JPS58141354A - Wear resistant magnetic alloy with high magnetic permeability - Google Patents
Wear resistant magnetic alloy with high magnetic permeabilityInfo
- Publication number
- JPS58141354A JPS58141354A JP57021204A JP2120482A JPS58141354A JP S58141354 A JPS58141354 A JP S58141354A JP 57021204 A JP57021204 A JP 57021204A JP 2120482 A JP2120482 A JP 2120482A JP S58141354 A JPS58141354 A JP S58141354A
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- Prior art keywords
- magnetic
- alloy
- flux density
- hardness
- permeability
- 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.)
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Abstract
Description
【発明の詳細な説明】
本発明は、主に耐摩耗性と高透磁率ばかりで々<10エ
ルステツドにおける磁束密度(以下B、。DETAILED DESCRIPTION OF THE INVENTION The present invention mainly focuses on wear resistance and high permeability, and magnetic flux density at <10 oersteds (hereinafter referred to as B).
と略す)として8000ガウス以上を要求される各種磁
気ヘッドコア材等に使用される耐摩耗性高透磁率磁性合
金に関するものである。The present invention relates to a wear-resistant, high permeability magnetic alloy used in various magnetic head core materials, etc., which are required to have a magnetic permeability of 8,000 Gauss or more.
一般に、磁気へラドコア材用磁性材料が具備すべき特性
は、磁気テープの摺動に対する耐摩耗性が良く、磁気特
性が優れること等である。Generally, the characteristics that a magnetic material for a magnetic helad core material should have include good wear resistance against sliding of a magnetic tape and excellent magnetic properties.
これらの緒特性を満足する磁気ヘッドコア材としては、
従来より、パーマロイ、Fe−8i−A1合金、フェラ
イト等が使用されている。Fe−8i−At合金は金属
磁性材料の中では耐摩耗性が良(、VTR・オーディオ
用磁気ヘッド等に用いられているが、材質固有の脆さの
ために鍛造・圧延等の加工が極めて困難であり、かつコ
ア片への加工においても難点があり量産性に劣る。また
フェライトは電気比抵抗が高く、耐摩耗性が優れている
ことからVTR用磁気ヘッドには好適な材料のようであ
るが、飽和磁束密度および透磁率が低いことなどから磁
気へラドコア材としては不十分であり、かつ機械的に脆
弱であるため加工性に劣る。As a magnetic head core material that satisfies these characteristics,
Conventionally, permalloy, Fe-8i-A1 alloy, ferrite, etc. have been used. Fe-8i-At alloy has good wear resistance among metal magnetic materials (and is used in magnetic heads for VTRs and audio, etc., but due to the inherent brittleness of the material, processing such as forging and rolling is extremely difficult. It is difficult to process, and it is also difficult to process into core pieces, making it difficult to mass-produce.Furthermore, ferrite has a high electrical resistivity and excellent wear resistance, so it seems to be a suitable material for VTR magnetic heads. However, it is insufficient as a magnetic rad core material due to its low saturation magnetic flux density and low magnetic permeability, and it is mechanically fragile and has poor workability.
パーマロイは耐摩耗性の点では、 Fe−8t−At合
金、フェライトに比べると若干劣るものの。Although permalloy is slightly inferior to Fe-8t-At alloy and ferrite in terms of wear resistance.
軟質磁性材料の中でも特に優れた磁性材料であす、シか
も加工性が良好であり比較的安価である等の理由から工
業的には磁気へラドコア材としてパーマロイが広く用い
られている。Permalloy is widely used industrially as a magnetic core material because it is a particularly excellent magnetic material among soft magnetic materials, has good workability, and is relatively inexpensive.
近年、オーディオ用磁気記録媒体として高密度記録能力
を有するメタルテープ(別称9合金テープ)が実用化さ
れるに至り、磁気ヘッド用コア材としてパーマロイの高
磁束密度化が重要課題となっている。現在、多用されて
いるパーマロイコア材のBIGは5000〜7000ガ
ウス程度であるが、メタルテープ対応磁気へラドコア材
としては少なくとも8000ガウス以上が必要であるす
なわち飽和磁束密度が高<°、他の磁気特性にも優れ、
かつ耐摩耗性の良好な磁気へラドコア用パーマロイを求
める要望が強い。In recent years, metal tapes (also known as 9-alloy tapes) having high-density recording capabilities have come into practical use as magnetic recording media for audio, and increasing the magnetic flux density of permalloy as a core material for magnetic heads has become an important issue. Currently, the BIG of the permalloy core material that is widely used is about 5000 to 7000 Gauss, but the BIG of the magnetic core material compatible with metal tape is at least 8000 Gauss or more. Excellent characteristics,
There is a strong demand for permalloy for magnetic helad cores that also has good wear resistance.
本発明は上記要望に対してなされたもので。The present invention has been made in response to the above needs.
飽和磁束密度、透磁率が高く、かつ耐摩耗性の優れた新
しい磁性合金、すなわち磁気録音・再生装置の磁気ヘッ
ド用コア材として特に優れた合金を提供しようとするも
のである。The present invention aims to provide a new magnetic alloy with high saturation magnetic flux density, high magnetic permeability, and excellent wear resistance, that is, an alloy that is particularly excellent as a core material for a magnetic head of a magnetic recording/playback device.
従来より磁気へラドコア用パーマロイとしては、一般に
8O−Ni−Fe合金に第三元素さらには第四元素、第
五元素を添加することにより磁気特性ならびに耐摩耗性
を改善した。いわゆる多元系パーマロイが用いられてい
る。しかし。Conventionally, as permalloy for magnetic helad cores, magnetic properties and wear resistance have been generally improved by adding a third element, a fourth element, and a fifth element to an 8O-Ni-Fe alloy. So-called multi-component permalloy is used. but.
現用の多元系パーマロイは特に耐摩耗性を改善するため
の添加元素の添加量が多く、これが飽和磁束密度を低下
させる要因となっていた。そこで飽和磁束密度をほとん
ど低下させることなく耐摩耗性を著しく向上させるよう
な添加元素について研究を重ねた結果+ Agが最適で
ある ・ことを見い出して本発明に至ったもので
ある。The currently used multi-component permalloy contains a large amount of additive elements to improve wear resistance, and this has been a factor in reducing the saturation magnetic flux density. Therefore, as a result of repeated research on additive elements that can significantly improve wear resistance without substantially reducing the saturation magnetic flux density, we have discovered that Ag is optimal, leading to the present invention.
ところで耐摩耗性を向上させる一つの方策としてヘッド
コア材自身の硬さを高めるという方法があるが、耐摩耗
性の向上とコア材の硬化とは必要十分条件ではない。コ
ア材・を硬化させるということは耐摩耗性向上のための
十分条件であり、耐摩耗性を向上させるためのアプロー
チとしてはコア材自身の硬さを高めることで十分である
。故に本発明においては耐摩耗性の改善策として、コア
材の硬化という方法をとることにした。By the way, one way to improve wear resistance is to increase the hardness of the head core material itself, but improving wear resistance and hardening the core material are not necessary and sufficient conditions. Hardening the core material is a sufficient condition for improving wear resistance, and increasing the hardness of the core material itself is sufficient as an approach to improving wear resistance. Therefore, in the present invention, we decided to use a method of hardening the core material as a measure to improve wear resistance.
材料の硬化法として固溶硬化法および析出硬化法が代表
的であり、かつ最も効果的な方法である。本発明で用い
たAgは固溶硬化に特に優れた添加元素である。すなわ
ちAgは0.1%(重量%、以下同じ)の添加によりビ
ッカース硬さで1O程度上昇させる効果があり、従来用
いられている硬さ向上のための添加元素であるTi。Solid solution hardening and precipitation hardening are typical methods for hardening materials, and are the most effective methods. Ag used in the present invention is an additive element particularly excellent in solid solution hardening. That is, the addition of 0.1% (weight %, same hereinafter) of Ag has the effect of increasing the Vickers hardness by about 1O, compared to Ti, which is a conventionally used additive element for improving hardness.
Nbは、0.1%添加でそれぞれビッカース硬さをせい
ぜい4および1程度しか上昇させ得なかった。このこと
からAgは固溶硬化させるのに卓効があることがわかる
。またAgはNbおよびMo。When Nb was added in an amount of 0.1%, the Vickers hardness could only be increased by about 4 and 1, respectively. This shows that Ag is extremely effective for solid solution hardening. Moreover, Ag is Nb and Mo.
Ti、 V、 Zr、 Ta、W、白金属元素(Ru、
Rh、 Pd、 Os。Ti, V, Zr, Ta, W, platinum metal elements (Ru,
Rh, Pd, Os.
Ir、 Pt)とを複合添加させることにより硬さのみ
ならず磁気特性を一層向上させ得る。By adding Ir, Pt) in combination, not only the hardness but also the magnetic properties can be further improved.
すなわち本発明は上記の知見に基づくものであり、第一
の発明は、 Ni 70〜84.9%、 Ag O,0
05〜1.5チ、 Nb 1.0〜6.0チおよび残部
主としてFeからなり10エルステツドにおける磁束密
度が8000ガウス以上を有することを特徴とする耐摩
耗性高透磁率磁性合金である。また第二の発明は。That is, the present invention is based on the above-mentioned knowledge, and the first invention comprises: Ni 70-84.9%, Ag O,0
This is a wear-resistant, high permeability magnetic alloy characterized by having a magnetic flux density of 8,000 Gauss or more at 10 oersteds, consisting of 0.05 to 1.5 inches, Nb 1.0 to 6.0 inches, and the balance mainly Fe. And the second invention.
Ni 70〜84.9%、 Ag 0.005〜1.5
%、 Nb 1.0〜6.0%および残部Feを主成分
とし、副成分としてMo。Ni 70-84.9%, Ag 0.005-1.5
%, Nb 1.0 to 6.0% and the balance Fe as the main components, and Mo as a subcomponent.
Ti 、 V、 Zr、 Ta、W、白金属元素の一種
また11=二種以上の総量で0.1〜4.0%を含有し
、 10エルステツドにおける磁束密度が8000ガウ
ス以上を有することを特徴とする耐摩耗性高透磁率磁性
合金である。なお上記発明磁性合金のNi 、 Fe以
外の添加元素の総量が3.0〜8.0チの範囲よりなる
ものである。Contains Ti, V, Zr, Ta, W, and one or more platinum metal elements in a total amount of 0.1 to 4.0%, and has a magnetic flux density of 8000 Gauss or more at 10 oersted It is a wear-resistant, high permeability magnetic alloy. The total amount of added elements other than Ni and Fe in the magnetic alloy of the invention is in the range of 3.0 to 8.0.
本発明をさらに詳細に説明する。The present invention will be explained in further detail.
本発明において、Niは70〜84.9%で優れた磁気
持性を有するが、 Ni量が70%未満では透磁率が低
下し、また84.9%を超えると飽和磁束密度が低下し
B、oで8000ガウスより低くなり、いずれも磁気へ
ラドコア材としての実用に供し得々いからである。In the present invention, Ni has excellent magnetic properties when it is 70 to 84.9%, but when the Ni amount is less than 70%, the magnetic permeability decreases, and when it exceeds 84.9%, the saturation magnetic flux density decreases. , o is lower than 8000 Gauss, and neither of them can be put to practical use as a magnetic rad core material.
Agは硬さの向上および透磁率の向上のために0.00
5〜1.51の範囲で添加される。Agの添加量がo、
ooss未満であると硬さ向上の寄与が少なく、さらに
透磁率をも上昇させ得ない。また1、5チを超えると、
硬さは向上するが透磁率の低下が著しく、さらに加工性
を著しく害するという欠点が生じる。Ag is 0.00 to improve hardness and magnetic permeability.
It is added in a range of 5 to 1.51. The amount of Ag added is o,
If it is less than ooss, there will be little contribution to improving hardness, and furthermore, magnetic permeability cannot be increased. Also, if it exceeds 1.5 inches,
Although the hardness is improved, the magnetic permeability is significantly lowered, and furthermore, the workability is significantly impaired.
Nbは1.0〜6.0チの範囲で添加され、Agとの相
乗作用により硬さを一層高めると共に透磁率を向上させ
る。Nbが11s未満ではAgとの相乗作用による硬さ
向上の効果が少なく、6%を超えるとfltoが800
0ガウスより実像下してしまう。Nb is added in a range of 1.0 to 6.0 inches, and works synergistically with Ag to further increase hardness and improve magnetic permeability. When Nb is less than 11s, the effect of improving hardness due to synergistic action with Ag is small, and when it exceeds 6%, flto is 800
The real image becomes lower than 0 Gauss.
また9本発明における第二あ発明においては。Also, in the second invention of the present invention.
上記の発明における磁性合金にMo、Ti、V、Zr。The magnetic alloy in the above invention includes Mo, Ti, V, and Zr.
Ta、W、白金属元素の一種または二種以上が総量で0
.1〜4.0%添加されている。これらはいずれもAg
あるいはAgおよびNbとの相乗作用により硬さを向上
させ、さらには磁歪定数λ3と磁気異方性定数Kを下げ
ることにより磁気特性を改良させる元素である。添加量
が0.1−未満では添加効果が薄(,40%を超えると
磁気特性が劣化する。The total amount of one or more of Ta, W, and platinum metal elements is 0
.. It is added in an amount of 1 to 4.0%. All of these are Ag
Alternatively, it is an element that improves hardness through a synergistic effect with Ag and Nb, and further improves magnetic properties by lowering the magnetostriction constant λ3 and the magnetic anisotropy constant K. If the amount added is less than 0.1%, the effect of addition is weak (and if it exceeds 40%, the magnetic properties will deteriorate.
また9本発明においてNiおよびFe以外の添加元素の
総量が6.0〜8.0%の範囲とすれば硬さおよび磁気
特性は優れる。しかし、6.0%未満では。Further, in the present invention, if the total amount of additive elements other than Ni and Fe is in the range of 6.0 to 8.0%, the hardness and magnetic properties are excellent. However, below 6.0%.
硬さHvが150以下で実用的に不十分となり。Hardness Hv of 150 or less is insufficient for practical use.
8.0チを超えるとB1゜が8000ガクスを下回り、
磁気へラドコア材として実用に供し得なくなる。When it exceeds 8.0 g, B1° falls below 8000 gax,
It becomes impossible to put it to practical use as a magnetic herad core material.
さらに脱酸剤あるいは脱硫剤として使用されるSt 、
kl、 Mg 、 Ca 、 Mn等が総量において
1チ以下含有されることは許される。Furthermore, St, which is used as a deoxidizing agent or desulfurizing agent,
It is permissible for Kl, Mg, Ca, Mn, etc. to be contained in a total amount of 1 or less.
以下1本発明の詳細な説明する。The present invention will be explained in detail below.
〈実施例−1〉
第1表に示す組成の合金試料1’l&11〜6を真空中
にて高周波誘導炉で溶解し9組成的に均一なインゴット
を得た。このインゴットを適当な温度で熱間圧延し4■
厚の板に加工し、その後冷間圧延と必要ならば中間熱処
理によす0,2■厚の板とした。この板より外径45■
、内径55wm’fll状試料を打ち抜き試験材とした
。<Example-1> Alloy samples 1'l & 11 to 6 having the compositions shown in Table 1 were melted in a high frequency induction furnace in vacuum to obtain 9 compositionally uniform ingots. This ingot is hot rolled at an appropriate temperature and 4■
This was processed into a thick plate, and then subjected to cold rolling and, if necessary, intermediate heat treatment to obtain a 0.2 mm thick plate. Outer diameter 45cm from this board
A full-shaped sample with an inner diameter of 55 wm was used as a punching test material.
第1表に示した組成の試験材にSOO〜1300”Cで
の最適な温度で磁性焼鈍を施した後、硬さHv(ビッカ
ース硬さ)および磁気特性を測定した。The test materials having the compositions shown in Table 1 were subjected to magnetic annealing at an optimum temperature of SOO to 1300''C, and then the hardness Hv (Vickers hardness) and magnetic properties were measured.
測定結果は第1表中に示す。本発明のようにNi−Fe
にAg及びNbを含むことによりw B10が8000
ガウスそしてHvが150以上となっていることが分る
。The measurement results are shown in Table 1. As in the present invention, Ni-Fe
By including Ag and Nb, w B10 is 8000
It can be seen that Gauss and Hv are over 150.
以下余白
第1表
〈実施例−2〉
第2表に示す組成の合金試料Na7〜20を実施例−1
と同様な方法で製造し、硬さHv(ビッカース硬さ)お
よび磁気特性を測定した。結果は第2表中に示す。Table 1 below (margin) <Example-2> Example-1 Alloy samples Na7-20 having the composition shown in Table 2
The hardness Hv (Vickers hardness) and magnetic properties were measured. The results are shown in Table 2.
以下余白
第2表に示した比較例は従来より用いられている高硬度
パーマロイであり、いずれも硬さHvが200程度であ
るがl1toが5000〜6oooガウスと低く、現在
要求されているB8゜が8000ガウス以上を満足して
おらず実用には供し得ない。これに対し本発明によれば
yBl。が8000ガウス以上を満足しており硬さHv
も150以上であり、高磁束密度で耐摩耗“性高透磁率
磁性合金として最適で、この結果要求されるヘッドコア
材として好適である。The comparative examples shown in Table 2 below are high hardness permalloys that have been used conventionally, and all have hardness Hv of about 200, but l1to is as low as 5000 to 6ooo Gauss, which is currently required at B8°. does not satisfy 8000 Gauss or more and cannot be put to practical use. On the other hand, according to the present invention, yBl. satisfies over 8000 Gauss and hardness Hv
is 150 or more, making it ideal as a magnetic alloy with high magnetic flux density, wear resistance, and high magnetic permeability, and as a result, it is suitable as a required head core material.
以上述べた如く本発明によれば、硬さHvが150以上
と大であることから耐摩耗性に優れ。As described above, according to the present invention, the hardness Hv is as high as 150 or more, so the wear resistance is excellent.
飽和磁束密度B、。が8000ガウス以上と高く、シか
も保磁力Heは0.020e以下で、一方、μ0は5o
oo。Saturation magnetic flux density B. is high at over 8000 Gauss, and the coercive force He is less than 0.020e, while μ0 is 5o
oo.
以上で、最適なものは90000以上と磁気特性に優れ
た磁性合金を提供し得る。従って本発明合金をメタルテ
ープ用録音再生磁気ヘッドコア材に適用することにより
録音再生特性が向上する。As described above, it is possible to provide a magnetic alloy with excellent magnetic properties, with the optimal one being 90,000 or more. Therefore, by applying the alloy of the present invention to the core material of a recording/reproducing magnetic head for metal tape, the recording/reproducing characteristics are improved.
また電子計算機、 VTR等高速摺動用磁気へラドコア
材に適用しても好適である。It is also suitable for application to magnetic rad core materials for high-speed sliding applications such as electronic computers and VTRs.
Claims (3)
O,005〜1.5%、 Nb 1.0〜6,0チお
よび残部主としてFeからなり、10エルステツドにお
ける磁束密度が8000ガウス以上を有することを特徴
とする耐摩耗性高透磁率磁性合金。(1) Weight ratio: Ni 70-84.9, Ag
1. A wear-resistant, high permeability magnetic alloy comprising 0.005% to 1.5% Nb, 1.0% to 6.0% Nb, and the balance mainly Fe, and having a magnetic flux density of 8000 Gauss or more at 10 oersteds.
O,005〜1.5%t Nb 1.0〜6.0%お
よび残部Feを主成分とし副成分として、 Mo、Ti
、V、Zr、Ta、W、白金属元素の一種または二種以
上の総量で0,1〜4.0チを含有し、10エルステツ
ドにおける磁束密度が8000ガウス以上を有すること
を特徴とする耐摩耗性高透磁率磁性合金。(2) Weight ratio: Ni 70 to 84.9, Ag
O,005~1.5%t Nb 1.0~6.0% and the balance Fe as the main components, and as subcomponents Mo, Ti
, V, Zr, Ta, W, and one or more platinum metal elements in a total amount of 0.1 to 4.0 H, and has a magnetic flux density of 8000 Gauss or more at 10 oersteds. Abrasive high permeability magnetic alloy.
、Fe以外の添加元素の総量が3.0〜8.0チである
耐摩耗性高透磁率磁性合金。(3) Ni according to claims 1 and 2
, a wear-resistant high permeability magnetic alloy in which the total amount of additive elements other than Fe is 3.0 to 8.0.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57021204A JPS58141354A (en) | 1982-02-15 | 1982-02-15 | Wear resistant magnetic alloy with high magnetic permeability |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57021204A JPS58141354A (en) | 1982-02-15 | 1982-02-15 | Wear resistant magnetic alloy with high magnetic permeability |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58141354A true JPS58141354A (en) | 1983-08-22 |
Family
ID=12048447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57021204A Pending JPS58141354A (en) | 1982-02-15 | 1982-02-15 | Wear resistant magnetic alloy with high magnetic permeability |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58141354A (en) |
-
1982
- 1982-02-15 JP JP57021204A patent/JPS58141354A/en active Pending
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