JP2988966B2 - Sialon sintered body, method for producing the same, and gas turbine blade using the same - Google Patents
Sialon sintered body, method for producing the same, and gas turbine blade using the sameInfo
- Publication number
- JP2988966B2 JP2988966B2 JP2152229A JP15222990A JP2988966B2 JP 2988966 B2 JP2988966 B2 JP 2988966B2 JP 2152229 A JP2152229 A JP 2152229A JP 15222990 A JP15222990 A JP 15222990A JP 2988966 B2 JP2988966 B2 JP 2988966B2
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- aln
- sialon
- same
- sialon sintered
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 16
- 229910052691 Erbium Inorganic materials 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 11
- 229910052727 yttrium Inorganic materials 0.000 claims description 11
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、常温および高温にて高強度を有するサイア
ロン焼結体およびその製造方法ならびにこれを用いたガ
スタービン翼に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sialon sintered body having high strength at normal temperature and high temperature, a method for producing the same, and a gas turbine blade using the same.
サイアロン焼結体は、高温強度および耐酸化性に優
れ、かつ熱膨張系数が小さく、耐熱衝撃性が非常に大き
い等の利点があるため、近年各方面の分野に利用されて
いる。Sialon sintered bodies have been used in various fields in recent years because of their advantages such as excellent high-temperature strength and oxidation resistance, small thermal expansion coefficient, and extremely high thermal shock resistance.
サイアロン焼結体としては、一般式Si6-zAlzOzN
8-z（０＜ｚ≦4.2）で示されるβサイアロン焼結体が広
く実用化されている。最近、Mx（Si,Al）12（O,N）
16（０＜ｘ＜2,MはLi,Ca,MgおよびLa,Ceを除く希土類元
素）の一般式で示されるαサイアロン焼結体あるいは上
記βサイアロンとαサイアロンの混相を有するα／β混
相サイアロン焼結体も切削工具等に利用できることが特
公昭56−51153号公報、特公昭58−204875号公報等に開
示され、各分野で用いられるようになってきた。As a sialon sintered body, the general formula Si 6-z Al z O z N
Β-sialon sintered bodies represented by 8-z (0 <z ≦ 4.2) have been widely put to practical use. Recently, Mx (Si, Al) 12 (O, N)
16 (0 <x <2, M is a rare earth element excluding Li, Ca, Mg and La, Ce) α-sialon sintered body represented by the general formula or α / β mixed phase having a mixed phase of β-sialon and α-sialon Japanese Patent Publication No. Sho 56-51153 and Japanese Patent Publication No. Sho 58-204875 disclose that sialon sintered bodies can also be used for cutting tools and the like, and have been used in various fields.
これらサイアロン焼結体のうち、α／β混相サイアロ
ンは、単一相のサイアロン焼結体に比べ、高強度となる
という利点を有していることが特開昭61−91065号等に
より知られている。Among these sialon sintered bodies, it is known from Japanese Patent Application Laid-Open No. 61-91065 and the like that α / β mixed-phase sialon has an advantage of higher strength than a single-phase sialon sintered body. ing.
また、高温強度、靭性および耐酸化性に優れた窒化珪
素系の焼結体を得る方法として、特開昭62−78157号公
報には、AlN＋Al2O3/Si3N4を0.08％未満、Al2O3/AlNを
２％未満と限定した混合物を焼結後、粒界相を高融点の
結晶質に換えること、特開昭62−207766号公報には、Al
2O3/AlNを0.2〜２とし、（Al2O3/AlN）／希土類酸化物
を0.8以下と限定した混合物を焼結することが開示され
ている。As a method for obtaining a silicon nitride-based sintered body having excellent high-temperature strength, toughness, and oxidation resistance, Japanese Patent Application Laid-Open No. 62-78157 discloses that AlN + Al 2 O 3 / Si 3 N 4 contains less than 0.08%, After sintering a mixture in which Al 2 O 3 / AlN is limited to less than 2%, the grain boundary phase is changed to high melting point crystalline.
It is disclosed that a mixture in which 2 O 3 / AlN is set to 0.2 to 2 and (Al 2 O 3 / AlN) / rare earth oxide is limited to 0.8 or less is sintered.
特開昭62−78157号公報、あるいは特開昭62−207766
号公報では、AlN＋Al2O3が８重量％を越える焼結体で
は、高温での耐酸化性および靭性が劣化するものとされ
ていた。JP-A-62-78157 or JP-A-62-207766
According to the publication, a sintered body in which AlN + Al 2 O 3 exceeds 8% by weight deteriorates oxidation resistance and toughness at high temperatures.
また、α／β混相サイアロン焼結体も高温強度はなお
十分ではなく、現在のサイアロン焼結体では、ガスター
ビン静翼に要求される1350℃での最低強度400MPa、ター
ビン動翼に要求される125℃での最低強度600MPaの条件
を満足できるものは得られていない（ガスタービン翼の
要求特性については、セラミックスガスタービン調査報
告書、日本ファインセラミックス協会編,1988.3参
照）。In addition, the high-temperature strength of α / β mixed-phase sialon sintered bodies is still insufficient, and the current sialon sintered bodies require a minimum strength of 400 MPa at 1350 ° C required for gas turbine stationary blades, and a turbine rotor blade. A material that satisfies the condition of a minimum strength of 600 MPa at 125 ° C has not been obtained (for the required characteristics of gas turbine blades, see the Ceramic Gas Turbine Survey Report, edited by Japan Fine Ceramics Association, 1988.3).
本発明は、特にガスタービン翼への適用を目的として
なされたもので、本発明の目的は強度の優れたα／β混
相サイアロン焼結体の高温強度をさらに高めたサイアロ
ン焼結体およびその製造方法ならびにこれを用いたガス
タービン翼を提供することである。The present invention has been made particularly for the application to gas turbine blades, and an object of the present invention is to provide an α / β mixed-phase sialon sintered body having excellent strength and a sialon sintered body with further enhanced high-temperature strength, and production thereof. A method and a gas turbine blade using the same.
本発明は、原子量比がMx（Si,Al）12（O,N）16（０＜
ｘ＜2,MはY,Er,Ybの１種または２種以上）の一般式で示
されるαサイアロン相、Si6-zAlzOzN8-z（０＜ｚ≦4.
2）の一般式で示されるβサイアロン相およびSi,Al,O,
N,M（ＭはY,Er,Ybの１種または２種以上）の少なくとも
１種以上よりなる粒界相で構成されるサイアロン焼結体
であって、前記焼結体は、 ８＜AlN＋Al2O3＜16〔wt％〕 1.2≦AlN/Al2O3≦３ ３＜M2O3＜10〔wt％〕 74＜Si3N4＜89〔wt％〕 を満たす成形体が焼結されてなることを特徴とするサイ
アロン焼結体である。In the present invention, the atomic weight ratio is Mx (Si, Al) 12 (O, N) 16 (0 <
x <2, M is one or more of Y, Er and Yb), α-sialon phase represented by the general formula, Si 6-z Al z O z N 8- z (0 <z ≦ 4.
The β-sialon phase represented by the general formula 2) and Si, Al, O,
A sialon sintered body composed of a grain boundary phase composed of at least one or more of N and M (M is one or two or more of Y, Er and Yb), wherein the sintered body is: 8 <AlN + Al 2 O 3 <16 [wt%] 1.2 ≦ AlN / Al 2 O 3 ≦ 33 3 <M 2 O 3 <10 [wt%] 74 <Si 3 N 4 <89 [wt%] It is a sialon sintered body characterized by being made.
本発明のサイアロン焼結体は、焼結前の成形体の組成
割合が重要で、AlN,Al2O3,M2O3（Ｍ＝Y,Er,Yb）,Si3N4
の４つの化合物の特定の関係を有する組成割合とするこ
とで、本発明の焼結体をα／β混相のサイアロンとし、
特に高温強度の高いものにすることができる。特にAlN
とAl2O3の量、混合比、および焼結性を改善するために
添加するM2O3のＭが特定の元素であることが必要であ
る。In the sialon sintered body of the present invention, the composition ratio of the molded body before sintering is important, and AlN, Al 2 O 3 , M 2 O 3 (M = Y, Er, Yb), Si 3 N 4
By setting the composition ratio of the four compounds to have a specific relationship, the sintered body of the present invention is made into an α / β mixed phase sialon,
In particular, it can have high strength at high temperatures. Especially AlN
It is necessary that M of M 2 O 3 added to improve the amount, mixing ratio, and sinterability of Al 2 O 3 is a specific element.
AlN＋Al2O3量は、安定してα／β混相のサイアロン焼
結体にすること、および特に高温強度を高めるために、
従来の成形体に配合される割合よりも多目にすることが
必須である。その適正範囲は、８＜AlN＋Al2O3＜16であ
る。AlN＋Al2O3量が8wt％、および16％以上であると高
温強度が低下し好ましくない。The amount of AlN + Al 2 O 3 is used to stabilize the α / β mixed-phase sialon sintered body, and particularly to increase the high-temperature strength.
It is indispensable to make the ratio higher than the ratio blended in the conventional molded body. Its proper range is 8 <AlN + Al 2 O 3 <16. If the amount of AlN + Al 2 O 3 is 8 wt% or 16% or more, the high-temperature strength decreases, which is not preferable.
また、AlN/Al2O3の比が1.2未満および３を越えると高
温強度が低下するのでAlN/Al2O3の比は1.2≦AlN/Al2O3
≦３とする。Further, AlN / Al 2 O 3 ratio of AlN / Al 2 O 3 because the ratio of the high-temperature strength is lowered when it exceeds 1.2 and less than 3 1.2 ≦ AlN / Al 2 O 3
≦ 3.
M2O3量は３％以下では、焼結性を改善する効果が少な
く、10％を越えると粒界相の高温強度低下の原因となる
ため好ましくない。If the amount of M 2 O 3 is 3% or less, the effect of improving the sinterability is small, and if it exceeds 10%, the high-temperature strength of the grain boundary phase is reduced, which is not preferable.
また、M2O3のＭを構成する元素をY,Er,Ybに限定した
のは、これらの三元素は他の希土類元素に比べ室温から
高温までの曲げ強度の劣化が少ないことを見出したため
である。Further, the elements constituting M in M 2 O 3 were limited to Y, Er, and Yb because these three elements were found to have less deterioration in bending strength from room temperature to high temperature than other rare earth elements. It is.
以上の理由から、上記範囲に組成を限定した。 For the above reasons, the composition was limited to the above range.
また、本発明は、Si3N4粉末、AlN粉末、Al2O3粉末、M
2O3粉末（ＭはY,Er,Ybの１種また２種以上）を、 ８＜AlN＋Al2O3＜16〔wt％〕 1.2≦AlN/Al2O3≦３ ３＜M2O3＜10〔wt％〕 74＜Si3N4＜89〔wt％〕 を満たすように混合して成形体となし、該成形体を1500
〜2000℃で焼結することを特徴とするサイアロン焼結体
の製造方法である。Further, the present invention relates to Si 3 N 4 powder, AlN powder, Al 2 O 3 powder, M
2 O 3 powder (M is Y, Er, 1 kind or 2 or more Yb) a, 8 <AlN + Al 2 O 3 <16 [wt%] 1.2 ≦ AlN / Al 2 O 3 ≦ 3 3 <M 2 O 3 <10 [wt%] 74 <Si 3 N 4 <89 [wt%]
A method for producing a sialon sintered body, characterized by sintering at 20002000 ° C.
ここで、成形体を構成する各化合物の組成割合の限定
理由は上述した通りである。Here, the reasons for limiting the composition ratio of each compound constituting the molded article are as described above.
また、焼結温度を1500〜2000℃に限定したのは、1500
℃未満では、高圧力をかけたり、高圧のガス中で焼結し
ても十分に緻密な焼結体が得られないためであり、2000
℃を越えるとたとえ加圧N2雰囲気中で焼結する場合でも
Si2N4の分解を抑制できなくなるからである。なお、焼
結の雰囲気については、窒素ガス雰囲気が望ましく、窒
素ガスの圧力は常圧でも高圧でも構わない。In addition, the sintering temperature was limited to
If the temperature is lower than ℃, a sufficiently dense sintered body cannot be obtained even if high pressure is applied or sintering is performed in a high-pressure gas.
Exceeding ℃, even when sintering in a pressurized N 2 atmosphere
This is because the decomposition of Si 2 N 4 cannot be suppressed. The sintering atmosphere is preferably a nitrogen gas atmosphere, and the pressure of the nitrogen gas may be normal pressure or high pressure.
上述したサイアロン焼結体は、1200〜1350℃以上での
高温強度が優れ、特にガスタービン翼の材料として好ま
しい。The sialon sintered body described above has excellent high-temperature strength at 1200 to 1350 ° C. or higher, and is particularly preferable as a material for a gas turbine blade.
以下、本発明の実施例に基づいてさらに詳細に説明す
る。Hereinafter, the present invention will be described in more detail based on embodiments.
実施例１ Si3N4粉末（粒径0.7μm,α化率93％）、AlN粉末（粒
径１μm,純度99％）、Al2O3粉末（粒径0.5μm,純度99.5
％）、Yb2O3粉末（粒径1.5μｍ、純度99.9％）を用い
て、第１表に示すような種々の組成の配合を行なった。
これら粉末を混合して成形体に成形の後、９気圧の窒素
雰囲気中において、1780℃×7Hrの条件で焼結を行なっ
た。得られた焼結体の常温での曲げ強度および1300℃で
の曲げ強度の特性を第１図に示す。Example 1 Si 3 N 4 powder (particle diameter 0.7 μm, α conversion 93%), AlN powder (particle diameter 1 μm, purity 99%), Al 2 O 3 powder (particle diameter 0.5 μm, purity 99.5)
%) And Yb 2 O 3 powder (particle size: 1.5 μm, purity: 99.9%), and various compositions as shown in Table 1 were blended.
After mixing these powders to form a compact, sintering was performed at 1780 ° C. × 7 hours in a nitrogen atmosphere at 9 atm. FIG. 1 shows the characteristics of the bending strength at room temperature and the bending strength at 1300 ° C. of the obtained sintered body.
本実施例では、AlNとAl2O3の量および重量比の影響を
明らかにするために、Yb2O3の量は一定（6.9wt％）にし
てある。第１表の比較例とは、AlN＋Al2O3の合計量また
はもよびAlN/Al2O3の比が本発明の範囲外にあるもので
ある。In the present embodiment, the amount of Yb 2 O 3 is kept constant (6.9 wt%) in order to clarify the influence of the amounts of AlN and Al 2 O 3 and the weight ratio. The comparative example of Table 1, the total amount or even and the ratio of AlN / Al 2 O 3 of AlN + Al 2 O 3 is one that is outside the scope of the present invention.
第１表の強度の評価より、AlN/Al2O3の重量比がAlN/A
l2O31.2〜３を満たし、かつAlN＋Al2O3の合計量が8wt％
を越え、16wt％を満たすときに高温時の強度劣化が少な
く、高い高温強度が得られることがわかる。According to the strength evaluation in Table 1, the weight ratio of AlN / Al 2 O 3 was AlN / A.
l 2 O 3 1.2 to 3 is satisfied, and the total amount of AlN + Al 2 O 3 is 8 wt%
It can be seen that when the content exceeds 16% by weight, the strength degradation at high temperatures is small and high high-temperature strength can be obtained.
実施例２ 実施例１と同様の粉末および各種希土類酸化物粉末
（粒径1.0〜1.5μｍ、純度99.9％）を用いて、種々の組
成の配合を行なった。ここでAlN量、Al2O3量はそれぞれ
7.0,4.0wt％一定とした。これら粉末を混合、成形の
後、1800℃×5Hr、常圧窒素雰囲気中で焼結した。得ら
れた焼結体の特性を第２表に示す。 Example 2 Using the same powder as in Example 1 and various rare earth oxide powders (particle diameter: 1.0 to 1.5 μm, purity: 99.9%), various compositions were blended. Here, the amount of AlN and the amount of Al 2 O 3
7.0, 4.0 wt% constant. After mixing and molding these powders, they were sintered at 1800 ° C. × 5 hours in a nitrogen atmosphere at normal pressure. Table 2 shows the properties of the obtained sintered body.
これより、希土類酸化物としてY,Er,Ybの１種または
２種以上を選び、かつ希土類酸化物量が3wt％を越え10w
t％未満のときに高い高温強度が得られガスタービン翼
等に好適であることがわかる。また、Y,Er,Ybの酸化物
を添加した場合には、Nd,Sm,Eu,Dyの酸化物を添加した
場合より、高温における曲げ強度の低下が少ないことが
わかる。From this, one or more of Y, Er, and Yb are selected as rare earth oxides, and the amount of rare earth oxide exceeds 3 wt% and exceeds 10 wt.
It can be seen that high temperature strength is obtained when the content is less than t%, which is suitable for gas turbine blades and the like. Also, it can be seen that when the oxides of Y, Er, and Yb are added, the bending strength at high temperatures is less reduced than when the oxides of Nd, Sm, Eu, and Dy are added.
以上の実施例より、本発明の製造方法で製造し、Y,E
r,Ybの１種または２種以上を固溶したαサイアロン相、
βサイアロン相および粒界相からなるサイアロン焼結体
は、特定の組成範囲の成形体を焼結したことを特徴とし
ており、著しく優れた高温強度が得られることが明らか
である。 From the above examples, manufactured by the manufacturing method of the present invention, Y, E
α-sialon phase in which one or more of r and Yb are dissolved,
The sialon sintered body composed of the β-sialon phase and the grain boundary phase is characterized by sintering a compact having a specific composition range, and it is clear that extremely excellent high-temperature strength can be obtained.
なお、本実施例以外の焼結方法、例えばホットプレ
ス、HIPなどによっても同等の特性を得ることができ
る。The same characteristics can be obtained by a sintering method other than this example, for example, hot pressing, HIP, or the like.
本発明によれば、α／β混相サイアロンにおいて、α
サイアロン中への固溶元素として、Y,Er,Ybを選び、焼
結体を構成する化合物のうち、特に配合時のAlN,Al2O3
の量および比率を選ぶことにより、従来より著しく高温
強度の高いサイアロン焼結体が得られる。これにより、
ガスタービン翼をはじめとする高温用途へのα／β混相
サイアロンの適用が可能となる。According to the present invention, in an α / β mixed-phase sialon, α
Y, Er, and Yb are selected as solid solution elements in Sialon, and among the compounds constituting the sintered body, AlN, Al 2 O 3
By selecting the amount and ratio, a sialon sintered body having significantly higher high-temperature strength than before can be obtained. This allows
It becomes possible to apply α / β mixed-phase sialon to high temperature applications such as gas turbine blades.
Claims (3)
ｘ＜2,MはY,Er,Ybの１種または２種以上）の一般式で示
されるαサイアロン相、Si6-zAlzOzN8-z（０＜ｚ≦4.
2）の一般式で示されるβサイアロン相およびSi,Al,O,
N,M（ＭはY,Er,Ybの１種または２種以上）の少なくとも
１種以上よりなる粒界相で構成されるサイアロン焼結体
であって、前記焼結体は、 ８＜AlN＋Al2O3＜16〔wt％〕 1.2≦AlN/Al2O3≦３ ３＜M2O3＜10〔wt％〕 74＜Si3N4＜89〔wt％〕 を満たす成形体が焼結されてなることを特徴とするサイ
アロン焼結体。An atomic weight ratio of Mx (Si, Al) 12 (O, N) 16 (0 <
x <2, M is one or more of Y, Er, Yb), α-sialon phase represented by the general formula, Si 6-z Al z O z N 8-z (0 <z ≦ 4.
The β-sialon phase represented by the general formula 2) and Si, Al, O,
A sialon sintered body composed of a grain boundary phase composed of at least one or more of N and M (M is one or two or more of Y, Er and Yb), wherein the sintered body is: 8 <AlN + Al 2 O 3 <16 [wt%] 1.2 ≦ AlN / Al 2 O 3 ≦ 33 3 <M 2 O 3 <10 [wt%] 74 <Si 3 N 4 <89 [wt%] A sialon sintered body characterized by being made.
〜2000℃で焼結することを特徴とするサイアロン焼結体
の製造方法。2. A Si 3 N 4 powder, AlN powder, Al 2 O 3 powder, M 2 O 3 powder (M is Y, Er, 1 or two or more Yb) a, 8 <AlN + Al 2 O 3 < 16 [wt%] 1.2 ≦ AlN / Al 2 O 3 ≦ 33 3 <M 2 O 3 <10 [wt%] 74 <Si 3 N 4 <89 [wt%] , The molded body 1500
A method for producing a sialon sintered body, characterized by sintering at a temperature of 20002000 ° C.
したことを特徴とするガスタービン翼。3. A gas turbine blade comprising the sialon sintered body according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2152229A JP2988966B2 (en) | 1990-06-11 | 1990-06-11 | Sialon sintered body, method for producing the same, and gas turbine blade using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2152229A JP2988966B2 (en) | 1990-06-11 | 1990-06-11 | Sialon sintered body, method for producing the same, and gas turbine blade using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0446062A JPH0446062A (en) | 1992-02-17 |
| JP2988966B2 true JP2988966B2 (en) | 1999-12-13 |
Family
ID=15535913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2152229A Expired - Lifetime JP2988966B2 (en) | 1990-06-11 | 1990-06-11 | Sialon sintered body, method for producing the same, and gas turbine blade using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2988966B2 (en) |
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|---|---|---|---|---|
| US6693054B1 (en) | 2000-11-28 | 2004-02-17 | Kennametal Inc. | Method of making SiAlON containing ytterbium |
| US7049256B2 (en) | 2000-11-28 | 2006-05-23 | Kennametal Inc. | SiAlON containing ytterbium and method of making |
| US7094717B2 (en) | 2000-11-28 | 2006-08-22 | Kennametal Inc. | SiAlON containing ytterbium and method of making |
| US7223709B2 (en) | 2005-02-09 | 2007-05-29 | Kennametal Inc. | Method of making a SiAION ceramic |
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| JPH08119743A (en) * | 1994-10-19 | 1996-05-14 | Hitachi Metals Ltd | Silicon nitride sintered compact excellent in strength at high temperature and its production and member for metal-melting bath |
| US5618768A (en) * | 1995-04-07 | 1997-04-08 | Honda Giken Kogyo Kabushiki Kaisha | Sintered body of silicon nitride and composite sintered body of silicon nitride and silicon carbide |
| JP2001163674A (en) * | 1999-11-15 | 2001-06-19 | Ngk Insulators Ltd | Silicon nitride sintered compact and method of producing the same |
| CN101087670B (en) * | 2004-12-22 | 2011-07-20 | 日本特殊陶业株式会社 | Saran ceramic inserts and cutting tools equipped with such inserts |
| KR102328802B1 (en) * | 2015-04-24 | 2021-11-18 | 대구텍 유한책임회사 | SiAlON composite and cutting tools made thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6693054B1 (en) | 2000-11-28 | 2004-02-17 | Kennametal Inc. | Method of making SiAlON containing ytterbium |
| US6964933B2 (en) | 2000-11-28 | 2005-11-15 | Kennametal Inc. | SiAlON containing ytterbium and method of making |
| US7049256B2 (en) | 2000-11-28 | 2006-05-23 | Kennametal Inc. | SiAlON containing ytterbium and method of making |
| US7094717B2 (en) | 2000-11-28 | 2006-08-22 | Kennametal Inc. | SiAlON containing ytterbium and method of making |
| US7223709B2 (en) | 2005-02-09 | 2007-05-29 | Kennametal Inc. | Method of making a SiAION ceramic |
| US7309673B2 (en) | 2005-02-09 | 2007-12-18 | Kennametal Inc. | SiAlON ceramic and method of making the same |
| EP2511248A2 (en) | 2005-02-09 | 2012-10-17 | Kennametal, Inc. | SiAion ceramic and method of making the same |
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| Publication number | Publication date |
|---|---|
| JPH0446062A (en) | 1992-02-17 |
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