JPH05301762A - Production of cutting tool with high toughness made of aluminum oxide-based ceramic - Google Patents
Production of cutting tool with high toughness made of aluminum oxide-based ceramicInfo
- Publication number
- JPH05301762A JPH05301762A JP4134274A JP13427492A JPH05301762A JP H05301762 A JPH05301762 A JP H05301762A JP 4134274 A JP4134274 A JP 4134274A JP 13427492 A JP13427492 A JP 13427492A JP H05301762 A JPH05301762 A JP H05301762A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- cutting tool
- aluminum oxide
- cutting
- toughness
- 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、例えば鋳鉄の連続切削は勿論のこと、高靭性が要求
される鋳鉄の断続切削や、高送りおよび高切込みなどの
重切削に用いた場合にも切刃に欠損やチッピング発生な
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）基セラミックス製切削工具の製
造法に関するものである。BACKGROUND OF THE INVENTION The present invention has excellent toughness. For example, not only for continuous cutting of cast iron but also for intermittent cutting of cast iron which requires high toughness and heavy cutting such as high feed and high depth of cut. The present invention relates to a method for producing a cutting tool made of an aluminum oxide (hereinafter referred to as Al 2 O 3 ) based ceramics, which exhibits excellent cutting performance without causing damage or chipping on a cutting edge even when used.
【０００２】[0002]
【従来の技術】従来、例えば特開昭６１−１７４１６５
号公報に記載される通り、原料粉末として、Ａｌ2 Ｏ3
粉末および主体がウイスカーからなる炭化けい素（以
下、ＳｉＣで示す）を用い、これら原料粉末を、重量％
で（以下、％は重量％を示す）、 主体がウイスカーからなるＳｉＣ（以下、ＳｉＣウイス
カーという）：２〜３０％、 Ａｌ2 Ｏ3 ：残り、 の配合組成に配合し、混合し、この結果の混合粉末に、
温度：１５００〜１９００℃、圧力：２０〜４０ＭＰａ
の通常の条件でホットプレス焼結を施すことによりＡｌ
2 Ｏ3 基セラミックスで構成された切削工具を製造する
方法が知られており、かつこれが鋳鉄の切削に用いられ
ていることも知られている。2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 61-174165.
No. as described in JP, as raw material powder, Al 2 O 3
A powder and a silicon carbide whose main component is a whisker (hereinafter referred to as SiC) are used, and these raw material powders are used in a weight percentage.
(Hereinafter,% indicates% by weight), SiC mainly composed of whiskers (hereinafter referred to as SiC whiskers): 2 to 30%, Al 2 O 3 : remaining, blended to a blended composition, and mixed as a result. To the mixed powder of
Temperature: 1500 to 1900 ° C, pressure: 20 to 40 MPa
Al by applying hot press sintering under normal conditions
A method for producing a cutting tool composed of 2 O 3 -based ceramics is known, and it is also known that this is used for cutting cast iron.
【０００３】[0003]
【発明が解決しようとする課題】一方近年の切削加工の
多様化に対する要求は強く、これに伴ない、例えば鋳鉄
の連続切削ばかりでなく、これの断続切削や、高送りお
よび高切込みなどの重切削などの切削も可能なＡｌ2 Ｏ
3 基セラミックス製切削工具が求められる傾向にある
が、上記の従来Ａｌ2 Ｏ3 基セラミックス製切削工具は
じめ、その他のＡｌ2 Ｏ3 基セラミックス製切削工具は
靭性不足が原因で、上記の高靭性が要求される断続切削
や重切削などに用いた場合、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, there is a strong demand for diversification of cutting work in recent years, and accordingly, not only continuous cutting of cast iron, for example, but also intermittent cutting of this, high feed and high depth of cut, etc. Al 2 O that can also be cut
Although there is a tendency for cutting tools made of 3- based ceramics to be required, the cutting tools made of conventional Al 2 O 3 -based ceramics and other cutting tools made of Al 2 O 3 -based ceramics have high toughness due to insufficient toughness. When it is used for intermittent cutting or heavy cutting, which is required, the cutting edge is liable to be chipped or chipped and cannot be put to practical use under the present circumstances.
【０００４】[0004]
【課題を解決するための手段】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 基セ
ラミックス製切削工具を開発すべく研究を行なった結
果、Ａｌ2 Ｏ3 基セラミックス製切削工具を製造するに
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 ，Ｂ
ａＣＯ3 ，ＳｒＣＯ3 ，Ｃａ（ＮＯ3 ）2 ，Ｂａ（ＮＯ
3 ）2 ，Ｓｒ（ＮＯ3 ）2 ，ＣａＣｌ2 ，ＢａＣｌ2 ，
ＳｒＣｌ2 ，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）粉末およびアルコキシドのうちの１種以上と
を、以下いずれも全体に占める割合で、それぞれ０．０
２〜１％づつ配合し、混合した後、酸化性雰囲気中、６
００〜１０５０℃の範囲内の所定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り、またアルコ
キシドもＳｉＯ2 となる）、これに同じく原料粉末とし
てのＳｉＣウイスカー：５〜３０％配合し、混合した
後、この混合粉末に、温度：１５００〜１９００℃、圧
力：２０〜４０ＭＰａの通常の条件でホットプレス焼結
を施すと、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 結晶が板状に成長
し、この結果得られたＡｌ2 Ｏ3 基セラミックス製切削
工具は板状成長したＡｌ2 Ｏ3 結晶によってすぐれた靭
性を具備するようになり、例えば鋳鉄の連続切削は勿論
のこと、鋳鉄の切削に用いた場合にも切刃に欠損やチッ
ピングの発生なく、すぐれた切削性能を長期に亘って発
揮するという研究結果を得たのである。Therefore, the present inventors have
From the above viewpoints, as a result of research to develop a cutting tool made of Al 2 O 3 -based ceramics having excellent toughness, as a result, when Al 2 O 3 -based ceramics cutting tool is manufactured, Al used as raw material powder is manufactured. 2 O 3 powder,
Ca, Ba, and Sr carbonates, nitrates,
Chlorides and oxides (hereinafter CaCO 3 , B respectively)
aCO 3 , SrCO 3 , Ca (NO 3 ) 2 , Ba (NO
3 ) 2 , Sr (NO 3 ) 2 , CaCl 2 , BaCl 2 ,
Powder of one or more of SrCl 2 , CaO, BaO, and SrO) and silicon oxide (hereinafter referred to as SiO 2
Powder) and one or more kinds of alkoxides, each of which is 0.0% of the total.
2-1% each, and after mixing, in an oxidizing atmosphere, 6
In a state of being subjected to a heat treatment of holding at a predetermined temperature within a range of 00 to 1050 ° C. for a predetermined time (in this case, all of the carbonate, the nitrate, and the chloride are oxides, and the alkoxide is also SiO 2 ). Similarly, SiC whiskers as raw material powder: 5 to 30% are mixed and mixed, and then the mixed powder is subjected to hot press sintering under normal conditions of temperature: 1500 to 1900 ° C. and pressure: 20 to 40 MPa. When, the Ca during sintering, Ba, and Al 2 O 3 crystals grow in a plate shape in the coexistence effect of the oxide and SiO 2 of Sr, the resulting Al 2 O 3 based ceramic material made cutting tool plate The toughened Al 2 O 3 crystal provides excellent toughness. For example, not only for continuous cutting of cast iron but also for cutting of cast iron, the cutting edge does not cause chipping or chipping and The result of the research is that the cutting performance is exhibited for a long time.
【０００５】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、（ａ） Ａｌ2 Ｏ3 粉末に、以
下いずれも全体に占める割合で、焼結時のＡｌ2 Ｏ3 結
晶の板状成長促進助剤として、ＣａＣＯ3 ，ＢａＣ
Ｏ3 ，ＳｒＣＯ3 ，Ｃａ（ＮＯ3 ）2 ，Ｂａ（ＮＯ3 ）
2，Ｓｒ（ＮＯ3 ）2 ，ＣａＣｌ2 ，ＢａＣｌ2 ，Ｓｒ
Ｃｌ2 ，ＣａＯ，ＢａＯ，およびＳｒＯ（これらのうち
の炭酸塩、硝酸塩、および塩化物は後工程の加熱処理で
酸化物となるので、以下前記酸化物を含め、これらを総
称して金属酸化物系化合物という）のうちの１種以上の
粉末：０．０２〜１％と、ＳｉＯ2 粉末およびアルコキ
シド（このアルコキシドも上記加熱処理でＳｉＯ2 とな
るので、以下ＳｉＯ2 を含め、これらを総称してＳｉＯ
2 系化合物という）のうちの１種以上：０．０２〜１
％、を配合し、混合した後、（ｂ） 上記混合粉末に、
酸化性雰囲気中、６００〜１０５０℃の範囲内の所定温
度に所定時間保持の加熱処理を施し、（ｃ） ついで、
上記加熱処理後の混合粉末に、ＳｉＣウイスカー：５〜
３０％、を配合し、混合し、（ｄ） 上記混合粉末に通
常の条件でホットプレス焼結を施して、Ａｌ2 Ｏ3結晶
が板状成長した組織を有するＡｌ2 Ｏ3 基セラミックス
で構成された切削工具を製造する方法に特徴を有するも
のである。The present invention has been made based on the above-mentioned research results. (A) Al 2 O 3 powder, in the following proportions, all of the following proportions of Al 2 O 3 crystals at the time of sintering. As plate-like growth promoting aids, CaCO 3 , BaC
O 3, SrCO 3, Ca ( NO 3) 2, Ba (NO 3)
2 , Sr (NO 3 ) 2 , CaCl 2 , BaCl 2 , Sr
Cl 2 , CaO, BaO, and SrO (carbonates, nitrates, and chlorides among them become oxides in the heat treatment in the subsequent step, and therefore, including the above oxides, these are collectively referred to as metal oxides. Powder of 0.02 to 1%, and SiO 2 powder and alkoxide (this alkoxide also becomes SiO 2 by the above-mentioned heat treatment, so these are collectively referred to as SiO 2 below). SiO
2 type compounds) or more: 0.02-1
%, And after mixing, (b) to the above mixed powder,
In an oxidizing atmosphere, a heat treatment is carried out by holding at a predetermined temperature within a range of 600 to 1050 ° C. for a predetermined time, and (c)
To the mixed powder after the heat treatment, SiC whiskers: 5
30%, mixed and mixed, and (d) hot-press sintering of the mixed powder under normal conditions to form an Al 2 O 3 -based ceramic having a structure in which an Al 2 O 3 crystal has grown in a plate shape. The method is characterized by a method for manufacturing the cutting tool.
【０００６】つぎに、この発明の方法において、配合割
合および加熱処理温度を上記の通りに限定した理由を説
明する。 （ａ） Ａｌ2 Ｏ3 結晶の板状成長促進助剤の配合割合 上記の通り金属酸化物系化合物粉末とＳｉＯ2 系化合物
粉末には、共存した状態で焼結時にＡｌ2 Ｏ3 結晶を板
状に成長させ、もって靭性を向上させる作用があり、し
たがって金属酸化物系化合物粉末およびＳｉＯ2 系化合
物粉末のいずれかでも、その配合割合が０．０２％未満
になると、所望のＡｌ2 Ｏ3 結晶の板状成長促進効果が
得られず、一方その配合割合が、いずれかでも１％を越
えると、Ａｌ2 Ｏ3 結晶に全方位型成長が起るようにな
って板状Ａｌ2 Ｏ3 結晶の形成が困難になり、すぐれた
靭性を確保することができなくなることから、その配合
割合をそれぞれ０．０２〜１％と定めた。Next, the reason why the mixing ratio and the heat treatment temperature are limited as described above in the method of the present invention will be explained. (A) Mixing ratio of plate-like growth promoting auxiliary agent for Al 2 O 3 crystal As described above, the metal oxide-based compound powder and the SiO 2 -based compound powder are coated with Al 2 O 3 crystal during sintering in a coexisting state. Has a function of improving the toughness of the metal oxide compound and improving the toughness thereof. Therefore, if the compounding ratio of either the metal oxide compound powder or the SiO 2 compound powder is less than 0.02%, the desired Al 2 O 3 powder is obtained. If the plate-like growth promoting effect of the crystal is not obtained, and if the compounding ratio exceeds 1% in any case, omnidirectional growth will occur in the Al 2 O 3 crystal and plate-like Al 2 O 3 Since it becomes difficult to form crystals and excellent toughness cannot be ensured, the compounding ratio of each is set to 0.02 to 1%.
【０００７】（ｂ） ＳｉＣウイスカー ＳｉＣウイスカーにはセラミックスの靭性を向上させる
作用があるが、その配合割合が５％未満では所望の靭性
向上効果が得られず、一方その配合割合が３０％を越え
ると、焼結が困難となり、強度低下が著しくなることか
ら、その配合割合を５〜３０％と定めた。(B) SiC whiskers SiC whiskers have the function of improving the toughness of ceramics, but if the compounding ratio is less than 5%, the desired toughness improving effect cannot be obtained, while the compounding ratio exceeds 30%. Then, it becomes difficult to sinter and the strength is significantly reduced.
【０００８】（ｃ） 加熱処理温度 その温度が６００℃未満では、板状成長促進助剤の分解
が不十分なので、ホットプレス焼結時におけるＡｌ2 Ｏ
3 結晶の板状成長が十分に行なわれず、一方その温度が
１０５０℃を越えると、Ａｌ2 Ｏ3 粉末間に凝集が起こ
るようになることから、その温度を６００〜１０５０℃
と定めた。(C) Heat treatment temperature If the temperature is less than 600 ° C., the decomposition of the plate-like growth promoting aid is insufficient, so Al 2 O during hot press sintering is used.
The plate-like growth of 3 crystals is not sufficiently performed, and when the temperature exceeds 1050 ° C, agglomeration occurs between Al 2 O 3 powders, so the temperature is set to 600 to 1050 ° C.
I decided.
【０００９】[0009]
【実施例】つぎに、この発明の方法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０．１〜５μ
ｍの範囲内の平均粒径を有する、各種の金属酸化物系化
合物粉末およびＳｉＯ2 系化合物粉末、並びにＡｌ2 Ｏ
3 粉末、さらに長径：１５〜５０μｍ×短径：０．４〜
２μｍで、アスペクト比が３５〜４０のウイスカーが７
０％を占めるＳｉＣウイスカーを用意し、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
系化合物粉末とを、Ａｌ2 Ｏ3 粉末に表１，２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、表１，２に示される
条件で加熱処理を施し、ついでこれを湿式ボールミルで
スラリーとした後、同じく表１，２に示される割合（こ
れも全体に占める割合）でＳｉＣウイスカーを配合し、
超音波と機械による湿式混合を２時間行ない、乾燥した
後、これに表３，４に示される条件でホットプレス焼結
を施すことにより本発明法１〜１９を実施し、ＪＩＳ・
ＳＮＧＮ１２０４０８のスローアウエイチップ形状をも
ったＡｌ2 Ｏ3 基セラミックス製切削工具を製造した。
また、曲げ強度および破壊靭性値測定用試験片も合せて
製造した。EXAMPLES Next, the method of the present invention will be specifically described by way of Examples. As raw material powder, 0.1 to 5 μm
Various metal oxide compound powders and SiO 2 compound powders having an average particle diameter within the range of m, and Al 2 O
3 powders, further major axis: 15 to 50 μm x minor axis: 0.4 to
7 whiskers with an aspect ratio of 35-40 at 2 μm
A SiC whisker that occupies 0% is prepared, and first, metal oxide compound powder and SiO 2 among these raw material powders are prepared.
The compound powder was mixed with Al 2 O 3 powder at the ratios shown in Tables 1 and 2 (shown by the ratio to the whole) and mixed in a ball mill for 72 hours, and then shown in Tables 1 and 2 in the air. Heat treatment was performed under the conditions, and then this was made into a slurry by a wet ball mill, and then SiC whiskers were blended at the ratios shown in Tables 1 and 2 (also in the total ratio).
After performing wet mixing by ultrasonic waves and a machine for 2 hours and drying, the method 1 to 19 of the present invention was carried out by subjecting this to hot press sintering under the conditions shown in Tables 3 and 4.
An Al 2 O 3 -based ceramics cutting tool having a throwaway tip shape of SNGN120408 was manufactured.
A test piece for measuring flexural strength and fracture toughness was also manufactured.
【００１０】さらに、比較の目的で、原料粉末として、
上記のＡｌ2 Ｏ3 粉末およびＳｉＣウイスカーを用い、
表２に示される配合組成とし、同一の条件で湿式混合
し、乾燥した後、表４に示される条件でホットプレス焼
結を施すことにより従来法１〜３を行ない、同じ形状を
有するＡｌ2 Ｏ3 基セラミックス製切削工具と、同じく
強度および靭性を評価するための曲げ強度および破壊靭
性値測定用試験片をそれぞれ製造した。Further, as a raw material powder, for comparison purposes,
Using the above Al 2 O 3 powder and SiC whiskers,
Al 2 having the same shape as the compounded composition shown in Table 2 was prepared by wet-mixing under the same conditions, drying, and then hot press sintering under the conditions shown in Table 4 to carry out the conventional methods 1 to 3. A cutting tool made of O 3 -based ceramics and a test piece for measuring bending strength and fracture toughness for similarly evaluating strength and toughness were manufactured.
【００１１】[0011]
【表１】 [Table 1]
【００１２】[0012]
【表２】 [Table 2]
【００１３】[0013]
【表３】 [Table 3]
【００１４】[0014]
【表４】 [Table 4]
【００１５】ついで、この結果得られた各種の切削工具
について、 被削材：ＦＣ３０の溝入り丸棒、 切削速度：３００ｍ／min.、 切込み：２mm、 送り：０．２mm／rev.、 切削時間：２０分、 の条件で鋳鉄の連続切削試験を行ない、切刃の逃げ面摩
耗幅を測定した。その測定結果を、表２，３に示した。
なお、表２，３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。Then, with respect to various cutting tools obtained as a result, work material: round bar with FC30 groove, cutting speed: 300 m / min., Depth of cut: 2 mm, feed: 0.2 mm / rev., Cutting time The continuous cutting test of cast iron was carried out under the condition of: 20 minutes, and the flank wear width of the cutting edge was measured. The measurement results are shown in Tables 2 and 3.
In addition, Tables 2 and 3 also show the measurement results of the bending strength and the fracture toughness value.
【００１６】[0016]
【発明の効果】表１〜４に示される結果から、本発明法
１〜１９により製造されたＡｌ2 Ｏ3基セラミックス製
切削工具は、Ａｌ2 Ｏ3 結晶が板状に成長した組織を有
するので、従来法１〜３で製造されたＡｌ2 Ｏ3 基セラ
ミックス製切削工具と同等の高強度を具備した上で、こ
れより一段とすぐれた靭性を有し、この結果鋳鉄の断続
切削で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が明らかである。From the results shown in Tables 1 to 4, the Al 2 O 3 -based ceramic cutting tools produced by the methods 1 to 19 of the present invention have a structure in which Al 2 O 3 crystals grow in a plate shape. Therefore, it has a high strength equivalent to that of the Al 2 O 3 -based ceramics cutting tools manufactured by the conventional methods 1 to 3, and has a toughness far superior to this, and as a result, even in intermittent cutting of cast iron, the cutting edge is It is clear that excellent wear resistance is exhibited for a long period of time without occurrence of chipping or chipping.
【００１７】上述のように、この発明の方法によれば、
例えば鋳鉄の切削は勿論のこと、高靭性が要求される鋳
鉄の断続切削にも切刃に欠損やチッピングの発生なく、
長期に亘ってすぐれた切削性能を発揮するＡｌ2 Ｏ3 基
セラミックス製切削工具を製造することができるのであ
る。As mentioned above, according to the method of the present invention,
For example, not only cutting of cast iron, but also intermittent cutting of cast iron that requires high toughness does not cause chipping or chipping of the cutting edge,
It is possible to manufacture an Al 2 O 3 -based ceramics cutting tool that exhibits excellent cutting performance over a long period of time.
Claims (1)
いずれも全体に占める重量割合で、焼結時の酸化アルミ
ニウム結晶の板状成長促進助剤として、 Ｃａ，Ｂａ，およびＳｒの炭酸塩粉末、硝酸塩粉末、塩
化物粉末、および酸化物粉末のうちの１種以上：０．０
２〜１％と、 酸化けい素粉末およびアルコキシドのうちの１種以上：
０．０２〜１％、を配合し、混合した後、 （ｂ） 上記混合粉末に、酸化性雰囲気中、６００〜１
０５０℃に加熱保持の条件で加熱処理を施し、 （ｃ） ついで、上記加熱処理後の混合粉末に、主体が
ウイスカーからなる炭化けい素：５〜３０％、を配合し
て混合し、 （ｂ） 上記混合粉末にホットプレス焼結を施して、酸
化アルミニウム結晶が板状成長した組織を有するセラミ
ックスで構成された切削工具を形成する、以上（ａ）〜
（ｄ）の基本工程からなることを特徴とする靭性のすぐ
れた酸化アルミニウム基セラミックス製切削工具の製造
法。1. (a) Carbon powder of Ca, Ba, and Sr as a plate-like growth promoting agent for aluminum oxide crystals at the time of sintering, in aluminum oxide powder, all in the following weight ratios: One or more of nitrate powder, chloride powder, and oxide powder: 0.0
2-1% and at least one of silicon oxide powder and alkoxide:
After blending and mixing 0.02 to 1%, (b) 600 to 1 in the oxidizing atmosphere in the mixed powder.
Heat treatment is performed at 050 ° C. under the condition of heating and holding, and (c) Next, the mixed powder after the heat treatment is blended with 5 to 30% of silicon carbide whose main component is whiskers, and (b) ) The mixed powder is subjected to hot press sintering to form a cutting tool made of ceramics having a structure in which aluminum oxide crystals are grown in a plate shape.
A method of manufacturing a cutting tool made of an aluminum oxide-based ceramic having excellent toughness, which comprises the basic step (d).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04134274A JP3082433B2 (en) | 1992-04-27 | 1992-04-27 | Manufacturing method of aluminum oxide based ceramic cutting tool 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 |
|---|---|---|---|
| JP04134274A JP3082433B2 (en) | 1992-04-27 | 1992-04-27 | Manufacturing method of aluminum oxide based ceramic cutting tool with excellent toughness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05301762A true JPH05301762A (en) | 1993-11-16 |
| JP3082433B2 JP3082433B2 (en) | 2000-08-28 |
Family
ID=15124454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04134274A Expired - Fee Related JP3082433B2 (en) | 1992-04-23 | 1992-04-27 | Manufacturing method of aluminum oxide based ceramic cutting tool with excellent toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3082433B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009069770A1 (en) * | 2007-11-28 | 2009-06-04 | Kyocera Corporation | Aluminous sinter, process for producing the same, member for semiconductor production apparatus, member for liquid-crystal-panel production apparatus, and member for dielectric resonator |
| JP2009149501A (en) * | 2007-11-28 | 2009-07-09 | Kyocera Corp | Alumina sintered compact, method for producing the same, member for semiconductor production apparatus, member for liquid-crystal panel production apparatus, and member for dielectric resonator |
| JP2009256174A (en) * | 2008-03-26 | 2009-11-05 | Kyocera Corp | Alumina sintered compact, member for semiconductor production apparatus, member for liquid-crystal-panel production apparatus, and member for dielectric resonator |
| US8247337B2 (en) | 2007-11-28 | 2012-08-21 | Kyocera Corporation | Alumina sintered article |
| US9073773B2 (en) | 2011-03-11 | 2015-07-07 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object, glass overflow forming block, and process for glass object manufacture |
| US9174874B2 (en) | 2011-03-30 | 2015-11-03 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object, glass overflow forming block, and process of forming and using the refractory object |
| US9902653B2 (en) | 2012-01-11 | 2018-02-27 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object and process of forming a glass sheet using the refractory object |
-
1992
- 1992-04-27 JP JP04134274A patent/JP3082433B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009069770A1 (en) * | 2007-11-28 | 2009-06-04 | Kyocera Corporation | Aluminous sinter, process for producing the same, member for semiconductor production apparatus, member for liquid-crystal-panel production apparatus, and member for dielectric resonator |
| JP2009149501A (en) * | 2007-11-28 | 2009-07-09 | Kyocera Corp | Alumina sintered compact, method for producing the same, member for semiconductor production apparatus, member for liquid-crystal panel production apparatus, and member for dielectric resonator |
| US8247337B2 (en) | 2007-11-28 | 2012-08-21 | Kyocera Corporation | Alumina sintered article |
| JP2009256174A (en) * | 2008-03-26 | 2009-11-05 | Kyocera Corp | Alumina sintered compact, member for semiconductor production apparatus, member for liquid-crystal-panel production apparatus, and member for dielectric resonator |
| US9073773B2 (en) | 2011-03-11 | 2015-07-07 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object, glass overflow forming block, and process for glass object manufacture |
| US9714185B2 (en) | 2011-03-11 | 2017-07-25 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object, glass overflow forming block, and process for glass object manufacture |
| US9174874B2 (en) | 2011-03-30 | 2015-11-03 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object, glass overflow forming block, and process of forming and using the refractory object |
| US9796630B2 (en) | 2011-03-30 | 2017-10-24 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object, glass overflow forming block, and process of forming and using the refractory object |
| US9902653B2 (en) | 2012-01-11 | 2018-02-27 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object and process of forming a glass sheet using the refractory object |
| US10590041B2 (en) | 2012-01-11 | 2020-03-17 | Saint-Gobain Ceramics & Plastics, Inc. | Refractory object and process of forming a glass sheet using the refractory object |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3082433B2 (en) | 2000-08-28 |
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