP H031245 B2 JPH031245 B2 JP H031245B2
Authority
JP
Japan
Prior art keywords
temperature
alumina
zirconia
powder
zirconium oxychloride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP61103185A
Other languages
English (en)
Other versions
JPS62260718A (ja
Inventor
Shigeyuki Somya
Masahiro Yoshimura
Zenjiro Nakai
Kazumichi Hishinuma
Takao Kumaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chichibu Semento Kk
Original Assignee
Chichibu Semento Kk
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chichibu Semento Kk filed Critical Chichibu Semento Kk
Priority to JP61103185A priority Critical patent/JPS62260718A/ja
Priority to US07/045,564 priority patent/US4769351A/en
Priority to DE3714911A priority patent/DE3714911C2/de
Publication of JPS62260718A publication Critical patent/JPS62260718A/ja
Publication of JPH031245B2 publication Critical patent/JPH031245B2/ja
Granted legal-status Critical Current

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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/34—Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
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  • Structural Engineering (AREA)
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  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
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  • Inorganic Compounds Of Heavy Metals (AREA)

Description

【発明の詳細な説明】
〔産業上の利用分野〕 本発明は高純度ジルコアニア−アルミナ系超微
粉末の製造方法に関するものである。 〔従来技術とその問題点〕 ジルコアニア−アルミナ系セラミツクスにおい
て、アルミナをマトリツクスとしジルコニアを分
散したものは、アルミナの靭性強化アルミナ
（ZTA）と呼ばれ、従来のアルミナセラミツクス
比較して高靭性であるため、切除工具および機械
材料として利用されている。 そして部分安定化ジルコニア（PSZ）または正
方晶ジルコニア（TZP）をマトリツクスとしア
ルミナを分散したアルミナ分散ジルコニア
（ATZ）は、高靭性ジルコニアセラミツクスの軽
量化、高硬度化およびコストの低滅を目的とした
ものである。 従来ジルコニア−アルミナ系粉末の製造方法と
して、ボールミルなどにより機械的に混合する方
法がなされてきたが、焼結性に優れたサブミクロ
ンオーダーの各微粉末をこの方法で均一に混合す
ることは極めて困難である。またジルコニウムお
よびアルミニウム成分を含む溶液から中和共沈法
により混合沈澱物を得て、仮焼および微粉砕する
方法もあるが、沈澱剤として使用するアンモニア
の濃度が局所的に異なり、また沈澱条件が初期と
後期で異なるために混合沈澱物の組成が変動す
る。そのため操作条件の微妙な違いで沈澱の性状
が大きく変化するという問題がある。 最近、均一性の高いジルコニア−アルミナ系微
粉末の製造方法として、水熱酸化法、気相反応
法、プラズマ法が報告されている。しかし乍らこ
れらの方法は、製造装置が高価でコストに問題が
あつたり、生産性に多くの問題がある。 〔発明が解決しようとする課題〕 本発明は、設備コストが低く、しかも高靭性の
セラミツクスが得られる高純度ジルコア−アルミ
ナ系超微粉末を得るための製造方法を提供するこ
とを課題とするものである。 〔課題を解決するための手段〕 本発明者等の研究グループは、先に特開昭60−
103033号公報に開示される水熱法によるジルコニ
ア系超微粉末製造方法を開発し、ジルコニア系超
微粉末を得ることに成功した。 そこで、このジルコニア系超微粉末を用いたジ
ルコニア−アルミナ系セラミツクスの製造を従来
法により試みたのであるが、期待する高靭性のも
のを得ることができなかつた。 第１表の試料No.１は特開昭60−103033号公報に
開示される方法で作つたジルコニア系超微粉末の
焼結体であり、試料No.２はジルコニア−アルミナ
系粉末を得る場合、従来一般に行なわれている湿
式ボールミルによる混合方法によつて作られたも
ので、ジルコニア系粉末としては試料No.１のもの
を使用し、それにアルミナを混合させたものを焼
結したものである。 この場合、試料No.２の組成の焼結体は試料No.１
の組成の焼結体よりも硬度及び曲げ強度について
は若干の向上が見られるが、破壊靭性値は反つて
低下し、所期の高靭性のジルコニア−アルミナ系
焼結体を得ることができなかつた。
〔発明の効果〕
以上のように本発明によれば従来法に比して安
価に得ることができ、しかも本発明による粉末を
用いた焼結体は、ジルコニアがアルミナ中にナノ
メートルオーダーで分散したナノコンポジツト構
造であるため、所期の高靭性の焼結体が得られる
もので、工業的に価値あるものである。
【図面の簡単な説明】
第１図は実施例１、２、３の反応生成物のＸ線
回折図、第２図ａは実施例１により得た粉末の焼
結体のSEM写真、第２図ｂはそのTEM写真であ
る。

Claims (1)

  1. 【特許請求の範囲】 １ オキン塩化ジルコニウム水溶液、またはオキ
    シ塩化ジルコニウム水溶液に安定化剤としての金
    属塩を添加したものに、アルミニウム塩またはア
    ルミナ水和物を溶解または懸濁させ、さらに尿素
    または加水分解によりアンモニアを発生しうる物
    質を混合し、高温高圧容器内で温度140℃〜300
    ℃、圧力４〜150Kg／cm2で反応させることを特徴
    とするジルコニアーアルミナ系超微粉末スリラー
    の製造方法。 ２ オキシ塩化ジルコニウム水溶液、またはオキ
    シ塩化ジルコニウム水溶液に安定化剤としての金
    属塩を添加したものに、アルミニウム塩またはア
    ルミナ水和物を溶解または懸濁させ、さらに尿素
    または加水分解によりアンモニアを発生しうる物
    質を混合し、高温高圧容器内で温度140℃〜300
    ℃、圧力４〜150Kg／cm2で反応させた後、脱水乾
    燥し、それを仮焼、解砕することを特徴とするジ
    ルコニア−アルミナ系超微粉末の製造方法。
JP61103185A 1986-05-06 1986-05-06 水熱法による高純度ジルコニア−アルミナ系超微粉末の製造方法 Granted JPS62260718A (ja)

Priority Applications (3)

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JP61103185A JPS62260718A (ja) 1986-05-06 1986-05-06 水熱法による高純度ジルコニア−アルミナ系超微粉末の製造方法
US07/045,564 US4769351A (en) 1986-05-06 1987-05-04 Hydrothermal process for preparing zirconia-alumina base ultra-fine powders of high purity
DE3714911A DE3714911C2 (de) 1986-05-06 1987-05-05 Verfahren zum Herstellen einer Aufschlämmung eines ultrafeinen Pulvers auf Zirkoniumoxid-Aluminiumoxid-Basis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61103185A JPS62260718A (ja) 1986-05-06 1986-05-06 水熱法による高純度ジルコニア−アルミナ系超微粉末の製造方法

Publications (2)

Publication Number Publication Date
JPS62260718A JPS62260718A (ja) 1987-11-13
JPH031245B2 true JPH031245B2 (ja) 1991-01-10

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Country Status (3)

Country Link
US (1) US4769351A (ja)
JP (1) JPS62260718A (ja)
DE (1) DE3714911C2 (ja)

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Also Published As

Publication number Publication date
US4769351A (en) 1988-09-06
JPS62260718A (ja) 1987-11-13
DE3714911A1 (de) 1987-11-19
DE3714911C2 (de) 1994-08-25

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