JPH05294718A - Aluminum oxide-zirconium oxide based sintered ceramic excellent in toughness - Google Patents
Aluminum oxide-zirconium oxide based sintered ceramic excellent in toughnessInfo
- Publication number
- JPH05294718A JPH05294718A JP4129973A JP12997392A JPH05294718A JP H05294718 A JPH05294718 A JP H05294718A JP 4129973 A JP4129973 A JP 4129973A JP 12997392 A JP12997392 A JP 12997392A JP H05294718 A JPH05294718 A JP H05294718A
- Authority
- JP
- Japan
- Prior art keywords
- sintered ceramic
- zirconium oxide
- aluminum oxide
- based sintered
- cutting
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、すぐれた靭性を有
し、例えば切削工具として用いた場合に、鋼の連続切削
は勿論のこと、特に高靭性が要求される鋼の断続切削に
用いた場合にも切刃に欠損やチッピングなどの発生な
く、すぐれた切削性能を発揮する酸化アルミニウム（以
下、Ａｌ2 Ｏ3 で示す）−酸化ジルコニウム（以下、Ｚ
ｒＯ2 で示す）系焼結セラミックスに関するものであ
る。BACKGROUND OF THE INVENTION The present invention has excellent toughness, and when used as a cutting tool, it is used not only for continuous cutting of steel but also for intermittent cutting of steel which is particularly required to have high toughness. In this case, aluminum oxide (hereinafter referred to as Al 2 O 3 ) -zirconium oxide (hereinafter referred to as Z) that exhibits excellent cutting performance without causing damage or chipping on the cutting edge.
(indicated by rO 2 ) -based sintered ceramics.
【０００２】[0002]
【従来の技術】従来、例えば特公昭５９−６２７４号公
報に記載される通り、Ａｌ2 Ｏ3 と、ＺｒＯ2 並びにこ
れにＭｇＯ、Ｙ2 Ｏ3 、およびＣｅＯ2 などのうちの１
種以上を１〜１２モル％の割合で含有させてなる部分安
定化ＺｒＯ2 のいずれか、または両方を主成分とし、か
つ図２の走査型電子顕微鏡による組織写真に例示される
微細組織をもったＡｌ2 Ｏ3 −ＺｒＯ2 系焼結セラミッ
クスが知られており、これが切削工具として、主に鋼な
どの連続切削に用いられていることは良く知られるとこ
ろである。2. Description of the Related Art Conventionally, as disclosed in, for example, Japanese Patent Publication No. 59-6274, Al 2 O 3 , ZrO 2 and one of MgO, Y 2 O 3 , CeO 2 and the like are used.
One or more of the partially stabilized ZrO 2 containing 1 to 12 mol% of one or more species as a main component, and having a fine structure illustrated in the structure photograph by the scanning electron microscope of FIG. Also known is Al 2 O 3 —ZrO 2 system sintered ceramics, and it is well known that this is mainly used as a cutting tool for continuous cutting of steel and the like.
【０００３】また、これらの従来Ａｌ2 Ｏ3 −ＺｒＯ2
系焼結ラミックスが、上記公告公報にも記載される通
り、原料粉末として、Ａｌ2 Ｏ3 粉末、ＺｒＯ2 粉末、
および部分安定化ＺｒＯ2 粉末などを用い、これら原料
粉末を所定の配合組成に配合し、混合した後、所定形状
の圧粉体にプレス成形し、この圧粉体を、酸化性雰囲気
中、１４００〜１８００℃の温度に所定時間保持の条件
で焼結し、さらに必要に応じて熱間静水圧プレス（ＨＩ
Ｐ）処理を施すことによって製造されることも知られて
いる。Also, these conventional Al 2 O 3 --ZrO 2
As described in the above publication, Al 2 O 3 powder, ZrO 2 powder,
And partially stabilized ZrO 2 powder, etc., these raw material powders are blended in a predetermined compounding composition and mixed, and then pressed into a green compact having a predetermined shape. Sintered at a temperature of up to 1800 ° C. for a predetermined time and, if necessary, hot isostatic pressing (HI
It is also known to be manufactured by subjecting to P) treatment.
【０００４】[0004]
【発明が解決しようとする課題】一方、近年の例えば切
削加工の省力化、ＦＡ化、および汎用化に対する要求は
厳しく、これに伴ない、連続切削および断続切削のいず
れの切削も可能な切削工具が強く望まれているが、上記
の従来Ａｌ2 Ｏ3 −ＺｒＯ2 系焼結セラミックスの場
合、これを例えば鋼の断続切削に用いると、靭性不足が
原因で切刃に欠損やチッピングが発生し易く、実用に供
することができないのが現状である。On the other hand, in recent years, for example, demands for labor saving, FA, and general-purpose cutting are severe, and accordingly, a cutting tool capable of performing both continuous cutting and intermittent cutting. However, in the case of the conventional Al 2 O 3 —ZrO 2 system sintered ceramics described above, when this is used for intermittent cutting of steel, for example, chipping or chipping of the cutting edge occurs due to insufficient toughness. At present, it is easy and cannot be put to practical use.
【０００５】そこで、本発明者等は、上述のような観点
から、靭性のすぐれたＡｌ2 Ｏ3 −ＺｒＯ2 系焼結セラ
ミックスを開発すべく研究を行なった結果、Ａｌ2 Ｏ3
−ＺｒＯ2 系焼結セラミックスを製造するに際して、原
料粉末として用いられるＡｌ2 Ｏ3 粉末に、あらかじめ
Ｃａ，Ｂａ、およびＳｒの炭酸塩、硝酸塩、塩化物、お
よび酸化物（以下、それぞれＣａＣＯ3 ，ＢａＣＯ3 ，
ＳｒＣＯ3 ，Ｃａ（ＮＯ3 ）2 ，Ｂａ（ＮＯ3 ）2 ，Ｓ
ｒ（ＮＯ3 ）2 ，ＣａＣｌ2，ＢａＣｌ2 ，ＳｒＣ
ｌ2 ，ＣａＯ，ＢａＯ、およびＳｒＯで示す）のうちの
１種以上の粉末と、酸化けい素（以下、ＳｉＯ2 で示
す）粉末およびＳｉアルコキシドのうちの１種以上と
を、全体に占める重量割合で（以下、％はすべて重量％
を示す）、それぞれ前者：０．０２〜２％、後者：０．
０２〜１％の割合で配合し、混合した後、酸化性雰囲気
中、６００〜１０５０℃の温度に所定時間保持の加熱処
理を施した状態で（この場合、前記炭酸塩、硝酸塩、お
よび塩化物はいずれも酸化物となるので、以下上記酸化
物を含め、これらを総称して金属酸化物系化合物とい
い、またＳｉアルコキシドはＳｉＯ2 となるので、以下
ＳｉＯ2 を含め、これらを総称してＳｉＯ2 系化合物と
いう）、これに同じく原料粉末としてのＺｒＯ2 粉末お
よび安定化ＺｒＯ2 粉末のうちのいずれか、または両方
を、同じく全体に占める割合で５〜３０％配合し、混合
し、プレス成形などにより圧粉体などの成形体とし、こ
の成形体を焼結すると、焼結時に、上記Ｃａ，Ｂａ、お
よびＳｒの酸化物とＳｉＯ2 の共存作用でＡｌ2 Ｏ3 結
晶が細長く成長し、この結果得られたＡｌ2 Ｏ3 −Ｚｒ
Ｏ2 系焼結セラミックスは、図１の走査型電子顕微鏡に
よる組織写真に例示される通り、Ａｌ2 Ｏ3 の主体が細
長成長結晶からなる組織をもつようになり、この細長成
長Ａｌ2 Ｏ3 結晶によってすぐれた靭性を具備するよう
になり、したがってこれを切削工具として用いた場合、
鋼の連続切削は勿論のこと、高靭性が要求される鋼の断
続切削にも、切刃に欠損やチッピングなどの発生がな
く、長期に亘ってすぐれた切削性能を発揮するという研
究結果を得たのである。Therefore, the inventors of the present invention have conducted research to develop Al 2 O 3 -ZrO 2 -based sintered ceramics having excellent toughness from the above viewpoints, and as a result, Al 2 O 3
In producing a —ZrO 2 -based sintered ceramics, an Al 2 O 3 powder used as a raw material powder is preliminarily added to Ca, Ba, and Sr carbonates, nitrates, chlorides, and oxides (hereinafter, referred to as CaCO 3 , BaCO 3 ,
SrCO 3 , Ca (NO 3 ) 2 , Ba (NO 3 ) 2 , S
r (NO 3 ) 2 , CaCl 2 , BaCl 2 , SrC
L 2 , CaO, BaO, and SrO) and one or more powders, and a silicon oxide (hereinafter, referred to as SiO 2 ) powder and one or more Si alkoxides in total weight Percentage (below,% are all weight%
, Respectively, the former: 0.02 to 2%, the latter: 0.
After blending in a proportion of 02 to 1% and mixing, in a state of being subjected to a heat treatment of keeping at a temperature of 600 to 1050 ° C. for a predetermined time in an oxidizing atmosphere (in this case, the carbonate, the nitrate, and the chloride). Since all of them are oxides, these are collectively referred to as metal oxide compounds, including the above oxides. Since Si alkoxide is SiO 2 , hereinafter, including SiO 2 , they are collectively referred to. SiO 2 compound), and either or both of ZrO 2 powder as a raw material powder and stabilized ZrO 2 powder, or both, are mixed in a proportion of 5 to 30%, and mixed and pressed. When a compact such as a green compact is formed by molding and the compact is sintered, the Al 2 O 3 crystal grows elongated due to the coexistence of the oxides of Ca, Ba, and Sr and SiO 2 during sintering. ,this Results obtained Al 2 O 3 -Zr
O 2 based sintered ceramics, as illustrated in structure photograph by a scanning electron microscope of Figure 1, will have a tissue mainly composed of Al 2 O 3 is an elongated grown crystal, the elongate growing Al 2 O 3 The crystal has excellent toughness, so when it is used as a cutting tool,
We have obtained the research results that not only continuous cutting of steel but also intermittent cutting of steel that requires high toughness does not cause chipping or chipping of the cutting edge and exhibits excellent cutting performance over a long period of time. It was.
【０００６】この発明は、上記の研究結果にもとづいて
なされたものであって、Ａｌ2 Ｏ3と、ＺｒＯ2 および
安定化ＺｒＯ2 のいずれか、または両方を主成分とする
Ａｌ2 Ｏ3 −ＺｒＯ2 系焼結セラミックスにおいて、上
記焼結セラミックスを構成するＡｌ2 Ｏ3 の主体を、組
織上細長成長結晶としてなる靭性にすぐれたＡｌ2 Ｏ3
−ＺｒＯ2 系焼結セラミックスに特徴を有するものであ
る。[0006] This invention was made based on the above findings, Al 2 O 3 and any of ZrO 2 and stabilized ZrO 2, or both mainly Al 2 O 3 - in the ZrO 2 sintered ceramics, Al 2 O 3 to the main body of Al 2 O 3 constituting the sintered ceramics, excellent in toughness made as organizational elongated growing crystals
A feature of the ZrO 2 -based sintered ceramics.
【０００７】[0007]
【実施例】つぎに、この発明のＡｌ2 Ｏ3 −ＺｒＯ2 系
焼結セラミックスを実施例により具体的に説明する。原
料粉末として、いずれも０．１〜５μｍの範囲内の所定
の平均粒径を有する、各種の金属酸化物系化合物粉末、
ＳｉＯ2 粉末、Ｓｉアルコキシド、ＺｒＯ2粉末、Ｙ2
Ｏ3 またはＣｅＯ2 含有の部分安定化ＺｒＯ2 粉末、お
よびＡｌ2 Ｏ3 粉末を用意し、まず、これらの原料粉末
のうちの金属酸化物系化合物粉末とＳｉＯ2 系化合物と
を、Ａｌ2 Ｏ3 粉末に表１〜３に示される割合（全体に
占める割合で示す）で配合し、ボールミルで７２時間混
合した後、大気中、同じく表１〜３に示される条件で加
熱処理を施し、ついでこれに同じく表１〜３に示される
割合（同じく全体に占める割合）でＺｒＯ2 粉末および
部分安定化ＺｒＯ2 粉末を配合し、ボールミルで７２時
間湿式混合し、上記Ｓｉアルコキシドを用いた場合には
水を添加して加水分解を行なわしめ、乾燥した後、１to
n ／cm2 の圧力で所定形状の圧粉体にプレス成形し、こ
の圧粉体を大気中、表１〜３に示される温度に１時間保
持の条件で焼結することにより、ＪＩＳ・ＳＮＧＮ１２
０４０８のスローアウェイ形状をもった本発明Ａｌ2 Ｏ
3 −ＺｒＯ2 系焼結セラミックスで構成された切削工具
（以下、本発明セラミックス切削工具という）１〜２３
を製造した。また、靭性を評価する目的で、曲げ強度お
よび破壊靭性値の測定用試験片も合せて製造した。EXAMPLES Next, the Al 2 O 3 —ZrO 2 system sintered ceramics of the present invention will be specifically described by way of examples. As the raw material powder, various metal oxide compound powders, each having a predetermined average particle diameter within the range of 0.1 to 5 μm,
SiO 2 powder, Si alkoxide, ZrO 2 powder, Y 2
A partially stabilized ZrO 2 powder containing O 3 or CeO 2 and an Al 2 O 3 powder are prepared. First, the metal oxide compound powder and the SiO 2 compound of these raw material powders are mixed with Al 2 O 3. 3 powders were blended in the proportions shown in Tables 1 to 3 (shown in proportion to the whole), mixed for 72 hours in a ball mill, and then heat-treated in the air under the conditions also shown in Tables 1 to 3, and then, Similarly, ZrO 2 powder and partially stabilized ZrO 2 powder were blended in the proportions shown in Tables 1 to 3 (the proportion in the whole), wet-mixed for 72 hours in a ball mill, and the above-mentioned Si alkoxide was used. After adding water to carry out hydrolysis and drying, 1 to
JIS / SNGN12 is prepared by press-molding a green compact having a predetermined shape at a pressure of n / cm 2 and sintering the green compact in the atmosphere at a temperature shown in Tables 1 to 3 for 1 hour.
The present invention Al 2 O having a throwaway shape of 0408
Cutting tool composed of 3- ZrO 2 system sintered ceramics (hereinafter referred to as ceramics cutting tool of the present invention) 1 to 23
Was manufactured. Further, for the purpose of evaluating toughness, test pieces for measuring flexural strength and fracture toughness were also manufactured.
【０００８】さらに、比較の目的で、原料粉末として、
上記のＡｌ2 Ｏ3 粉末、ＺｒＯ2 粉末、および安定化Ｚ
ｒＯ2 粉末を用い、加熱処理を行なわず、これらの原料
粉末を直接表３に示される配合組成に配合し、かつ表３
に示される温度で焼結する以外は同一の条件にて従来Ａ
ｌ2 Ｏ3 −ＺｒＯ2 系焼結セラミックスで構成された切
削工具（以下、従来セラミックス切削工具という）１〜
４を製造した。この場合も曲げ強度および破壊靭性値測
定用試験片を製造した。Further, as a raw material powder, for comparison purposes,
Al 2 O 3 powder, ZrO 2 powder, and stabilized Z described above
Using rO 2 powder, without heat treatment, these raw material powders were directly blended to the blending composition shown in Table 3, and Table 3
Conventional A under the same conditions except sintering at the temperature shown in
Cutting tool composed of l 2 O 3 -ZrO 2 system sintered ceramics (hereinafter referred to as conventional ceramics cutting tool) 1
4 was produced. Also in this case, test pieces for measuring flexural strength and fracture toughness were manufactured.
【０００９】[0009]
【表１】 [Table 1]
【００１０】[0010]
【表２】 [Table 2]
【００１１】[0011]
【表３】 [Table 3]
【００１２】[0012]
【表４】 [Table 4]
【００１３】[0013]
【表５】 [Table 5]
【００１４】ついで、この結果得られた各種のセラミッ
クス切削工具について、 被削材：ＳＣＭ４４０（硬さ：ＨR Ｂ１８０）、の２本
縦溝付丸棒、 切削速度：４００ｍ／min.、 切込み：０．１５mm、 送り：１mm／rev.、 切削時間：１５分、 の条件での鋼の湿式断続切削試験、並びに、 被削材：ＳＣＭ４４０ 切削速度：３００ｍ／min.、 切込み：１．５mm、 送り：０．２mm／rev.、 切削時間：１０分、 の条件での鋼の湿式連続切削試験を行ない、いずれの切
削試験でも切刃の逃げ面摩耗幅を測定した。これらの測
定結果を表４，５に示した。なお、表４，５には曲げ強
度および破壊靭性値の測定結果も合せて示した。Next, regarding various ceramic cutting tools obtained as a result, two round grooved round bars of a work material: SCM440 (hardness: H R B180), a cutting speed: 400 m / min., A cut: Wet intermittent cutting test of steel under the conditions of 0.15 mm, feed: 1 mm / rev., Cutting time: 15 minutes, and work material: SCM440 Cutting speed: 300 m / min., Depth of cut: 1.5 mm, feed : 0.2 mm / rev., Cutting time: 10 minutes, a wet continuous cutting test of steel was performed, and the flank wear width of the cutting edge was measured in each cutting test. The results of these measurements are shown in Tables 4 and 5. Tables 4 and 5 also show the measurement results of bending strength and fracture toughness.
【００１５】さらに、図１および図２には、それぞれ本
発明セラミックス切削工具３および従来セラミックス切
削工具４の走査型電子顕微鏡による組織写真（５０００
倍）を示した。Further, FIGS. 1 and 2 are photographs of the structures of the ceramic cutting tool 3 of the present invention and the conventional ceramic cutting tool 4 by a scanning electron microscope (5000).
Times).
【００１６】[0016]
【発明の効果】図１および図２に示される通り、本発明
セラミックス切削工具が細長成長Ａｌ2 Ｏ3 結晶と塊状
ＺｒＯ2 結晶を主体とした混合組織を示すのに対し、従
来セラミックス切削工具は塊状Ａｌ2 Ｏ3 結晶と塊状Ｚ
ｒＯ2 結晶の混合組織を示し、両者は組織上相異するこ
とが明白であり、これらの組織上の相異は靭性に現わ
れ、表４，５に示される通り本発明セラミックス切削工
具１〜２３は、従来セラミックス切削工具１〜４に比し
て一段とすぐれた靭性をもつことが示されており、この
ことは、鋼の連続切削では同等の切削性能を示すもの
の、鋼の断続切削では、従来セラミックス切削工具１〜
４のいずれもが切刃に欠損が発生し、比較的短時間で使
用寿命に至るのに対して、本発明セラミックス切削工具
１〜２３は、いずれも切刃に欠損やチッピングの発生な
く、すぐれた耐摩耗性を長期に亘って発揮することから
も明らかである。As shown in FIGS. 1 and 2, the ceramic cutting tool of the present invention has a mixed structure mainly composed of elongated Al 2 O 3 crystals and massive ZrO 2 crystals, whereas the conventional ceramic cutting tool has Bulk Al 2 O 3 crystals and bulk Z
It shows a mixed structure of rO 2 crystals, and it is clear that they are structurally different, and these structural differences appear in toughness, and as shown in Tables 4 and 5, the ceramic cutting tools 1 to 23 of the present invention are shown. Has been shown to have much better toughness than conventional ceramics cutting tools 1 to 4. This means that although continuous cutting of steel shows equivalent cutting performance, it is not Ceramics cutting tool 1 ~
In each of the four cutting edges, the cutting edge is damaged, and the service life is reached in a relatively short time. On the other hand, the ceramic cutting tools 1 to 23 of the present invention are all excellent in that the cutting edge is free from chipping and chipping. It is also clear from the fact that the abrasion resistance is exhibited over a long period of time.
【００１７】上述のように、この発明のＡｌ2 Ｏ3 −Ｚ
ｒＯ2 系焼結セラミックスは、従来Ａｌ2 Ｏ3 −ＺｒＯ
2 系焼結セラミックスに比して一段とすぐれた靭性をも
つので、例えばこれを切削工具として用いた場合、鋼の
連続切削は勿論のこと、高靭性が要求される鋼の断続切
削などに用いても切刃に欠損やチッピングなどの発生な
く、すぐれた切削性能を長期に亘って発揮するのであ
る。As mentioned above, the Al 2 O 3 -Z of the present invention is used.
Sintered ceramics of rO 2 type are conventionally Al 2 O 3 -ZrO
Since it has much better toughness than 2 type sintered ceramics, when it is used as a cutting tool, for example, it can be used not only for continuous cutting of steel but also for intermittent cutting of steel that requires high toughness. Also, the cutting edge does not suffer from chipping or chipping and exhibits excellent cutting performance over a long period of time.
【図１】本発明セラミックス切削工具３の走査型電子顕
微鏡による組織写真である。FIG. 1 is a structural photograph of a ceramics cutting tool 3 of the present invention by a scanning electron microscope.
【図２】従来セラミックス切削工具４の走査型電子顕微
鏡による組織写真である。FIG. 2 is a structural photograph of a conventional ceramics cutting tool 4 taken with a scanning electron microscope.
Claims (2)
および部分安定化酸化ジルコニウムのいずれか、または
両方を主成分とする酸化アルミニウム−酸化ジルコニウ
ム系焼結セラミックスにおいて、 上記焼結セラミックスを構成する酸化アルミニウムの主
体を、組織上細長成長結晶としたことを特徴とする靭性
のすぐれた酸化アルミニウム−酸化ジルコニウム系焼結
セラミックス。1. An aluminum oxide-zirconium oxide-based sintered ceramic containing aluminum oxide and / or zirconium oxide and / or partially stabilized zirconium oxide as a main component, wherein the main component of aluminum oxide is the above-mentioned sintered ceramic. Is an elongated grown crystal in terms of structure, and is an aluminum oxide-zirconium oxide-based sintered ceramic having excellent toughness.
コニウムおよび部分安定化酸化ジルコニウムの含有量が
５〜３０重量％であることを特徴とする上記請求項１記
載の酸化アルミニウム−酸化ジルコニウム系焼結セラミ
ックス。2. The aluminum oxide-zirconium oxide-based sintered ceramics according to claim 1, wherein the content of zirconium oxide and partially stabilized zirconium oxide in the sintered ceramics is 5 to 30% by weight.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4129973A JP2910020B2 (en) | 1992-04-23 | 1992-04-23 | Aluminum oxide-zirconium oxide sintered ceramics with excellent toughness |
| US08/049,204 US5403795A (en) | 1992-04-23 | 1993-04-19 | Platelet α-Al2 O3 based ceramic composite |
| DE4313358A DE4313358A1 (en) | 1992-04-23 | 1993-04-23 | Ceramic based on alpha-aluminium oxide in platelet form - obtd. by adding agents controlling the formation and grain growth of the platelets to the oxide |
| US08/285,193 US5686366A (en) | 1992-04-23 | 1994-08-03 | Process for producing platelet α-Al2 O3 based ceramic composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4129973A JP2910020B2 (en) | 1992-04-23 | 1992-04-23 | Aluminum oxide-zirconium oxide sintered ceramics with excellent toughness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05294718A true JPH05294718A (en) | 1993-11-09 |
| JP2910020B2 JP2910020B2 (en) | 1999-06-23 |
Family
ID=15023020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4129973A Expired - Lifetime JP2910020B2 (en) | 1992-04-23 | 1992-04-23 | Aluminum oxide-zirconium oxide sintered ceramics with excellent toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2910020B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1510509A2 (en) * | 2003-08-28 | 2005-03-02 | Kyocera Corporation | Alumina/zirconia ceramics and method of producing the same |
| WO2005042047A1 (en) * | 2003-10-30 | 2005-05-12 | Kyocera Corporation | Biological member and method for manufacture thereof |
| JP2006122634A (en) * | 2003-12-25 | 2006-05-18 | Kyocera Corp | Biological member, artificial joint employing the same, and method for manufacture the member |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63139044A (en) * | 1986-12-01 | 1988-06-10 | 東ソー株式会社 | Alumina-zirconia base sintered body and manufacture |
| JPH0517210A (en) * | 1991-02-07 | 1993-01-26 | Sumitomo Cement Co Ltd | Production of alumina-based composite sintered body and the sintered body |
-
1992
- 1992-04-23 JP JP4129973A patent/JP2910020B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63139044A (en) * | 1986-12-01 | 1988-06-10 | 東ソー株式会社 | Alumina-zirconia base sintered body and manufacture |
| JPH0517210A (en) * | 1991-02-07 | 1993-01-26 | Sumitomo Cement Co Ltd | Production of alumina-based composite sintered body and the sintered body |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1510509A2 (en) * | 2003-08-28 | 2005-03-02 | Kyocera Corporation | Alumina/zirconia ceramics and method of producing the same |
| EP1510509A3 (en) * | 2003-08-28 | 2005-11-09 | Kyocera Corporation | Alumina/zirconia ceramics and method of producing the same |
| US7148167B2 (en) | 2003-08-28 | 2006-12-12 | Kyocera Corporation | Alumina/zirconia ceramics and method of producing the same |
| WO2005042047A1 (en) * | 2003-10-30 | 2005-05-12 | Kyocera Corporation | Biological member and method for manufacture thereof |
| US7820577B2 (en) | 2003-10-30 | 2010-10-26 | Kyocera Corporation | Biomedical member and method for producing the same |
| JP2006122634A (en) * | 2003-12-25 | 2006-05-18 | Kyocera Corp | Biological member, artificial joint employing the same, and method for manufacture the member |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2910020B2 (en) | 1999-06-23 |
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