JPS60262977A - Method for providing corrosion resistance to amorphous iron alloy - Google Patents
Method for providing corrosion resistance to amorphous iron alloyInfo
- Publication number
- JPS60262977A JPS60262977A JP11889384A JP11889384A JPS60262977A JP S60262977 A JPS60262977 A JP S60262977A JP 11889384 A JP11889384 A JP 11889384A JP 11889384 A JP11889384 A JP 11889384A JP S60262977 A JPS60262977 A JP S60262977A
- Authority
- JP
- Japan
- Prior art keywords
- corrosion resistance
- iron
- iron alloy
- based amorphous
- amorphous iron
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は鉄系非晶質合金の耐食化方法に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for imparting corrosion resistance to iron-based amorphous alloys.
（従来の技術）
鉄系非晶質合金は、例えば、磁気特性がすぐれているた
め、モーターやトランス等の電気機器における心材とし
ての利用が研究されているが、反面、耐食性に劣る問題
があり、例えば、水中に数時間浸漬するのみで発錆する
。(Prior art) Iron-based amorphous alloys, for example, have excellent magnetic properties and are being studied for use as core materials in electrical equipment such as motors and transformers. However, on the other hand, they have the problem of poor corrosion resistance. For example, rust will develop after being immersed in water for just a few hours.
このような鉄系非晶質合金の耐食性を改善する１めに、
例えば、合金にクロムを添加する方法が従来より知られ
ているが（奈賀正明ら、日本金属学会誌、第３８巻第８
３５頁（１９７４））、このような方法によれば、本来
、鉄系非晶質合金がもつすぐれた磁気特性が低下する場
合がある。In order to improve the corrosion resistance of such iron-based amorphous alloys,
For example, a method of adding chromium to alloys has been known (Masaaki Naga et al., Journal of the Japan Institute of Metals, Vol. 38, No. 8).
35 (1974)), such a method may deteriorate the originally excellent magnetic properties of the iron-based amorphous alloy.
（発明が解決しようとする問題点）
本発明は上記した問題を解決するためになされたもので
あって、簡単な表面処理によって鉄系非晶質合金の耐食
化を達成すると共に、併せてその絶縁性を高めることが
できる鉄系非晶質合金の耐食化方法を提供することを目
的とする。(Problems to be Solved by the Invention) The present invention has been made to solve the above-mentioned problems, and it achieves corrosion resistance of iron-based amorphous alloys by simple surface treatment, and also The purpose of the present invention is to provide a method for improving the corrosion resistance of an iron-based amorphous alloy that can improve insulation properties.
（発明の概略）
本発明による鉄系非晶質合金の耐食化方法は、鉄を主成
分とする鉄系非晶質合金を６価クロム化合物の水溶液で
表面処理することを特徴とする。(Summary of the Invention) The method for imparting corrosion resistance to an iron-based amorphous alloy according to the present invention is characterized in that an iron-based amorphous alloy whose main component is iron is surface-treated with an aqueous solution of a hexavalent chromium compound.
（問題点を解決するための手段及び作用）本発明の方法
において、鉄系非晶質合金は、特に制限されないが、好
ましい例として、Ｆｅ−５ｉ−Ｂ系及びＦｅ−Ｐ−Ｂ系
を挙げることができ、かかる合金は、通常、一般式
Ｆｅ、１Ｍ、 （ｓｉ＋ Ｂ） ｇ
（式中、ＭはＦｅ以外の金属原子を示し、ｘ、ｙ及び２
はそれぞれ４０≦Ｘ≦８５．０≦ｙ≦４０及び１０≦２
≦３０の範囲の数を示す。）で表され、その具体例とし
て、例えば、Ｆｅ１ｙｖＢ＋６Ｓｉ５． Ｆｅｓ＋Ｂ＋
ｓ、ｓＳｉ＋ｓ、５ＣｔＸＦｅ＊ｔＣＯ＋Ｊ＋ｎ５ｉｓ
ＦｅｎＪｉｚＪＯＪ＋イＮｒａＪｅａｏＢｚｏ、Ｐｅｇ
、１３．５５１ｇ、Ｆｅ１ｓｏＰ＋４ＣＪ、 Ｆｅｔｓ
ＭｏＪｚｏ、Ｆｅ５ＪｓＣｉ、ＦｅｗＪｚｅ等を挙げる
ことができる。(Means and effects for solving the problems) In the method of the present invention, the iron-based amorphous alloy is not particularly limited, but preferable examples include Fe-5i-B system and Fe-P-B system. Such alloys usually have the general formula Fe, 1M, (si+B)g, where M represents a metal atom other than Fe, and x, y and 2
are 40≦X≦85.0≦y≦40 and 10≦2, respectively.
Indicates a number in the range ≦30. ), and as a specific example, for example, Fe1yvB+6Si5. Fes+B+
s, sSi+s, 5CtXFe*tCO+J+n5is
FenJizJOJ+LeeNraJeaoBzo, Peg
, 13.551g, Fe1soP+4CJ, Fets
Examples include MoJzo, Fe5JsCi, FewJze, and the like.
本発明の方法において、６価りロム′ヒ合物としては、
特に酸化クロム（Ｖｌ）が好ましく用いられる。鉄系非
晶質合金を酸化クロム（Ｖｌ）水溶液にて表面処理する
には、通常、合金をこの水溶液に浸漬することにより行
ない、ここに水溶液の濃度は５重量％以上、特に１０〜
８０重量％、温度は５０℃又はそれ以上が好ましい。浸
漬時間は、通常１０分以上、好ましくは２０分以上であ
る。In the method of the present invention, the hexavalent ROM'H compound is
In particular, chromium oxide (Vl) is preferably used. Surface treatment of an iron-based amorphous alloy with an aqueous solution of chromium oxide (Vl) is usually carried out by immersing the alloy in this aqueous solution, where the concentration of the aqueous solution is 5% by weight or more, particularly 10% to 10% by weight.
80% by weight, preferably at a temperature of 50°C or higher. The immersion time is usually 10 minutes or more, preferably 20 minutes or more.
（発明の効果）
本発明の方法によれば、以上のように、鉄系非晶質合金
を６価クロム化合物の水溶液に浸漬して表面処理するこ
とによって、合金が本来有する性質を損なうことなく、
合金の耐食性を著しく改善することができ、更に、例え
ば、合金を変圧器の心材に用いる場合に要求される絶縁
性をも著しく高めることができる。(Effects of the Invention) According to the method of the present invention, as described above, by immersing an iron-based amorphous alloy in an aqueous solution of a hexavalent chromium compound to perform surface treatment, the properties inherent to the alloy are not impaired. ,
The corrosion resistance of the alloy can be significantly improved, and the insulation properties required when the alloy is used, for example, in the core material of a transformer, can also be significantly increased.
（実施例） 以下に本発明の実施例を挙げる。(Example) Examples of the present invention are listed below.
実施例
ＦｅｔＪ＋ｈＳ１５で表わされる組成を有する非晶質合
金の薄片を表に示す濃度の酸化クロム（Ｖｌ）水溶液に
５０℃の温度で所定時間浸漬し、乾燥させた後、その耐
食性及び絶縁性を評価した。結果を表に示す。Example A thin piece of an amorphous alloy having the composition represented by FetJ+hS15 was immersed in a chromium oxide (Vl) aqueous solution with the concentration shown in the table for a predetermined time at a temperature of 50°C, and after drying, its corrosion resistance and insulation properties were evaluated. did. The results are shown in the table.
尚、耐食性については、非晶質合金の薄片を蒸留水に浸
漬し、鯖の発生の有無を目視で判定し、錆が全くないと
きを○、少しでも錆があるときを×で示す、また、絶縁
性については、非晶質合金の薄片を重ね、層間抵抗を４
端子法で測定し、薄片１枚に相当する抵抗値を表示した
。Regarding corrosion resistance, a thin piece of amorphous alloy is immersed in distilled water and the presence or absence of mackerel formation is visually determined. When there is no rust, it is marked as ○, and when there is even a little rust, it is marked as ×. , for insulation, stack thin pieces of amorphous alloy and increase the interlayer resistance to 4.
It was measured by the terminal method, and the resistance value corresponding to one thin piece was displayed.
Claims (2)
化合物の水溶液で表面処理することを特徴とする鉄系非
晶質合金の耐食化方法。(1) A method for imparting corrosion resistance to an iron-based amorphous alloy, which comprises surface-treating an iron-based amorphous alloy whose main component is iron with an aqueous solution of a hexavalent chromium compound.
とを特徴とする特許請求の範囲第１項記載の鉄系非晶質
合金の耐食化方法。(2) A method for imparting corrosion resistance to an iron-based amorphous alloy according to claim 1, wherein the hexavalent chromium compound is chromium (VI) oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11889384A JPS60262977A (en) | 1984-06-08 | 1984-06-08 | Method for providing corrosion resistance to amorphous iron alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11889384A JPS60262977A (en) | 1984-06-08 | 1984-06-08 | Method for providing corrosion resistance to amorphous iron alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60262977A true JPS60262977A (en) | 1985-12-26 |
Family
ID=14747759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11889384A Pending JPS60262977A (en) | 1984-06-08 | 1984-06-08 | Method for providing corrosion resistance to amorphous iron alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60262977A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58197803A (en) * | 1982-05-14 | 1983-11-17 | Yaskawa Electric Mfg Co Ltd | Forming method for inter-layer insulating film made of amorphous magnetic material |
| JPS5925998A (en) * | 1982-07-22 | 1984-02-10 | Nippon Steel Corp | Magnetic amorphous alloy material having superior insulating property and corrosion resistance |
| JPS59211579A (en) * | 1983-05-14 | 1984-11-30 | Nippon Steel Corp | Surface treatment of amorphous alloy |
-
1984
- 1984-06-08 JP JP11889384A patent/JPS60262977A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58197803A (en) * | 1982-05-14 | 1983-11-17 | Yaskawa Electric Mfg Co Ltd | Forming method for inter-layer insulating film made of amorphous magnetic material |
| JPS5925998A (en) * | 1982-07-22 | 1984-02-10 | Nippon Steel Corp | Magnetic amorphous alloy material having superior insulating property and corrosion resistance |
| JPS59211579A (en) * | 1983-05-14 | 1984-11-30 | Nippon Steel Corp | Surface treatment of amorphous alloy |
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