JP2000064057A - Surface treatment method of magnesium material or magnesium alloy material - Google Patents
Surface treatment method of magnesium material or magnesium alloy materialInfo
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- JP2000064057A JP2000064057A JP10234810A JP23481098A JP2000064057A JP 2000064057 A JP2000064057 A JP 2000064057A JP 10234810 A JP10234810 A JP 10234810A JP 23481098 A JP23481098 A JP 23481098A JP 2000064057 A JP2000064057 A JP 2000064057A
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- magnesium
- treatment
- magnesium alloy
- alloy material
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Abstract
Description
【０００１】[0001]
【発明の属する分野】本発明はマグネシウム材またはマ
グネシウム合金材の耐食性を高めるためのクロム・フリ
ーの表面処理方法に関し、特に家電製品、電子機器類等
の筐体として使用するマグネシウム材またはマグネシウ
ム合金材の耐食性を高めることができる表面処理方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chromium-free surface treatment method for enhancing the corrosion resistance of a magnesium material or a magnesium alloy material, and in particular, a magnesium material or a magnesium alloy material used as a housing for home electric appliances, electronic devices and the like. The present invention relates to a surface treatment method capable of enhancing the corrosion resistance of
【０００２】[0002]
【従来の技術】マグネシウム材またはマグネシウム合金
材は、軽量、比強度、耐くぼみ性、放熱性等の特性が優
れているため、従来から自動車等の構造材料に使われて
きたが、特に近年ではコンピュータ、音響、ビデオ、携
帯電話等、電子機器類の筐体用素材として注目されてい
る。2. Description of the Related Art Magnesium materials or magnesium alloy materials have been conventionally used as structural materials for automobiles and the like because of their excellent properties such as light weight, specific strength, dent resistance, and heat dissipation. It has attracted attention as a material for housings of electronic devices such as computers, audio, video, and mobile phones.
【０００３】しかし、マグネシウムは実用金属の中では
最も卑な金属であるため、防錆のための表面処理が不可
欠である。マグネシウム合金の防錆処理方法はＪＩＳ
Ｈ８６５１に規定されており、このうち化成処理方法に
より完成部品を防食する方法は「３種」として収録され
ている。しかしこの処理方法は第２工程に重クロム酸ナ
トリウムを使用するものである。However, since magnesium is the base metal among the practical metals, surface treatment for rust prevention is essential. JIS is the anticorrosion treatment method for magnesium alloys
It is specified in H8651, and among these, the method of preventing corrosion of finished parts by the chemical conversion treatment method is recorded as "3 types". However, this treatment method uses sodium dichromate in the second step.
【０００４】また、陽極酸化による表面処理方法は同じ
くＪＩＳ Ｈ８６５１に「５種」、「１１種」および
「１２種」の３方法が収録されているが、このうち「５
種」および「１２種」では標準処理液中に重クロム酸ナ
トリウムが含まれており、また、「１１種」についても
塗装下地に用いるときは重クロム酸ナトリウム含有処理
剤に浸漬することになっている。As for the surface treatment method by anodic oxidation, JIS H8651 also includes three methods of "5 types", "11 types" and "12 types".
In "Type 12" and "12 types", sodium dichromate is contained in the standard treatment liquid, and also in "11 types", when it is used as a coating base, it is immersed in a treatment agent containing sodium dichromate. ing.
【０００５】[0005]
【発明が解決しようとする課題】上記クロム酸塩の有害
性は従来からよく知られており、作業環境、排水等の規
制が行われてきた。また、近年はクロム酸処理された製
品が廃棄物となった場合に、酸性雨によって６価クロム
が溶出して環境汚染を引き起こす問題も発生している。
このため、国内外を問わずクロム酸の使用を自粛する動
きが出ている。The harmfulness of the chromate has been well known, and the working environment and drainage have been regulated. Further, in recent years, when a product treated with chromic acid becomes a waste, there is a problem that hexavalent chromium is eluted by acid rain and causes environmental pollution.
Therefore, there is a tendency to refrain from using chromic acid both in Japan and overseas.
【０００６】したがって本発明の目的は、有害なクロム
酸塩を使用せず、高い耐食性を有するマグネシウム材ま
たはマグネシウム合金材の表面処理方法を提供すること
にある。Therefore, an object of the present invention is to provide a surface treatment method for a magnesium material or a magnesium alloy material having high corrosion resistance without using harmful chromate.
【０００７】[0007]
【課題を解決するための手段】上記の課題を解決するた
め、本発明のマグネシウム材またはマグネシウム合金材
の表面処理方法は、中性溶液またはアルカリ性溶液を処
理液として、化学的方法または電気化学的方法のいずれ
かの方法により酸化皮膜を形成させた後、高圧蒸気雰囲
気中で処理するものである。この高圧蒸気による処理
は、圧力１．５〜１０kgf／cm2の範囲で行うことが好ま
しい。In order to solve the above problems, a surface treatment method for a magnesium material or a magnesium alloy material according to the present invention is a chemical method or an electrochemical method using a neutral solution or an alkaline solution as a treatment solution. After forming an oxide film by any one of the methods, it is treated in a high-pressure steam atmosphere. This treatment with high-pressure steam is preferably carried out at a pressure in the range of 1.5 to 10 kgf / cm 2 .
【０００８】本発明の方法により処理するマグネシウム
材またはマグネシウム合金材として、ダイカスト法また
は射出成形法による成形物、たとえばコンピュータ、音
響、ビデオ、携帯電話等、電子機器類の筐体が挙げられ
る。As the magnesium material or magnesium alloy material to be treated by the method of the present invention, a molded product by a die casting method or an injection molding method, for example, a casing of electronic equipment such as a computer, a sound, a video, a mobile phone, etc.
【０００９】[0009]
【発明の実施の態様】以下、本発明を具体的に説明す
る。表面処理の対象となるマグネシウム材またはマグネ
シウム合金材としては既述のようにコンピュータ、音
響、ビデオ、携帯電話等、電子機器類の筐体が挙げられ
るが、これに限定されるものでなく、その他の成形品と
して家電製品、自動車部品、装飾品、家具、建具等、さ
らに板材、コイル材等の素材類を挙げることができる
（以下、これらを総称して「被処理物」という）。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below. Examples of the magnesium material or magnesium alloy material to be surface-treated include computers, acoustics, video, mobile phones, and other electronic equipment casings, as described above, but are not limited thereto. Examples of the molded article include home electric appliances, automobile parts, ornaments, furniture, fittings, and materials such as plate materials and coil materials (hereinafter, these are collectively referred to as "processing object").
【００１０】上記筐体の成形法は多種あるが、マグネシ
ウム材またはマグネシウム合金材の成形法としてはダイ
キャスト法、あるいは射出成形法（チクソー・モールデ
ィング）が適している。Although there are various molding methods for the above-mentioned housing, a die casting method or an injection molding method (chicksaw molding) is suitable as a molding method for a magnesium material or a magnesium alloy material.
【００１１】次に本発明の処理方法を工程順に説明す
る。これらの工程中、本発明の表面処理方法に係る工程
は必須であるが、その他の工程は被処理物の様子を考慮
して適宜採用すればよい。Next, the processing method of the present invention will be described in the order of steps. Among these steps, the steps relating to the surface treatment method of the present invention are indispensable, but other steps may be appropriately adopted in consideration of the state of the object to be treated.
【００１２】先ず前処理工程として被処理物の脱脂を行
う。この脱脂工程は被処理物表面の油脂、ゴミ、ホコ
リ、指紋等を除去して清浄にし、本発明に係る処理液を
有効に働かせるために大事である。脱脂剤としては有機
溶剤類あるいは炭酸ナトリウム等のアルカリ性脱脂剤等
を用い、５０〜８０℃、好ましくは６５〜７５℃で２〜
１０分浸漬処理し、その後水洗を行う。First, as a pretreatment step, the object to be treated is degreased. This degreasing step is important in order to remove oils and fats, dust, dust, fingerprints, etc. on the surface of the object to be cleaned so that the processing liquid according to the present invention works effectively. As the degreasing agent, an organic solvent or an alkaline degreasing agent such as sodium carbonate is used, and the degreasing agent is 50 to 80 ° C, preferably 65 to 75 ° C
Immersion treatment is performed for 10 minutes, followed by washing with water.
【００１３】脱脂処理に続いてエッチング処理を行う。
このエッチング工程は被処理物表面の酸化皮膜を除去
し、活性面を作るものであるが、処理面はすぐに酸化さ
れてしまうため速やかに次工程に移る必要がある。エッ
チング剤としては水酸化ナトリウム等のアルカリ類、硝
酸等の酸類、塩化第二鉄等の金属塩類を使用し、４５〜
７５℃、好ましくは５５〜６５℃で２〜１０分程度浸漬
処理し、その後水洗を行う。After the degreasing process, an etching process is performed.
This etching process removes the oxide film on the surface of the object to be processed to form an active surface. However, the processed surface is immediately oxidized, so that it is necessary to move immediately to the next step. As the etching agent, alkalis such as sodium hydroxide, acids such as nitric acid, and metal salts such as ferric chloride are used.
Immersion treatment is carried out at 75 ° C., preferably 55 to 65 ° C. for about 2 to 10 minutes, followed by washing with water.
【００１４】続いて表面調整を行う。この工程はエッチ
ングによって活性化された被処理物表面の電位を均一に
し、次工程の薬品による不均一な電位腐食を防止するも
のである。表面調整剤（キザイ（株）社製）に室温で１
〜５分程度浸漬処理し、その後水洗を行う。Subsequently, the surface is adjusted. In this step, the potential of the surface of the object to be processed activated by etching is made uniform, and uneven potential corrosion due to chemicals in the next step is prevented. 1 at room temperature with surface conditioner (Kizai Co., Ltd.)
Immersion treatment is performed for about 5 minutes, and then water washing is performed.
【００１５】次に本発明に係る酸化皮膜を被処理物表面
に形成させる。この酸化皮膜形成の際に被処理物表面に
は微細なポアが形成されるため塗膜の密着性を向上する
ことができる。酸化皮膜は化学的方法または電気化学的
方法によって形成することができる。化学的方法（化成
処理）によって酸化皮膜を形成する場合、使用する処理
液は中性溶液またはアルカリ性溶液である。このうち中
性溶液としては、キザイ（株）社製：ＭＧ−ＣＣＡまた
はＭＧ−ＣＣＢを使用し、アルカリ性溶液としては、キ
ザイ（株）社製：ＭＧ−ＣＣＣを使用する。このときの
処理条件としては４５〜７５℃、好ましくは５５〜６５
℃、ｐＨ６〜９、好ましくは６．５〜８．５で、２〜３
０分、好ましくは５分程度浸漬処理し、その後水洗を行
う。Next, the oxide film according to the present invention is formed on the surface of the object to be treated. Since fine pores are formed on the surface of the object to be treated during the formation of the oxide film, the adhesion of the coating film can be improved. The oxide film can be formed by a chemical method or an electrochemical method. When forming an oxide film by a chemical method (chemical conversion treatment), the treatment liquid used is a neutral solution or an alkaline solution. Among them, MG-CCA or MG-CCB manufactured by Kizai Co., Ltd. is used as the neutral solution, and MG-CCC manufactured by Kizai Co., Ltd. is used as the alkaline solution. The processing conditions at this time are 45 to 75 ° C., preferably 55 to 65 ° C.
C, pH 6-9, preferably 6.5-8.5, 2-3
Immersion treatment is carried out for 0 minutes, preferably about 5 minutes, followed by washing with water.
【００１６】電気化学的方法（陽極酸化）によって酸化
皮膜を形成する場合も、使用する電解質溶液は化成処理
と同じく中性溶液またはアルカリ性溶液である。中性溶
液及びアルカリ性溶液は前記と同様である。このときの
処理条件としては４５〜７５℃、好ましくは５５〜６５
℃、ｐＨ６〜９、好ましくは６．５〜８．５で、２〜３
０分、好ましくは５分程度浸漬処理し、その後水洗を行
う。When forming an oxide film by an electrochemical method (anodic oxidation), the electrolyte solution used is a neutral solution or an alkaline solution as in the chemical conversion treatment. The neutral solution and the alkaline solution are the same as above. The processing conditions at this time are 45 to 75 ° C., preferably 55 to 65 ° C.
C, pH 6-9, preferably 6.5-8.5, 2-3
Immersion treatment is carried out for 0 minutes, preferably about 5 minutes, followed by washing with water.
【００１７】引き続いて本発明に係る高圧蒸気処理を行
う。この蒸気処理は酸化皮膜を形成された被処理物表面
の耐食性を向上させるための工程であり、オートクレー
ブ中に被処理物をセッティングし、圧力１．５〜１０kg
f／cm2、好ましくは３〜６kgf／cm2で５〜６０分、好ま
しくは１５〜３０分加圧する。このときのオートクレー
ブ内温度は約１１０℃〜２００℃、好ましくは１２０℃
〜１８０℃である。Subsequently, the high pressure steam treatment according to the present invention is performed. This steam treatment is a process for improving the corrosion resistance of the surface of the object to be treated on which an oxide film has been formed. The object to be treated is set in an autoclave and the pressure is 1.5 to 10 kg.
Pressure is applied at f / cm 2 , preferably 3 to 6 kgf / cm 2 for 5 to 60 minutes, preferably 15 to 30 minutes. At this time, the temperature in the autoclave is about 110 ° C to 200 ° C, preferably 120 ° C.
~ 180 ° C.
【００１８】上記圧力が１．５kgf／cm2未満のときは酸
化皮膜の水和反応が不十分となり皮膜の耐食性向上効果
が少なくなる。一方１０kgf／cm2を超えると設備費が過
大となり、ランニングコストも嵩む。また、加圧時間が
５分未満では酸化皮膜の水和反応が不十分となり皮膜の
耐食性向上効果が少なくなる。一方、６０分を超えると
被処理物表面に過剰の水和物が生成し、塗膜の密着性を
低下させ、さらに経済的にも不利となる。When the above pressure is less than 1.5 kgf / cm 2, the hydration reaction of the oxide film is insufficient and the effect of improving the corrosion resistance of the film is reduced. On the other hand, if it exceeds 10 kgf / cm 2 , the equipment cost becomes excessive and the running cost also increases. If the pressurizing time is less than 5 minutes, the hydration reaction of the oxide film will be insufficient and the effect of improving the corrosion resistance of the film will be reduced. On the other hand, if it exceeds 60 minutes, an excessive amount of hydrate is generated on the surface of the object to be treated, the adhesion of the coating film is lowered, and it is economically disadvantageous.
【００１９】以上の各工程を経て表面処理を終了した被
処理物は腐食を防ぐために速やかに乾燥炉へ移して乾燥
させることが好ましい。It is preferable that the object to be treated which has been subjected to the surface treatment through each of the above steps is immediately transferred to a drying furnace to be dried in order to prevent corrosion.
【００２０】次に実施例および比較例を示して本発明を
具体的に説明するが、本発明はこれらの実施例によって
限定されるものではない。
実施例１
マグネシウム合金材（ＡＺ９１Ｄ材）を脱脂処理したの
ち、前記したキザイ（株）製の中性溶液を処理液として
６０℃で１０分間浸漬による化成処理を行った。そして
被処理物を水洗後、オートクレーブへ移し圧力５kgf／c
m2で２０分間蒸気中で加圧した。このときの内部温度は
１５０℃であった。得られた被処理物の酸化皮膜は濃灰
色であった。Next, the present invention will be specifically described by showing Examples and Comparative Examples, but the present invention is not limited to these Examples. Example 1 A magnesium alloy material (AZ91D material) was degreased, and then a chemical conversion treatment was performed by dipping at 60 ° C. for 10 minutes using the above neutral solution of Kizai Co., Ltd. as a treatment liquid. Then, after washing the object to be treated with water, it is transferred to an autoclave and pressure is 5 kgf / c.
Pressurized in steam for 20 minutes at m 2 . The internal temperature at this time was 150 ° C. The oxide film of the obtained object to be treated was dark gray.
【００２１】実施例２
マグネシウム合金材（ＡＺ９１Ｄ材）を脱脂処理したの
ち、アルカリ性溶液を処理液として６０℃で１０分間浸
漬による化成処理を行った。そして被処理物を水洗後、
オートクレーブへ移し圧力５kgf／cm2で２０分間蒸気中
で加圧した。このときの内部温度は１５０℃であった。
得られた被処理物の酸化皮膜は黒色であった。Example 2 A magnesium alloy material (AZ91D material) was degreased and then subjected to chemical conversion treatment by immersion for 10 minutes at 60 ° C. using an alkaline solution as a treatment liquid. And after washing the object to be treated,
It was transferred to an autoclave and pressurized in steam at a pressure of 5 kgf / cm 2 for 20 minutes. The internal temperature at this time was 150 ° C.
The oxide film of the obtained object to be treated was black.
【００２２】比較例１
マグネシウム合金材（ＡＺ９１Ｄ材）を脱脂処理したの
ち、前記したキザイ（株）製の中性溶液を処理液として
６０℃で１０分間浸漬による化成処理を行い、その後水
洗した。得られた被処理物の皮膜は灰色であった。Comparative Example 1 A magnesium alloy material (AZ91D material) was degreased, then subjected to chemical conversion treatment by dipping at 60 ° C. for 10 minutes using the above-mentioned neutral solution manufactured by Kizai Co., Ltd. as a treatment liquid, and then washed with water. The film of the obtained object to be treated was gray.
【００２３】比較例２
マグネシウム合金材（ＡＺ９１Ｄ材）を脱脂処理したの
ち、アルカリ性溶液を処理液として６０℃で１０分間浸
漬による化成処理を行い、その後水洗した。得られた被
処理物の皮膜は茶色であった。Comparative Example 2 A magnesium alloy material (AZ91D material) was degreased, then subjected to chemical conversion treatment by dipping at 60 ° C. for 10 minutes using an alkaline solution as a treatment liquid, and then washed with water. The film of the obtained object to be treated was brown.
【００２４】比較例３
マグネシウム合金材（ＡＺ９１Ｄ材）を脱脂処理したの
ち、エッチング処理、続いて表面調整処理を施した。こ
の被処理物を水洗後、重フッ化ナトリウム１５ｇ／Ｌ、
重クロム酸ナトリウム１８０ｇ／Ｌ、硫酸アルミニウム
１０ｇ／Ｌ、硝酸８４ｍｌ／Ｌからなる化成処理水溶液
を用い、室温（２０℃）で３分間浸漬処理した。得られ
た被処理物の皮膜は黄銅色であった。Comparative Example 3 A magnesium alloy material (AZ91D material) was degreased, then etched, and then surface-conditioned. After washing this treated material with water, sodium bifluoride 15 g / L,
Immersion treatment was performed for 3 minutes at room temperature (20 ° C.) using a chemical conversion treatment aqueous solution containing 180 g / L of sodium dichromate, 10 g / L of aluminum sulfate, and 84 ml / L of nitric acid. The film of the obtained object to be treated had a brass color.
【００２５】実施例１、２および比較例１〜３の被処理
物について、ＪＩＳ Ｚ ２３７１に準ずる塩水噴霧試験
（７２時間）による耐食性評価を行った。その結果を表
１に示す。The objects to be treated in Examples 1 and 2 and Comparative Examples 1 to 3 were evaluated for corrosion resistance by a salt spray test (72 hours) according to JIS Z2371. The results are shown in Table 1.
【００２６】[0026]
【表１】 [Table 1]
【００２７】表１の評価内容から明らかなように、本実
施例の表面処理方法による被処理物は、いずれも軽い腐
食はあるものの十分に耐食性が保たれており、さらにこ
の処理表面に塗膜を形成して商品とするに十分な状態で
あった。As is clear from the evaluation contents of Table 1, all the objects to be treated by the surface treatment method of the present example have sufficient corrosion resistance even though they are slightly corroded, and a coating film is formed on the treated surface. Was in a sufficient state to form a product.
【００２８】[0028]
【発明の効果】本発明の表面処理方法によれば、中性溶
液またはアルカリ性溶液を処理液として、化学的方法ま
たは電気化学的方法のいずれかの方法によりマグネシウ
ム材またはマグネシウム合金材の表面に酸化皮膜を形成
させるがその際、被処理物表面に微細なポアが形成さ
れ、塗膜の密着性を向上することができる。According to the surface treatment method of the present invention, the surface of a magnesium material or a magnesium alloy material is oxidized by a chemical method or an electrochemical method using a neutral solution or an alkaline solution as a processing solution. When a film is formed, fine pores are formed on the surface of the object to be treated, and the adhesion of the film can be improved.
【００２９】また、酸化皮膜を形成させた後、さらに高
圧蒸気雰囲気中で処理するため、被処理物表面に従来法
であるクロム酸処理よりも高い耐食性を有する酸化皮膜
を形成することができる。さらに、酸化皮膜に濃灰色か
ら黒色までの異なる色調を持たせることができる。Further, after the oxide film is formed, the treatment is further performed in a high-pressure steam atmosphere, so that the oxide film having higher corrosion resistance than the conventional chromic acid treatment can be formed on the surface of the object to be treated. Furthermore, the oxide film can have different shades from dark gray to black.
【００３０】また、本発明の処理方法ではクロム酸を使
用しないため、廃水処理が容易であるとともに排水、廃
液処理に関わるコストの低減もでき、また作業環境、環
境保護の観点からも有用な処理方法である。Further, since the treatment method of the present invention does not use chromic acid, the treatment of wastewater is easy and the cost related to the treatment of wastewater and waste liquid can be reduced, and the treatment is also useful from the viewpoint of working environment and environmental protection. Is the way.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 久保田 福太郎 東京都練馬区大泉学園町７−22−７ (72)発明者 山口 洋三 東京都台東区台東４−30−７ 株式会社富 士商会内 (72)発明者 岡村 敏信 東京都中央区日本橋小伝馬町９−10 小伝 馬町ビル キザイ株式会社内 (72)発明者 松原 進 東京都品川区北品川６−７−35 ソニー株 式会社内 (72)発明者 長谷川 幸介 東京都品川区北品川６−７−35 ソニー株 式会社内 Ｆターム(参考） 4K026 AA01 AA21 BA08 BB08 BB10 CA14 CA15 CA18 DA01 EA07 EA08 EA09 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Fukutaro Kubota 7-22-7 Oizumi Gakuencho, Nerima-ku, Tokyo (72) Inventor Yozo Yamaguchi 4-30-7 Taito, Taito-ku, Tokyo Wealth Co., Ltd. Shishikai (72) Inventor Toshinobu Okamura 9-10 Kodenmacho, Nihonbashi, Chuo-ku, Tokyo Koden Mamachi Building Kizai Co., Ltd. (72) Inventor Susumu Matsubara 6-7-35 Kitashinagawa, Shinagawa-ku, Tokyo Sony Corporation Inside the company (72) Inventor Kosuke Hasegawa 6-7-35 Kitashinagawa, Shinagawa-ku, Tokyo Sony Corporation Inside the company F term (reference) 4K026 AA01 AA21 BA08 BB08 BB10 CA14 CA15 CA18 DA01 EA07 EA08 EA09
Claims (3)
材の表面に、中性溶液またはアルカリ性溶液を処理液と
して、化学的方法または電気化学的方法のいずれかの方
法により酸化皮膜を形成させた後、高圧蒸気雰囲気中で
処理することを特徴とするマグネシウム材またはマグネ
シウム合金材の表面処理方法。1. A high-pressure steam after forming an oxide film on the surface of a magnesium material or a magnesium alloy material by a chemical solution or an electrochemical method using a neutral solution or an alkaline solution as a treatment liquid. A method for surface treatment of a magnesium material or a magnesium alloy material, which comprises performing the treatment in an atmosphere.
て、前記高圧蒸気による処理を圧力１．５〜１０kgf／c
m2の範囲で行うことを特徴とするマグネシウム材または
マグネシウム合金材の表面処理方法。2. The surface treatment method according to claim 1, wherein the treatment with the high-pressure steam is performed at a pressure of 1.5 to 10 kgf / c.
A surface treatment method for a magnesium material or a magnesium alloy material, which is performed in a range of m 2 .
て、前記マグネシウム材またはマグネシウム合金材が、
ダイカスト法または射出成形法による成形物であること
を特徴とするマグネシウム材またはマグネシウム合金材
の表面処理方法。3. The surface treatment method according to claim 1, wherein the magnesium material or magnesium alloy material is
A surface treatment method of a magnesium material or a magnesium alloy material, which is a molded product by a die casting method or an injection molding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10234810A JP2000064057A (en) | 1998-08-21 | 1998-08-21 | Surface treatment method of magnesium material or magnesium alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10234810A JP2000064057A (en) | 1998-08-21 | 1998-08-21 | Surface treatment method of magnesium material or magnesium alloy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000064057A true JP2000064057A (en) | 2000-02-29 |
Family
ID=16976755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10234810A Pending JP2000064057A (en) | 1998-08-21 | 1998-08-21 | Surface treatment method of magnesium material or magnesium alloy material |
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| Country | Link |
|---|---|
| JP (1) | JP2000064057A (en) |
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|---|---|---|---|---|
| JP2003304000A (en) * | 2002-04-08 | 2003-10-24 | Citizen Electronics Co Ltd | Method for manufacturing package for light-emitting diode |
| JP2008125622A (en) * | 2006-11-17 | 2008-06-05 | National Institute For Materials Science | Biodegradable magnesium material |
| KR100980713B1 (en) | 2008-07-18 | 2010-09-07 | 현대자동차주식회사 | Method for surface treatment of a magnesium alloy part |
| JP2013023768A (en) * | 2011-07-26 | 2013-02-04 | National Institute Of Advanced Industrial Science & Technology | Magnesium alloy material, and method of treating surface of magnesium alloy |
| JP2014125639A (en) * | 2012-12-25 | 2014-07-07 | Shibaura Institute Of Technology | High-corrosion-resistance magnesium-based material and production method thereof, and surface treatment method for magnesium-based material |
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| CN106894011A (en) * | 2017-01-20 | 2017-06-27 | 深圳市天合兴五金塑胶有限公司 | Antioxidant magnesium alloy surface treatment process high |
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1998
- 1998-08-21 JP JP10234810A patent/JP2000064057A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003304000A (en) * | 2002-04-08 | 2003-10-24 | Citizen Electronics Co Ltd | Method for manufacturing package for light-emitting diode |
| JP2008125622A (en) * | 2006-11-17 | 2008-06-05 | National Institute For Materials Science | Biodegradable magnesium material |
| KR100980713B1 (en) | 2008-07-18 | 2010-09-07 | 현대자동차주식회사 | Method for surface treatment of a magnesium alloy part |
| JP2013023768A (en) * | 2011-07-26 | 2013-02-04 | National Institute Of Advanced Industrial Science & Technology | Magnesium alloy material, and method of treating surface of magnesium alloy |
| JP2014125639A (en) * | 2012-12-25 | 2014-07-07 | Shibaura Institute Of Technology | High-corrosion-resistance magnesium-based material and production method thereof, and surface treatment method for magnesium-based material |
| JP5978376B1 (en) * | 2015-11-04 | 2016-08-24 | Ｔｏｄａ株式会社 | Method for manufacturing acoustic magnesium diaphragm and magnesium diaphragm for acoustic |
| WO2017078010A1 (en) * | 2015-11-04 | 2017-05-11 | Ｔｏｄａ株式会社 | Method for manufacturing acoustic magnesium diaphragm and acoustic magnesium diaphragm |
| CN108353230A (en) * | 2015-11-04 | 2018-07-31 | Ｔｏｄａ株式会社 | The manufacturing method and sound equipment magnesium oscillating plate of sound equipment magnesium oscillating plate |
| CN108353230B (en) * | 2015-11-04 | 2020-09-15 | Ｔｏｄａ株式会社 | Method for manufacturing acoustic magnesium diaphragm and acoustic magnesium diaphragm |
| CN106894011A (en) * | 2017-01-20 | 2017-06-27 | 深圳市天合兴五金塑胶有限公司 | Antioxidant magnesium alloy surface treatment process high |
| CN110804736A (en) * | 2019-09-26 | 2020-02-18 | 安徽自动化仪表有限公司 | Anticorrosion process for cable bridge |
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