JP2001335875A - Aluminum product having antibacterial property - Google Patents
Aluminum product having antibacterial propertyInfo
- Publication number
- JP2001335875A JP2001335875A JP2000161454A JP2000161454A JP2001335875A JP 2001335875 A JP2001335875 A JP 2001335875A JP 2000161454 A JP2000161454 A JP 2000161454A JP 2000161454 A JP2000161454 A JP 2000161454A JP 2001335875 A JP2001335875 A JP 2001335875A
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- JP
- Japan
- Prior art keywords
- copper
- weight
- aluminum
- silver
- concentration
- 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
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建築材料、事務用
品、、輸送用機器、各種包装用容器、日用品、家電製
品、台所製品など、人間が直接接触する場所において使
用されている箇所に使用されているアルミニウム製品な
どに加工性を失うことなく抗菌性を付与できるアルミニ
ウム製品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in places where humans are in direct contact, such as building materials, office supplies, transportation equipment, various packaging containers, daily necessities, home appliances and kitchen products. The present invention relates to an aluminum product capable of imparting an antibacterial property to a manufactured aluminum product or the like without losing workability.
【０００２】[0002]
【従来の技術】近年、衛生意識の向上に伴って、建築材
料の構造物、装置、器具類、自動車、航空機、船舶など
の輸送機器、歯ブラシ、櫛、タオルなどのトイレタリー
用用品、飲食品に触れる器具や用具類、台所用品、玩
具、日用品、雑貨、家電製品のケーシング等人間が直接
接触する面あるいは飲食品が接触する物品に抗菌作用、
滅菌作用を有する物質を混入したり、コーティングした
りして抗菌作用を付与することが広く行われるようにな
ってきた。ここで使用される抗菌剤あるいは滅菌剤とし
ては、通常使用されている殺菌剤または滅菌剤として使
用されている無機物質または有機化合物が使用されてい
る。例えばアルミニウム材においては銀、銅、亜鉛など
をゼオライト、シリカゲル、ケイ酸ガラスなどに吸着さ
せて粉末としたもの、または酸化チタンに代表されるよ
うな光（可視光あるいはブラックライト）照射下での殺
菌効果を利用したものなど混入した例等を挙げることが
できる。2. Description of the Related Art In recent years, as awareness of hygiene has increased, construction materials such as structures, devices, appliances, transportation equipment such as automobiles, aircraft, and ships, toiletries such as toothbrushes, combs, and towels, and foods and drinks have been developed. Antibacterial effect on surfaces that humans come into direct contact with or food and beverages, such as touching appliances and utensils, kitchen utensils, toys, daily necessities, miscellaneous goods, casings of home appliances,
It has been widely practiced to mix or coat a substance having a sterilizing effect to impart an antibacterial effect. As the antibacterial agent or the sterilizing agent used here, an inorganic substance or an organic compound which is generally used as a germicidal agent or a sterilizing agent is used. For example, in the case of aluminum materials, silver, copper, zinc, etc. are adsorbed on zeolite, silica gel, silicate glass, etc. to form a powder, or under light (visible light or black light) irradiation represented by titanium oxide. Examples of mixing such as those utilizing a bactericidal effect can be given.
【０００３】一方アルミニウム製品は軽い、加工性がよ
い、耐食性がよい、比較的強度がありかつコストが安い
などの特徴を有するところから、建築材料、事務用品、
輸送機器、日用品雑貨、家電用品のケーシングあるいは
飲食品用の包装材料、例えばアルミニウム箔等の分野に
おいて広く利用されている。金属類はその物性を改善す
るため他の金属、場合によっては高価な金属類を添加し
て合金として使用することが多い。一般に合金とする
と、純金属に比して剛性があがり加工性が低下する。ア
ルミニウムのようにコストが安く軟質の金属においても
例外ではなく、他の金属の配合量はその増加に伴って加
工性が低下することになるので、必要となる性能に合わ
せてその配合量はできるだけ少量の方が好ましいことが
多い。On the other hand, aluminum products have characteristics such as lightness, good workability, good corrosion resistance, relatively high strength and low cost.
It is widely used in the field of transport equipment, daily necessities, casings for household appliances, and packaging materials for food and drink, such as aluminum foil. Metals are often used as alloys by adding other metals, and in some cases, expensive metals to improve their physical properties. Generally, when an alloy is used, rigidity is increased and workability is reduced as compared with a pure metal. It is no exception for soft metals such as aluminum, which are inexpensive and the workability of other metals decreases with the increase in the amount of the other metals. Smaller amounts are often preferred.
【０００４】一般に人体に直接接触する製品や、飲食品
などを取り扱う分野の製品においても抗菌性、滅菌性が
あることは望ましい性能である。このような分野の製品
において、抗菌性を付与するために抗菌剤を塗布する方
法では、摩耗や剥離し易いため短期間で抗菌性を失うば
かりでなくコストアップになるので実務的でない。アル
ミニウムはそれ自体抗菌性、滅菌性のない金属材料であ
るのでこれに抗菌性のある銅または銀を多量に含む合金
材料が多数提案されている（最近の例としては特開平１
１−２１７６４８号公報）。これらの提案を見ると、い
ずれも銅を多量含有させることを必要としており、この
結果アルミニウムの特性である加工性を失うばかりか耐
食性を損なった組成の合金となって、実用性に乏しいも
のとなっている。また銀の場合はそれ自体高価であるの
で加工性、耐食性に加えさらにコスト的にさらに経済的
な障害をもたらしている。[0004] In general, it is desirable for products that come into direct contact with the human body or products in the field of food and drink to have antibacterial properties and sterility. In a product in such a field, a method of applying an antibacterial agent to impart antibacterial properties is not practical because not only the antibacterial properties are lost in a short period of time due to easy abrasion or peeling, but also the cost is increased. Since aluminum itself is a metal material having no antibacterial properties and sterilization properties, a large number of alloy materials containing a large amount of copper or silver having antibacterial properties have been proposed.
1-217648). Looking at these proposals, all require a large amount of copper, resulting in an alloy with a composition that not only loses workability, which is the property of aluminum, but also impairs corrosion resistance, and has poor practicality. Has become. In addition, silver itself is expensive, which causes further cost and economic obstacles in addition to processability and corrosion resistance.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、抗菌剤とし
て使用する銅およびまたは銀の配合量を制限してアルミ
ニウム材の特徴である加工性を失うことなく、コスト的
にも安価であって、従来の抗菌性アルミニウム製品に劣
らない性能を有する抗菌性を有するアルミニウム製品お
よびその製造方法の提供を目的とする。DISCLOSURE OF THE INVENTION The present invention restricts the amount of copper and / or silver to be used as an antibacterial agent, without losing the workability characteristic of aluminum materials, and is economical. Another object of the present invention is to provide an aluminum product having antibacterial properties having performance not inferior to conventional antibacterial aluminum products and a method for producing the same.
【０００６】[0006]
【課題を解決するための手段】本発明は［１］ 銅を
０．１重量％ないし０．５重量％未満含むアルミニウム
合金材であって、表層中の銅濃度が内部より高くなって
いる抗菌性アルミニウム製品、［２］ 銅を０．１重量
％ないし０．５重量％未満含むアルミニウム合金材であ
って、表層中の銅濃度が内部より高くなっており、酸化
膜厚さが６ｎｍ以下である抗菌性アルミニウム製品、
［３］ 銀を０．０５重量％〜０．５重量％含むアルミ
ニウム合金材であって、表層中の銅濃度が内部より高く
なっている酸化膜厚さが６ｎｍ以下である抗菌性アルミ
ニウム製品、［４］ 銅を０．１重量％ないし０．５重
量％未満含み、かつ銀を０．０２重量％〜０．５重量％
含むアルミニウム合金材であって、表層中の銅濃度が内
部より高くなっている抗菌性アルミニウム製品、［５］
銅を０．１重量％ないし０．５重量％未満および／ま
たは銀を０．０２〜０．５重量％含み、かつマグネシウ
ムを０．０３重量％〜２重量％含むアルミニウム合金材
であって、表層中の銅濃度が内部より高くなっている抗
菌性アルミニウム製品、The present invention provides [1] an antibacterial aluminum alloy containing 0.1% to less than 0.5% by weight of copper, wherein the copper concentration in the surface layer is higher than that in the inside. [2] An aluminum alloy material containing 0.1% to less than 0.5% by weight of copper, wherein the copper concentration in the surface layer is higher than that of the inside and the oxide film thickness is 6 nm or less. Some antibacterial aluminum products,
[3] An antimicrobial aluminum product which is an aluminum alloy material containing silver in an amount of 0.05% by weight to 0.5% by weight, wherein the copper concentration in the surface layer is higher than that in the inside and the oxide film thickness is 6 nm or less; [4] containing 0.1% to less than 0.5% by weight of copper and 0.02% to 0.5% by weight of silver
An aluminum alloy material comprising an antimicrobial aluminum product having a higher copper concentration in the surface layer than in the interior, [5]
An aluminum alloy material comprising 0.1% to less than 0.5% by weight of copper and / or 0.02 to 0.5% by weight of silver and 0.03% to 2% by weight of magnesium, Antibacterial aluminum product with copper concentration in the surface layer higher than inside,
【０００７】［６］ 銅を０．１重量％ないし０．５重
量％未満および／または銀を０．０２重量％〜０．５重
量％含む合金材から製造されたアルミニウム製品を表層
中の銅濃度および／または銀濃度が内部より高くなるよ
うに熱処理することを特徴とする抗菌性アルミニウム製
品の製造方法、［７］ 銅を０．１重量％ないし０．５
重量％未満および／または銀を０．０２重量％〜０．５
重量％およびマグネシウムを０．０３〜２重量％含む合
金材から製造されたアルミニウム製品を表層中の銅濃度
および／または銀濃度が内部より高くなるように熱処理
することを特徴とする抗菌性アルミニウム製品の製造方
法、［８］ 銅を０．１重量％ないし０．５重量％未満
含むアルミニウム合金材から製造されたアルミニウム製
品を、２３０℃〜３５０℃の温度において表層中の銅濃
度が内部より高くなるように熱処理することを特徴とす
る抗菌性アルミニウム製品の製造方法、および［９］
銀を０．０５重量％〜０．５重量％含むアルミニウム合
金材；銅を０．１重量％ないし０．５重量％未満および
銀を０．０２重量％〜０．５重量％含むアルミニウム合
金材；銅を０．１重量％ないし０．５重量％未満または
銀を０・０２〜０．５重量％およびマグネシウムを０．
０３重量％〜２重量％含むアルミニウム合金材；または
銅を０．１重量％ないし０．５重量％未満、銀を０．０
２重量％〜０．５重量％およびマグネシウムを０．０３
重量％〜２重量％含むアルミニウム合金材のうちの一つ
のアルミニウム合金材から製造されたアルミニウム製品
を、２３０〜４００℃の温度において表層中の銅濃度が
内部より高くなるように熱処理することを特徴とする抗
菌性アルミニウム製品の製造方法、を開発することによ
り上記の課題を解決した。[6] An aluminum product manufactured from an alloy material containing 0.1% by weight to less than 0.5% by weight of copper and / or 0.02% to 0.5% by weight of silver is coated with copper in the surface layer. A method for producing an antibacterial aluminum product, wherein heat treatment is performed so that the concentration of silver and / or the concentration of silver is higher than that of the inside; [7] 0.1 to 0.5% by weight of copper
Weight percent and / or 0.02% to 0.5% silver by weight.
An aluminum product manufactured from an alloy material containing 0.03 to 2% by weight of magnesium and 0.03 to 2% by weight of heat, so that a copper concentration and / or a silver concentration in a surface layer are heat-treated so as to be higher than inside. [8] An aluminum product manufactured from an aluminum alloy material containing 0.1% by weight to less than 0.5% by weight of copper at a temperature of 230 ° C to 350 ° C. A method for producing an antibacterial aluminum product, characterized by heat-treating the product, and [9].
Aluminum alloy containing 0.05% to 0.5% by weight of silver; aluminum alloy containing 0.1% to less than 0.5% by weight of copper and 0.02% to 0.5% by weight of silver 0.1% to less than 0.5% by weight of copper or 0.02 to 0.5% by weight of silver and 0.2% by weight of magnesium.
Aluminum alloy material containing 0.3% to 2% by weight; or 0.1% to less than 0.5% by weight of copper and 0.0% of silver.
2% to 0.5% by weight and magnesium at 0.03%
An aluminum product manufactured from one of the aluminum alloy materials containing from 2 wt% to 2 wt% is heat-treated at a temperature of 230 to 400 ° C so that the copper concentration in the surface layer is higher than that of the inside. The above problems were solved by developing a method for producing an antibacterial aluminum product.
【０００８】[0008]
【発明の実施の形態】本発明は、アルミニウムに対し銅
および／または銀を配合した合金、さらにこれらの合金
に対してさらにマグネシウムを配合した合金を使用す
る。銅は、それ自体抗菌作用を有しているが、ある程度
以上の濃度でないとその能力は発揮できず抗菌作用を発
揮できない。本発明においてはアルミニウム合金中の銅
濃度が０．１重量％ないし０．５重量％未満の低濃度の
合金を用いるために、表層（本発明において「表層」と
は表面よりほぼ５０ｎｍ以内をいう。）の銅濃度を内部
より高くすることを必要とする。銅濃度が０．１重量％
未満では抗菌効果が低く、一方０．５重量％以上含有す
る場合においては添加量に比して抗菌性の改善効果は低
いだけでなく、耐食性が大きく低下し問題となる上、剛
性も高くなって加工性も低下し、アルミニウムが有する
特性を阻害する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention uses an alloy in which copper and / or silver is blended with aluminum, and an alloy in which magnesium is further blended with these alloys. Copper itself has an antibacterial action, but if its concentration is not less than a certain level, copper cannot exert its ability and cannot exert an antibacterial action. In the present invention, in order to use a low-concentration alloy having a copper concentration of 0.1% by weight to less than 0.5% by weight in an aluminum alloy, a surface layer (in the present invention, "surface layer" means a region within approximately 50 nm from the surface). ) Requires a higher copper concentration than inside. Copper concentration is 0.1% by weight
If it is less than 0.5% by weight, on the other hand, if it is contained in an amount of 0.5% by weight or more, not only the effect of improving the antibacterial property is low compared to the added amount, but also the corrosion resistance is greatly reduced and becomes a problem, and the rigidity is also increased. As a result, the workability is also reduced and the properties of aluminum are impaired.
【０００９】このような銅の低濃度においてアルミニウ
ム合金に抗菌性を持たせるには、表層濃度を内部の濃度
より高くすることが必要であり、例えば該合金製品を熱
処理することにより銅の表面濃度を内部より高くするこ
とができる。しかしその方法は特に限定する必要はな
い。表層の銅濃度はＥＳＣＡ（Ｅｌｅｃｔｒｏｎ Ｓｐ
ｅｃｔｒｏｓｃｏｐｙ ｆｏｒ Ｃｈｅｍｉｃａｌ Ａ
ｎａｌｙｓｉｓ）で測定することにより確認できる。ア
ルミニウムの酸化膜は、銅の抗菌性性能を阻害するが、
酸化膜の厚さが６ｎｍ以下であるときは問題がない。ア
ルミニウムの酸化膜の厚さはＥＳＣＡにより測定でき
る。In order to impart antibacterial properties to an aluminum alloy at such a low copper concentration, it is necessary to make the surface layer concentration higher than the internal concentration. For example, by heat treating the alloy product, the surface concentration of the copper is increased. Can be higher than inside. However, the method does not need to be particularly limited. The copper concentration in the surface layer is ESCA (Electron Sp)
electroscopy for Chemical A
(analysis). Aluminum oxide film inhibits the antibacterial performance of copper,
There is no problem when the thickness of the oxide film is 6 nm or less. The thickness of the aluminum oxide film can be measured by ESCA.
【００１０】銀もまた抗菌性を有する金属である。この
抗菌性は０．０５重量％以上含有するとき効果がある。
ただ銀はアルミニウムに比して非常に高価なので、でき
れば０．３重量％以下であり、０．５重量％を超える量
を配合することはコスト的に極めて問題となる。特に少
量の銅とともに配合するときは総合効果があり、より少
量の０．０２重量％〜０．５重量％で十分抗菌性を発揮
するようになる。またマグネシウムはそれ自体に抗菌性
は全く見あたらないが、酸化されやすく、アルミニウム
の酸化膜の緻密さを破壊する作用があるので銅、銀など
の抗菌効果を助長させる作用がある。また酸化膜を薄く
する他の方法としてはアルカリ洗浄などをした後、速や
かに乾燥してから最終焼鈍をおこなう等の方法がある。Silver is also a metal having antibacterial properties. This antibacterial property is effective when contained at 0.05% by weight or more.
However, silver is very expensive compared to aluminum, so it is preferably not more than 0.3% by weight, and adding more than 0.5% by weight is extremely costly. Particularly when it is blended with a small amount of copper, it has an overall effect, and a smaller amount of 0.02% by weight to 0.5% by weight exhibits sufficient antibacterial properties. Magnesium itself has no antibacterial properties at all, but is easily oxidized and has the effect of destroying the denseness of the aluminum oxide film, and thus has the effect of promoting the antibacterial effect of copper, silver and the like. As another method of thinning the oxide film, there is a method of performing alkali annealing or the like, and then quickly drying and then performing final annealing.
【００１１】銅、銀などを含む本発明のアルミニウム製
品は、表層中の銅または銀の濃度を内部より高くする方
法として、そのまま最終製品となるときは鋳塊、熱間圧
延、冷間圧延、（箔圧延）のなかで、冷間圧延の途中、
または最終工程で、２〜１０時間２３０℃〜３５０℃で
熱処理をする。２３０℃未満の温度では銅を表層に偏析
させるのに長時間必要とし、３５０℃を超えるときは表
面層への偏析が認められなくなる。銀を配合したとき、
または銅と銀を配合したときあるいはこれらにマグネシ
ウムを併用したときには、抗菌作用が増すだけでなく熱
処理温度も４００℃まで許容されるようになる。[0011] The aluminum product of the present invention containing copper, silver, etc., can be used as a method for increasing the concentration of copper or silver in the surface layer from the inside. (Foil rolling), during cold rolling,
Alternatively, in the final step, heat treatment is performed at 230 ° C. to 350 ° C. for 2 to 10 hours. When the temperature is lower than 230 ° C., it takes a long time to segregate copper to the surface layer. When the temperature exceeds 350 ° C., segregation to the surface layer is not recognized. When silver is blended,
Alternatively, when copper and silver are blended or when magnesium is used in combination, not only the antibacterial action is increased but also the heat treatment temperature is allowed up to 400 ° C.
【００１２】[0012]
【実施例】［測定法］ （表層銅濃度の測定法）アルミニウム製品表層の銅濃度
は、ＥＳＣＡにより測定した。測定は、Ｘ線源、Ａｌκ
αモノクロメーター、分析径０．８ｍｍφ、光電子取り
出し角度６５ｄｅｇ．にて行い、銅濃度は得られたＡｌ
２ｐスペクトルおよび銅２ｐスペクトルの積分強度比と
感度計数を用い、Ａｌ中の銅濃度を算出した。EXAMPLES [Measurement Method] (Method of Measuring Surface Copper Concentration) The copper concentration of the aluminum product surface layer was measured by ESCA. The measurement was performed using an X-ray source, Alκ
α monochromator, analysis diameter 0.8 mmφ, photoelectron take-out angle 65 deg. And the copper concentration was
The copper concentration in Al was calculated using the integrated intensity ratio of the 2p spectrum and the copper 2p spectrum and the sensitivity coefficient.
【００１３】（表面酸化膜厚さの測定）まずＸ線源、Ａ
ｌκαモノクロメーター、分析径０．８ｍｍφ、光電子
取り出し角度６５ｄｅｇ．にてＡｌ２ｐスペクトルを測
定する。ＥＳＣＡでは一般的なアルミニウム材料のＡｌ
２ｐスペクトルはケミカルシフトにより、金属のＡｌス
ペクトルと酸化物のＡｌスペクトルの２つが検出され
る。今回は、このスペクトルのピーク分離を行い、各々
のスペクトルの積分強度を算出し、さらにＡｌ中の光電
子の取り出し角度から算出した電子の脱出深さのデータ
から、アルミニウムの酸化膜の厚さを求めた。(Measurement of Surface Oxide Film Thickness) First, an X-ray source, A
Iκα monochromator, analysis diameter 0.8 mmφ, photoelectron take-out angle 65 deg. The Al2p spectrum is measured at. In ESCA, the general aluminum material Al
In the 2p spectrum, two Al spectra of a metal and an Al spectrum of an oxide are detected by chemical shift. This time, the peaks of this spectrum were separated, the integrated intensity of each spectrum was calculated, and the thickness of the aluminum oxide film was calculated from the electron escape depth data calculated from the photoelectron extraction angle in Al. Was.
【００１４】（抗菌性試験）サンプルのアルミニウム箔
を５０ｍｍ角の大きさに切り出し、抗菌性試験に供し
た。使用した試験菌は、 １）黄色ブドウ球菌：（Ｓｔａｐｈｙｌｏｃｃｏｃｕｓ
ａｕｒｅｕｓ ＩＦＯ１２７３２，２）、大腸菌：
（Ｉ：Ｓｃｈｅｒｉｃｈｉａ ｃｏｌｉ ＩＦＯ３９７
２）を用いた。接種用菌液の調整は、普通ブイヨン培地
（ＮＢ培地）を滅菌精製水で５００倍に希釈し、ｐＨを
７．０±０．２に調整した『１／５００ＮＢ培地』に試
験菌を普通寒天培地（ＮＡ培地）で３５℃〜３７℃で１
８時間培養し、分散させたものを接種用菌液とした。(Antimicrobial test) An aluminum foil of a sample was cut into a size of 50 mm square and subjected to an antimicrobial test. The test bacteria used were: 1) Staphylococcus aureus: (Staphylococcus)
aureus IFO12732, 2), E. coli:
(I: Scherichia coli IFO397
2) was used. For the preparation of the inoculum for the inoculation, the test bacterium was added to the normal agar in a "1 / 500NB medium" in which a normal broth medium (NB medium) was diluted 500-fold with sterile purified water and the pH was adjusted to 7.0 ± 0.2. Medium at 35 ° C to 37 ° C in medium (NA medium)
The cells were cultured for 8 hours and dispersed to obtain a bacterial solution for inoculation.
【００１５】試験片は５０ｍｍに切り出したアルミニウ
ム箔を、エタノールをしみこませたガーゼで軽く拭き取
り乾燥させた。まず試験片を滅菌シャーレに入れ、その
試験面に接種用菌液を０．４ｍｌ接種し、その上に被覆
フィルムをかぶせた後、被覆フィルムに付着している菌
をＳＣＤＬＰブイヨン培地１０ｍｌでシャーレの中に十
分に洗い流し、ＳＡ培地で３５℃、４８時間培養した後
に菌数を測定した。対象供養は、６個の滅菌シャーレに
菌液０．５ｍｌを接種し、その上に被覆フィルムをかぶ
せて蓋をし、温度３５℃、湿度９０％以上の条件下で２
４時間保存した。保存後、被覆フィルムに付着している
菌をＳＣＤＬＰブイヨン培地１０ｍｌで洗い流し、ＳＡ
培地で３５℃、４８時間培養した後に菌数を測定した。The test piece was obtained by gently wiping an aluminum foil cut to 50 mm with a gauze soaked in ethanol and drying. First, the test piece was placed in a sterile petri dish, 0.4 ml of the inoculum solution was inoculated on the test surface, a coating film was placed on the test piece, and the bacteria adhering to the coating film were removed from the petri dish with 10 ml of SCDLP broth medium. The cells were thoroughly washed out and cultured in an SA medium at 35 ° C. for 48 hours, and the number of bacteria was measured. The target cultivation was performed by inoculating 0.5 ml of the bacterial solution into 6 sterilized petri dishes, covering with a covering film, covering the sterilized petri dish, and keeping the temperature at 35 ° C. and 90% or more in humidity.
Stored for 4 hours. After storage, the bacteria adhering to the coated film are washed away with 10 ml of SCDLP broth medium, and SA
After culturing in a medium at 35 ° C. for 48 hours, the number of bacteria was measured.
【００１６】（抗菌性の評価）以下の式により、生菌率
を求め、抗菌性の評価とした。 生菌率（％）＝（生菌数／接種直後の菌数）×１００ ＊接種直後の菌数は、２〜３×１０5 生菌率 ◎＝０．１％未満、＝０．１％〜１％未満、×
＝１％以上(Evaluation of antibacterial property) The viable cell rate was determined by the following formula, and the antibacterial property was evaluated. Viable cell rate (%) = (viable cell number / number of cells immediately after inoculation) × 100 * The number of cells immediately after inoculation is 2-3 × 10 5 viable cell rate ◎ = less than 0.1%, = 0.1% ~ 1%, ×
= 1% or more
【００１７】（実施例１）アルミニウム中の銅の濃度を
表１に示すように変えた影響をテストした。なおサンプ
ルは、２５０℃、５時間熱処理を行い銅の表面への偏析
を行った。合金中の銅の平均濃度、表層における銅濃
度、酸化膜厚を測定し抗菌テスト行った。結果を表１に
示す。Example 1 The effect of changing the concentration of copper in aluminum as shown in Table 1 was tested. The sample was heat-treated at 250 ° C. for 5 hours to segregate the copper surface. The antibacterial test was performed by measuring the average concentration of copper in the alloy, the copper concentration in the surface layer, and the oxide film thickness. Table 1 shows the results.
【００１８】[0018]
【表１】 [Table 1]
【００１９】（実施例２）アルミニウム中の銀の濃度を
表２に示すように変えた影響をテストした。なおサンプ
ルは、２５０℃、５時間熱処理を行った。合金中の銀の
平均濃度、酸化膜厚を測定し抗菌テスト行った。結果を
表２に示す。Example 2 The effect of changing the concentration of silver in aluminum as shown in Table 2 was tested. The sample was heat-treated at 250 ° C. for 5 hours. The antibacterial test was performed by measuring the average silver concentration and the oxide film thickness in the alloy. Table 2 shows the results.
【００２０】[0020]
【表２】 [Table 2]
【００２１】（実施例３）アルミニウム中の銅および銀
の濃度を表３に示すように変えた影響をテストした。な
おサンプルは、２５０℃、５時間熱処理を行い銅の表面
への偏析を行った。合金中の銅および銀の平均濃度、表
層における銅濃度、酸化膜厚を測定し抗菌テスト行っ
た。結果を表３に示す。Example 3 The effect of changing the concentrations of copper and silver in aluminum as shown in Table 3 was tested. The sample was heat-treated at 250 ° C. for 5 hours to segregate the copper surface. The average concentration of copper and silver in the alloy, the copper concentration in the surface layer, and the oxide film thickness were measured, and an antibacterial test was performed. Table 3 shows the results.
【００２２】[0022]
【表３】 [Table 3]
【００２３】（実施例４）アルミニウム中の銅およびマ
グネシウムの濃度を表４に示すように変えた影響をテス
トした。なおサンプルは、２５０℃、５時間熱処理を行
い銅の表面への偏析を行った。合金中の銅およびマグネ
シウムの平均濃度、表層における銅濃度、酸化膜厚を測
定し抗菌テスト行った。結果を表４に示す。Example 4 The effect of changing the concentrations of copper and magnesium in aluminum as shown in Table 4 was tested. The sample was heat-treated at 250 ° C. for 5 hours to segregate the copper surface. The antibacterial test was performed by measuring the average concentration of copper and magnesium in the alloy, the copper concentration in the surface layer, and the oxide film thickness. Table 4 shows the results.
【００２４】[0024]
【表４】 [Table 4]
【００２５】（実施例５）アルミ中の銅の濃度を表５に
示すように変え熱処理温度および処理時間を変え、銅の
表層への偏析をテストした。合金中の銅の平均濃度、熱
処理条件による表層への銅偏析と共に抗菌テスト行っ
た。結果を表５に示す。(Example 5) The concentration of copper in aluminum was changed as shown in Table 5 and the heat treatment temperature and treatment time were changed to test the segregation of copper on the surface layer. An antibacterial test was conducted along with the average concentration of copper in the alloy and the segregation of copper on the surface layer according to the heat treatment conditions. Table 5 shows the results.
【００２６】[0026]
【表５】 [Table 5]
【００２７】[0027]
【発明の効果】人間が直接手をふれる場所において使用
されるアルミニウム製品に抗菌性を付与するために、ア
ルミニウム地金に銅あるいは銀を配合することが行われ
ているが、これら金属を配合するとアルミニウムの優れ
た加工性の低下、耐食性の低下、させることは良く知ら
れている。本発明は、加工性の低下を少なくして、抗菌
性を高めたアルミニウム製品の開発に成功したものであ
り、配合量を少量でよいため、高価な銀などを使用した
ときであっても安価であって長期間抗菌性を失わない製
品とすることができた。In order to impart antibacterial properties to aluminum products used in places where humans can directly touch, aluminum or copper is mixed with copper or silver. It is well known that excellent workability and corrosion resistance of aluminum are reduced. The present invention has succeeded in developing an aluminum product having improved antibacterial properties by reducing the reduction in workability, and since the compounding amount may be small, even if expensive silver or the like is used, it is inexpensive. Thus, it was possible to obtain a product which does not lose antibacterial properties for a long period of time.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ２２Ｆ 1/00 ６８２ Ｃ２２Ｆ 1/00 ６８２ ６９１ ６９１Ｚ ６９１Ｂ (72)発明者 安部 慎哉 大阪府堺市海山町６丁224番地 昭和アル ミニウム株式会社内 (72)発明者 加藤 良知 大阪府堺市海山町６丁224番地 昭和アル ミニウム株式会社内 (72)発明者 福田 明夫 大阪府堺市海山町６丁224番地 昭和アル ミニウム株式会社内──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C22F 1/00 682 C22F 1/00 682 691 691Z 691B (72) Inventor Shinya Abe 6 Kaiyamacho, Sakai City, Osaka Prefecture 224, Showa Aluminum Co., Ltd. Aluminum Co., Ltd.
Claims (9)
満含むアルミニウム合金材であって、表層中の銅濃度が
内部より高くなっている抗菌性アルミニウム製品。1. An antibacterial aluminum product comprising an aluminum alloy material containing copper in an amount of 0.1% by weight to less than 0.5% by weight, wherein the copper concentration in the surface layer is higher than that in the inside.
満含むアルミニウム合金材であって、表層中の銅濃度が
内部より高くなっており、酸化膜厚さが６ｎｍ以下であ
る抗菌性アルミニウム製品。2. An antibacterial aluminum alloy containing 0.1% to less than 0.5% by weight of copper, wherein the copper concentration in the surface layer is higher than the inside and the oxide film thickness is 6 nm or less. Aluminum products.
アルミニウム合金材であって、表層中の銅濃度が内部よ
り高くなっている酸化膜厚さが６ｎｍ以下である抗菌性
アルミニウム製品。3. An antibacterial aluminum containing 0.05% to 0.5% by weight of silver, wherein the concentration of copper in the surface layer is higher than that of the inside and the oxide film thickness is 6 nm or less. Product.
満含み、かつ銀を０．０２重量％〜０．５重量％含むア
ルミニウム合金材であって、表層中の銅濃度が内部より
高くなっている抗菌性アルミニウム製品。4. An aluminum alloy material containing 0.1% to less than 0.5% by weight of copper and 0.02% to 0.5% by weight of silver, wherein the copper concentration in the surface layer is Antibacterial aluminum products getting higher.
満および／または銀を０．０２〜０．５重量％含み、か
つマグネシウムを０．０３重量％〜２重量％含むアルミ
ニウム合金材であって、表層中の銅濃度が内部より高く
なっている抗菌性アルミニウム製品。5. An aluminum alloy containing 0.1% to less than 0.5% by weight of copper and / or 0.02% to 0.5% by weight of silver and 0.03% to 2% by weight of magnesium. An antibacterial aluminum product that has a higher copper concentration in the surface layer than in the interior.
満および／または銀を０．０２重量％〜０．５重量％含
む合金材から製造されたアルミニウム製品を表層中の銅
濃度および／または銀濃度が内部より高くなるように熱
処理することを特徴とする抗菌性アルミニウム製品の製
造方法。6. The copper concentration in a surface layer of an aluminum product manufactured from an alloy material containing 0.1% to less than 0.5% by weight of copper and / or 0.02% to 0.5% by weight of silver. And / or a heat treatment so that the silver concentration becomes higher than the inside.
満および／または銀を０．０２重量％〜０．５重量％お
よびマグネシウムを０．０３〜２重量％含む合金材から
製造されたアルミニウム製品を表層中の銅濃度および／
または銀濃度を内部より高くなるように熱処理すること
を特徴とする抗菌性アルミニウム製品の製造方法。7. An alloy material containing 0.1% to less than 0.5% by weight of copper and / or 0.02% to 0.5% by weight of silver and 0.03% to 2% by weight of magnesium. Copper content in the surface layer and / or
Alternatively, a method for producing an antibacterial aluminum product, wherein the heat treatment is performed so that the silver concentration is higher than that inside.
満含むアルミニウム合金材から製造されたアルミニウム
製品を、２３０℃〜３５０℃の温度において表層中の銅
濃度が内部より高くなるように熱処理することを特徴と
する抗菌性アルミニウム製品の製造方法。8. An aluminum product manufactured from an aluminum alloy material containing 0.1% by weight to less than 0.5% by weight of copper so that the copper concentration in the surface layer is higher than that in the inside at a temperature of 230 ° C. to 350 ° C. A method for producing an antibacterial aluminum product, comprising heat-treating the product.
アルミニウム合金材；銅を０．１重量％ないし０．５重
量％未満および銀を０．０２重量％〜０．５重量％含む
アルミニウム合金材；銅を０．１重量％ないし０．５重
量％未満または銀を０・０２〜０．５重量％およびマグ
ネシウムを０．０３重量％〜２重量％含むアルミニウム
合金材；または銅を０．１重量％ないし０．５重量％未
満、銀を０．０２重量％〜０．５重量％およびマグネシ
ウムを０．０３重量％〜２重量％含むアルミニウム合金
材のうちの一つのアルミニウム合金材から製造されたア
ルミニウム製品を、２３０〜４００℃の温度において表
層中の銅濃度が内部より高くなるように熱処理すること
を特徴とする抗菌性アルミニウム製品の製造方法。9. An aluminum alloy material containing 0.05% to 0.5% by weight of silver; 0.1% to less than 0.5% by weight of copper and 0.02% to 0.5% of silver. Aluminum alloy material containing 0.1% to less than 0.5% by weight of copper or 0.02 to 0.5% by weight of silver and 0.03% to 2% by weight of magnesium; or Aluminum of one of aluminum alloy materials containing 0.1% to less than 0.5% by weight of copper, 0.02% to 0.5% by weight of silver and 0.03% to 2% by weight of magnesium A method for producing an antibacterial aluminum product, comprising heat-treating an aluminum product produced from an alloy material at a temperature of 230 to 400 ° C. so that the copper concentration in the surface layer is higher than that inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000161454A JP2001335875A (en) | 2000-05-31 | 2000-05-31 | Aluminum product having antibacterial property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000161454A JP2001335875A (en) | 2000-05-31 | 2000-05-31 | Aluminum product having antibacterial property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001335875A true JP2001335875A (en) | 2001-12-04 |
Family
ID=18665478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000161454A Pending JP2001335875A (en) | 2000-05-31 | 2000-05-31 | Aluminum product having antibacterial property |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001335875A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007070714A (en) * | 2005-09-09 | 2007-03-22 | Mitsubishi Alum Co Ltd | Antibacterial aluminum extension material, and method for producing the same |
| WO2013015110A1 (en) * | 2011-07-25 | 2013-01-31 | 日本軽金属株式会社 | Aluminum alloy plate and method for manufacturing same |
| KR101752634B1 (en) * | 2016-04-26 | 2017-07-03 | 주식회사 에코퀸 | Aluminium alloy with function of far infrared ray and negative ions and deodorization and sterilization function |
| KR101902757B1 (en) * | 2018-05-31 | 2018-10-01 | 주식회사 에코퀸 | Alloy with function of deodorization and sterilization function |
| WO2020013234A1 (en) * | 2018-07-12 | 2020-01-16 | 東洋アルミニウム株式会社 | Aluminum alloy foil and method for producing same |
| CN113943878A (en) * | 2021-10-14 | 2022-01-18 | 上海华峰铝业股份有限公司 | Aluminum alloy foil for positive current collector and preparation method and application thereof |
-
2000
- 2000-05-31 JP JP2000161454A patent/JP2001335875A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007070714A (en) * | 2005-09-09 | 2007-03-22 | Mitsubishi Alum Co Ltd | Antibacterial aluminum extension material, and method for producing the same |
| WO2013015110A1 (en) * | 2011-07-25 | 2013-01-31 | 日本軽金属株式会社 | Aluminum alloy plate and method for manufacturing same |
| JPWO2013015110A1 (en) * | 2011-07-25 | 2015-02-23 | 日本軽金属株式会社 | Aluminum alloy plate and method for producing aluminum alloy plate |
| US10041154B2 (en) | 2011-07-25 | 2018-08-07 | Nippon Light Metal Company, Ltd. | Aluminum alloy sheet and method for manufacturing same |
| KR101752634B1 (en) * | 2016-04-26 | 2017-07-03 | 주식회사 에코퀸 | Aluminium alloy with function of far infrared ray and negative ions and deodorization and sterilization function |
| KR101902757B1 (en) * | 2018-05-31 | 2018-10-01 | 주식회사 에코퀸 | Alloy with function of deodorization and sterilization function |
| WO2020013234A1 (en) * | 2018-07-12 | 2020-01-16 | 東洋アルミニウム株式会社 | Aluminum alloy foil and method for producing same |
| JP2020007629A (en) * | 2018-07-12 | 2020-01-16 | 東洋アルミニウム株式会社 | Aluminum alloy foil and manufacturing method therefor |
| CN112334586A (en) * | 2018-07-12 | 2021-02-05 | 东洋铝株式会社 | Aluminum alloy foil and method for producing same |
| CN112334586B (en) * | 2018-07-12 | 2021-12-31 | 东洋铝株式会社 | Aluminum alloy foil and method for producing same |
| JP7128676B2 (en) | 2018-07-12 | 2022-08-31 | 東洋アルミニウム株式会社 | Aluminum alloy foil and its manufacturing method |
| CN113943878A (en) * | 2021-10-14 | 2022-01-18 | 上海华峰铝业股份有限公司 | Aluminum alloy foil for positive current collector and preparation method and application thereof |
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