JPH0639303A - Material of part for crushing using sintered body of zirconia - Google Patents
Material of part for crushing using sintered body of zirconiaInfo
- Publication number
- JPH0639303A JPH0639303A JP5063733A JP6373393A JPH0639303A JP H0639303 A JPH0639303 A JP H0639303A JP 5063733 A JP5063733 A JP 5063733A JP 6373393 A JP6373393 A JP 6373393A JP H0639303 A JPH0639303 A JP H0639303A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- crushing
- zro
- stabilized
- tetragonal
- 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)
- Crushing And Grinding (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はイッテルビア（Ｙｂ2 Ｏ
3 ），エルビア（Ｅｒ2 Ｏ3 ）及びホルミア（Ｈｏ2 Ｏ
3 ）の１種又は２種以上で安定化されたジルコニア（Ｚ
ｒＯ2 ）焼結体を用いた粉砕用部品材料に係り、特に、
乾式又は湿式でセラミックス、金属、有機高分子などの
粒子を微粉砕する粉砕装置に使用される内張材、メディ
アなどに有効な、高強度、高耐摩耗性を備える、Ｙｂ2
Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 の１種又は２種以上で
安定化されたＺｒＯ2 焼結体を用いた粉砕用部品材料に
関する。The present invention relates to ytterbia (Yb 2 O).
3 ), Erbia (Er 2 O 3 ) and Holmia (Ho 2 O)
3 ) Stabilized with one or more of zirconia (Z
rO 2 ) Relating to a crushing part material using a sintered body,
Yb 2 which has high strength and high wear resistance, which is effective for lining materials and media used in a crushing device for finely crushing particles of ceramics, metals, organic polymers, etc. by dry or wet method.
The present invention relates to a crushing component material using a ZrO 2 sintered body that is stabilized with one or more of O 3 , Er 2 O 3 and Ho 2 O 3 .
【０００２】[0002]
【従来の技術】現在、セラミックス粉体などの微粉砕装
置としてはボールミル、サンドミル、アトライター、振
動ミル、ジェットミル、ローラーミルなど、各種の装置
が広く使用されている。従来、これらの装置の内張材、
メディアなどの摩耗しやすい部材の構成材料には、粉砕
すべき物質の種類に応じて磁器、アルミナ、ガラス、ゴ
ム、プラスチック、めのうなどが多く使用されてきた。2. Description of the Related Art At present, various devices such as a ball mill, a sand mill, an attritor, a vibration mill, a jet mill and a roller mill are widely used as a fine pulverizing device for ceramic powder. Conventionally, lining materials for these devices,
Porcelain, alumina, glass, rubber, plastic, agate, and the like have been often used as the constituent material of the easily abrading member such as media depending on the type of substance to be crushed.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来の材
料は、一般に摩耗し易く、粉砕物中に摩耗粉が混入する
ことが多く、純度が製品の特性を左右する電子セラミッ
クスなどへの利用には問題がある。However, the above-mentioned conventional materials are generally prone to wear and wear powder is often mixed in the pulverized product, so that the purity is suitable for use in electronic ceramics and the like whose characteristics affect the product. Has a problem.
【０００４】この問題を解決するために、Ｙ2 Ｏ3 で安
定化されたＺｒＯ2 焼結体からなる粉砕用部品材料が提
案されているが（公告平２−２０５８７）、未だ強度や
耐摩耗性の面に若干の問題が残されている上に、粉砕能
力の大きな要因の１つとなるメディアの嵩密度（Ｙ2 Ｏ
3 −ＺｒＯ2 で５．８ｇ／ｃｍ3 以上）についても、な
お更に大きくする必要があるという問題がある。In order to solve this problem, a crushing part material composed of a Y 2 O 3 -stabilized ZrO 2 sintered body has been proposed (Publication No. 2-20587), but the strength and the wear resistance are still present. In addition to some problems in terms of properties, the bulk density of the media (Y 2 O
3 -ZrO 2 5.8 g / cm 3 or more), there is a problem that it is necessary to further increase.
【０００５】本発明は上記従来の問題点を解決し、強
度、耐摩耗性等において著しく優れた特性を有し、しか
も、適当な嵩密度を有するＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及び
Ｈｏ2Ｏ3 の１種又は２種以上で安定化されたＺｒＯ2
焼結体を用いた粉砕用部品材料を提供することを目的と
する。The present invention solves the above-mentioned problems of the prior art, has excellent properties such as strength and wear resistance, and has an appropriate bulk density of Yb 2 O 3 , Er 2 O 3 and Ho 2. ZrO 2 stabilized with one or more of O 3
An object is to provide a crushing part material using a sintered body.
【０００６】[0006]
【課題を解決するための手段】本発明のＹｂ2 Ｏ3 ，Ｅ
ｒ2 Ｏ3 及びＨｏ2 Ｏ3 の１種又は２種以上で安定化さ
れたＺｒＯ2 焼結体を用いた粉砕用部品材料は、主安定
化剤としてＹｂ2 Ｏ3，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 より
なる群から選ばれる１種又は２種以上を合量で２〜６モ
ル％含有するＺｒＯ2 を主成分とする焼結体を用いて構
成された粉砕用部品材料であって、該焼結体の結晶粒子
が主に正方晶の相或いは正方晶及び立方晶の混合相より
なり、該結晶の平均結晶粒子径が３μｍ以下であり、か
つ、該焼結体の嵩密度が６．０ｇ／ｃｍ3 以上であるこ
とを特徴とする。[Means for Solving the Problems] Yb 2 O 3 , E of the present invention
The crushing component material using the ZrO 2 sintered body stabilized with one or more of r 2 O 3 and Ho 2 O 3 has Yb 2 O 3 , Er 2 O 3 and A crushing part material constituted by using a sintered body containing ZrO 2 as a main component, which contains 2 to 6 mol% of a total of 1 or 2 or more selected from the group consisting of Ho 2 O 3. The crystal particles of the sintered body are mainly composed of a tetragonal phase or a mixed phase of tetragonal and cubic crystals, the average crystal particle diameter of the crystal is 3 μm or less, and the bulk density of the sintered body is It is characterized by being 6.0 g / cm 3 or more.
【０００７】以下に本発明を詳細に説明する。なお、以
下において、「Ｙｂ2 Ｏ3 ，Ｅｒ2Ｏ3 及びＨｏ2 Ｏ3
よりなる群から選ばれる１種又は２種以上」は、単に
「Ｙｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 」と記す。The present invention will be described in detail below. In the following, "Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3
One or more selected from the group consisting of "is simply referred to as" Yb 2 O 3, Er 2 O 3 and Ho 2 O 3 ".
【０００８】本発明に係るＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及び
Ｈｏ2 Ｏ3 で安定化されたＺｒＯ2焼結体は以下のよう
な条件を満足するものである。即ち、まず、主安定化剤
であるＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 の含有量
は、合計で２〜６モル％であり、焼結体の結晶粒子は主
に正方晶の相或いは正方晶及び立方晶の混合相よりな
る。正方晶の結晶粒子、或いは、正方晶の結晶粒子と立
方晶の結晶粒子とよりなるＺｒＯ2 焼結体は、２００〜
３００℃の温度域における強度の経時変化が極めて少な
く、かつ、室温〜８００℃の温度域での加熱冷却による
寸法変化が殆どないものであるが、Ｙｂ2 Ｏ3 ，Ｅｒ2
Ｏ3 及びＨｏ2 Ｏ3 が合計で２モル％未満では単斜晶の
結晶粒子が生成し易く、また、６モル％以上では正方晶
の結晶粒子を殆ど含まない立方晶の結晶粒子の焼結体に
なるため、Ｙｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 の含
有量は合計で２〜６モル％とする。このＹｂ2 Ｏ3 ，Ｅ
ｒ2 Ｏ3 及びＨｏ2 Ｏ3 の合計含有量２〜６モル％のＹ
ｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 安定化ＺｒＯ2 焼
結体は、高強度、高靭性、高耐摩耗性を示すことからも
有効である。The Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 stabilized ZrO 2 sintered body according to the present invention satisfies the following conditions. That is, first, the total content of the main stabilizers Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 is 2 to 6 mol%, and the crystal grains of the sintered body are mainly tetragonal. Or a mixed phase of tetragonal and cubic. A tetragonal crystal grain or a ZrO 2 sintered body composed of a tetragonal crystal grain and a cubic crystal grain has a particle size of 200 to
The change in strength with time in the temperature range of 300 ° C. is extremely small, and there is almost no dimensional change due to heating and cooling in the temperature range of room temperature to 800 ° C., but Yb 2 O 3 , Er 2
If the total amount of O 3 and Ho 2 O 3 is less than 2 mol%, monoclinic crystal particles are likely to be formed, and if it is 6 mol% or more, cubic crystal particles containing almost no tetragonal crystal particles are sintered. Since it becomes a body, the total content of Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 is 2 to 6 mol%. This Yb 2 O 3 , E
Y with a total content of r 2 O 3 and Ho 2 O 3 of 2 to 6 mol%.
The b 2 O 3 , Er 2 O 3 and Ho 2 O 3 stabilized ZrO 2 sintered bodies are also effective because they exhibit high strength, high toughness and high wear resistance.
【０００９】上記の如く、Ｙｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及び
Ｈｏ2 Ｏ3 安定化ＺｒＯ2 焼結体の結晶相は、正方晶の
相、或いは、正方晶と立方晶との混合相よりなることが
重要である。焼結過程においてＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3
及びＨｏ2 Ｏ3 安定化ＺｒＯ2 焼結体中に単斜晶の相が
生成する場合には、転移による大きな体積変化を伴うの
で、焼結体中に亀裂が生じるため強度が不十分になる。
焼結体中の結晶相の含有量は、以下のようなＸ線回折結
晶定量法により求めることができる。まず、焼結体表面
を６００メッシュのダイヤモンド砥石で研削した後、１
〜５μｍのダイヤモンド粒により鏡面に仕上げ、その表
面のＸ線回折による強度比より以下の式で単斜晶Ｍ0 の
量を求める。As described above, the crystal phase of the Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 stabilized ZrO 2 sintered body is a tetragonal phase or a mixed phase of tetragonal and cubic. Is important. In the sintering process, Yb 2 O 3 , Er 2 O 3
When a monoclinic phase is formed in a sintered body of ZrO 2 and Ho 2 O 3 stabilized, a large volume change is caused by the transition, and a crack is generated in the sintered body, resulting in insufficient strength. .
The content of the crystal phase in the sintered body can be determined by the following X-ray diffraction crystal quantification method. First, after grinding the surface of the sintered body with a 600 mesh diamond grindstone, 1
The amount of monoclinic crystal M 0 is determined by the following formula from the intensity ratio by X-ray diffraction of the surface finished with diamond grains of ˜5 μm.
【００１０】[0010]
【数１】 [Equation 1]
【００１１】Ｙｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 安
定化ＺｒＯ2 焼結体を構成する結晶の平均結晶粒子径は
３μｍ以下とする。この平均結晶粒子径が３μｍを超え
ると、２００〜３００℃の温度域での放置テスト又は焼
結後の冷却過程でも、過剰な単斜晶の生成による微細な
クラックのため、強度の急激な低下が認められる。平均
結晶粒子径が２μｍ以下であると、２００〜３００℃の
温度域での放置テストにおいても結晶相は殆ど変化せ
ず、正方晶が安定に維持されるので、特に好ましい。The average crystal grain size of the crystals constituting the Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 stabilized ZrO 2 sintered body is 3 μm or less. If this average crystal grain size exceeds 3 μm, even during the standing test in the temperature range of 200 to 300 ° C. or the cooling process after sintering, fine cracks due to excessive monoclinic crystal formation cause a sharp decrease in strength. Is recognized. It is particularly preferable that the average crystal grain size is 2 μm or less because the crystal phase hardly changes even in the standing test in the temperature range of 200 to 300 ° C. and the tetragonal crystal is stably maintained.
【００１２】なお、平均結晶粒子径の測定は、以下の方
法で行なう。ＺｒＯ2 焼結体の鏡面研磨面をフッ化水素
酸でエッチング処理したものの電子顕微鏡写真で、粒子
を５０個以上含むような一定面積Ｓ内にある粒子数ｎを
数え、粒子１個当りの平均面積Ｓに等しい面積の円の直
径ｄを、式ｄ＝（４Ｓ／π）1/2 により計算する。そし
て、ｄを同一試料の３ケ所以上の視野について求め、そ
の平均値を平均結晶粒子径とする。粒子数ｎは、一定面
積Ｓに完全に含まれる粒子の数と一定面積の境界線で切
られる粒子の数の１／２との和とする（測定法について
は、公告昭６１−２１１８４参照。）。The average crystal grain size is measured by the following method. An electron micrograph of a mirror-polished surface of a ZrO 2 sintered body that was etched with hydrofluoric acid. The number n of particles within a certain area S containing 50 or more particles was counted, and the average per particle was calculated. The diameter d of a circle having an area equal to the area S is calculated by the formula d = (4S / π) 1/2 . Then, d is obtained for three or more visual fields of the same sample, and the average value is taken as the average crystal grain size. The number n of particles is the sum of the number of particles completely contained in the constant area S and 1/2 of the number of particles cut by the boundary line of the constant area (for the measuring method, refer to Publication No. 61-21184). ).
【００１３】また、本発明に係るＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ
3 及びＨｏ2 Ｏ3 安定化ＺｒＯ2 焼結体の嵩密度は６．
０ｇ／ｃｍ3 以上とする。焼結体の嵩密度を少しでも大
きくすることは、メディアとした場合の粉砕能力の向上
に有効である。嵩密度は特に６．２ｇ／ｃｍ3 以上であ
ることが好ましい。Further, according to the present invention, Yb 2 O 3 and Er 2 O
3 and Ho 2 O 3 stabilized ZrO 2 sintered body has a bulk density of 6.
It should be 0 g / cm 3 or more. Increasing the bulk density of the sintered body as much as possible is effective in improving the crushing ability when used as a medium. The bulk density is particularly preferably 6.2 g / cm 3 or more.
【００１４】[0014]
【作用】本発明は、従来の問題点を解決すべく、ＺｒＯ
2 焼結体の安定化剤としてＹ2Ｏ3 の代わりにＹｂ2 Ｏ3
，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 を用いるものであって、
本発明で規定されるＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2
Ｏ3 含有量、結晶構成相、平均結晶粒子径、嵩密度を満
足するＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 安定化Ｚ
ｒＯ2 焼結体は、従来のＹ2 Ｏ3 安定化ＺｒＯ2 焼結体
に比較して強度、耐摩耗性、粉砕能力等の点において著
しく優れている。In order to solve the conventional problems, the present invention uses ZrO.
2 Yb 2 O 3 instead of Y 2 O 3 as a stabilizer for the sintered body
, Er 2 O 3 and Ho 2 O 3 are used,
Yb 2 O 3 , Er 2 O 3 and Ho 2 defined in the present invention
Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 stabilized Z satisfying O 3 content, crystal constitution phase, average crystal particle size and bulk density
The rO 2 sintered body is significantly superior to the conventional Y 2 O 3 stabilized ZrO 2 sintered body in terms of strength, wear resistance, crushing ability and the like.
【００１５】即ち、結晶粒子が主に正方晶の相或いは正
方晶及び立方晶の混合相よりなるＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ
3 及びＨｏ2 Ｏ3 安定化ＺｒＯ2 焼結体は、２００〜３
００℃の温度域における強度の経時変化が極めて少な
く、かつ、室温〜８００℃の温度域での加熱冷却による
寸法変化が殆どない。しかして、このような結晶相は、
Ｙｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 含有量２〜６モ
ル％において実現される。また、Ｙｂ2 Ｏ3 ，Ｅｒ2 Ｏ
3 及びＨｏ2 Ｏ3 含有量２〜６モル％の領域であれば、
高強度、高靭性、高耐摩耗性のＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3
及びＨｏ2 Ｏ3 安定化ＺｒＯ2 焼結体となる。That is, Yb 2 O 3 , Er 2 O whose crystal grains are mainly composed of a tetragonal phase or a mixed phase of tetragonal and cubic crystals.
3 and Ho 2 O 3 stabilized ZrO 2 sintered body is 200 to 3
There is very little change in strength with time in the temperature range of 00 ° C, and there is almost no dimensional change due to heating and cooling in the temperature range of room temperature to 800 ° C. Then, such a crystal phase
It is realized at Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 contents of 2 to 6 mol%. In addition, Yb 2 O 3 , Er 2 O
3 and Ho 2 O 3 content in the range of 2 to 6 mol%,
High strength, high toughness and high wear resistance Yb 2 O 3 , Er 2 O 3
And a Ho 2 O 3 stabilized ZrO 2 sintered body.
【００１６】Ｙｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 安
定化ＺｒＯ2 焼結体を構成する結晶の平均結晶粒子径が
３μｍ以下であれば、高強度焼結体となる。また、Ｙｂ
2 Ｏ3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 安定化ＺｒＯ2 焼結
体の嵩密度が６．０ｇ／ｃｍ3 以上であれば、粉砕能力
の高いものとなる。If the average crystal grain size of the crystals constituting the Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 stabilized ZrO 2 sintered body is 3 μm or less, a high strength sintered body is obtained. Also, Yb
If the bulk density of the 2 O 3 , Er 2 O 3 and Ho 2 O 3 stabilized ZrO 2 sintered body is 6.0 g / cm 3 or more, the pulverizing ability will be high.
【００１７】[0017]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。なお、以下の実施例及び比較例で
使用したＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 ，Ｈｏ2 Ｏ3 又はＹ2
Ｏ3 含有ＺｒＯ2 粉末は、共沈法と呼ばれる化学湿式法
で調製した。即ち、ＺｒＯＣｌ2 ・８Ｈ2 Ｏ水溶液とＹ
ｂＣｌ3 ，ＥｒＣｌ3 ，ＨｏＣｌ3 又はＹＣｌ3 水溶液
とを均一混合した後、加水分解によりＺｒ及びＹｂ又は
Ｙの混合化学物質を沈殿させ、脱水及び乾燥する。その
混合物を８００〜１２００℃で仮焼した後、ボールミル
などで湿式解砕を行ない、乾燥して、Ｙｂ2 Ｏ3 含有Ｚ
ｒＯ2 粉末，Ｅｒ2 Ｏ3 含有ＺｒＯ2 粉末，Ｈｏ2 Ｏ3
含有ＺｒＯ2 粉末又はＹ2 Ｏ3 含有ＺｒＯ2 粉末とし
た。EXAMPLES The present invention will be described more specifically with reference to Examples and Comparative Examples below. In addition, Yb 2 O 3 , Er 2 O 3 , Ho 2 O 3 or Y 2 used in the following examples and comparative examples.
The O 3 -containing ZrO 2 powder was prepared by a chemical wet method called a coprecipitation method. That is, ZrOCl 2 · 8H 2 O aqueous solution and Y
bCl 3, ErCl 3, HoCl 3 or YCl 3 after the aqueous solution was uniformly mixed, to precipitate the mixed chemicals Zr and Yb or Y by hydrolysis, dehydrating and drying. The mixture is calcined at 800 to 1200 ° C., then wet crushed with a ball mill or the like, dried, and Yb 2 O 3 -containing Z is added.
rO 2 powder, Er 2 O 3 -containing ZrO 2 powder, Ho 2 O 3
It was contained ZrO 2 powder or Y 2 O 3 containing ZrO 2 powder.
【００１８】実施例１〜１５、比較例１，２ 表１に示す割合でＹｂ2 Ｏ3 ，Ｅｒ2 Ｏ3 ，Ｈｏ2 Ｏ3
又はＹ2 Ｏ3 を含有するＺｒＯ2 粉末に、ポリビニルア
ルコールを添加した後、スプレー造粒した。この造粒粉
を用いて、焼成後寸法がφ８ｍｍのボールになるように
一軸成形し、更に１ｔ／ｃｍ2 でＣＩＰ成形し、得られ
た成形体を焼成して摩耗テスト用試料を作製した。別
に、造粒粉を１ｔ／ｃｍ2 でＣＩＰ成形し、得られた成
形体を焼成して、他のテスト用試料を作製した。焼成
は、いずれも１３００〜１５００℃の温度域で最も密度
の上がる焼成温度にて２時間行なった。得られた焼結体
の物性及び特性テスト結果を表１に示す。Examples 1 to 15 and Comparative Examples 1 and 2 Yb 2 O 3 , Er 2 O 3 and Ho 2 O 3 in the proportions shown in Table 1.
Alternatively, polyvinyl alcohol was added to ZrO 2 powder containing Y 2 O 3 and then spray granulated. This granulated powder was uniaxially molded into a ball having a size of φ8 mm after firing, further CIP-molded at 1 t / cm 2 , and the resulting molded body was fired to prepare a sample for wear test. Separately, the granulated powder was CIP molded at 1 t / cm 2 , and the obtained molded body was fired to prepare another test sample. The firing was carried out for 2 hours at a firing temperature with the highest density in the temperature range of 1300 to 1500 ° C. Table 1 shows the physical properties and characteristic test results of the obtained sintered body.
【００１９】なお、３点曲げ強度は、４ｍｍ×３ｍｍ×
３６ｍｍ寸法の試験片について、ファインセラミックス
の曲げ強さ試験方法（ＪＩＳ Ｒ１６０１）、ビッカー
ス硬さはＪＩＳ Ｒ１６１０、破壊靭性はＪＩＳ Ｒ１
６０７に従って測定した。また、摩耗量は、遊星型ボー
ルミルを用い、ＺｒＯ2 ポットにテストボール（φ８ｍ
ｍ）５０ｇと水１００ｍｌとを投入し、回転数２００
ｒ．ｐ．ｍ．で４８時間回転させ、テスト前後の重量減
少を測定することにより求めた。The three-point bending strength is 4 mm × 3 mm ×
For a test piece of 36 mm size, the bending strength test method of fine ceramics (JIS R1601), Vickers hardness is JIS R1610, fracture toughness is JIS R1.
It was measured according to 607. Further, the wear amount, using a planetary ball mill, a test ball (Fai8m the ZrO 2 pot
m) Charge 50 g and 100 ml of water, and rotate at 200
r. p. m. It was determined by measuring the weight loss before and after the test after rotating for 48 hours.
【００２０】[0020]
【表１】 [Table 1]
【００２１】表１の結果より、Ｙｂ2 Ｏ3 安定化ＺｒＯ
2 焼結体がＹ2 Ｏ3 安定化ＺｒＯ2焼結体より勝る特性
であることが明らかである。摩耗量については、一見大
差がないように思えるが、嵩密度の差を考えるとＹｂ2
Ｏ3 安定化ＺｒＯ2 焼結体が格段に優れている。また、
Ｅｒ2 Ｏ3 安定化ＺｒＯ2 焼結体及びＨｏ2 Ｏ3 安定化
ＺｒＯ2 焼結体の各特性は、Ｙｂ2 Ｏ3 安定化ＺｒＯ2
焼結体と同等レベルであった。From the results shown in Table 1, Yb 2 O 3 stabilized ZrO
It is clear that 2 sintered body is a characteristic that outweigh Y 2 O 3 stabilized ZrO 2 sintered body. It seems that there is no great difference in the amount of wear, but when considering the difference in bulk density, Yb 2
The O 3 stabilized ZrO 2 sintered body is remarkably excellent. Also,
The characteristics of the Er 2 O 3 stabilized ZrO 2 sintered body and the Ho 2 O 3 stabilized ZrO 2 sintered body are as follows: Yb 2 O 3 stabilized ZrO 2
It was at the same level as the sintered body.
【００２２】なお、比較例として、Ｙ2 Ｏ3 ２．６モル
％安定化品以外にＹ2 Ｏ3 ３モル％安定化品を選んだ理
由は、次の通りである。即ち、表１の結果や従来のＹ2
Ｏ3安定化ＺｒＯ2 焼結体のデータより、２．６モル％
安定化品の特性が優れているのであるが、この安定化品
は２００〜３００℃での放置テストでの特性劣化が若干
認められる。このため、特性劣化が少なく、特性も２．
６モル％安定化品に近い３モル％安定化品も比較例とし
た。The reason why the Y 2 O 3 3 mol% stabilized product other than the Y 2 O 3 2.6 mol% stabilized product was selected as a comparative example is as follows. That is, the results of Table 1 and the conventional Y 2
From the data of O 3 stabilized ZrO 2 sintered body, 2.6 mol%
Although the characteristics of the stabilized product are excellent, some deterioration of the characteristics is observed in this stabilized product in the standing test at 200 to 300 ° C. Therefore, the characteristics are less deteriorated and the characteristics are 2.
A 3 mol% stabilized product close to a 6 mol% stabilized product was also set as a comparative example.
【００２３】実施例１６、比較例３ 実施例２及び比較例１で摩耗テスト用に作製したボール
（φ８ｍｍ）を用いて、粉砕能力の比較実験を行なっ
た。即ち、樹脂ライニングボール・ミル（２リットル）
にテストボール（φ８ｍｍ）３．６ｋｇ、アルミナ粉
（昭和電工（株）製「ＲＷ−９２」３２５メッシュ）１
ｋｇ、水８００ｍｌを投入し、回転数１００ｒ．ｐ．
ｍ．で２４時間という条件でそれぞれテストを行なっ
た。このテストにより粉砕されたアルミナ粉の粒径分布
を図１に示す。Example 16, Comparative Example 3 Using balls (φ8 mm) prepared for the abrasion test in Example 2 and Comparative Example 1, comparative experiments of crushing ability were conducted. That is, resin lining ball mill (2 liters)
Test ball (φ8 mm) 3.6 kg, alumina powder (Showa Denko KK "RW-92" 325 mesh) 1
kg, 800 ml of water were charged, and the rotation speed was 100 r. p.
m. Each test was conducted under the condition of 24 hours. The particle size distribution of the alumina powder crushed by this test is shown in FIG.
【００２４】図１より、明らかにＹｂ2 Ｏ3 安定化Ｚｒ
Ｏ2 焼結体を用いたもの（実施例１６）がＹ2 Ｏ3 安定
化ＺｒＯ2 焼結体を用いたもの（比較例３）よりも粉砕
能力が優れていることが認められる。この粉砕能力の差
は、表１に示す特性の中で、嵩密度の差が大きな要因と
考えられる。From FIG. 1, it is apparent that Yb 2 O 3 stabilized Zr
It can be seen that the one using the O 2 sintered body (Example 16) has a better crushing ability than the one using the Y 2 O 3 stabilized ZrO 2 sintered body (Comparative Example 3). Among the characteristics shown in Table 1, it is considered that the difference in the pulverizing ability is largely due to the difference in the bulk density.
【００２５】[0025]
【発明の効果】以上詳述した通り、本発明のＹｂ2 Ｏ
3 ，Ｅｒ2 Ｏ3 及びＨｏ2 Ｏ3 安定化ＺｒＯ2 焼結体を
用いた粉砕用部品材料によれば、高強度、高靭性、高耐
摩耗性で、耐久性に優れ、粉砕能力にも著しく優れた粉
砕用部品材料が提供される。本発明のＹｂ2 Ｏ3 ，Ｅｒ
2 Ｏ3 及びＨｏ2 Ｏ3 安定化ＺｒＯ2 焼結体を用いた粉
砕用部品材料は、乾式又は湿式でセラミックス、金属、
有機高分子などの粒子を微粉砕する各種粉砕装置に使用
される内張材、メディアなどの粉砕用部品材料として、
工業的に極めて有用である。As described in detail above, the Yb 2 O of the present invention is used.
According to the crushing component material using 3 , Er 2 O 3 and Ho 2 O 3 stabilized ZrO 2 sinter, it has high strength, high toughness, high wear resistance, excellent durability and crushing ability. A significantly superior milling component material is provided. Yb 2 O 3 , Er of the present invention
2 O 3 and Ho 2 O 3 -stabilized ZrO 2 sintered body materials for pulverization are ceramics, metals, dry or wet,
As a material for crushing parts such as lining materials and media used in various crushing devices for finely crushing particles such as organic polymers,
It is extremely useful industrially.
【図１】実施例１６及び比較例３における粉砕能力テス
ト結果を示すグラフである。FIG. 1 is a graph showing the results of crushing ability test in Example 16 and Comparative Example 3.
Claims (1)
3 及びＨｏ2 Ｏ3 よりなる群から選ばれる１種又は２種
以上を合量で２〜６モル％含有するＺｒＯ2を主成分と
する焼結体を用いて構成された粉砕用部品材料であっ
て、該焼結体の結晶粒子が主に正方晶の相或いは正方晶
及び立方晶の混合相よりなり、該結晶の平均結晶粒子径
が３μｍ以下であり、かつ、該焼結体の嵩密度が６．０
ｇ／ｃｍ3 以上であることを特徴とするイッテルビア，
エルビア及びホルミアの１種以上で安定化されたジルコ
ニア焼結体を用いた粉砕用部品材料。1. Yb 2 O 3 and Er 2 O as main stabilizers
A crushing part material constituted by using a sintered body containing ZrO 2 as a main component and containing 2 to 6 mol% of one kind or two or more kinds selected from the group consisting of 3 and Ho 2 O 3. And the crystal grains of the sintered body are mainly composed of a tetragonal phase or a mixed phase of tetragonal and cubic crystals, the average crystal grain size of the crystal is 3 μm or less, and the bulk of the sintered body is Density 6.0
ytterbia, characterized by a g / cm 3 or more,
A crushing component material using a zirconia sintered body stabilized with at least one of Erbia and Holmia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5063733A JPH0639303A (en) | 1992-04-22 | 1993-03-23 | Material of part for crushing using sintered body of zirconia |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10279892 | 1992-04-22 | ||
| JP4-102798 | 1992-04-22 | ||
| JP5063733A JPH0639303A (en) | 1992-04-22 | 1993-03-23 | Material of part for crushing using sintered body of zirconia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0639303A true JPH0639303A (en) | 1994-02-15 |
Family
ID=26404863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5063733A Pending JPH0639303A (en) | 1992-04-22 | 1993-03-23 | Material of part for crushing using sintered body of zirconia |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639303A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009513373A (en) * | 2005-10-27 | 2009-04-02 | プリメット プレシジョン マテリアルズ， インコーポレイテッド | Small particle compositions and related methods |
| JP2014141393A (en) * | 2012-12-28 | 2014-08-07 | Tosoh Corp | Pink-colored zirconia sintered compact |
| JP2018002590A (en) * | 2012-12-28 | 2018-01-11 | 東ソー株式会社 | Colored light transmissive zirconia sintered body and application therefor |
| US11919095B2 (en) | 2018-04-20 | 2024-03-05 | Star Micronics Co., Ltd. | Lathe |
-
1993
- 1993-03-23 JP JP5063733A patent/JPH0639303A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009513373A (en) * | 2005-10-27 | 2009-04-02 | プリメット プレシジョン マテリアルズ， インコーポレイテッド | Small particle compositions and related methods |
| JP2014141393A (en) * | 2012-12-28 | 2014-08-07 | Tosoh Corp | Pink-colored zirconia sintered compact |
| JP2018002590A (en) * | 2012-12-28 | 2018-01-11 | 東ソー株式会社 | Colored light transmissive zirconia sintered body and application therefor |
| US11919095B2 (en) | 2018-04-20 | 2024-03-05 | Star Micronics Co., Ltd. | Lathe |
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