JPS60144908A - Permanent magnet material - Google Patents
Permanent magnet materialInfo
- Publication number
- JPS60144908A JPS60144908A JP59000263A JP26384A JPS60144908A JP S60144908 A JPS60144908 A JP S60144908A JP 59000263 A JP59000263 A JP 59000263A JP 26384 A JP26384 A JP 26384A JP S60144908 A JPS60144908 A JP S60144908A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- alpha
- earth elements
- maximum energy
- energy product
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
- H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、家庭電化製品、音響製品１時計部品、自動
車部品、精密機器等々の永久磁石を用いる広範囲な用途
に使用することができる永久磁石材料に関し、とくに希
土類元素（Ｒ）と鉄（Ｆｅ）とを主体とする永久磁石材
料に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a permanent magnet material that can be used in a wide range of applications using permanent magnets such as home appliances, audio products, watch parts, automobile parts, precision instruments, etc. This relates to a permanent magnet material mainly composed of R) and iron (Fe).
（従来技術）
近年、永久磁石材料における最大エネルギ積（（Ｂ Ｈ
） ｆｆ１ａｘ ）の向上はかってのアルニコ系磁石材
料等のそれに比べて著しいものがあり、とくに家庭電化
製品、音響製品、時計部品、自動車部品、精密機器等々
の小型軽量化および高性能化等に大きく貢献している。(Prior art) In recent years, the maximum energy product ((B H
) The improvement in ff1ax) is remarkable compared to that of the old alnico magnet materials, etc., and it is especially important for the miniaturization and weight reduction and high performance of home appliances, audio products, watch parts, automobile parts, precision instruments, etc. Contributing.
従来、このような優れた特性の永久磁石材料としては希
土類−コバルト系磁石が代表的なものであり、その最大
エネルギ積（（ＢＨ） ｍａｔ ）は１８〜２８ＭＧΦ
Ｏｅ程度のかなり高い値を示している。しかし、最大エ
ネルギ積（（ＢＨ）ｒａａＸ ）をさらに向上させるた
めの研究はいぜんとして続けられ、一部では他の希土類
磁石の開発も進んでおり、なかには希土類−鉄系磁石材
料についての開発も行われている。この希土類−鉄系磁
石材料としてはＮｄ−Ｆｅ系やＮｄ−Ｆｅ−Ｂ系のもの
もあるが、本発明者らはこれを基にさらに研究を進めた
結果、この発明を完成するに至ったものである。Conventionally, rare earth-cobalt magnets have been typical as permanent magnet materials with such excellent characteristics, and their maximum energy product ((BH) mat ) is 18 to 28 MGΦ
It shows a fairly high value of about Oe. However, research to further improve the maximum energy product ((BH) raa ing. There are Nd-Fe-based and Nd-Fe-B-based rare earth-iron magnet materials, but as a result of further research based on these, the inventors were able to complete this invention. It is something.
（発明の目的）
この発明は上述したＮｄ−Ｆｅ系およびＮｄ−Ｆｅ−Ｂ
系を代表とするＲＥＭ−Ｆｅ （−Ｂ）系の永久磁石材
料において、残留磁束密度（Ｂｒ）、保磁力（ＢＨ’Ｃ
，ＩＨＣ）および最大エネルギ積（（ＢＨ） ｍａｗ
）で表わされる磁気特性をさらに向上させた希土類−鉄
系永久磁石材料を提供することを目的としている。(Object of the invention) This invention relates to the above-mentioned Nd-Fe system and Nd-Fe-B system.
In the REM-Fe (-B) series permanent magnet material, the residual magnetic flux density (Br) and the coercive force (BH'C
, IHC) and the maximum energy product ((BH) maw
) The object of the present invention is to provide a rare earth-iron permanent magnet material with further improved magnetic properties expressed by:
（発明の構成）
この発明による永久磁石材料は、一般式、Ｒ１、−β
、Ｆｅ、ＸβＢｙで表わされ、Ｒが希土類元素の１種ま
たは２種以上、ＸがＣ９Ｎ、Ｓｔ、Ｐの１種または２種
以上であり、０．６０≦α≦０．８５．
０、Ｏ１≦β＜０．１５．
０≦γ≦０．１０
であることを特徴としている。(Structure of the Invention) The permanent magnet material according to the present invention has the general formula: R1, -β
, Fe, XβBy, R is one or more rare earth elements, X is one or more of C9N, St, P, and 0.60≦α≦0.85. 0, O1≦β<0.15. It is characterized in that 0≦γ≦0.10.
この発明による永久磁石材料は、上記のように、一般式
、Ｒ１−ａ−７３−ｙＦｅｃｔＸ／３Ｂｙで表わされる
が、式中のＲは希土類元素の１種または２種以上である
ことを示し、Ｎｄをはじめとし、Ｓｃ、Ｙ、Ｌａ、Ｃｅ
、Ｐｒ、Ｐｍ、Ｓｍ。As mentioned above, the permanent magnet material according to the present invention is represented by the general formula R1-a-73-yFectX/3By, where R represents one or more rare earth elements, Including Nd, Sc, Y, La, Ce
, Pr, Pm, Sm.
Ｅｕ、Ｇｄ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ、Ｔｍ。Eu, Gd, Tb, Dy, Ho, Er, Tm.
Ｙｂ、Ｌｕのうちの１種または２種以上が用いられる。One or more types of Yb and Lu are used.
また、上記一般式において、Ｆｅ（鉄）は、０．８０≦
α≦０．８５の範囲としている。ここで、Ｆｅの量が多
すぎると、残留磁束密度（Ｂｒ）は向上するものの、保
磁力（、ＢＨＣ。In addition, in the above general formula, Fe (iron) is 0.80≦
The range is α≦0.85. Here, if the amount of Fe is too large, the residual magnetic flux density (Br) will improve, but the coercive force (, BHC) will increase.
Ｉ Ｈｃ）が極端に減少するため、すぐれた最大エネル
ギ積（（Ｂ Ｈ） ｍａｗ ）は得られなくなるので、
α≦０．８５とした。一方、Ｆｅの量が少なすぎると残
留磁束密度（Ｂ ｒ）が低くなり、最大エネルギ積（（
Ｂ Ｈ） ｍａｔ ）が減少するので、０．６０≦αと
した。Since the excellent maximum energy product ((B H) maw ) can no longer be obtained because I Hc) is extremely reduced,
α≦0.85. On the other hand, if the amount of Fe is too small, the residual magnetic flux density (Br) will be low, and the maximum energy product ((
Since B H) mat ) decreases, 0.60≦α is set.
さらに、上記一般式において、ＸはＣ，Ｎ。Furthermore, in the above general formula, X is C or N.
Ｓｊ、Ｐの１種または２種以上であり、ｏ、ｏ、ｉ≦β
＜０．１５の範囲としている。ここで、Ｘ元素は希土類
−鉄系磁石、たとえばＮｄ−Ｆｅ系磁石のキュリ一点を
常温程度から３００°Ｃ以上に上昇させ、保磁力（ＢＨ
Ｃ，１，ＨＣ）を向上させる効果を有するものであり、
このような効果を得るためには、０．０１≦βとする必
要がある。しかし、Ｘの量が多すぎると炭化物、窒化物
、珪化物、燐化物の占める割合が高くなって保磁力（Ｂ
ＨＣ、ＩＨＣ）および残留磁束密度（Ｂ ｒ）が減少し
、すぐれた最大エネルギ積（（ＢＨ）ｍａＸ）が得られ
なくなるのでβ＜０．１５とした。One or more of Sj and P, o, o, i≦β
The range is <0.15. Here, the element
It has the effect of improving C, 1, HC),
In order to obtain such an effect, it is necessary to satisfy 0.01≦β. However, if the amount of
HC, IHC) and residual magnetic flux density (Br) decrease, making it impossible to obtain an excellent maximum energy product ((BH)maX), so β<0.15 was set.
さらに、Ｂ（硼素）は希土類−鉄系磁石、たとえばＮｄ
−Ｆｅ系磁石の磁気特性を高めるのに有効であるが、多
すぎるとかえって磁気特性が低下するので、γ≦０．１
０とした。Furthermore, B (boron) is a rare earth-iron magnet, such as Nd.
-It is effective in improving the magnetic properties of Fe-based magnets, but if it is too much, the magnetic properties will deteriorate, so γ≦0.1
It was set to 0.
（牢槁４１ｆｌｌ １ ）
Ｎｄ’ＦｅＣＢ なる組成の合
０．２２−β ０，７５ β ０．０３−金をアルゴン
雰囲気中に調整したボタン溶解炉を用いて溶製した。次
いで、溶製合金を乳鉢内で粗粉砕した後、ジェットミル
にて平均粒径４ｇｍ程度まで微粉砕した。(Gold 41fl1) Nd'FeCB 0.22-β 0.75 β 0.03-gold was melted using a button melting furnace adjusted to an argon atmosphere. Next, the molten alloy was roughly pulverized in a mortar, and then finely pulverized in a jet mill to an average particle size of about 4 gm.
次に、得られた粉末を１５ＫＯｅの磁場中で約２ｔｏｎ
ｆ／ｃｍ２の圧力をかけてプレス成形したのち、得られ
た成形体をアルゴン雰囲気中において１０００°Ｃで１
時間の条件で焼結を行い、室温まで急冷した後さらに所
定の熱処理を施した。Next, the obtained powder was heated to approximately 2 tons in a magnetic field of 15 KOe.
After press forming under a pressure of f/cm2, the obtained molded body was heated at 1000°C in an argon atmosphere for 1
Sintering was carried out under the conditions of a certain amount of time, and after being rapidly cooled to room temperature, a predetermined heat treatment was performed.
次いで、得られた磁石材料の残留磁束密度（Ｂｒ）、保
磁力（ＢＨＣ、ＩＨＣ） 、および最大エネルギ積（（
Ｂ Ｈ） ｍａｔ ）を調べたところ、第１表に示すよ
うに、本発明の範囲を満足する場合はいずれもすぐれた
磁気特性を示しているのに対して、Ｃ量が少なすぎるＮ
ｏ、１．２．およびＣ量が多すぎる陥、６の場合にはい
ずれも本発明のものよりも磁気特性が劣っていることが
明らかである。Then, the residual magnetic flux density (Br), coercive force (BHC, IHC), and maximum energy product ((
As shown in Table 1, when the B H
o, 1.2. It is clear that the magnetic properties are inferior to those of the present invention in both case 6 and case 6 in which the amount of C is too large.
（実施例２）
ＮｄＯ，２２−βＦｅＯ，７５Ｓｉ／３ Ｂｏ、０３な
る組成の合金をアルゴン雰囲気中に調整したボタン溶解
炉を用いて溶製した。次いで、溶製合金を乳鉢内で粗粉
砕した後、ジェットミルにて平均粒径４ｇｍ程度まで微
粉砕した。(Example 2) An alloy having the composition of NdO, 22-βFeO, 75Si/3 Bo, 03 was melted using a button melting furnace adjusted to an argon atmosphere. Next, the molten alloy was roughly pulverized in a mortar, and then finely pulverized in a jet mill to an average particle size of about 4 gm.
次に、得られた粉末を１５ＫＯｅの磁場中で約２ｔｏｎ
ｆ／Ｃｍ２の圧力をかけてプレス成形したのち、得られ
た成形体をアルゴン雰囲気中において１０００°Ｃで１
時間の条件で焼結を行い、室温まで急冷した後さらに所
定の熱処理を施した。Next, the obtained powder was heated to approximately 2 tons in a magnetic field of 15 KOe.
After press forming under a pressure of f/Cm2, the obtained molded body was heated at 1000°C in an argon atmosphere for 1
Sintering was carried out under the conditions of a certain amount of time, and after being rapidly cooled to room temperature, a predetermined heat treatment was performed.
次いで、得られた磁石材料の残留磁束密度（Ｂｒ）、保
磁力（ＢＨＣ、ＩＨｃ）、および最大エネルギ積（（Ｂ
Ｈ） ｍａｘ ）を調べたところ、第２表に示す結果
となった。Next, the residual magnetic flux density (Br), coercive force (BHC, IHc), and maximum energy product ((B
H) max ) was investigated, and the results are shown in Table 2.
第２表に示すように、本発明の範囲を満足する場合はい
ずれもすぐれた磁気特性を示しているのに対して、Ｓｉ
量が少なすぎるＮｏ、１１．１２、およびＳｉ量が多す
ぎる慟、１６の場合にはいずれも本発明のものよりも磁
気特性が劣っていることが明らかである。As shown in Table 2, all cases satisfying the scope of the present invention show excellent magnetic properties, whereas Si
It is clear that in the cases of No. 11.12, where the amount of Si is too small, and No. 16, where the amount of Si is too large, the magnetic properties are inferior to those of the present invention.
（実施例３）
Ｎｄｏ、２２−βＦｅｏ、７５ＰβＢｏ、ｏ３なる組成
の合金をアルゴン雰囲気中に調整したボタン溶解炉を用
いて溶製した。次いで、溶製合金を乳鉢内で粗粉砕した
後、ジェットミルにて平均粒径４ｇｍ程度まで微粉砕し
た。(Example 3) An alloy having a composition of Ndo, 22-βFeo, 75PβBo, and o3 was melted using a button melting furnace adjusted to an argon atmosphere. Next, the molten alloy was roughly pulverized in a mortar, and then finely pulverized in a jet mill to an average particle size of about 4 gm.
次に、得られた粉末を１５ＫＯｅの磁場中で約２ｔｏｎ
ｆ／ｃｍ２の圧力をかけてプレス成形したのち、得られ
た成形体をアルゴン雰囲気中において１０００°Ｃで１
時間の条件で焼結を行い、室温まで急冷した後さらに所
定の熱処理を施した。Next, the obtained powder was heated to approximately 2 tons in a magnetic field of 15 KOe.
After press forming under a pressure of f/cm2, the obtained molded body was heated at 1000°C in an argon atmosphere for 1
Sintering was carried out under the conditions of a certain amount of time, and after being rapidly cooled to room temperature, a predetermined heat treatment was performed.
次いで、得られた磁石材料の残留磁束密度（Ｂｒ）、保
磁力（ＢＨＣ、ＩＨＣ）、および最大エネルギ積（（Ｂ
Ｈ） ｍａｎ ）を調べたところ、第３表に示す結果
となった。Next, the residual magnetic flux density (Br), coercive force (BHC, IHC), and maximum energy product ((B
H)man) was investigated, and the results are shown in Table 3.
第３表に示すように、本発明の範囲を満足する場合はい
ずれもすぐれた磁気特性を示しているのに対して、Ｐ量
が少なすぎるＮｏ、２１．２２、およびＰ量が多すぎる
陽、２６の場合にはいずれも本発明のものよりも磁気特
性が劣っていることが明らかである。As shown in Table 3, all cases satisfying the scope of the present invention show excellent magnetic properties, while No. 21.22, which has too little P amount, and No. 21.22, which has too much P amount, have excellent magnetic properties. , 26, it is clear that the magnetic properties are inferior to those of the present invention.
（実施例４）
Ｎｄｏ、２２Ｆｅｏ、７５ＮβＢｏ、。３なる組成の合
金をアルゴン雰囲気中に調整したボタン溶解炉を用いて
溶製した。次いで、溶製合金を乳鉢内で粗粉砕した後、
ジェットミルにて平均粒径４７１ｍ程度まで微粉砕した
。(Example 4) Ndo, 22Feo, 75NβBo. An alloy having the composition No. 3 was melted using a button melting furnace adjusted to an argon atmosphere. Next, after coarsely pulverizing the molten alloy in a mortar,
It was pulverized using a jet mill to an average particle size of about 471 m.
次に、得られた粉末を１５ＫＯｅの磁場中で約２ｔｏｎ
ｆ／ｃｍ２の圧力をかけてプレス成形したのち、得られ
た成形体をアルゴン雰囲気中において１０００°Ｃで１
時間の条件で焼結を行い、室温まで急冷した後さらに所
定の熱処理を施した。Next, the obtained powder was heated to approximately 2 tons in a magnetic field of 15 KOe.
After press forming under a pressure of f/cm2, the obtained molded body was heated at 1000°C in an argon atmosphere for 1
Sintering was carried out under the conditions of a certain amount of time, and after being rapidly cooled to room temperature, a predetermined heat treatment was performed.
次いで、得られた磁石材料の残留磁束密度（Ｂｒ）、保
磁力（ＢＨＣ、ＩＨＣ）、および最大エネルギ積（（Ｂ
Ｈ） ｍａｘ ）を調べたところ、第４表に示す結果
となった。Next, the residual magnetic flux density (Br), coercive force (BHC, IHC), and maximum energy product ((B
H) max ) was investigated, and the results are shown in Table 4.
第４表に示すように、本発明の範囲を満足する場合はい
ずれもすぐれた磁気特性を示しているのに対して、Ｎ量
が少なすぎるＮｏ、３１．３２、およびＮ量が多すぎる
陽、３６の場合にはいずれも本発明のものよりも磁気特
性が劣っていることが明らかである。As shown in Table 4, all cases satisfying the range of the present invention show excellent magnetic properties, while No. 31.32, which has too little N amount, and No. 31.32, which has too much N amount, exhibit excellent magnetic properties. , 36, it is clear that the magnetic properties are inferior to those of the present invention.
（実施例５）
第５表に示す組成の合金をアルゴン雰囲気中に調整した
ボタン溶解炉を用いて溶製した。次いで、溶製合金を乳
鉢内で粗粉砕した後、ジェットミルにて平均粒径４７ｈ
ｍ程度まで微粉砕した。(Example 5) Alloys having the compositions shown in Table 5 were melted using a button melting furnace adjusted to an argon atmosphere. Next, after coarsely pulverizing the molten alloy in a mortar, a jet mill was used to reduce the average particle size to 47 h.
It was pulverized to about m.
次に、得られた粉末を１５ＫＯｅの磁場中で約２ ｔｏ
ｎｆ／ ｃｍ２の圧力をかけてプレス成形したのち、得
られた成形体をアルゴン雰囲気中において１ｏｏｏ°Ｃ
で１時間の条件で焼結を行い、室温まで急冷した後さら
に所定の熱処理を施した。Next, the obtained powder was heated in a magnetic field of 15 KOe for about 2 to
After press molding under a pressure of nf/cm2, the obtained molded body was heated to 100°C in an argon atmosphere.
Sintering was carried out under the conditions of 1 hour, and after rapidly cooling to room temperature, a predetermined heat treatment was performed.
次いで、得られた磁石材料の残留磁束密度（Ｂｒ）、保
磁力（ＢＨＣ、ＩＨＣ）、および最大エネルギ積（（Ｂ
Ｈ） ｍａｘ ）を調べたところ、第５表に示す結果
となった。Next, the residual magnetic flux density (Br), coercive force (BHC, IHC), and maximum energy product ((B
H) max ) was investigated, and the results are shown in Table 5.
第５表に示すように、Ｒ−Ｆｅ系の磁石材料にＸ成分を
適量添加した（Ｎｏ、４１〜４３．４５）の場合にもＲ
−Ｆｅ−Ｂ系の磁石材料にＸ成分を適量添加した場合（
前記実施例）と同様にすぐれた磁気特性を示しており、
Ｒ−Ｆｅ−Ｂ系の磁石材料に上記Ｘ成分を含まない陽、
４４の場合よりも磁気特性にすぐれていることが明らか
である。As shown in Table 5, the R
-When an appropriate amount of X component is added to Fe-B magnet material (
It shows excellent magnetic properties similar to the above example),
A positive R-Fe-B magnet material that does not contain the above X component,
It is clear that the magnetic properties are superior to those of No. 44.
（発明の効果）
以上説明してきたように、この発明による永久磁石材料
は、一般式
％式％
が希土類元素の１種または２種以上、ＸがＣ２Ｎ、Ｓｉ
、Ｐの１種または２種以上であり、０．６０≦α≦０．
８５．
０．０１≦β＜０．１５．
０≦γ≦０．１０
であるようにしたから、残留磁束密度（Ｂｒ）保磁力（
ＢＨＣ，ＩＨＣ）、最大エネルギ積（（Ｂ Ｈ） ｍａ
ｘ ）で表わされる磁気特性に著しく優れたものであり
、家庭電化製品、音響製品、時計部品、自動車部品、精
密機器等々の小型軽量化および高性能化等を永久磁石の
面から実現することが可能であるという非常に優れた効
果をもたらしうるものである。(Effects of the Invention) As explained above, the permanent magnet material according to the present invention has the general formula % where the general formula % is one or more rare earth elements, and X is C2N, Si
, P, and 0.60≦α≦0.
85. 0.01≦β<0.15. Since 0≦γ≦0.10, the residual magnetic flux density (Br) and coercive force (
BHC, IHC), maximum energy product ((B H) ma
It has extremely excellent magnetic properties expressed by It is possible to bring about very good effects.
特許出願人 大同特殊鋼株式会社 代理人弁理士 小 塩 豊Patent applicant: Daido Steel Co., Ltd. Representative Patent Attorney Yutaka Shio
Claims (1)
が希土類元素の１種または２種以上、ＸがＣ１Ｎ、Ｓｔ
、Ｐの１種または２種以上であり、０．６０≦α≦０
．８５． ０．０１≦β＜０．１５、 であることを特徴とする永久磁石材料。 （２）式、Ｒ１、，３、Ｆｅ、ＸβＢ、で表わされ、Ｒ
が希土類元素の１種または２種以上、ＸがＣ，Ｎ、Ｓｔ
、Ｐの１種または２種以上であり、 ０．６０≦α≦０．８５． ０．０１≦β＜０．１５、 γ≦０．１０ であることを特徴とする永久磁石材料。[Claims] Formula (1), represented by R1-ex-f3FeaXβ, R
is one or more rare earth elements, X is C1N, St
, one or more types of P, and 0.60≦α≦0
．． 85. A permanent magnetic material characterized in that 0.01≦β<0.15. (2) Represented by the formula, R1, , 3, Fe, XβB, and R
is one or more rare earth elements, X is C, N, St
, P, and 0.60≦α≦0.85. A permanent magnetic material characterized in that 0.01≦β<0.15 and γ≦0.10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59000263A JPS60144908A (en) | 1984-01-06 | 1984-01-06 | Permanent magnet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59000263A JPS60144908A (en) | 1984-01-06 | 1984-01-06 | Permanent magnet material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60144908A true JPS60144908A (en) | 1985-07-31 |
Family
ID=11469021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59000263A Pending JPS60144908A (en) | 1984-01-06 | 1984-01-06 | Permanent magnet material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60144908A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162750A (en) * | 1984-02-01 | 1985-08-24 | Nippon Gakki Seizo Kk | Rare earth magnet and its production |
| JPS60204862A (en) * | 1984-03-28 | 1985-10-16 | Toshiba Corp | Rare earth element-iron type permanent magnet alloy |
| US4849035A (en) * | 1987-08-11 | 1989-07-18 | Crucible Materials Corporation | Rare earth, iron carbon permanent magnet alloys and method for producing the same |
| US5085716A (en) * | 1990-02-20 | 1992-02-04 | General Motors Corporation | Hot worked rare earth-iron-carbon magnets |
| EP0470476A2 (en) * | 1990-08-09 | 1992-02-12 | Siemens Aktiengesellschaft | Method for the preparation of anisotropic magnetic material based on the Sm-Fe-N substance system |
| US5186766A (en) * | 1988-09-14 | 1993-02-16 | Asahi Kasei Kogyo Kabushiki Kaisha | Magnetic materials containing rare earth element iron nitrogen and hydrogen |
| EP0571002A2 (en) † | 1989-08-25 | 1993-11-24 | Dowa Mining Co., Ltd. | Permanent magnet alloy having improved resistance to oxidation and process for production thereof |
-
1984
- 1984-01-06 JP JP59000263A patent/JPS60144908A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162750A (en) * | 1984-02-01 | 1985-08-24 | Nippon Gakki Seizo Kk | Rare earth magnet and its production |
| JPH044387B2 (en) * | 1984-02-01 | 1992-01-28 | ||
| JPS60204862A (en) * | 1984-03-28 | 1985-10-16 | Toshiba Corp | Rare earth element-iron type permanent magnet alloy |
| JPH0551656B2 (en) * | 1984-03-28 | 1993-08-03 | Tokyo Shibaura Electric Co | |
| US4849035A (en) * | 1987-08-11 | 1989-07-18 | Crucible Materials Corporation | Rare earth, iron carbon permanent magnet alloys and method for producing the same |
| US5186766A (en) * | 1988-09-14 | 1993-02-16 | Asahi Kasei Kogyo Kabushiki Kaisha | Magnetic materials containing rare earth element iron nitrogen and hydrogen |
| EP0571002A2 (en) † | 1989-08-25 | 1993-11-24 | Dowa Mining Co., Ltd. | Permanent magnet alloy having improved resistance to oxidation and process for production thereof |
| EP0571002B2 (en) † | 1989-08-25 | 2003-01-02 | Dowa Mining Co., Ltd. | Permanent magnet alloy having improved resistance to oxidation and process for production thereof |
| US5085716A (en) * | 1990-02-20 | 1992-02-04 | General Motors Corporation | Hot worked rare earth-iron-carbon magnets |
| EP0470476A2 (en) * | 1990-08-09 | 1992-02-12 | Siemens Aktiengesellschaft | Method for the preparation of anisotropic magnetic material based on the Sm-Fe-N substance system |
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