JPH0423326B2 - - Google Patents
Info
- Publication number
- JPH0423326B2 JPH0423326B2 JP57072761A JP7276182A JPH0423326B2 JP H0423326 B2 JPH0423326 B2 JP H0423326B2 JP 57072761 A JP57072761 A JP 57072761A JP 7276182 A JP7276182 A JP 7276182A JP H0423326 B2 JPH0423326 B2 JP H0423326B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic head
- wear resistance
- alloy
- tape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910002796 Si–Al Inorganic materials 0.000 claims description 13
- 229910001004 magnetic alloy Inorganic materials 0.000 claims description 13
- 150000002500 ions Chemical class 0.000 claims description 10
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 229910052741 iridium Inorganic materials 0.000 claims description 5
- 229910052762 osmium Inorganic materials 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052703 rhodium Inorganic materials 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims 1
- 229910052758 niobium Inorganic materials 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 239000011162 core material Substances 0.000 description 11
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052707 ruthenium Inorganic materials 0.000 description 4
- 229910000889 permalloy Inorganic materials 0.000 description 3
- 229910001035 Soft ferrite Inorganic materials 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/255—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for protection against wear
Description
本発明は、Fe−Si−Al系合金磁気ヘツドコア
材料から成る磁気ヘツドにおいて、磁気テープと
の摺動面の耐摩耗性を改善した磁気ヘツドに関す
るものである。
従来より磁気ヘツドコア材料としてはパーマロ
イ、ソフトフエライトが主として用いられてい
る。しかしパーマロイは優秀な磁気特性を有する
が、耐摩耗性が悪く、一方ソフトフエライトは耐
摩耗性は優れているものの飽和磁束密度が低い上
に、フエライトヘツドではノイズ発生が問題とな
つている。
さらに最近、オーデイオ分野において高保磁力
を有する磁気記録媒体としてメタルテープが普及
しており、また、VTR分野においては狭トラツ
ク化、狭ギヤツプ長化が進んでいることから、高
飽和磁束密度を有する磁気ヘツドコア材が要求さ
れている。このため磁気ヘツドコア材として飽和
磁束密度の高いFe−Si−Al系磁性合金が注目さ
れている。Fe−Si−Al系磁性合金はヘツドコア
材として優れた磁気特性を有しているが、耐摩耗
性の面では金属材料の中では最も優れているもの
のフエライトに比べると若干劣つている。
そこで、Fe−Si−Al系磁性合金の耐摩耗性を
改善する方法としてFe，Si，Alの外に第４元素、
第５元素を添加し、合金自身の硬さを上げて耐摩
耗性を一層向上させる方法が一般に行なわれてい
る。しかし、上記方法では、例えば9.6Si−5.4Al
−Fe合金で10エルステツドにおける磁束密度B10
が9500ガウスであつたものが、第４，第５元素の
添加により磁束密度の低下をきたし、Fe−Si−
Al系合金が本来有する優秀な磁気特性を損ねる
ことになる。
また、Fe−Si−Al系磁性合金で磁気ヘツドコ
アを構成した場合を考えてみると、耐摩耗性が要
求されるのは磁気テープと接する面のみであり、
磁気テープと接しない他の部分は耐摩耗性が要求
されないのであるから、上記の磁気へツドコア材
自身の硬さを上げて耐摩耗性を向上させる方法は
不合理である。
そこで、本発明はFe−Si−Al系磁性合金の磁
気特性を損ねることなく、しかも最も理にかなつ
た耐摩耗性磁気ヘツドを提供することを目的とす
る。
すなわち、本発明は、Fe−Si−Al系磁性合金
を磁気ヘツドコア材として用いいた磁気ヘツドに
おいて、磁気テープとの摺動面にイオン注入を行
なつて当該摺動面の耐摩耗性を改善したものであ
る。ここで注入するイオンの種類として、Cr，
Zr，Ru，Rh，Pd，Os，Ir，およびPtから選ば
れた少なくとも一種のイオンが耐摩耗性を改善さ
せるのに最も効果的である。Cr，Zr，Ru，Pd，
Os，IrおよびPtはそれぞれFe−Si−Al系磁性合
金と合金化して耐摩耗性を向上させる。なおイオ
ン注入層は10μm以下であり、磁気ヘツドコア材
であるFe−Si−Al系磁性合金の磁気的性質を損
ねることはない。
以下、本発明の実施例を説明する。なおこの実
施例は本発明を限定するものではない。
磁気ヘツドコア材はFe−Si−Al系磁性合金と
し、その合成組成（重量％）は9.6％Si−5.4％Al
−Feであり、また磁気ヘツドシールドケースは
パーマロイ合金とし、その合金組成は４％Mo−
５％Cu−14％Fe−Niである。これらを用いてオ
ーデイオカセツトデツキ用磁気ヘツドを製作し、
この磁気ヘツドの磁気テープとの摺動面に、フリ
ーマン型イオン源、あるいはマイクロ波イオン源
を用いて、Cr，Zr，Ru，Rh，Pd，Os，Irおよ
びPtから選ばれた一種のイオンのイオン注入を
行なつた。このようにしてイオン注入された磁気
ヘツドを製作し、実装摩耗試験を行なつた。摩耗
試験としては、磁気テープにはγ−Fe2O3テープ
を使用し、オートリバース型カセツトデツキによ
り連続走行テストを行なつた。この際のテープ速
度は4.75cm／secであり、100時間毎に未使用テー
プと交換した。評価結果の内、200時間連続走行
後の摩耗量を第１表に示す。
結果から明らかなように、本発明によりイオン
注入したFe−Si−Al系磁性合金磁気ヘツドは、
従来のFe−Si−Al系磁性合金磁気ヘツドに比べ
て、耐摩耗性が2/5〜4/5という優れたものであ
る。
The present invention relates to a magnetic head made of a Fe--Si--Al alloy magnetic head core material, which has improved wear resistance on its sliding surface with a magnetic tape. Conventionally, permalloy and soft ferrite have been mainly used as magnetic head core materials. However, although permalloy has excellent magnetic properties, it has poor wear resistance, while soft ferrite has excellent wear resistance but has a low saturation magnetic flux density, and noise generation is a problem in ferrite heads. Furthermore, recently, metal tapes have become popular as magnetic recording media with high coercivity in the audio field, and in the VTR field, narrower tracks and narrower gap lengths are progressing. Head core material is required. For this reason, Fe-Si-Al magnetic alloys with high saturation magnetic flux density are attracting attention as magnetic head core materials. Fe-Si-Al magnetic alloys have excellent magnetic properties as head core materials, but in terms of wear resistance, although they are the best among metal materials, they are slightly inferior to ferrite. Therefore, as a method to improve the wear resistance of Fe-Si-Al magnetic alloys, in addition to Fe, Si, and Al, a fourth element is added.
A commonly used method is to add a fifth element to increase the hardness of the alloy itself to further improve wear resistance. However, in the above method, for example, 9.6Si−5.4Al
−Magnetic flux density B 10 at 10 oersted in Fe alloy
was 9500 Gauss, but due to the addition of the fourth and fifth elements, the magnetic flux density decreased and became Fe-Si-
This will impair the excellent magnetic properties originally possessed by Al-based alloys. Furthermore, if we consider the case where the magnetic head core is made of Fe-Si-Al magnetic alloy, wear resistance is required only on the surface that contacts the magnetic tape.
Since other parts not in contact with the magnetic tape are not required to have wear resistance, the above-mentioned method of increasing the hardness of the magnetic head core material itself to improve wear resistance is unreasonable. Therefore, an object of the present invention is to provide the most logical wear-resistant magnetic head without impairing the magnetic properties of the Fe-Si-Al magnetic alloy. That is, the present invention improves the wear resistance of the sliding surface of a magnetic head using Fe-Si-Al magnetic alloy as the magnetic head core material by implanting ions into the sliding surface of the magnetic tape. It is something. The types of ions implanted here are Cr,
At least one ion selected from Zr, Ru, Rh, Pd, Os, Ir, and Pt is most effective in improving wear resistance. Cr, Zr, Ru, Pd,
Os, Ir, and Pt are alloyed with Fe-Si-Al magnetic alloys to improve wear resistance. The ion implantation layer has a thickness of 10 μm or less, and does not impair the magnetic properties of the Fe-Si-Al magnetic alloy that is the magnetic head core material. Examples of the present invention will be described below. Note that this example does not limit the present invention. The magnetic head core material is a Fe-Si-Al magnetic alloy, and its synthetic composition (weight%) is 9.6%Si-5.4%Al.
-Fe, and the magnetic head shield case is made of permalloy alloy, whose alloy composition is 4%Mo-
It is 5% Cu-14% Fe-Ni. Using these materials, we manufactured a magnetic head for an audio cassette deck.
A type of ion selected from Cr, Zr, Ru, Rh, Pd, Os, Ir and Pt is applied to the sliding surface of the magnetic head against the magnetic tape using a Freeman ion source or a microwave ion source. Ion implantation was performed. A magnetic head implanted with ions was manufactured in this manner, and a mounting wear test was conducted. For the wear test, a γ-Fe 2 O 3 tape was used as the magnetic tape, and a continuous running test was conducted using an auto-reverse type cassette deck. The tape speed at this time was 4.75 cm/sec, and the tape was replaced with a new one every 100 hours. Among the evaluation results, Table 1 shows the amount of wear after 200 hours of continuous running. As is clear from the results, the Fe-Si-Al magnetic alloy magnetic head ion-implanted according to the present invention has
Compared to conventional Fe-Si-Al based magnetic alloy magnetic heads, the wear resistance is 2/5 to 4/5, which is excellent.
【表】
以上述べた如く、Fe−Si−Al系磁性合金を磁
気ヘツドコアに用いた磁気ヘツドにおいて、磁気
テープとの摺動面にCr，Zr，Ru，Rh，Os，Irお
よびPtから選ばれた一種のイオンをイオン注入
することにより、耐摩耗性が著しく向上すること
がわかる。本発明磁気ヘツドは、オーデイオ分
野、VTR分野およびコンピユーター分野に用い
られて、その信頼性を高めることが可能である。[Table] As mentioned above, in a magnetic head using an Fe-Si-Al magnetic alloy for the magnetic head core, the sliding surface with the magnetic tape is made of Cr, Zr, Ru, Rh, Os, Ir, and Pt. It can be seen that wear resistance is significantly improved by implanting one type of ion. The magnetic head of the present invention can be used in the audio field, VTR field, and computer field to improve its reliability.
Claims (1)
コアを有する磁気ヘツドにおいて、前記磁気ヘツ
ドコアの磁気テープとの摺動面にCr，Zr，Ru，
Rh，Pd，Os，lr及びPtのうちから選ばれた少な
くとも一種のイオンを注入して当該摺動面の対摩
耗性を改善したことを特徴とする磁気ヘツド。 ２ 特許請求の範囲第１項の磁気ヘツドにおい
て、上記イオンがCr，Ti，Zr，Nb，Ｂ，Ru，
Rh，Pd，Os，Ir，Pt，ＯおよびＮから選ばれた
少なくとも一種であることを特徴とする磁気ヘツ
ド。[Scope of Claims] 1. In a magnetic head having a magnetic head core made of a Fe-Si-Al magnetic alloy, the sliding surface of the magnetic head core with the magnetic tape is coated with Cr, Zr, Ru,
A magnetic head characterized in that the wear resistance of the sliding surface is improved by implanting at least one type of ion selected from Rh, Pd, Os, LR, and Pt. 2. In the magnetic head according to claim 1, the ions include Cr, Ti, Zr, Nb, B, Ru,
A magnetic head characterized by being at least one selected from Rh, Pd, Os, Ir, Pt, O and N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7276182A JPS58189816A (en) | 1982-04-30 | 1982-04-30 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7276182A JPS58189816A (en) | 1982-04-30 | 1982-04-30 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58189816A JPS58189816A (en) | 1983-11-05 |
| JPH0423326B2 true JPH0423326B2 (en) | 1992-04-22 |
Family
ID=13498664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7276182A Granted JPS58189816A (en) | 1982-04-30 | 1982-04-30 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58189816A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60187910A (en) * | 1984-03-06 | 1985-09-25 | Matsushita Electric Ind Co Ltd | Formation of gap for magnetic head of alloy |
| JPH0664695B2 (en) * | 1984-08-27 | 1994-08-22 | 株式会社日立製作所 | Method of manufacturing magnetic head |
| KR940004986B1 (en) * | 1984-08-27 | 1994-06-09 | 가부시기가이샤 히다찌세이사꾸쇼 | Manufacturing method of magnetic substance and magnetic head using it |
| JPS61239414A (en) * | 1985-04-17 | 1986-10-24 | Canon Electronics Inc | Magnetic head |
| US4894742A (en) * | 1985-10-07 | 1990-01-16 | Nippon Mining Company, Limited | Thin-film laminated magnetic heads of Fe-Si-Al alloy |
| JP2605681B2 (en) * | 1985-10-14 | 1997-04-30 | ソニー株式会社 | Thin film magnetic head |
| JPS62202350A (en) * | 1986-02-28 | 1987-09-07 | Hitachi Ltd | Sliding contact member for magnetic tape |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49123316A (en) * | 1973-03-30 | 1974-11-26 | ||
| JPS50156917A (en) * | 1974-06-07 | 1975-12-18 | ||
| JPS5512652A (en) * | 1978-07-12 | 1980-01-29 | Masami Fujii | Method of grounding with long wire grounding electrode |
| JPS5658126A (en) * | 1979-10-18 | 1981-05-21 | Matsushita Electric Ind Co Ltd | Manufacture of magnetic head |
-
1982
- 1982-04-30 JP JP7276182A patent/JPS58189816A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49123316A (en) * | 1973-03-30 | 1974-11-26 | ||
| JPS50156917A (en) * | 1974-06-07 | 1975-12-18 | ||
| JPS5512652A (en) * | 1978-07-12 | 1980-01-29 | Masami Fujii | Method of grounding with long wire grounding electrode |
| JPS5658126A (en) * | 1979-10-18 | 1981-05-21 | Matsushita Electric Ind Co Ltd | Manufacture of magnetic head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58189816A (en) | 1983-11-05 |
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