JPS6134200A - Surface treatment of magnesium and its alloy - Google Patents
Surface treatment of magnesium and its alloyInfo
- Publication number
- JPS6134200A JPS6134200A JP15406984A JP15406984A JPS6134200A JP S6134200 A JPS6134200 A JP S6134200A JP 15406984 A JP15406984 A JP 15406984A JP 15406984 A JP15406984 A JP 15406984A JP S6134200 A JPS6134200 A JP S6134200A
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- magnesium
- alloy
- oxides
- surface treatment
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Abstract
Description
【発明の詳細な説明】
産業上の利用分野
不発明はマグネシウム及びその合金の表面処理法、さら
に詳しくいえば１％定のアルカリ性浴を用いて陽極酸化
処理を施すことにより、該表面に硬質でかつ耐食性に優
れた白色皮膜を形成させる方法に関するものであろう
一般に、マダイ・シウムやその合金は実用金属の中で（
ｌよ比重が小さく、かつ比強度が鋼やアルミニウム合金
などに比べて大きく、その上吸音特性も優ＪＬでいるこ
とから、工業材料用の重要な金属として１例えば自動車
部品、レジャー用品、音響部品さらには宇’ＦＭ機器部
品などの分野で実用に供されており、その需要は今後さ
らに拡大する傾向に、ちる。[Detailed Description of the Invention] The invention relates to a surface treatment method for magnesium and its alloys, and more specifically, a method for surface treatment of magnesium and alloys thereof. In general, red sea bream sium and its alloys are among the practical metals (
It is an important metal for industrial materials, such as automobile parts, leisure goods, and acoustic parts, because it has a small specific gravity and a high specific strength compared to steel and aluminum alloys, and also has excellent sound absorption properties. Furthermore, it is being put to practical use in fields such as U'FM equipment parts, and the demand for it is likely to increase further in the future.
従来の技術
ところで、マグネ／ラムは周知のように化学的に・はア
ルミニウムよりもさらに大気中で不安定でマグネ７ウム
やその合金はアルミニウムなどに比べて腐食される傾向
があり、実用上これを防止する必要があるため−これま
で種）？の表面処理法が提案さ几ている。例えばクロム
酸塩、マンガン塩、フッ化物などの単体又はこれらを組
み合わせた浴中で化成処理を行う方法、浴中で鋼やステ
ンレス鋼などによるガルバニック法で表面処理を行う方
法、アルミニウムなどの表面処理ＶＣ卦いて実用ＩＣ供
されている陽極酸化を施す方法などが提案されている。BACKGROUND OF THE INVENTION As is well known, Magne/Rum is chemically more unstable than aluminum in the atmosphere, and Magne-7 and its alloys tend to corrode more than aluminum. Because there is a need to prevent - ever species)? Several surface treatment methods have been proposed. For example, a method of chemical conversion treatment in a bath containing chromate, manganese salt, fluoride, etc. alone or a combination of these, a method of surface treatment using a galvanic method using steel or stainless steel in a bath, a method of surface treatment of aluminum, etc. A method of applying anodic oxidation, which is used in VC and practical ICs, has been proposed.
しかしながら、前記のクロム酸塩などによる化成処理法
については、短期間の仮防食には有効であるとしても、
長期間にわたる防食効果は期待できず、しかも処理浴が
有害であるために、公害貼止の諸設備を必要とし経済的
にも不オリである。またガルバニック法については、得
られた表面皮膜が化学的に不安定な低級酸化物であるた
めに、そのもののみでは耐食性Ｑよ期待できず塗装など
の処理を併用する必要があるがこのようにしても、長期
間にわたる使用に際してブリスター（ふくれ）が発生す
るなどの欠点がある。さらに比較的安定な酸化物から成
る表面皮膜が得られる陽極酸化法については、処理面の
粗化が著しく、シかも形成される塩のみによっては一様
な色調が得にくいなどの欠点を有するため、実際には塗
装用の下地処理に用いられているにすきない。However, although the chemical conversion treatment using chromate, etc., is effective for short-term temporary corrosion protection,
A long-term anticorrosive effect cannot be expected, and since the treatment bath is toxic, various equipment for pollution-prone pasting is required, which is economically unsuitable. In addition, regarding the galvanic method, since the surface film obtained is a chemically unstable lower grade oxide, it cannot be expected to have better corrosion resistance by itself, and treatment such as painting must also be used. However, they also have drawbacks such as blistering when used for a long period of time. Furthermore, the anodic oxidation method, which produces a surface film made of relatively stable oxides, has drawbacks such as the roughening of the treated surface and the difficulty in obtaining a uniform color tone due to the salts that are formed. In reality, it is used as a base preparation for painting.
このように、従来のマグネシウムやその合金の表面処理
法は、その効果について必ずしも満足しｐるものではな
く、優れた表面処理法の開発が要望されていた。As described above, the effects of conventional surface treatment methods for magnesium and its alloys are not necessarily satisfactory, and there has been a demand for the development of superior surface treatment methods.
発明が解決しようとする問題点
不発明者らは、このような要望にこたえ、マグネシウム
やその合金の表面に、一様な白色を有し、硬質でかつ耐
食性に優れたち密な被覆を効率よく施す方法を開発する
ために種々研究を行ってきた。Problems to be Solved by the Invention In response to these demands, the inventors have developed a method to efficiently coat the surface of magnesium and its alloys with a uniform white color, hardness, and excellent corrosion resistance. Various studies have been conducted to develop methods for applying this method.
しかしながら、アルミニウムの場合は金属アルミニウム
に対するアルミニウム酸化物の容積比が１．２８と大き
いため、陽極酸化によりアルミニウム素地の表面にち密
な被覆を形成させることは容易であるのに対し、マグネ
シウムの場合は金属マグネシウムに対するマグネシウム
酸化物の容積比が０．８１と小さいため、陽極酸化によ
って生じる酸化物皮膜でマグネシウム素地の表面を完全
に被覆することができず、ち密な被覆を形成することは
困稚である。However, in the case of aluminum, the volume ratio of aluminum oxide to metal aluminum is as large as 1.28, so it is easy to form a dense coating on the surface of the aluminum substrate by anodizing, whereas in the case of magnesium, Because the volume ratio of magnesium oxide to magnesium metal is as small as 0.81, the surface of the magnesium substrate cannot be completely covered with the oxide film produced by anodic oxidation, making it difficult to form a dense coating. be.
したがって、本発明の目的は、陽極酸化によりマグネ／
ラム又（・すその合金の表面に保護皮膜を形成させるに
当シ９表面全体にわたってち密な、硬質で耐食性の良好
な白色皮膜を設けるための新規な表面処理法を提供する
ことである。Therefore, it is an object of the present invention to
To provide a new surface treatment method for forming a protective film on the surface of a ram or hem alloy.The present invention provides a new surface treatment method for providing a dense, hard, and corrosion-resistant white film over the entire surface.
問題点を解決するための手段
本発明者らは、アルカリ浴で安定な゛アルミン酸塩を用
いて陽極酸化を行い、マグネ／ラム及びその合金の表面
に形成される皮膜の特性について研究を重ねた結果、電
流−電圧曲線における過不働領賊で、火花放電を伴って
皮膜が形成されること。Means for Solving the Problems The present inventors performed anodization using aluminate, which is stable in an alkaline bath, and conducted repeated research on the characteristics of the film formed on the surface of Magne/Lam and its alloys. As a result, a film is formed with spark discharge due to excessive deactivation in the current-voltage curve.
この領域で得られた皮膜は、Ｘ線回折によると、ＭｇＡ
ｔ２０４とＭｇＯとの混合体、すなわちスピネル構造を
有する化合物と酸１１Ｚマグネンウムとから構成されて
おり、、ＨＶ７５０を有する硬質なものであること、し
かしながら、この皮膜はその色調が白色状であるものの
１表面の粗化が著］７く、５係塩化ナトｌ）ラム水溶奴
による塩水噴霧試１験では短時間で白色の発錆が１認め
られること、したがって。According to X-ray diffraction, the film obtained in this region is MgA
It is composed of a mixture of T204 and MgO, that is, a compound with a spinel structure, and 11Z magnesium acid, and is hard with an HV of 750.However, although this film is white in color, it is 7) Sodium chloride 5) White rust was observed in a short period of time in a salt spray test using a rum water melt.
アルミン酸塩の他に、酸化物で白色を呈する周期表第［
ｂ族や第■ｂ族の両性金属の酸化物、水酸化物又は塩を
砲加したアルカリ性浴を用いて陽極酸化処理を行い、こ
れらの酸化物を皮膜表面に屯気化学的に複合被覆させＩ
ｌ、げ、素地表面がち密になって皮膜の粗度やＩｎｒｔ
食性が著しく改善されることを見出し、この知見＆’Ｃ
基ついて本発明をなすに至った。In addition to aluminates, white oxides are found in the periodic table [[
Anodizing is performed using an alkaline bath containing oxides, hydroxides, or salts of amphoteric metals of group B or group IIb, and these oxides are chemically composite coated on the surface of the film. I
l, burrs, the substrate surface becomes dense and the roughness of the film and Inrt
We found that eating habits were significantly improved, and this finding &'C
Based on these findings, the present invention has been completed.
すなわち、不発明に従えば、陽陰酸化によりマグネシウ
ム又（はその合金の表面に１ｌＩｌｔ食性皮膜を形成さ
せるに当り一周期表第ＩＩｂ族及び第■ｂ族に属する両
性金属の酸化物、水酸化物叉び塩の中から選ばれた少な
くとも１種の１ｂ合物とアルミン酸塩とを含有するアル
カリ性浴中で陽極酸化処理を行うことにより、ち密な耐
食性硬質白色皮膜を形成させることができる。That is, according to the invention, in order to form an edible film on the surface of magnesium or its alloy by positive and negative oxidation, oxides and hydroxides of amphoteric metals belonging to Group IIb and Group IIb of the periodic table are used. By carrying out the anodizing treatment in an alkaline bath containing at least one 1b compound selected from metal salts and an aluminate, a dense, corrosion-resistant, hard white film can be formed.
本発明において用いるアルカリ性浴は、アルミン酸塩と
周期表７゛菖ＩＩ ｂ族及び第１Ｖｂ族に属する両性金
属の酸化物−水酸化物又は塩の中から選ばれた少なくと
も１種とを含有することが必要であり、ｐＨは１１．５
以上が望ましい。このようなアルカリ性浴は、例えば水
酸化ナトリウムや水酸化カリウムなどのアルカリ金属水
酸化物を含有する濃度２Ｎ以上の水溶液Ｖこ、水酸化ア
ルミニウム若しくは単体アルミニウムを溶解させるか、
又はＮ ａ ＡＩＯ２やＫＡｌＯ２などのアルミン酸塩
適壇を水に溶解させ、次いで水酸化ナトリウムや水酸イ
コカリウムを用いてｐＨを１１．５以上１に調整したの
ち、周期表第１１ｂ族及びｌ’／ ｂ族の両１／ｌ金属
の酸化物、水酸化物又は塩の中から選（・、【れた少な
くとも１．陳を添加することによって調製される。The alkaline bath used in the present invention contains an aluminate salt and at least one selected from oxide-hydroxides or salts of amphoteric metals belonging to group 7, group IIb and group 1Vb of the periodic table. It is necessary that the pH is 11.5.
The above is desirable. Such an alkaline bath is, for example, an aqueous solution containing an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide with a concentration of 2N or higher, or an aqueous solution in which aluminum hydroxide or elemental aluminum is dissolved;
Alternatively, dissolve an aluminate salt such as Na AIO2 or KAlO2 in water, and then adjust the pH to 11.5 or more using sodium hydroxide or icopotassium hydroxide, and then dissolve it in Group 11b and l' of the periodic table. / selected from oxides, hydroxides or salts of both 1/l metals of group b.
前記の周期１モ第１Ｉｂ族及び■ｂ族に属する両性金属
の酸化物、水酸化物、塩としては、例えは１■鉛及びス
ズの酸化物や水酸化物、亜鉛酸すトリウム、亜鉛酸カリ
ウム、スズ酸ツートリウム、スズ酸カリウムなどが挙げ
られるっこれらの化合物（−支それぞれ単独で用いても
よいし、２種り、上咀み合わせて用いてもよい。また、
前記両性金属１じ合物の他に、鉛化合物も有効であるが
、とのものは若干黄味状の白色皮膜を与える。Examples of the oxides, hydroxides, and salts of amphoteric metals belonging to Group 1 Ib and Group IIb of the above-mentioned Period 1Mo include oxides and hydroxides of lead and tin, thorium zincate, and zincate. These compounds include potassium, stannate, potassium stannate, etc. These compounds may be used alone, or two types may be used in combination.
In addition to the amphoteric metal compounds mentioned above, lead compounds are also effective, but these give a slightly yellowish white film.
本発明で用いるアルカリ性浴におけるアルミン酸塩の含
有量は５〜５０ ｔ／ｌ、両性金属化合物の含有量は１
〜２０９／ｌの範囲であることが望ましく、両性金属化
合物／アルミン酸塩重量比は０、０５〜０．３の範＋Ｊ
月であることが好ましい。The content of aluminate in the alkaline bath used in the present invention is 5 to 50 t/l, and the content of amphoteric metal compound is 1
It is desirable that the amphoteric metal compound/aluminate weight ratio is in the range of 0.05 to 0.3+J
Preferably the moon.
また、該アルカリ性浴には、前記のアルミン酸塩及び両
性く凱寓Ｉｔｓ合物の他に、電導性を改善するために、
アルカリ金属のフッ化物２ リン酸塩及び炭酸塩を添加
してもよいし、また陽極酸化処理（・でおける酸化反応
を促進させるために、過７ノガン酸カリウムなどの酸性
酸化物を添加してもよい。In addition to the above-mentioned aluminate and amphoteric compounds, the alkaline bath also contains, in order to improve conductivity,
Alkali metal fluoride 2 Phosphates and carbonates may be added, and acidic oxides such as potassium per7anoganate may be added to accelerate the oxidation reaction in anodizing treatment (. Good too.
不発明における１）す（夕波化処理法（ｔζついて（は
、例えば、電源として直流を用いる場合、マグネシウム
又はその合金をｌｉ （＋とじ、ステンレス鋼板や鉛イ
、ソを陰・極とし、前記アルカリ性浴を用いて、浴温−
１０−８０℃、電流密度０．１〜２０ Ａ／ ｄｒｎ”
の範囲で電解することにより、陽極酸化処理を行う。1) For example, when direct current is used as a power source, magnesium or an alloy thereof is used as a cathode and a stainless steel plate, lead, etc. are used as cathodes and Using an alkaline bath, the bath temperature -
10-80℃, current density 0.1-20 A/drn”
Anodic oxidation treatment is performed by electrolyzing within the range of .
また交流を用いる場合、対極にマグネシウム又はその合
金を用い、前記と同様に処理する。When alternating current is used, magnesium or an alloy thereof is used as the counter electrode, and the same treatment as above is performed.
このような陽極酸化処理により、マグネシウム又はその
合金の表向に、厚さ０．５〜５０μｍ程度のち密な白色
皮膜が形成される。By such anodic oxidation treatment, a dense white film with a thickness of about 0.5 to 50 μm is formed on the surface of magnesium or its alloy.
発明の効果
本発明のマグネシウム及びその合金の表面処理法による
と、それらの表面に一様な白色を有し。Effects of the Invention According to the surface treatment method for magnesium and its alloys of the present invention, the surfaces thereof have a uniform white color.
硬質でかつ劇食件シて優れたち密な皮膜が形成され、不
発明の表面処理法は実用的励ｊ直の高い優れた方法であ
る。A hard and dense film with excellent corrosion resistance is formed, and the uninvented surface treatment method is an excellent method with high practical flexibility.
実施例
次に実施例によって不発明をさらに詳ａｌ （Ｃ１悦明
する。EXAMPLES Next, the non-invention will be explained in further detail through examples.
実施例１
純マグネ／ウムＭＦ材を陽極とし、ステンレス鋼板（Ｓ
Ｏ８３０４）を陰極として、ＫＯＨ１５０？ ／ ｔ、
Ａｔ（ＯＨ）３３５ ’ｉ／ｌ、 ＫＦ ３５９／を及
びＺｎ０５ ？／ｌから成るアルカリ性浴を用い、浴温
」０℃。Example 1 A pure Mg/M MF material was used as an anode, and a stainless steel plate (S
O8304) as the cathode, KOH150? /t,
At(OH)335'i/l, KF359/ and Zn05? An alkaline bath consisting of 1/l was used, and the bath temperature was 0°C.
直流′亀流密度帆５ Ａ ／ ｄｍ’の電解条件で３０
分間陽極酸化処理を行った。その結果、純マグネ／ウム
ＭＩ材の表面に、厚さ約１２μｍｎ のち密な白色皮膜
が形成された。30 under electrolytic conditions of DC'torque current density sail 5 A/dm'
Anodization treatment was performed for a minute. As a result, a dense white film with a thickness of about 12 μm was formed on the surface of the pure Mg/M material.
また、対極に純マグネンウムＭＩ材を２枚用い、交流を
用いて電流密度をＩＡ／ｄ、イ とする以外は、前記と
同様の条件で３０分間陽極酸化処理を施し介ところ一厘
式１８μｍのも密１７白角店Ｈ葭づで竪庵うれ／こ。In addition, two sheets of pure magnesium MI material were used as the counter electrode, and anodization treatment was performed for 30 minutes under the same conditions as above, except that the current density was set to IA/d, A using alternating current. Momi 17 Shirakakuten H Yoshizude Takuan Ure/ko.
実施例２
実ＩＮ例目てｋける純マグネ／ウムＭ Ｉ利の代りに、
マグイ・シウム合金ＡＺ３１及びＡＺ ９１材をそれぞ
れ用いる以外は、実施例１と同様（てして陽極酸１じ処
理を施（７たところ、直流、交流いずれにおいてもち密
な白色皮膜が形成された。Embodiment 2 Actual IN example Instead of pure magnetism/magnetic acid,
Same as Example 1 except that Magui-Sium alloy AZ31 and AZ91 materials were used (and then subjected to one step of anodic acid treatment). As a result, a dense white film was formed in both direct current and alternating current. .
実施例３
実施例Ｊ、 ｉ′ｔＣおけるアルカリ性浴のＺｎＯの代
υに。Example 3 Example J, i′tC for ZnO in alkaline bath υ.
Ｎ ａ、 ２ Ｚ ｎ Ｏ２及びに２Ｚｎ０２ をそ
れぞれ用いる以外は実施例Ｊと同様にして陽極酸化処理
を施したところ、直流、交流いずすしにおいてもち密な
白色皮膜が形成された。When anodizing was carried out in the same manner as in Example J except that Na, 2ZnO2 and 2Zn02 were used, a dense white film was formed in both direct current and alternating current conditions.
実施例４
実施例１における浴温度を一１Ｏ〜５０Ｃに変化させる
以外は、実施例１と同様にして陽極酸化処理を施したと
ころ、直流、交流いずれにおいてもち密な白色皮膜が形
成された。Example 4 Anodizing treatment was performed in the same manner as in Example 1 except that the bath temperature in Example 1 was changed from -10C to 50C, and a dense white film was formed in both direct current and alternating current.
次表に、直流の場合における浴温度と白色度との関係を
示す。The following table shows the relationship between bath temperature and whiteness in the case of direct current.
なお、白色度ｊｔｉ］ｖ１ｇＯを１００とした場合の１
直である。In addition, 1 when whiteness jti]v1gO is 100
It is direct.
実施例５
電解浴組成をＫＯＨ１５０？ ／ Ｌ 、 Ｋ２Ｓｎ０
５１０ ｔ／ １． ＡｔＮａ０２ ４０ ？／ ｔ
−ＫＦ ２０ ？／ｌ とし。Example 5 Electrolyte bath composition KOH150? / L, K2Sn0
510t/1. AtNa02 40? /t
-KF 20? /l Toshi.
マグネンウムＭ工材及びマグネンウム合金Ａｚ３１、Ａ
Ｚ９１材をそれぞ／’Ｌ用い、浴温３０℃、電流密度２
Ａ ／ ｄ＋ｆとし、直流の場合は対極に鉛板を用い
、交流の場合は対極に試料を２枚用い、それぞれ２０分
間電解を施したところ、いずれの場合もち密な白色皮膜
が形成された。Magnenium M material and Magnenium alloy Az31, A
Using Z91 material /'L, bath temperature 30℃, current density 2
A/d+f, a lead plate was used as the counter electrode in the case of direct current, and two samples were used as the counter electrode in the case of alternating current, and electrolysis was performed for 20 minutes each, and a dense white film was formed in both cases.
また、前記のアルカリ性浴を用いて、放電を伴う浴電圧
と電流密度との関係を調べたところ、４０Ｖから放電が
認められ、このときの′電流密度は０．５Ａ／山２で一
定となった。In addition, when we investigated the relationship between bath voltage and current density accompanied by discharge using the above-mentioned alkaline bath, we found that discharge occurred from 40V, and the current density at this time was constant at 0.5A/peak 2. Ta.
さらに′心厚を上昇させたところ、電流密度も上昇し、
ＳＯＶのとき５Ａ／ｄｍ’ でほぼ一定となった。浴
電圧を上昇させることにより、電流が増加し、それに伴
って浴温度も上昇するが、電流密一度の小さい０．５〜
１．ＯＡ／ｄｍでは浴温度はほとんど上昇せず、２ Ａ
／ ｄｍ”以上では浴温１ｌ−ｊ若干上昇した。Furthermore, when the core thickness was increased, the current density also increased,
At SOV, it was almost constant at 5A/dm'. By increasing the bath voltage, the current increases and the bath temperature increases accordingly, but at a current density of 0.5 to 1, the current density increases.
1. At OA/dm, the bath temperature hardly increases, and at 2 A
/ dm" or more, the bath temperature rose slightly by 1 l-j.
実姉例６
実施例５におけるに２Ｓｎ０３及びＡｔＮａ０２の代り
に、それぞれ５ｎ０２及びＡｔＫＯ２を用いる以外は、
実施例５と同様にして陽極酸化処理を行ったところ、ち
密な白色皮膜が形成されたう
実施例７
実施例５におけるに２Ｓｎ０３１０ ｆ’ ／ ｔの代
りに、４５％ホウフッ化鉛５ ｃｃ ／ ７を用い、実
施例５と同様にして陽極酸１こ処理を施したところ、形
成された皮膜の色調は実施例５のものと同様であったが
、４５％ホウノソ化鉛７ＣＣ／を以上を用いた場合、形
成された皮膜は若干黄味を帯びていた。しかし耐食性や
皮膜の硬度は実施例５のものと同様であった。Actual sister example 6 Except for using 5n02 and AtKO2 instead of 2Sn03 and AtNa02 in Example 5,
When anodizing was carried out in the same manner as in Example 5, a dense white film was formed. When 1 coat of anodic acid was applied in the same manner as in Example 5, the color tone of the formed film was similar to that in Example 5, but when 45% lead borouside was used with 7 CC/ or more, The film formed was slightly yellowish. However, the corrosion resistance and hardness of the film were similar to those of Example 5.
実施例８
実施例５におけるアルカリ性浴に、陽極酸化処理におけ
る酸化反応を促進するためにＫＭｎＯ４を添加１−１実
施例５と同様にして陽極酸化処理を施したところ、ＫＭ
ｎＯ４の添加量が５２／ｌまで（は白色皮膜が形成され
たが、７２／を以上添加すると一部褐色を呈する皮膜が
形成された。Example 8 KMnO4 was added to the alkaline bath in Example 5 to promote the oxidation reaction in the anodizing treatment. 1-1 When anodizing treatment was performed in the same manner as in Example 5, KM
When the amount of nO4 added was up to 52/l, a white film was formed, but when more than 72/l was added, a partially brown film was formed.
特許用１願人 高 谷 松 文（ほか１名）1 applicant for patent: Fumi Takaya Matsu (and 1 other person)
Claims (1)
耐食性皮膜を形成させるに当り、周期表第IIｂ族及び第
IVｂ族に属する両性金属の酸化物、水酸化物及び塩の中
から選ばれた少なくとも１種の化合物とアルミン酸塩と
を含有するアルカリ性浴中で陽極酸化処理を行うことを
特徴とする表面処理法。1. When forming a corrosion-resistant film on the surface of magnesium or its alloy by anodic oxidation,
Surface treatment characterized by carrying out anodization treatment in an alkaline bath containing at least one compound selected from oxides, hydroxides and salts of amphoteric metals belonging to group IVb and an aluminate. Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15406984A JPS6134200A (en) | 1984-07-26 | 1984-07-26 | Surface treatment of magnesium and its alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15406984A JPS6134200A (en) | 1984-07-26 | 1984-07-26 | Surface treatment of magnesium and its alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6134200A true JPS6134200A (en) | 1986-02-18 |
| JPS6253597B2 JPS6253597B2 (en) | 1987-11-11 |
Family
ID=15576209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15406984A Granted JPS6134200A (en) | 1984-07-26 | 1984-07-26 | Surface treatment of magnesium and its alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6134200A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999042641A1 (en) * | 1998-02-23 | 1999-08-26 | Mitsui Mining And Smelting Co., Ltd. | Corrosion-resistant, magnesium-based product exhibiting luster of base metal and method for producing the same |
| JP2005103504A (en) * | 2003-10-02 | 2005-04-21 | Denka Himaku Kogyo Kk | Magnesium metallic material having photocatalytically active surface and its manufacturing method |
| JP2010147739A (en) * | 2008-12-18 | 2010-07-01 | Kiichi Kosugi | Sound collector for hearing aid |
| JP2012097340A (en) * | 2010-11-04 | 2012-05-24 | Mitsui Mining & Smelting Co Ltd | Magnesium alloy surface treatment method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002371380A (en) * | 2001-06-15 | 2002-12-26 | Fujitsu Ltd | Magnesium material product having corrosion resistance and manufacturing method therefor |
-
1984
- 1984-07-26 JP JP15406984A patent/JPS6134200A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999042641A1 (en) * | 1998-02-23 | 1999-08-26 | Mitsui Mining And Smelting Co., Ltd. | Corrosion-resistant, magnesium-based product exhibiting luster of base metal and method for producing the same |
| US6335099B1 (en) | 1998-02-23 | 2002-01-01 | Mitsui Mining And Smelting Co., Ltd. | Corrosion resistant, magnesium-based product exhibiting luster of base metal and method for producing the same |
| JP2005103504A (en) * | 2003-10-02 | 2005-04-21 | Denka Himaku Kogyo Kk | Magnesium metallic material having photocatalytically active surface and its manufacturing method |
| JP2010147739A (en) * | 2008-12-18 | 2010-07-01 | Kiichi Kosugi | Sound collector for hearing aid |
| JP2012097340A (en) * | 2010-11-04 | 2012-05-24 | Mitsui Mining & Smelting Co Ltd | Magnesium alloy surface treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6253597B2 (en) | 1987-11-11 |
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