JP2001348654A - Al OXIDE-DISPERSED Fe-BASED SINTERED ALLOY EXCELLENT IN WEAR RESISTANCE AND ITS PRODUCTION METHOD - Google Patents
Al OXIDE-DISPERSED Fe-BASED SINTERED ALLOY EXCELLENT IN WEAR RESISTANCE AND ITS PRODUCTION METHODInfo
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- dispersed
- oxide
- sintered alloy
- wear resistance
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、素地から硬質相
が脱落することのない耐摩耗性に優れたＡｌ系酸化物分
散Ｆｅ基焼結合金およびその製造方法に関するものであ
り、このＡｌ系酸化物分散Ｆｅ基焼結合金は、バルブシ
ート、タペット、ピストンの耐摩環など耐摩耗性を必要
とする各種摺動部品の製造に適するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an Al-based oxide-dispersed Fe-based sintered alloy excellent in abrasion resistance without a hard phase falling off from a substrate and a method for producing the same. The material-dispersed Fe-based sintered alloy is suitable for manufacturing various sliding parts requiring wear resistance such as valve seats, tappets, and wear rings of pistons.
【０００２】[0002]
【従来の技術】一般に、バルブシート、タペット、ピス
トンの耐摩環など耐摩耗性を必要とする各種摺動部材と
してＦｅ基合金素地中に硬質相としてアルミナを分散さ
せた組織のＦｅ基焼結合金は知られており、この合金は
Ｆｅ基合金粉末とアルミナ粉末を混合し、成形し、燒結
して得られることも知られている。2. Description of the Related Art Generally, Fe-based sintered alloys having a structure in which alumina is dispersed as a hard phase in an Fe-based alloy base material are used as various sliding members requiring wear resistance such as wear resistance of valve seats, tappets and pistons. It is also known that this alloy is obtained by mixing an Fe-based alloy powder and an alumina powder, molding and sintering.
【０００３】[0003]
【発明が解決しようとする課題】しかし、この従来のア
ルミナ分散Ｆｅ基焼結合金は、硬い硬質相のアルミナ粉
末が素地中に分散するために初期の耐摩耗性には優れて
いるが、高負荷荷重下での摩耗がある程度進行すると、
アルミナ粉末が素地から脱落し始め、脱落したアルミナ
粉末がＦｅ基焼結合金自身を摩耗させると共に相手材を
も摩耗し、ある時点から急激に摩耗が進行するという欠
点があり、長期間の耐摩耗性に問題があった。However, this conventional alumina-dispersed Fe-based sintered alloy is excellent in initial wear resistance because alumina powder of a hard hard phase is dispersed in a base material. If the wear under the applied load progresses to some extent,
Alumina powder starts to fall off from the base material, and the dropped alumina powder wears the Fe-based sintered alloy itself and also wears the mating material, and has a drawback that abrasion progresses rapidly from a certain point, and has a long-term wear resistance. There was a problem with sex.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明者らは、
上述のような観点から、長期間、高負荷荷重下での耐摩
耗性を維持することができるＦｅ基焼結合金を得るべく
研究を行った結果、（ａ）素地中にＦｅとＡｌの複合酸
化物が硬質相として分散している組織を有するＡｌ系酸
化物分散Ｆｅ基焼結合金は、摩耗が進行してもＦｅとＡ
ｌの複合酸化物が素地から脱落することが無いためにＦ
ｅ基焼結合金自身および相手材を摩耗させることが少な
く、したがって長期に亘って耐摩耗性を維持することが
できる、（ｂ）このＦｅとＡｌの複合酸化物が硬質相と
して分散している組織を有するＡｌ系酸化物分散Ｆｅ基
焼結合金は、Ｆｅ酸化物粉末、Ｆｅ粉末、およびＡｌある
いはＡｌ合金粉末を配合し混合して得られた圧粉体をホ
ットプレスすることによっても得られるが、Ｆｅ酸化物
粉末、Ｆｅ粉末、およびＡｌあるいはＡｌ合金粉末を配合
し混合して得られた混合粉末の圧粉体を通電プレスによ
り熱エネルギーを負荷することによっても得られ、ホッ
トプレスまたは通電プレスにより得られたＦｅ基焼結合
金素の地中に分散するＦｅとＡｌの複合酸化物は、素地
の結晶粒界に断面線状、すなわち素地の結晶粒界に断面
網目状に分散する、などの知見を得たのである。Means for Solving the Problems Accordingly, the present inventors have:
From the above viewpoints, a study was conducted to obtain a Fe-based sintered alloy capable of maintaining the wear resistance under a high load for a long period of time, and as a result, (a) a composite of Fe and Al An Al-based oxide-dispersed Fe-based sintered alloy having a structure in which an oxide is dispersed as a hard phase is characterized in that Fe and A
Since the composite oxide of l does not fall off the substrate,
The e-based sintered alloy itself and the mating material are less likely to be worn, so that the wear resistance can be maintained for a long period of time. (b) The composite oxide of Fe and Al is dispersed as a hard phase An Al-based oxide-dispersed Fe-based sintered alloy having a structure can also be obtained by hot pressing a green compact obtained by blending and mixing Fe oxide powder, Fe powder, and Al or Al alloy powder. Can also be obtained by applying heat energy to a green compact of a mixed powder obtained by blending and mixing Fe oxide powder, Fe powder, and Al or Al alloy powder by hot pressing or hot pressing. The composite oxide of Fe and Al dispersed in the ground of the Fe-based sintered alloy obtained by pressing is dispersed in a cross-sectional line shape at the crystal grain boundaries of the base material, that is, in a cross-sectional network shape at the crystal grain boundaries of the base material. That, we had obtained the knowledge of such.
【０００５】この発明は、かかる知見にもとづいて成さ
れたものであって、（１）素地中にＦｅとＡｌの複合酸
化物が硬質相として分散している組織を有する耐摩耗性
に優れたＡｌ系酸化物分散Ｆｅ基焼結合金、（２）モル
比でＡｌ：１０〜４５％、Ｏ：３〜３０％、残部：Ｆｅ
および不可避不純物からなる成分組成、並びに素地の結
晶粒界にＦｅとＡｌの複合酸化物が硬質相として分散し
ている組織を有する耐摩耗性に優れたＡｌ系酸化物分散
Ｆｅ基焼結合金、（３）モル比でＡｌ：１０〜４５％、
Ｏ：３〜３０％、残部：Ｆｅおよび不可避不純物からな
る成分組成、並びに素地の結晶粒界に断面線状のＦｅと
Ａｌの複合酸化物が硬質相として分散している組織を有
する耐摩耗性に優れたＡｌ系酸化物分散Ｆｅ基焼結合
金、（４）モル比でＡｌ：１０〜４５％、Ｏ：３〜３０
％、残部：Ｆｅおよび不可避不純物からなる成分組成と
なるようにＦｅ酸化物粉末、Ｆｅ粉末、およびＡｌあるい
はＡｌ合金粉末を配合し混合して得られた混合粉末の圧
粉体に熱エネルギーを負荷する耐摩耗性に優れたＡｌ系
酸化物分散Ｆｅ基焼結合金の製造方法、に特徴を有する
ものである。The present invention has been made on the basis of such findings, and (1) has excellent wear resistance having a structure in which a composite oxide of Fe and Al is dispersed as a hard phase in a base material. Al-based oxide-dispersed Fe-based sintered alloy, (2) Al: 10 to 45%, O: 3 to 30% by mole ratio, balance: Fe
And an Al-based oxide-dispersed Fe-based sintered alloy excellent in wear resistance having a composition in which Fe and Al composite oxides are dispersed as a hard phase in the crystal grain boundaries of the base material, (3) Al: 10 to 45% by mole ratio,
O: 3 to 30%, balance: component composition consisting of Fe and unavoidable impurities, and wear resistance having a structure in which a composite oxide of Fe and Al having a linear cross section is dispersed as a hard phase at a crystal grain boundary of the base material. Al-based oxide-dispersed Fe-based sintered alloy excellent in Al, (4) Al: 10 to 45% by mole ratio, O: 3 to 30
%, Balance: heat energy is applied to a green compact of a mixed powder obtained by blending and mixing Fe oxide powder, Fe powder, and Al or Al alloy powder so as to have a component composition of Fe and unavoidable impurities. A method for producing an Al-based oxide-dispersed Fe-based sintered alloy having excellent wear resistance.
【０００６】この発明の耐摩耗性に優れたＡｌ系酸化物
分散Ｆｅ基焼結合金は、前述のように、Ｆｅ酸化物粉
末、Ｆｅ粉末、およびＡｌあるいはＡｌ合金粉末を配合し
混合して得られた圧粉体をホットプレスすることによっ
て熱エネルギーを負荷しＦｅ酸化物とＡｌの間の酸化・
還元反応を生じせしめて得られる。しかし、ホットプレ
スのように長時間熱エネルギーを負荷すると主たる生成
酸化物がＡｌ2Ｏ3となりやすく、Ａｌ2Ｏ3が多く生成す
ると相手攻撃性を増すところから、Ｆｅ酸化物粉末、Ｆ
ｅ粉末、およびＡｌあるいはＡｌ合金粉末を配合し混合
して得られた混合粉末の圧粉体に通電プレスにより熱エ
ネルギーを負荷してＦｅ酸化物とＡｌあるいはＡｌ合金
の間の酸化・還元反応を生じせしめる方が短時間に製造
できるとともに、Ａｌ2Ｏ3の生成も抑制できるので一層
好ましい。Ｆｅ酸化物粉末、Ｆｅ粉末、およびＡｌあるい
はＡｌ合金粉末を配合し混合して得られた圧粉体にホッ
トプレスまたは通電プレスによって熱エネルギーを負荷
すると、Ｆｅ酸化物粉末とＡｌとの間に酸化・還元反応
が生じ、ＦｅとＡｌの複合酸化物が素地の結晶粒界に沿
って主に生成し、ＦｅとＡｌの複合酸化物が素地の粒界
に断面線状または断面網目状に分散した組織を生成す
る。前記素地の結晶粒界に沿って生成する酸化物は、主
としてＦｅとＡｌの複合酸化物であるが、その他に微量
のＡｌ2Ｏ3、ＡｌＯ，Ｆｅ2Ｏ3などの酸化物も混じって
いる。この熱エネルギーの負荷によって形成されたＦｅ
とＡｌの複合酸化物はＦｅ基焼結合金素地との密着性が
優れており、摩耗中に脱落することがなく、したがっ
て、長時間の摩耗に対してもアルミナ硬質相のごときあ
る時点から急激に摩耗が進行するようなことはない。The Al-based oxide-dispersed Fe-based sintered alloy having excellent wear resistance according to the present invention is obtained by blending and mixing Fe oxide powder, Fe powder, and Al or Al alloy powder as described above. Heat energy is applied by hot pressing the green compact, and oxidation between Fe oxide and Al
It is obtained by causing a reduction reaction. However, the major product oxide when the load for a long time heat energy as hot pressing tends to become Al 2 O 3, from where the increase counterpart material when the Al 2 O 3 often produce, Fe oxide powder, F
The thermal energy is applied to the green compact of the mixed powder obtained by blending and mixing the e-powder and the Al or Al alloy powder to apply the heat energy by an electric current press to perform the oxidation / reduction reaction between the Fe oxide and the Al or Al alloy. The generation is more preferable because the production can be performed in a short time and the generation of Al 2 O 3 can be suppressed. When thermal energy is applied to a green compact obtained by blending and mixing Fe oxide powder, Fe powder, and Al or Al alloy powder by hot pressing or current pressing, oxidation occurs between the Fe oxide powder and Al. A reduction reaction occurs, and a composite oxide of Fe and Al is mainly generated along the crystal grain boundary of the base, and the composite oxide of Fe and Al is dispersed in a cross-sectional line or a cross-sectional network at the boundary of the base. Generate an organization. The oxides formed along the crystal grain boundaries of the base are mainly composite oxides of Fe and Al, but also contain a small amount of oxides such as Al 2 O 3 , AlO, and Fe 2 O 3 . . Fe formed by this thermal energy load
The composite oxide of Al and Al has excellent adhesion to the Fe-based sintered alloy base material and does not fall off during abrasion. The wear does not progress.
【０００７】この発明の耐摩耗性に優れたＡｌ系酸化物
分散Ｆｅ基焼結合金は、モル比でＡｌ：１０〜４５％、
Ｏ：３〜３０％、残部：Ｆｅおよび不可避不純物からな
る成分組成を有することが好ましく、以下にその限定理
由を説明する。The Al-based oxide-dispersed Fe-based sintered alloy having excellent wear resistance according to the present invention has a molar ratio of Al: 10 to 45%,
It is preferable to have a component composition consisting of O: 3 to 30% and the balance: Fe and unavoidable impurities. The reason for the limitation will be described below.
【０００８】Ａｌ：Ａｌは、酸化物となり、耐摩耗性を
向上させると共にＦｅ素地中に固溶し、素地の耐摩耗性
と強度を高める作用を有するが、その含有量が１０モル
％未満では十分な効果が得られず、一方、４５モル％を
越えて含有させると靭性を低下させるので好ましくな
い。したがって、この発明のＡｌ系酸化物分散Ｆｅ基焼
結合金に含まれるＡｌは１０〜４５モル％に定めた。一
層好ましい範囲は２０〜４０モル％である。Al: Al forms an oxide, improves the wear resistance, and forms a solid solution in the Fe base material, thereby enhancing the wear resistance and strength of the base material. Sufficient effects cannot be obtained. On the other hand, if the content exceeds 45 mol%, the toughness decreases, which is not preferable. Therefore, the Al content in the Al-based oxide-dispersed Fe-based sintered alloy of the present invention is set to 10 to 45 mol%. A more preferred range is from 20 to 40 mol%.
【０００９】Ｏ（酸素）：Ｏは、酸化物となり、耐摩耗
性を向上させ、また、素地を酸化せしめることにより耐
摩耗性、自己潤浸性および耐腐食性を高める作用を有す
るが、３モル％未満では十分な効果が得られず、一方、
３０モル％を越えると靭性が低下するので好ましくな
い。したがって、この発明の耐摩耗性に優れたＡｌ系酸
化物分散Ｆｅ基焼結合金に含まれるＯは、３〜３０モル
％に定めた。一層好ましい範囲は５〜２５モル％であ
る。O (oxygen): O becomes an oxide, improves abrasion resistance, and has an effect of enhancing abrasion resistance, self-infiltration property and corrosion resistance by oxidizing a substrate. If the amount is less than mol%, a sufficient effect cannot be obtained.
If it exceeds 30 mol%, the toughness is undesirably reduced. Therefore, the amount of O contained in the Al-based oxide-dispersed Fe-based sintered alloy excellent in wear resistance of the present invention is set to 3 to 30 mol%. A more preferred range is from 5 to 25 mol%.
【００１０】[0010]
【発明の実施の形態】実施例 平均粒径：５μｍのＦｅ粉末、平均粒径：３５μｍのＡ
ｌ粉末、平均粒径：５μｍのＦｅ2Ｏ3粉末を用意し、こ
れら粉末を表１に示される割合で配合し、混合し、金型
成形して外径：４２ｍｍ、内径：３４ｍｍ、高さ：１０
ｍｍの寸法を有する筒状圧粉体を作製した。BEST MODE FOR CARRYING OUT THE INVENTION Example Fe powder having an average particle size of 5 μm, A having an average particle size of 35 μm.
1 powder and an average particle diameter of 5 μm Fe 2 O 3 powder were prepared, and these powders were blended in a ratio shown in Table 1, mixed, and molded into a mold to form an outer diameter: 42 mm, an inner diameter: 34 mm, and a height. : 10
A cylindrical green compact having a size of mm was produced.
【００１１】この圧粉体を７８ＭＰａ の圧力で加圧し
ながら表１に示される電流密度の電流を表１に示される
時間通電し、本発明筒状燒結体合金（以下、本発明焼結
合金という）１〜１０を作製した。得られた本発明焼結
合金１〜１０を機械加工によりバルブシートに成形し
た。本発明焼結合金１〜１０の組織をＥＰＭＡおよびＸ
ＰＳで観察したところ、素地の結晶粒界にＦｅＡｌ2Ｏ4
が最も多く見られ、その他に微量ながらＡｌ2Ｏ3、Ａｌ
Ｏ，Ｆｅ2Ｏ3などその他の酸化物が混じっていることが
分かった。[0011] This compact is 78MPa A current having a current density shown in Table 1 was applied for an amount of time shown in Table 1 while pressurizing at a pressure of, and cylindrical sintered alloys of the present invention (hereinafter, referred to as sintered alloys of the present invention) 1 to 10 were produced. The obtained sintered alloys 1 to 10 of the present invention were formed into valve seats by machining. EPMA and X
Observation with PS revealed that FeAl 2 O 4
Is most often seen, and in addition to Al 2 O 3 and Al
It was found that other oxides such as O and Fe 2 O 3 were mixed.
【００１２】従来例１ さらに比較のために、平均粒径：５μｍのＡｌ2Ｏ3粉末
および平均粒径：５μｍのＦｅ粉末を用意し、これら粉
末を表１に示される割合に配合し混合したのち外径：４
２ｍｍ、内径：３４ｍｍ、高さ：１０ｍｍの寸法を有す
る筒状圧粉体を作製し、この圧粉体を黒鉛型に装入し、
温度：９００℃、圧力：７８ＭＰａ の圧力で加圧しな
がら１２０分間保持することにより従来筒状燒結体合金
（以下、従来焼結合金という）を作製した。得られた従
来焼結合金を機械加工してバルブシートを作製した。Conventional Example 1 For comparison, Al 2 O 3 powder having an average particle diameter of 5 μm and Fe powder having an average particle diameter of 5 μm were prepared, and these powders were blended and mixed in the proportions shown in Table 1. Later outer diameter: 4
A cylindrical green compact having dimensions of 2 mm, an inner diameter of 34 mm, and a height of 10 mm was prepared, and the green compact was charged into a graphite mold.
Temperature: 900 ° C, pressure: 78MPa A conventional cylindrical sintered body alloy (hereinafter, referred to as a conventional sintered alloy) was prepared by holding for 120 minutes while applying pressure at a pressure of 5 ° C. The obtained conventional sintered alloy was machined to produce a valve seat.
【００１３】このようにして本発明焼結合金１〜１０お
よび従来焼結合金から得られたバルブシートをそれぞれ
内部が冷却されている治具に圧入し、ＳＵＨ３６からな
るバルブの傘部分を９００℃に保持したバルブを用い、
ガソリン燃焼雰囲気中で着座荷重：６５ｋｇ、バルブ着
座回数：３０００回／分の条件で８時間試験を行ない、
本発明焼結合金１〜１０および従来焼結合金から得られ
たバルブシートの最大摩耗深さを測定し、さらにその相
手材であるバルブの最大摩耗深さをも測定し、その結果
を表１に示した。[0013] The valve seats obtained from the sintered alloys 1 to 10 of the present invention and the conventional sintered alloy in this manner are respectively pressed into jigs whose interiors are cooled, and the umbrella portion of the valve made of SUH36 is heated to 900 ° C. Using the valve held at
In a gasoline combustion atmosphere, a test was conducted for 8 hours under the conditions of a seating load: 65 kg, a valve seating frequency: 3000 times / minute,
The maximum wear depths of the valve seats obtained from the sintered alloys 1 to 10 of the present invention and the conventional sintered alloys were measured, and the maximum wear depth of the valve as a counterpart material was also measured. It was shown to.
【００１４】[0014]
【表１】 [Table 1]
【００１５】表１に示される結果から、本発明焼結合金
１〜１０からなるバルブシートは従来焼結合金からなる
バルブシートに比べて最大摩耗深さが小さく、さらに相
手材であるバルブの最大摩耗深さも小さいところから、
長時間摩耗状態にあっても急激な摩耗が発生せず、した
がって相手攻撃性が小さく、かつ耐摩耗性に優れている
ことが分かる。From the results shown in Table 1, the maximum wear depth of the valve seats made of the sintered alloys 1 to 10 of the present invention is smaller than that of the valve seat made of the conventional sintered alloy. Since the wear depth is small,
It can be seen that no rapid abrasion occurs even in the long-time abrasion state, so that the opposing aggressiveness is small and the abrasion resistance is excellent.
【００１６】[0016]
【発明の効果】上述のように、この発明のＡｌ系酸化物
分散Ｆｅ基焼結合金は、耐摩耗性が優れることによりバ
ルブシート、ピストンリングの耐摩環、タペットなどの
特性を長時間維持することができ、自動車の高性能化、
高燃費化および低公害化に対処するために開発されたエ
ンジンの性能を長時間維持することができるなど、産業
上優れた効果をもたらすものである。As described above, the Al-based oxide-dispersed Fe-based sintered alloy of the present invention has excellent wear resistance, and thus maintains the properties of the valve seat, the wear resistance of the piston ring, and the tappet for a long time. Can improve the performance of cars,
This has excellent industrial effects, such as maintaining the performance of an engine developed to cope with higher fuel efficiency and lower pollution for a long time.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ２２Ｃ 38/06 Ｃ２２Ｃ 38/06 (72)発明者 石井 義成 埼玉県大宮市北袋町１−297 三菱マテリ アル株式会社総合研究所内 (72)発明者 森本 耕一郎 埼玉県大宮市北袋町１−297 三菱マテリ アル株式会社総合研究所内 Ｆターム(参考） 4K018 AA25 AB01 AC01 BA08 BA11 BA13 BA20 DA13 EA02 EA22──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) C22C 38/06 C22C 38/06 (72) Inventor Yoshinari Ishii 1-297 Kitabukurocho, Omiya City, Saitama Prefecture Mitsubishi Materia Within the Research Institute, Inc. (72) Inventor Koichiro Morimoto 1-297, Kitabukuro-cho, Omiya-shi, Saitama F-term (Reference) 4K018 AA25 AB01 AC01 BA08 BA11 BA13 BA20 DA13 EA02 EA22
Claims (5)
として分散している組織を有することを特徴とする耐摩
耗性に優れたＡｌ系酸化物分散Ｆｅ基焼結合金。1. An Al-based oxide-dispersed Fe-based sintered alloy excellent in wear resistance, characterized in that it has a structure in which a composite oxide of Fe and Al is dispersed as a hard phase in a base material.
０％、残部：Ｆｅおよび不可避不純物からなる成分組
成、並びに素地の結晶粒界にＦｅとＡｌの複合酸化物が
硬質相として分散している組織を有することを特徴とす
る耐摩耗性に優れたＡｌ系酸化物分散Ｆｅ基焼結合金。2. Al: 10 to 45%, O: 3 to 3 by molar ratio.
0%, balance: component composition consisting of Fe and unavoidable impurities, and excellent wear resistance characterized by having a structure in which a composite oxide of Fe and Al is dispersed as a hard phase at the crystal grain boundaries of the base material. Al-based oxide dispersed Fe-based sintered alloy.
０％、残部：Ｆｅおよび不可避不純物からなる成分組
成、並びに素地の結晶粒界に断面線状のＦｅとＡｌの複
合酸化物が硬質相として分散している組織を有すること
を特徴とする耐摩耗性に優れたＡｌ系酸化物分散Ｆｅ基
焼結合金。3. Al: 10 to 45%, O: 3 to 3 by molar ratio.
0%, balance: component composition comprising Fe and unavoidable impurities, and a structure having a structure in which a complex oxide of Fe and Al having a linear cross section is dispersed as a hard phase at a crystal grain boundary of the base material. Al-based oxide-dispersed Fe-based sintered alloy with excellent heat resistance.
０％、残部：Ｆｅおよび不可避不純物からなる成分組成
となるようにＦｅ酸化物粉末、Ｆｅ粉末、およびＡｌある
いはＡｌ合金粉末を配合し混合して得られた混合粉末の
圧粉体に熱エネルギーを負荷することを特徴とする耐摩
耗性に優れたＡｌ系酸化物分散Ｆｅ基焼結合金の製造方
法。4. Al: 10 to 45% by mole ratio, O: 3 to 3
0%, balance: heat energy is applied to a green compact of a mixed powder obtained by blending and mixing Fe oxide powder, Fe powder, and Al or Al alloy powder so as to have a component composition of Fe and unavoidable impurities. A method for producing an Al-based oxide-dispersed Fe-based sintered alloy having excellent wear resistance, characterized by applying a load.
通電プレスにより負荷することを特徴とする請求項４記
載の耐摩耗性に優れたＡｌ系酸化物分散Ｆｅ基焼結合金
の製造方法。5. The method for producing an Al-based oxide-dispersed Fe-based sintered alloy having excellent wear resistance according to claim 4, wherein the thermal energy is applied by a hot press or an electric press.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009293985A (en) * | 2008-06-03 | 2009-12-17 | Nippon Steel Corp | Standard sample for quantification in glow discharge emission analysis, and glow discharge emission analysis method using the same |
| EP3060366A2 (en) * | 2013-10-22 | 2016-08-31 | Materials Center Leoben Forschung GmbH | Ferritic alloys and methods for preparing the same |
| JP2022107058A (en) * | 2017-12-15 | 2022-07-20 | 国立大学法人東北大学 | Mixed powder for additive manufacturing and method for producing oxide dispersion strengthened alloy |
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2000
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009293985A (en) * | 2008-06-03 | 2009-12-17 | Nippon Steel Corp | Standard sample for quantification in glow discharge emission analysis, and glow discharge emission analysis method using the same |
| EP3060366A2 (en) * | 2013-10-22 | 2016-08-31 | Materials Center Leoben Forschung GmbH | Ferritic alloys and methods for preparing the same |
| EP3060366B1 (en) * | 2013-10-22 | 2022-08-24 | Materials Center Leoben Forschung GmbH | Ferritic alloys and methods for preparing the same |
| JP2022107058A (en) * | 2017-12-15 | 2022-07-20 | 国立大学法人東北大学 | Mixed powder for additive manufacturing and method for producing oxide dispersion strengthened alloy |
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