JP2000104141A - Soft magnetic alloy excellent in corrosion resistance - Google Patents
Soft magnetic alloy excellent in corrosion resistanceInfo
- Publication number
- JP2000104141A JP2000104141A JP10311570A JP31157098A JP2000104141A JP 2000104141 A JP2000104141 A JP 2000104141A JP 10311570 A JP10311570 A JP 10311570A JP 31157098 A JP31157098 A JP 31157098A JP 2000104141 A JP2000104141 A JP 2000104141A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- corrosion resistance
- soft magnetic
- coercive force
- less
- 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.)
- Withdrawn
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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，酸化性，還元性および
その他の腐食性雰囲気中においても化学的変化を生じ難
い耐食性に優れた軟磁性合金に関する。特に，生体毒性
に対して高い安全性を有するＰｔとＦｅ元素を主成分と
し，副成分は耐食性に優れ，あるいは耐食性を改善する
性質を有し，且つ軟磁気特性の向上に有効な元素から構
成されるため，医療，歯科ならびに生体適合性機能材料
の各分野において安全に使用できる。特に，近年の歯科
補綴物の分野における磁石構造体の応用化に際し，吸引
磁石を密封保持ならびに維持固定する高耐食性軟磁性合
金の開発は重要視されている。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soft magnetic alloy which is resistant to chemical changes even in oxidizing, reducing and other corrosive atmospheres and has excellent corrosion resistance. In particular, the main component is Pt and Fe, which have high safety against biotoxicity, and the minor component is composed of an element that has excellent corrosion resistance or has the property of improving corrosion resistance and is effective in improving soft magnetic properties. Therefore, it can be used safely in medical, dental and biocompatible functional materials. In particular, in the application of the magnet structure in the field of dental prostheses in recent years, development of a highly corrosion-resistant soft magnetic alloy for hermetically holding and maintaining and fixing a suction magnet is regarded as important.
【０００２】[0002]
【従来の技術】これまで，生体適合性を有する材料に
は，オーステナイト系およびフェライト系ステンレス鋼
やＴｉおよびＴｉ系合金が知られている。このうち，磁
性を有する材料はステンレス鋼のみであり，高濃度のＣ
ｒを含むＳＵＳＸＭ２７，ＳＵＳ４４７Ｊ１，ＳＵＳ３
１６Ｌ等が実用に耐えるとされてきた。しかし，これら
のステンレス系合金は，食塩水中における自然電極電位
が卑であり，またＦｅおよびＣｒの溶出量も多いため，
口腔内のような化学的に過酷な環境下におかれた場合の
耐食性が問題となる。また，Ｃｒ量が多い組成の合金は
軟磁気特性が低下し，溶接性あるいは鋳接性が劣る欠点
を有する。2. Description of the Related Art Austenitic and ferritic stainless steels and Ti and Ti-based alloys have been known as biocompatible materials. Among them, stainless steel is the only magnetic material,
r containing SUSXM27, SUS447J1, SUS3
It has been considered that 16L or the like can withstand practical use. However, these stainless steel alloys have a low natural electrode potential in saline and a large amount of Fe and Cr eluted.
Corrosion resistance when placed in a chemically harsh environment such as the oral cavity becomes a problem. Alloys having a composition with a large amount of Cr have the drawback that the soft magnetic properties are reduced and the weldability or castability is poor.
【０００３】[0003]
【発明が解決しようとする課題】そこで，本発明者等
は，単体では生体毒性に関して極めて高い安全性を示
し，且つ高い耐食性を有するＦｅとＰｔの合金に着目
し，原子比にてＰｔ１７〜３７％を主成分とし，副成分
としてＣｒ，Ｃｏ，Ｎｉのそれぞれ２５％以下，Ｂ，
Ｃ，Ａｌ，Ｓｉ，Ｔｉ，Ｍｎ，Ｃｕ，Ｇｅ，Ｙ，Ｐｄ，
Ｔａ，Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，Ａｇ，Ａｕのそれぞれ１
０％以下のうち１種または２種以上合計０．００１〜３
５％および残部Ｆｅと少量の不純物からなる合金の耐食
性および軟磁気特性について検討した。Therefore, the present inventors have focused on an alloy of Fe and Pt which has extremely high safety with respect to biotoxicity and has high corrosion resistance by itself, and has a Pt of 17 to 37 in atomic ratio. % As a main component, and 25% or less of each of Cr, Co, and Ni as subcomponents, and B,
C, Al, Si, Ti, Mn, Cu, Ge, Y, Pd,
1 each of Ta, Nb, Mo, W, Ir, Ag, Au
0% or less, 1 or 2 or more types in total 0.001 to 3
The corrosion resistance and soft magnetic properties of an alloy comprising 5% and the balance Fe and a small amount of impurities were examined.
【０００４】特に，合金化した場合，アレルギー等の原
因となるような生体毒性に対して，高い安全性を有する
材料として，原子比にて，Ｐｔ２６〜３６％を主成分と
し，副成分としてＣｒ２５％以下，Ｂ，Ｃ，Ｓｉ，Ｔ
ｉ，Ｍｎ，Ｇｅ，Ｙ，Ｔａ，Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，Ａ
ｇのそれぞれ１０％以下のうち１種または２種以上合計
０．００１〜３５％および残部Ｆｅと少量の不純物から
なる合金は，歯科補綴ならびに医療分野における応用が
期待される。In particular, when alloyed, Pt is 26-36% in atomic ratio as a main component and Cr25 as an auxiliary component as a material having high safety against biotoxicity that may cause allergy and the like. % Or less, B, C, Si, T
i, Mn, Ge, Y, Ta, Nb, Mo, W, Ir, A
An alloy comprising 0.001 to 35% of one or more of 10% or less of each g and a balance of Fe and a small amount of impurities is expected to be applied to dental prostheses and medical fields.
【０００５】ところが，原子比にて，２６〜３６％のＰ
ｔを含む基礎的組成のＦｅ−Ｐｔ系２元合金は，生理食
塩水中において貴の自然電極電位を示し，且つアノード
分極特性も良好であるが，Ｆｅが多く溶出する。Ｆｅ元
素の溶出は毒性を示すものではないが，多量になると錆
を誘発し，材料強度の劣化に至る。However, in terms of atomic ratio, 26-36% of P
An Fe-Pt binary alloy having a basic composition containing t exhibits a noble natural electrode potential in physiological saline and has good anodic polarization characteristics, but a large amount of Fe is eluted. The elution of the Fe element does not indicate toxicity, but when the amount is large, rust is induced and the strength of the material is deteriorated.
【０００６】[0006]
【課題を解決するための手段】本発明者等は，上記の課
題を解決するため，原子比でＦｅ−１７〜３７％Ｐｔ系
２元合金またはこれを主成分とし，副成分としてＣｒ，
ＣｏまたはＮｉのそれぞれを２５％以下，Ｂ，Ｃ，Ａ
ｌ，Ｓｉ，Ｔｉ，Ｍｎ，Ｃｕ，Ｇｅ，Ｙ，Ｐｄ，Ｔａ，
Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，Ａｇ，Ａｕのそれぞれを１０％
以下のうち１種または２種以上合計０．００１〜３５％
と少量の不純物を含み，保磁力が１０Ｏｅ以下，飽和磁
束密度が１０ｋＧ以上を有する耐食性に優れた軟磁性合
金を開発した。Means for Solving the Problems To solve the above-mentioned problems, the inventors of the present invention have proposed a binary alloy of Fe-17 to 37% Pt based on an atomic ratio or a binary alloy containing Cr and Cr as minor components.
25% or less of each of Co or Ni, B, C, A
1, Si, Ti, Mn, Cu, Ge, Y, Pd, Ta,
10% of each of Nb, Mo, W, Ir, Ag and Au
One or more of the following: Total 0.001 to 35%
And a small amount of impurities, a coercive force of 10 Oe or less, and a saturation magnetic flux density of 10 kG or more.
【０００７】これらの合金は，従来のステンレス鋼が示
す低飽和磁束密度および口腔内環境における低耐食性と
いう欠点を改善し，磁石エネルギーを有効に活用し得る
高い軟磁気特性と生体内のように苛酷な条件下でも腐食
されない特徴を持っている。さらに，高耐食性と優れた
磁石特性を兼備するＦｅ−Ｐｔ系磁石合金と組合わせた
構造にすることにより，従来の，ステンレス鋼と組合わ
せた構造にするよりも優れた耐食性が発揮されるため，
歯科補綴物のキーパー材料ならびに生体内埋込み用機能
性部品として最適であり，また腐食性雰囲気中における
電磁部品として使用できる。[0007] These alloys improve the drawbacks of the conventional stainless steel such as low saturation magnetic flux density and low corrosion resistance in the oral environment, and have high soft magnetic properties capable of effectively utilizing magnet energy and severe in vivo. It does not corrode even under mild conditions. Furthermore, the structure combined with the Fe-Pt-based magnet alloy, which has both high corrosion resistance and excellent magnet properties, provides better corrosion resistance than the conventional structure combined with stainless steel. ,
It is ideal as a keeper material for dental prostheses and as a functional part for implanting in a living body, and can be used as an electromagnetic part in a corrosive atmosphere.
【０００８】本発明の特徴とするところは以下の通りで
ある。The features of the present invention are as follows.
【０００９】第１発明は，原子比にて，Ｐｔ１７〜３７
％および残部Ｆｅと少量の不純物からなり，保磁力Ｈｃ
が１０Ｏｅ以下，飽和磁束密度ＢＳが１０ｋＧ以上を有
する耐食性に優れた軟磁性合金であることを特徴とす
る。According to the first invention, Pt 17 to 37 in atomic ratio is used.
% And the balance of Fe and a small amount of impurities, the coercive force Hc
There 10Oe hereinafter, wherein the saturation magnetic flux density B S is soft magnetic alloy having excellent corrosion resistance with more than 10 kG.
【００１０】第２発明は，原子比にて，Ｐｔ１７〜３７
％を主成分とし，副成分としてＣｒ，Ｃｏ，Ｎｉのそれ
ぞれ２５％以下，Ｂ，Ｃ，Ａｌ，Ｓｉ，Ｔｉ，Ｍｎ，Ｃ
ｕ，Ｇｅ，Ｙ，Ｐｄ，Ｔａ，Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，Ａ
ｇ，Ａｕのそれぞれ１０％以下のうち１種または２種以
上合計０．００１〜３５％および残部Ｆｅと少量の不純
物からなり，保磁力が１０Ｏｅ以下，飽和磁束密度が１
０ｋＧ以上を有する耐食性に優れた軟磁性合金であるこ
とを特徴とする。[0010] The second invention is characterized in that Pt 17 to 37 in atomic ratio.
% As a main component and 25% or less of each of Cr, Co, and Ni as subcomponents, B, C, Al, Si, Ti, Mn, C
u, Ge, Y, Pd, Ta, Nb, Mo, W, Ir, A
g and Au are each 10% or less of one or two or more of 0.001 to 35% in total, and the balance is Fe and a small amount of impurities.
It is a soft magnetic alloy excellent in corrosion resistance having 0 kG or more.
【００１１】第３発明は，原子比にて，Ｐｔ２６〜３６
％を主成分とし，副成分としてＣｒを２５％以下，Ｂ，
Ｃ，Ｓｉ，Ｔｉ，Ｍｎ，Ｇｅ，Ｙ，Ｔａ，Ｎｂ，Ｍｏ，
Ｗ，Ｉｒ，Ａｇのそれぞれ１０％以下のうち１種または
２種以上合計０．００１〜３５％および残部Ｆｅと少量
の不純物からなり，保磁力が１０Ｏｅ以下，飽和磁束密
度が１０ｋＧ以上を有する生体適合性ならびに耐食性に
優れた軟磁性合金であることを特徴とする。[0011] The third invention is based on an atomic ratio of Pt 26 to 36.
% As a main component, and Cr as a sub-component at 25% or less.
C, Si, Ti, Mn, Ge, Y, Ta, Nb, Mo,
One or two or more of W, Ir, and Ag of 10% or less, each containing 0.001 to 35% in total, the balance being Fe and a small amount of impurities, and having a coercive force of 10 Oe or less and a saturation magnetic flux density of 10 kG or more. It is a soft magnetic alloy with excellent compatibility and corrosion resistance.
【００１２】第４発明は，第１発明ないし第３発明のい
ずれか１発明の合金を，高周波炉またはアーク炉で溶解
し，得られたインゴットを熱間または冷間で加工率３０
％以上加工し，これを真空中または非酸化性雰囲気中５
００℃以上融点以下の温度で１分間以上１００時間以下
加熱した後０．１℃／秒以上１５００℃／秒以下の速度
で冷却することにより，保磁力が１０Ｏｅ以下，飽和磁
束密度が１０ｋＧ以上を有する耐食性に優れた軟磁性合
金の製造方法に関する。In a fourth aspect, the alloy according to any one of the first to third aspects is melted in a high-frequency furnace or an arc furnace, and the obtained ingot is hot or cold worked at a working rate of 30%.
% In a vacuum or in a non-oxidizing atmosphere.
After heating for 1 minute to 100 hours at a temperature between 00 ° C. and the melting point and then cooling at a rate of 0.1 ° C./s to 1500 ° C./s, the coercive force is 10 Oe or less and the saturation magnetic flux density is 10 kG or more. The present invention relates to a method for producing a soft magnetic alloy having excellent corrosion resistance.
【００１３】第５発明は，第１発明ないし第３発明のい
ずれか１発明の合金を，高周波炉またはアーク炉で溶解
し，得られたインゴットを熱間または冷間で加工率３０
％以上加工し，これを真空中または非酸化性雰囲気中５
００℃以上融点以下の温度で１分間以上１００時間以下
加熱した後０．１℃／秒以上１５００℃／秒以下の速度
で冷却し，これをさらに真空中または非酸化性雰囲気中
４００℃以上融点以下の温度で１分間以上１０００時間
以下加熱した後冷却することにより，保磁力が１０Ｏｅ
以下，飽和磁束密度が１０ｋＧ以上を有する耐食性に優
れた軟磁性合金の製造方法に関する。In a fifth aspect, the alloy of any one of the first to third aspects is melted in a high-frequency furnace or an arc furnace, and the obtained ingot is hot or cold worked at a working rate of 30%.
% In a vacuum or in a non-oxidizing atmosphere.
After heating for 1 minute to 100 hours at a temperature between 00 ° C. and the melting point and then cooling at a rate of 0.1 ° C./s to 1500 ° C./s, it is further heated in a vacuum or a non-oxidizing atmosphere to a temperature of 400 ° C. or more. The coercive force is 10 Oe by heating at the following temperature for 1 minute to 1000 hours and then cooling.
The present invention relates to a method for producing a soft magnetic alloy having a saturation magnetic flux density of 10 kG or more and having excellent corrosion resistance.
【００１４】第６発明は，第３発明の合金を，精密鋳造
法により鋳造し，これを真空中または非酸化性雰囲気中
４００℃以上融点以下の温度で１分間以上１０００時間
以下加熱した後冷却することにより，保磁力が１０Ｏｅ
以下，飽和磁束密度が１０ｋＧ以上を有する生体適合性
ならびに耐食性に優れた軟磁性合金の製造方法に関す
る。According to a sixth aspect, the alloy of the third aspect is cast by a precision casting method, and the alloy is heated in a vacuum or a non-oxidizing atmosphere at a temperature of 400 ° C. or more and a melting point of 1 minute or more and 1000 hours or less, and then cooled. The coercive force is 10 Oe
The present invention relates to a method for manufacturing a soft magnetic alloy having a saturation magnetic flux density of 10 kG or more and having excellent biocompatibility and corrosion resistance.
【００１５】第７発明は，第１発明ないし第３発明のい
ずれか１発明の合金を，第４発明ないし第６発明のいず
れか１発明の方法によって製造した，保磁力が１０Ｏｅ
以下，飽和磁束密度が１０ｋＧ以上を有する耐食性に優
れた軟磁性合金からなる電磁部品であることを特徴とす
る。In a seventh aspect, the alloy of any one of the first to third aspects is manufactured by the method of any one of the fourth to sixth aspects, wherein the coercive force is 10 Oe.
Hereinafter, the electromagnetic component is characterized by being an electromagnetic component made of a soft magnetic alloy excellent in corrosion resistance and having a saturation magnetic flux density of 10 kG or more.
【００１６】第８発明は，第１発明ないし第３発明のい
ずれか１発明の合金を，第４発明ないし第６発明のいず
れか１発明の方法によって製造した，保磁力が１０Ｏｅ
以下，飽和磁束密度が１０ｋＧ以上を有する耐食性に優
れた軟磁性合金と，永久磁石合金から構成される電磁機
器であることを特徴とする。In an eighth aspect, the alloy according to any one of the first to third aspects is manufactured by the method according to any one of the fourth to sixth aspects, and the coercive force is 10 Oe.
Hereinafter, the present invention is characterized in that it is an electromagnetic device composed of a soft magnetic alloy having a saturation magnetic flux density of 10 kG or more and excellent in corrosion resistance and a permanent magnet alloy.
【００１７】第９発明は，第３発明の合金を，第４発明
ないし第６発明のいずれかの方法によって製造した，保
磁力が１０Ｏｅ以下，飽和磁束密度が１０ｋＧ以上を有
する耐食性に優れた軟磁性合金からなる医療・健康用具
であることを特徴とする。A ninth invention is a soft alloy excellent in corrosion resistance having a coercive force of 10 Oe or less and a saturation magnetic flux density of 10 kG or more produced by the method of any of the fourth to sixth inventions. It is a medical / health tool made of a magnetic alloy.
【００１８】第１０発明は，第３発明の合金を，第４発
明ないし第６発明のいずれかの方法によって製造した，
保磁力が１０Ｏｅ以下，飽和磁束密度が１０ｋＧ以上を
有する，耐食性に優れた軟磁性合金からなる歯科補綴物
のキーパーであることを特徴とする。According to a tenth aspect, the alloy according to the third aspect is manufactured by the method according to any one of the fourth to sixth aspects.
It is a keeper of a dental prosthesis made of a soft magnetic alloy excellent in corrosion resistance and having a coercive force of 10 Oe or less and a saturation magnetic flux density of 10 kG or more.
【００１９】第１１発明は，第３発明の合金を，第４発
明ないし第５発明のいずれかの方法によって製造した，
保磁力が１０Ｏｅ以下，飽和磁束密度が１０ｋＧ以上を
有する，耐食性に優れた軟磁性合金からなる生体内埋込
み用機能性部品であることを特徴とする。According to an eleventh aspect, the alloy according to the third aspect is manufactured by the method according to any one of the fourth to fifth aspects.
It is a functional part to be implanted in a living body, which has a coercive force of 10 Oe or less and a saturation magnetic flux density of 10 kG or more and is made of a soft magnetic alloy having excellent corrosion resistance.
【００２０】[0020]
【作用】以下に本発明の構成を説明する。耐食性軟磁性
合金の成分は，原子比にてＰｔ１７〜３７％を主成分と
し，副成分としてＣｒ，Ｃｏ，Ｎｉのそれぞれ２５％以
下，Ｂ，Ｃ，Ａｌ，Ｓｉ，Ｔｉ，Ｍｎ，Ｃｕ，Ｇｅ，
Ｙ，Ｐｄ，Ｔａ，Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，Ａｇ，Ａｕの
それぞれ１０％以下のうち１種または２種以上合計０．
００１〜３５％および残部Ｆｅと少量の不純物からな
る。The structure of the present invention will be described below. The composition of the corrosion-resistant soft magnetic alloy is 17 to 37% of Pt in atomic ratio as a main component, and 25% or less of each of Cr, Co, and Ni as minor components, and B, C, Al, Si, Ti, Mn, Cu, Ge. ,
Each of Y, Pd, Ta, Nb, Mo, W, Ir, Ag, and Au is one or more of 10% or less.
001-35%, the balance being Fe and a small amount of impurities.
【００２１】特に，生体毒性に対して高い安全性を有す
る材料としては，原子比にて，Ｐｔ２６〜３６％を主成
分とし，副成分としてＣｒ２５％以下，Ｂ，Ｃ，Ｓｉ，
Ｔｉ，Ｍｎ，Ｇｅ，Ｙ，Ｔａ，Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，
Ａｇのそれぞれ１０％以下のうち１種または２種以上合
計０．００１〜３５％および残部Ｆｅと少量の不純物か
らなる。Particularly, as a material having high safety against biotoxicity, Pt is 26 to 36% in atomic ratio as a main component, and 25% or less of Cr, B, C, Si,
Ti, Mn, Ge, Y, Ta, Nb, Mo, W, Ir,
One or two or more of each of 10% or less of Ag are 0.001 to 35% in total, and the balance is Fe and a small amount of impurities.
【００２２】これらの合金を高周波炉で溶解後，金型に
鋳造して冷間および熱間で加工率３０％以上加工する
か，あるいは複雑形状を有する歯科補綴物や生体内埋込
み用インプラント等は精密鋳造法によって，要求される
形態を直接作製する。本系合金は，鋳造状態でも熱処理
によって軟磁気特性を示すが，冷間加工あるいは熱間加
工と熱処理との組合わせにより，集合組織あるいは再結
晶組織を得ることで耐食性および軟磁気特性がさらに向
上する。After melting these alloys in a high-frequency furnace, they are cast into a mold and worked at a working ratio of 30% or more in cold and hot conditions. Alternatively, dental prostheses and implants for implanting in a living body having a complicated shape are used. The required form is directly produced by precision casting. This alloy shows soft magnetic properties by heat treatment even in the cast state, but the corrosion resistance and soft magnetic properties are further improved by obtaining a texture or recrystallized structure by a combination of cold working or hot working and heat treatment. I do.
【００２３】軟磁性合金の組成範囲を上述のように限定
した理由は，原子比にてＰｔ１７％未満では室温におい
て所期の磁気特性が得られなくなる。また，Ｐｔ３７％
以上では均質化熱処理後急冷しても磁気特性が不安定
で，大きな保磁力を発生し易く，軟磁気特性が失われて
しまうからである。The reason why the composition range of the soft magnetic alloy is limited as described above is that if the atomic ratio is less than 17% of Pt, desired magnetic properties cannot be obtained at room temperature. In addition, Pt37%
In the above, the magnetic properties are unstable even if quenched after the homogenizing heat treatment, a large coercive force is easily generated, and the soft magnetic properties are lost.
【００２４】生体適合性を重視した場合，Ｐｔ２６％未
満では生理食塩水中におけるＦｅの溶出量が増加し，Ｐ
ｔ３７％未満であれば上記熱処理後大気中放冷によって
も確実に均質化相を得ることができる。且つ，冷間圧延
やしぼり等の強加工が可能である。When biocompatibility is considered important, if Pt is less than 26%, the elution amount of Fe in physiological saline increases,
If it is less than 37%, a homogenized phase can be surely obtained even after cooling in the air after the heat treatment. In addition, strong working such as cold rolling and squeezing is possible.
【００２５】次に，副成分としてＣｒ，Ｃｏ，Ｎｉのそ
れぞれ２５％以下とした理由は，Ｃｒ量を増すと鋳造性
ならびに加工性が劣化して加工が難しくなり，残留磁束
密度も減少して所期の軟磁気特性が得られなくなるの
で，２５％以下とした。また，ＣｏおよびＮｉは飽和磁
束密度を上昇させるが，生体に対してはアレルギーを起
こし易い元素であることから，生体適合性軟磁性合金か
ら除いた。Next, the reason why each of Cr, Co, and Ni is set to 25% or less as a sub-component is that when the Cr content is increased, castability and workability deteriorate, making working difficult and reducing the residual magnetic flux density. Since the desired soft magnetic characteristics cannot be obtained, the content is set to 25% or less. Although Co and Ni increase the saturation magnetic flux density, they are excluded from biocompatible soft magnetic alloys because they are allergic to living organisms.
【００２６】さらに，Ｂ，Ｃ，Ａｌ，Ｓｉ，Ｔｉ，Ｍ
ｎ，Ｃｕ，Ｇｅ，Ｙ，Ｐｄ，Ｔａ，Ｎｂ，Ｍｏ，Ｗ，Ｉ
ｒ，Ａｇ，Ａｕそれぞれの添加量を１０％以上とする
と，合金の鋳造性低下，脆性増加を招き，磁気特性が劣
化する等の悪影響を及ぼすため製造が困難になったり軟
磁気特性が失われるからである。また，生体適合性軟磁
性合金を製造するためには，アルツハイマー病に関与す
るとされるＡｌ，およびアレルギーを起こす率が高いと
されるＣｕ，Ｐｄ，Ａｕ元素を除いた。Further, B, C, Al, Si, Ti, M
n, Cu, Ge, Y, Pd, Ta, Nb, Mo, W, I
When the addition amount of each of r, Ag, and Au is 10% or more, the castability of the alloy is reduced, the brittleness is increased, and the magnetic properties are adversely affected, so that the production becomes difficult or the soft magnetic properties are lost. Because. In addition, in order to produce a biocompatible soft magnetic alloy, Al, which is considered to be involved in Alzheimer's disease, and Cu, Pd, and Au, which are highly likely to cause allergy, were excluded.
【００２７】副成分のＣｒ，Ｃｏ，ＮｉとＢ，Ｃ，Ａ
ｌ，Ｓｉ，Ｔｉ，Ｍｎ，Ｃｕ，Ｇｅ，Ｙ，Ｐｄ，Ｔａ，
Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，Ａｇ，Ａｕのうち１種または２
種以上合計０．００１％以下では添加効果が得られない
からであり，添加量が両者をあわせて３５％以上になる
と，合金の鋳造性の低下，脆性の増加，磁気特性の劣化
および本来Ｆｅ−Ｐｔ系合金が有する耐食性の喪失等多
くの悪影響が顕著になるためである。Cr, Co, Ni and B, C, A
1, Si, Ti, Mn, Cu, Ge, Y, Pd, Ta,
One or two of Nb, Mo, W, Ir, Ag, Au
This is because the effect of addition cannot be obtained if the total amount of the alloys is not less than 0.001% and the total amount thereof is not less than 35%. This is because many adverse effects such as loss of corrosion resistance of the -Pt alloy become remarkable.
【００２８】軟磁性合金の製造方法に関し，インゴット
に加工率３０％以上加工を加えるのは，鋳造組織をこわ
して緻密な構造とし，５００℃以上融点以下の温度で均
質化熱処理後，４００℃以上融点以下の温度で時効処理
を施すと，微細結晶組織となり，磁気特性の向上がはか
れることによる。With respect to the method of manufacturing a soft magnetic alloy, the reason why the ingot is worked at a working rate of 30% or more is to break the casting structure into a dense structure, perform a homogenizing heat treatment at a temperature of 500 ° C. or more and a melting point or less, and then 400 ° C. or more. When the aging treatment is performed at a temperature lower than the melting point, a fine crystal structure is formed, and the magnetic properties are improved.
【００２９】機械加工による製造が困難な形態の場合
は，精密鋳造法を含むロストワックス法等によって直
接，所望形状を作製し，これに４００℃以上融点以下の
温度で熱処理後，適切な冷却速度で冷却することによっ
て軟磁気特性を得ることができる。In the case of a form difficult to manufacture by machining, a desired shape is directly produced by a lost wax method including a precision casting method, and a heat treatment at a temperature of 400 ° C. or more and a melting point or less is performed. The soft magnetic characteristics can be obtained by cooling at the temperature.
【００３０】図１および図２は代表的な合金のアノード
分極曲線を示し，また図３および図４にはＦｅ−Ｐｔ系
２元合金を急冷処理後６００℃の温度に保持した場合の
保磁力ＨＣと飽和磁束密度ＢＳの時効処理時間に対する
変化を示した。FIGS. 1 and 2 show the anodic polarization curves of typical alloys. FIGS. 3 and 4 show the coercive force when the Fe—Pt-based binary alloy was kept at 600 ° C. after quenching. shows a change with respect to aging time of H C and the saturation magnetic flux density B S.
【００３１】表１には代表的な合金を，３７℃に保った
生理食塩水中に７日間浸積した後，溶出元素の量を測定
した結果を示した。また表２から表５には熱処理を変え
た場合の各種Ｆｅ−Ｐｔ系合金の保磁力ＨＣと飽和磁束
密度ＢＳの値を示した。Table 1 shows the results obtained by immersing a typical alloy in physiological saline kept at 37 ° C. for 7 days and then measuring the amount of eluted elements. Also from Table 2 to Table 5 shows the values of the coercive force H C and the saturation magnetic flux density B S of various Fe-Pt alloy in the case of changing the heat treatment.
【００３２】[0032]
【表１】 [Table 1]
【００３３】[0033]
【表２】 [Table 2]
【００３４】[0034]
【表３】 [Table 3]
【００３５】[0035]
【表４】 [Table 4]
【００３６】[0036]
【表５】 [Table 5]
【００３７】[0037]
【実施例】以下，上記の各特性を示す合金を用いた実施
例に基づいて本発明を説明する。 〔実施例１〕高周波溶解炉により，真空中でＰｔ３３
％，残部Ｆｅと少量の不純物からなる２元合金を溶解
し，金型鋳造によって外径８ｍｍ×長さ６０ｍｍのイン
ゴットを得た。これを冷間スエージングにより減面率８
５％まで加工し，外径約３ｍｍの丸棒を得た。これより
長さ３０ｍｍを切り出し，真空中において１０００℃の
温度で５時間加熱した後大気中冷却した。０．９％生理
食塩水中におけるアノード分極特性から，この合金の自
然電極電位は０．２ＶｖｓＮＨＥと正で高い値が得ら
れ，孔食電位も１．３ＶｖｓＮＨＥのように良好な値で
あった。また，保磁力Ｈｃは２．１Ｏｅ，飽和磁束密度
は１４．１ｋＧであり，これらは，耐食性ステンレス鋼
と比較して，軟磁気特性は多少劣るものの耐食性は非常
に良好であった。同一断面を有する，最大エネルギー積
が１５ＭＧＯｅのＦｅ−Ｐｔ系磁石合金との間に作用す
る吸引力は，長さ方向では８１０ｇｆに及び，直径方向
に並列させた場合は４６０ｇｆであった。前者は小型電
磁弁等に用いた場合実用可能な吸引力である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments using alloys having the above-mentioned characteristics. [Example 1] Pt33 in a vacuum using a high-frequency melting furnace
%, A binary alloy comprising the balance Fe and a small amount of impurities was melted, and an ingot having an outer diameter of 8 mm and a length of 60 mm was obtained by die casting. This is reduced by cold swaging to 8
By processing to 5%, a round bar having an outer diameter of about 3 mm was obtained. A 30 mm length was cut out from this, heated in a vacuum at a temperature of 1000 ° C. for 5 hours, and then cooled in the atmosphere. From the anodic polarization characteristics in 0.9% saline, the natural electrode potential of this alloy was as high as 0.2 V vs. NHE, which was a positive value, and the pitting potential was as good as 1.3 V vs. NHE. In addition, the coercive force Hc was 2.1 Oe and the saturation magnetic flux density was 14.1 kG. These were very good in corrosion resistance although their soft magnetic properties were somewhat inferior to those of corrosion-resistant stainless steel. The attractive force acting between the Fe-Pt-based magnet alloy having the same cross section and the maximum energy product of 15 MGOe was 810 gf in the length direction and 460 gf in the case of being arranged in parallel in the diameter direction. The former is a practically applicable suction force when used for a small solenoid valve or the like.
【００３８】〔実施例２〕高周波溶解炉により，真空中
で，原子比にてＰｔ２９％，Ｎｂ１％および残部Ｆｅと
少量の不純物からなる合金を溶解し，金型鋳造によって
外径８ｍｍ×長さ６０ｍｍのインゴットを得た。これか
ら長さ２ｍｍの部分を切り出し，１０００℃の温度で５
時間の均質化処理後炉中冷却した。この円板状試料の表
面を鏡面研摩した後，１５ＭＧＯｅの最大エネルギー積
を有するＦｅ−Ｐｔ系磁石合金との間に作用する吸引力
を測定したところ，実用上充分な強度の５６０ｇｆが得
られた。また，両者を組合わせた状態で０．９％生理食
塩水中に７日間浸漬したところ，Ｆｅが５．０μｇ／ｃ
ｍ２溶出したが，ＮｂおよびＰｔの溶出量は検出限界以
下の微量であった。薄手の円板形状は磁気チャック等の
電磁部品と同等の寸法を有し，腐食ガス等の流路におい
て実用可能な吸引力である。Example 2 An alloy composed of 29% of Pt, 1% of Nb and the balance of Fe and a small amount of impurities was melted in a vacuum using a high frequency melting furnace in an atomic ratio, and the outer diameter was 8 mm × length by die casting. A 60 mm ingot was obtained. From this, a 2 mm long portion is cut out and cut at a temperature of 1000 ° C. for 5 minutes.
After time homogenization, the furnace was cooled. After mirror-polishing the surface of the disk-shaped sample, the attractive force acting between the disk and the Fe-Pt-based magnet alloy having a maximum energy product of 15 MGOe was measured. As a result, 560 gf of sufficient strength for practical use was obtained. . When the two were combined and immersed in 0.9% saline for 7 days, the Fe content was 5.0 μg / c.
and m 2 elution, but elution of Nb and Pt had the following trace detection limit. The thin disk shape has a size equivalent to that of an electromagnetic component such as a magnetic chuck, and is a suction force that can be practically used in a flow path of a corrosive gas or the like.
【００３９】〔実施例３〕高周波溶解炉により，真空中
でＰｔ２８％，Ｃｒ７％，Ｎｂ１．５％，Ｓｉ０．５％
および残部Ｆｅと少量の不純物からなる合金を溶解し，
金型鋳造によって，外径６ｍｍ×長さ８０ｍｍのインゴ
ットを得た。インゴットを冷間で鍛造とロール圧延によ
り加工率９０％以上加工して厚さ０．７ｍｍ×幅８ｍｍ
の板状に整形し，これから長さ２０ｍｍの部分を切り出
した。これを１０００℃の温度で２４時間均質化熱処理
し，水中に投入後，さらに真空中において６００℃の温
度で５時間加熱後大気中冷却した。この薄板状試料の表
面を研摩して平滑化後，同一面積の最大エネルギー積１
５ＭＧＯｅを有するＦｅ−Ｐｔ系磁石合金と接触させ，
０．９％生理食塩水中に７日間浸漬したところ，Ｆｅが
４．６μｇ／ｃｍ２，Ｃｒが０．０５μｇ／ｃｍ２，Ｓ
ｉが０．０２μｇ／ｃｍ２溶出し，ＮｂおよびＰｔは検
出限界値以下であった。この薄板は，***閉鎖等の目的
で生体内埋め込みを想定した寸法の例であり，この後プ
レス等によって所望の形態に整形する。厚さ方向に着磁
し，両者を組み合わせて整合させた状態での吸引力は４
３０ｇｆであり，実用上有効な値であった。Example 3 Pt 28%, Cr 7%, Nb 1.5%, Si 0.5% in a vacuum using a high frequency melting furnace
And an alloy consisting of a balance of Fe and a small amount of impurities,
An ingot having an outer diameter of 6 mm and a length of 80 mm was obtained by die casting. The ingot is cold forged and rolled to a working ratio of 90% or more and has a thickness of 0.7 mm x a width of 8 mm.
, And a 20 mm long portion was cut out from the plate. This was subjected to a homogenizing heat treatment at a temperature of 1000 ° C. for 24 hours, poured into water, further heated in a vacuum at a temperature of 600 ° C. for 5 hours, and then cooled in the air. After polishing and smoothing the surface of this thin sample, the maximum energy product of the same area is 1
5MGOe is brought into contact with a Fe-Pt based magnet alloy,
Was immersed in 0.9% saline for seven days, Fe is 4.6μg / cm 2, Cr is 0.05μg / cm 2, S
i was eluted at 0.02 μg / cm 2 , and Nb and Pt were below the detection limit. This thin plate is an example of a size assumed to be implanted in a living body for the purpose of closing a lip and the like, and thereafter, is shaped into a desired shape by a press or the like. The attractive force is 4 when magnetized in the thickness direction and both are combined and aligned.
30 gf, which was a practically effective value.
【００４０】〔実施例４〕真空雰囲気中において高周波
溶解炉とＡｒガス圧迫鋳造法を組合わせた精密鋳造によ
り，Ｐｔ１７％，Ｃｒ２０％，Ｎｂ３％および残部Ｆｅ
と少量の不純物からなる合金を，歯科補綴物の内冠の形
態に鋳造し，真空中において１０００℃の温度で５間加
熱後大気中冷却した。同様の鋳造方法によって作製した
１５ＭＧＯｅの最大エネルギー積を有するＦｅ−Ｐｔ系
磁石合金からなる外冠と組合わせ，０．９％生理食塩水
中に７日間浸漬したところ，Ｆｅが３．９μｇ／ｃ
ｍ２，Ｃｒが０．０３μｇ／ｃｍ２溶出し，Ｎｂおよび
Ｐｔは検出限界以下であった。これは，歯科分野におい
て通常観測される値以下の小さな溶出量である。また，
接触面を整合させた両者間に作用する吸引力は，６１０
ｇｆであり，実用上十分な吸引力であった。Example 4 Pt 17%, Cr 20%, Nb 3% and the balance Fe were subjected to precision casting in a vacuum atmosphere by combining a high-frequency melting furnace and Ar gas compression casting.
An alloy consisting of and a small amount of impurities was cast in the form of an inner crown of a dental prosthesis, heated in a vacuum at a temperature of 1000 ° C. for 5 minutes, and then cooled in the atmosphere. Combined with an outer crown made of a Fe-Pt-based magnet alloy having a maximum energy product of 15MGOe produced by the same casting method, and immersed in 0.9% saline for 7 days, Fe was 3.9 µg / c.
m 2 and Cr eluted at 0.03 μg / cm 2 , and Nb and Pt were below the detection limit. This is a small elution amount below the value normally observed in the dental field. Also,
The suction force acting between the two with the contact surfaces aligned is 610
gf, which was a practically sufficient suction force.
【００４１】[0041]
【発明の効果】従来用いられてきた磁性ステンレス鋼に
よるヨーク，キーパー，インプラント等はいずれも構成
元素のＦｅ，Ｃｒの溶出量が多く，特に，人体に対して
アレルギーを生じさせると考えられているＮｉの溶出が
懸念されている。本発明に関わる合金は，生体毒性に対
して極めて高い安全性を有するＰｔとＦｅ元素を主成分
とし，副成分は耐食性に優れ，且つ軟磁気特性の向上に
有効な元素から構成される。従ってこれらの効果によ
り，生体表面や口腔内で安全に使用できる生体適合性に
優れ，且つ耐食性の高い軟磁性合金が得られ，市販の磁
性アタッチメントと組合わせた場合は勿論のこと，Ｆｅ
−Ｐｔ系磁石との組合わせ構造とした場合には，特に優
れた効果を発揮し，生体内における磁石の積極的な活用
を可能とする。他に，磁気遮蔽効果，磁気誘導効果等，
軟磁気特性を有する材料の一般的な特性を活かした応用
例えば，電磁部品，電磁機器，医療・健康用具，歯科補
綴物のキーパーならびに生体内埋込み用機能性部品に適
しているので，工業的にも非常に有用な軟磁性合金であ
る。The yokes, keepers, implants and the like made of magnetic stainless steel which have been conventionally used all have a large amount of elution of the constituent elements Fe and Cr, and are considered to cause allergy particularly to the human body. There is concern about the elution of Ni. The alloy according to the present invention contains Pt and Fe elements, which have extremely high safety against biotoxicity, as main components, and the subcomponents are composed of elements having excellent corrosion resistance and effective in improving soft magnetic properties. Therefore, by these effects, a soft magnetic alloy having excellent biocompatibility and high corrosion resistance which can be used safely on the surface of the living body or in the oral cavity can be obtained.
In the case of a combination structure with a Pt-based magnet, a particularly excellent effect is exhibited, and the magnet can be positively used in a living body. In addition, magnetic shielding effect, magnetic induction effect, etc.
Applications that take advantage of the general properties of materials with soft magnetic properties, such as electromagnetic components, electromagnetic devices, medical and health tools, keeper of dental prostheses, and functional components for implanting in vivo Are also very useful soft magnetic alloys.
【図１】図１はＦｅ−３０％Ｐｔ，Ｆｅ−３３％Ｐｔ両
合金のアノード分極曲線であり，比較のためＳＵＳ４４
７Ｊ１についても示した。FIG. 1 is an anodic polarization curve of both Fe-30% Pt and Fe-33% Pt alloys.
7J1 is also shown.
【図２】図２はＦｅ−２９％Ｐｔ−１％Ｎｂ，Ｆｅ−２
８％Ｐｔ−７％Ｃｒ−１．５％Ｎｂ−０．５％Ｓｉ，Ｆ
ｅ−２５％Ｐｔ−１０％Ｃｒ−０．５％Ｎｂ合金のアノ
ード分極曲線を示す。FIG. 2 shows Fe-29% Pt-1% Nb, Fe-2.
8% Pt-7% Cr-1.5% Nb-0.5% Si, F
3 shows an anodic polarization curve of an e-25% Pt-10% Cr-0.5% Nb alloy.
【図３】図３はＦｅ−２６％Ｐｔ，Ｆｅ−３０％Ｐｔ，
Ｆｅ−３３％ＰｔおよびＦｅ−３６％Ｐｔ合金の保磁力
ＨＣの時効処理時間依存性を示している。FIG. 3 shows Fe-26% Pt, Fe-30% Pt,
Shows the aging time dependence of the coercive force H C of Fe-33% Pt and Fe-36% Pt alloy.
【図４】図４はＦｅ−２６％Ｐｔ，Ｆｅ−３０％Ｐｔ，
Ｆｅ−３３％ＰｔおよびＦｅ−３６％Ｐｔ合金の飽和磁
束密度ＢＳの時効処理時間依存性を示している。FIG. 4 shows Fe-26% Pt, Fe-30% Pt,
Shows the aging time dependence of the saturation magnetic flux density B S of Fe-33% Pt and Fe-36% Pt alloy.
Claims (11)
部Ｆｅと少量の不純物からなり，保磁力ＨＣが１０Ｏｅ
以下，飽和磁束密度ＢＳが１０ｋＧ以上を有する耐食性
に優れたことを特徴とする軟磁性合金。At 1. A atomic ratio consists Pt17～37% and the balance Fe and a small amount of impurities, the coercive force H C is 10Oe
Hereinafter, soft magnetic alloy, characterized in that the saturation magnetic flux density B S is excellent in corrosion resistance having the above 10 kG.
とし，副成分としてＣｒ，Ｃｏ，Ｎｉのそれぞれ２５％
以下，Ｂ，Ｃ，Ａｌ，Ｓｉ，Ｔｉ，Ｍｎ，Ｃｕ，Ｇｅ，
Ｙ，Ｐｄ，Ｔａ，Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，Ａｇ，Ａｕの
それぞれ１０％以下のうち１種または２種以上合計０．
００１〜３５％および残部Ｆｅと少量の不純物からな
り，保磁力が１０Ｏｅ以下，飽和磁束密度が１０ｋＧ以
上を有する耐食性に優れた軟磁性合金。2. An atomic ratio of 17 to 37% of Pt as a main component, and 25% of each of Cr, Co, and Ni as subcomponents.
Hereinafter, B, C, Al, Si, Ti, Mn, Cu, Ge,
Each of Y, Pd, Ta, Nb, Mo, W, Ir, Ag, and Au is one or more of 10% or less.
A soft magnetic alloy comprising 001 to 35% and the balance Fe and a small amount of impurities, having a coercive force of 10 Oe or less and a saturation magnetic flux density of 10 kG or more, and having excellent corrosion resistance.
とし，副成分としてＣｒを２５％以下，Ｂ，Ｃ，Ｓｉ，
Ｔｉ，Ｍｎ，Ｇｅ，Ｙ，Ｔａ，Ｎｂ，Ｍｏ，Ｗ，Ｉｒ，
Ａｇのそれぞれ１０％以下のうち１種または２種以上合
計０．００１〜３５％および残部Ｆｅと少量の不純物か
らなり，保磁力が１０Ｏｅ以下，飽和磁束密度が１０ｋ
Ｇ以上を有する生体適合性ならびに耐食性に優れた軟磁
性合金。3. An atomic ratio of which Pt is 26 to 36% as a main component, Cr is 25% or less as an auxiliary component, and B, C, Si,
Ti, Mn, Ge, Y, Ta, Nb, Mo, W, Ir,
One or two or more of each of 10% or less of Ag is 0.001 to 35% in total, and the balance is Fe and a small amount of impurities.
A soft magnetic alloy having G or higher and excellent in biocompatibility and corrosion resistance.
に記載の合金を，高周波炉またはアーク炉で溶解し，得
られたインゴットを熱間または冷間で加工率３０％以上
加工し，これを真空中または非酸化性雰囲気中５００℃
以上融点以下の温度で１分間以上１００時間以下均質化
熱処理した後０．１℃／秒以上１５００℃／秒以下の速
度で冷却することにより，保磁力が１０Ｏｅ以下，飽和
磁束密度が１０ｋＧ以上を有する耐食性に優れた軟磁性
合金の製造方法。4. The alloy according to claim 1, wherein the alloy is melted in a high-frequency furnace or an arc furnace, and the obtained ingot is worked at a working rate of 30% or more by hot or cold. , At 500 ° C. in a vacuum or non-oxidizing atmosphere
After homogenizing heat treatment at a temperature not lower than the melting point and not higher than the melting point for not shorter than 1 minute and not longer than 100 hours, the coercive force is not higher than 10 Oe and the saturation magnetic flux density is not lower than 10 kG. A method for producing a soft magnetic alloy having excellent corrosion resistance.
に記載の合金を，高周波炉またはアーク炉で溶解し，得
られたインゴットを熱間または冷間で加工率３０％以上
加工し，これを真空中または非酸化性雰囲気中５００℃
以上融点以下の温度で１分間以上１００時間以下均質化
熱処理した後０．１℃／秒以上１５００℃／秒以下の速
度で冷却し，これをさらに真空中または非酸化性雰囲気
中４００℃以上融点以下の温度で１分間以上１０００時
間以下加熱した後冷却することにより，保磁力が１０Ｏ
ｅ以下，飽和磁束密度が１０ｋＧ以上を有する耐食性に
優れた軟磁性合金の製造方法。5. The alloy according to claim 1, wherein the alloy is melted in a high-frequency furnace or an arc furnace, and the obtained ingot is worked at a working ratio of 30% or more by hot or cold. , At 500 ° C. in a vacuum or non-oxidizing atmosphere
After homogenizing heat treatment at a temperature not lower than the melting point and not higher than the melting point for not less than 1 minute and not longer than 100 hours, it is cooled at a rate of not lower than 0.1 ° C./sec and not higher than 1500 ° C./sec. By heating at the following temperature for 1 minute to 1000 hours and then cooling, the coercive force
e, a method of manufacturing a soft magnetic alloy having a saturation magnetic flux density of 10 kG or more and excellent corrosion resistance.
より鋳造し，これを真空中または非酸化性雰囲気中４０
０℃以上融点以下の温度で１分間以上１０００時間以下
加熱した後冷却することにより，保磁力が１０Ｏｅ以
下，飽和磁束密度が１０ｋＧ以上を有する生体適合性な
らびに耐食性に優れた軟磁性合金の製造方法。6. The alloy according to claim 3, which is cast by a precision casting method, and is cast in a vacuum or in a non-oxidizing atmosphere.
A method for producing a soft magnetic alloy having a coercive force of 10 Oe or less and a saturation magnetic flux density of 10 kG or more and excellent in biocompatibility and corrosion resistance by heating at a temperature of 0 ° C. or more and a melting point or less and for 1 minute or more and 1000 hours or less. .
に記載の，保磁力が１０Ｏｅ以下，飽和磁束密度が１０
ｋＧ以上を有する耐食性に優れた軟磁性合金からなる電
磁部品。7. The coercive force according to claim 1, wherein the coercive force is not more than 10 Oe and the saturation magnetic flux density is not more than 10 Oe.
An electromagnetic component made of a soft magnetic alloy having a corrosion resistance of at least kG.
に記載の，保磁力が１０Ｏｅ以下，飽和磁束密度が１０
ｋＧ以上を有する耐食性に優れた軟磁性合金と永久磁石
合金から構成される電磁機器。8. The method according to claim 1, wherein the coercive force is 10 Oe or less and the saturation magnetic flux density is 10 Oe.
An electromagnetic device composed of a soft magnetic alloy having a kG or more and excellent in corrosion resistance and a permanent magnet alloy.
下，飽和磁束密度が１０ｋＧ以上を有する生体適合性な
らびに耐食性に優れた軟磁性合金からなる医療・健康用
具。9. A medical / health tool according to claim 3, comprising a soft magnetic alloy excellent in biocompatibility and corrosion resistance having a coercive force of 10 Oe or less and a saturation magnetic flux density of 10 kG or more.
以下，飽和磁束密度が１０ｋＧ以上を有する，生体適合
性ならびに耐食性に優れた軟磁性合金からなる歯科補綴
物のキーパー。10. The coercive force according to claim 3, wherein the coercive force is 10 Oe.
Hereinafter, a keeper of a dental prosthesis made of a soft magnetic alloy having a saturation magnetic flux density of 10 kG or more and having excellent biocompatibility and corrosion resistance.
以下，飽和磁束密度が１０ｋＧ以上を有する，生体適合
性ならびに耐食性に優れた軟磁性合金からなる生体内埋
込み用機能性部品。11. The coercive force according to claim 3, wherein the coercive force is 10 Oe.
Hereinafter, a functional part for implanting in a living body made of a soft magnetic alloy having a saturation magnetic flux density of 10 kG or more and excellent in biocompatibility and corrosion resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10311570A JP2000104141A (en) | 1998-09-28 | 1998-09-28 | Soft magnetic alloy excellent in corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10311570A JP2000104141A (en) | 1998-09-28 | 1998-09-28 | Soft magnetic alloy excellent in corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000104141A true JP2000104141A (en) | 2000-04-11 |
Family
ID=18018829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10311570A Withdrawn JP2000104141A (en) | 1998-09-28 | 1998-09-28 | Soft magnetic alloy excellent in corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000104141A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143188A (en) * | 2000-11-15 | 2002-05-21 | Gc Corp | Method of making structure for magnetic force attraction type intraoral dental prosthetic appliance |
| EP1593132A2 (en) * | 2003-01-30 | 2005-11-09 | Metglas, Inc. | Gapped amorphous metal-based magnetic core |
| EP1724365A2 (en) * | 2004-10-12 | 2006-11-22 | Heraeus, Inc. | Low oxygen content compositions |
| US7329383B2 (en) * | 2003-10-22 | 2008-02-12 | Boston Scientific Scimed, Inc. | Alloy compositions and devices including the compositions |
| CN102982956A (en) * | 2012-11-08 | 2013-03-20 | 建德市易通金属粉材有限公司 | High magnetic permeability and low loss metal soft magnetic material powder and preparation method thereof |
| EP1404391B2 (en) † | 2001-03-30 | 2014-01-15 | Boston Scientific Limited | Platinum - stainless steel alloy and radiopaque stents |
| US9339398B2 (en) | 2012-04-26 | 2016-05-17 | Medtronic Vascular, Inc. | Radiopaque enhanced nickel alloy for stents |
| US9592135B2 (en) | 2012-04-26 | 2017-03-14 | Medtronic Vascular, Inc. | Radiopaque enhanced cobalt alloy for stents |
-
1998
- 1998-09-28 JP JP10311570A patent/JP2000104141A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143188A (en) * | 2000-11-15 | 2002-05-21 | Gc Corp | Method of making structure for magnetic force attraction type intraoral dental prosthetic appliance |
| JP4536245B2 (en) * | 2000-11-15 | 2010-09-01 | 株式会社ジーシー | Method for producing magnetic adsorption type intraoral dental prosthesis structure |
| EP1404391B2 (en) † | 2001-03-30 | 2014-01-15 | Boston Scientific Limited | Platinum - stainless steel alloy and radiopaque stents |
| EP1593132A2 (en) * | 2003-01-30 | 2005-11-09 | Metglas, Inc. | Gapped amorphous metal-based magnetic core |
| EP1593132A4 (en) * | 2003-01-30 | 2011-03-09 | Metglas Inc | Gapped amorphous metal-based magnetic core |
| US7329383B2 (en) * | 2003-10-22 | 2008-02-12 | Boston Scientific Scimed, Inc. | Alloy compositions and devices including the compositions |
| EP1724365A2 (en) * | 2004-10-12 | 2006-11-22 | Heraeus, Inc. | Low oxygen content compositions |
| EP1724365A3 (en) * | 2004-10-12 | 2010-02-17 | Heraeus, Inc. | Low oxygen content compositions |
| US9339398B2 (en) | 2012-04-26 | 2016-05-17 | Medtronic Vascular, Inc. | Radiopaque enhanced nickel alloy for stents |
| US9592135B2 (en) | 2012-04-26 | 2017-03-14 | Medtronic Vascular, Inc. | Radiopaque enhanced cobalt alloy for stents |
| US11141296B2 (en) | 2012-04-26 | 2021-10-12 | Medtronic Vascular, Inc. | Radiopaque enhanced cobalt alloy for stents |
| CN102982956A (en) * | 2012-11-08 | 2013-03-20 | 建德市易通金属粉材有限公司 | High magnetic permeability and low loss metal soft magnetic material powder and preparation method thereof |
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