JP7431139B2 - Antibacterial golden parts and watches - Google Patents

Antibacterial golden parts and watches Download PDF

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JP7431139B2
JP7431139B2 JP2020175825A JP2020175825A JP7431139B2 JP 7431139 B2 JP7431139 B2 JP 7431139B2 JP 2020175825 A JP2020175825 A JP 2020175825A JP 2020175825 A JP2020175825 A JP 2020175825A JP 7431139 B2 JP7431139 B2 JP 7431139B2
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利磨 佐藤
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Citizen Watch Co Ltd
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Description

本発明は、抗菌性金色部材および時計に関する。 The present invention relates to an antibacterial golden member and a watch.

特許文献1には、表面に硬化層を有する装飾部品が記載されている。上記装飾部品は、上記硬化層は下地層および仕上げ層を有し、上記下地層はHf、Ti、Zrのうちから少なくとも1種類の金属からなる第1の窒化物層と、該第1の窒化物層上にHf、Ti、Zrのうちから少なくとも1種類の金属からなり上記第1の窒化物層とは異なる第2の窒化物層とを有する。また、上記仕上げ層は、Au-Ni合金、Au-Pd合金またはAu-Pt合金を主成分とするAu合金層である。 Patent Document 1 describes a decorative component having a hardened layer on its surface. In the decorative part, the hardened layer has a base layer and a finishing layer, and the base layer includes a first nitride layer made of at least one metal selected from Hf, Ti, and Zr; A second nitride layer made of at least one metal selected from Hf, Ti, and Zr and different from the first nitride layer is provided on the material layer. Further, the finishing layer is an Au alloy layer containing an Au--Ni alloy, an Au--Pd alloy, or an Au--Pt alloy as a main component.

国際公開第2008/041562号International Publication No. 2008/041562

しかしながら、特許文献1では、抗菌性についての言及がなく、実際に当該被膜の発色層の組み合わせでは、耐Niアレルギーと抗菌性とを両立する金色硬質被膜を実現することができない。 However, in Patent Document 1, there is no mention of antibacterial properties, and in fact, a golden hard coating that is both resistant to Ni allergy and antibacterial cannot be realized by combining the coloring layers of the coating.

そこで、本発明の目的は、Niフリーで人肌に優しく、さらに耐食性、耐傷性に優れる抗菌性金色部材を提供することにある。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an antibacterial golden member that is Ni-free, gentle on human skin, and has excellent corrosion resistance and scratch resistance.

本発明の抗菌性金色部材は、基材と、基材の上に設けられた発色層とを有し、上記発色層は、AuおよびAgを含む合金を含み、上記合金中、Agが5.00at%以上17.40at%未満の量で含まれる。 The antibacterial golden member of the present invention has a base material and a coloring layer provided on the base material, and the coloring layer contains an alloy containing Au and Ag, and in the alloy, Ag is 5.5%. It is contained in an amount of 00 at% or more and less than 17.40 at%.

本発明の抗菌性金色部材は、Niフリーで抗菌性を有し、耐食性および耐傷性に優れる。 The antibacterial golden member of the present invention is Ni-free, has antibacterial properties, and has excellent corrosion resistance and scratch resistance.

図1は、実施形態の抗菌性金色部材を説明するための断面模式図である。FIG. 1 is a schematic cross-sectional view for explaining the antibacterial golden member of the embodiment. 図2は、実施形態の抗菌性金色部材の変形例を説明するための断面模式図である。FIG. 2 is a schematic cross-sectional view for explaining a modification of the antibacterial golden member of the embodiment.

本発明を実施するための形態(実施形態)につき、詳細に説明する。以下の実施形態に記載した内容により本発明が限定されるものではない。また、以下に記載した構成要素には、当業者が容易に想定できるもの、実質的に同一のものが含まれる。さらに、以下に記載した構成は適宜組み合わせることが可能である。また、本発明の要旨を逸脱しない範囲で構成の種々の省略、置換または変更を行うことができる。 A mode (embodiment) for carrying out the present invention will be described in detail. The present invention is not limited to the contents described in the following embodiments. Further, the constituent elements described below include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the configurations described below can be combined as appropriate. Further, various omissions, substitutions, or changes in the configuration can be made without departing from the gist of the present invention.

実施形態の抗菌性金色部材は、基材と、基材の上に設けられた発色層とを有する。上記発色層は、AuおよびAgを含む合金を含み、上記合金中、Agが5.00at%以上17.40at%未満の量で含まれる。発色層を構成する合金にAgが上記特定の量で含まれているため、実施形態の抗菌性金色部材は抗菌性に優れるとともに、耐食性に優れる。このように、Agがある程度多い量で含まれていても、耐食性に優れるが、これは、AuとAgとが全率固溶することに起因すると考えられる。さらに、発色層を構成する合金にAgが含まれているため、実施形態の抗菌性金色部材は淡い金色を示す。すなわち、実施形態の抗菌性金色部材によれば、Niを用いずに(Niフリーであっても)、Niを用いたときと同様の淡い金色を実現できる。以下に、実施形態の抗菌性金色部材ついて、さらに具体的に述べる。 The antibacterial golden member of the embodiment includes a base material and a coloring layer provided on the base material. The coloring layer includes an alloy containing Au and Ag, and the alloy contains Ag in an amount of 5.00 at% or more and less than 17.40 at%. Since the alloy constituting the coloring layer contains Ag in the above-mentioned specific amount, the antibacterial golden member of the embodiment has excellent antibacterial properties and excellent corrosion resistance. As described above, even if a certain amount of Ag is contained, the corrosion resistance is excellent, but this is thought to be due to the complete solid solution of Au and Ag. Furthermore, since the alloy constituting the coloring layer contains Ag, the antibacterial golden member of the embodiment exhibits a pale golden color. That is, according to the antibacterial golden member of the embodiment, the same pale golden color as when using Ni can be achieved without using Ni (even if it is Ni-free). The antibacterial golden member of the embodiment will be described in more detail below.

ところで、一般的なメッキの金色は、スイス金色規格の1N-14~2N-18の範囲で、この範囲にある金色装飾部品は、鏡面光沢でL*(10.0~90.0)a*(6.0)b*(3.0)~L*(10.0~90.0)a*(1.0)b*(15.0)の範囲の金色調を示す。一方、実施形態の抗菌性金色部材は、上述のように、Niを用いたときと同様の淡い金色を実現できる。具体的には、L*(80.00~95.00)a*(-5.00~15.00)b*(10.00~45.00)の範囲であり、淡い金色を示す。また、実施形態の抗菌性金色部材は、より好ましくは、L*(80.00~95.00)、a*(0~6.00)b*(20.00~26.00)の範囲であり、より好ましい淡い金色を示す。 By the way, the gold color of general plating is in the range of 1N-14 to 2N-18 according to the Swiss gold standard, and gold decorative parts in this range have a specular luster of L * (10.0 to 90.0) a * (6.0)b * (3.0) to L * (10.0-90.0)a * (1.0)b * (15.0). On the other hand, the antibacterial golden member of the embodiment can achieve the same pale golden color as when Ni is used, as described above. Specifically, it is in the range of L * (80.00 to 95.00) a * (-5.00 to 15.00) b * (10.00 to 45.00), and exhibits a pale golden color. Further, the antibacterial golden member of the embodiment more preferably has L* (80.00 to 95.00), a* (0 to 6.00), b* (20.00 to 26.00). It has a more desirable pale golden color.

<実施形態1>
図1は、実施形態の抗菌性金色部材を説明するための断面模式図である。実施形態1の抗菌性金色部材では、図1に示すように、抗菌性金色部材100は、基材10、密着層11、硬化層12、発色層20がこの順で積層されている。
<Embodiment 1>
FIG. 1 is a schematic cross-sectional view for explaining the antibacterial golden member of the embodiment. In the antibacterial golden member of Embodiment 1, as shown in FIG. 1, the antibacterial golden member 100 includes a base material 10, an adhesive layer 11, a hardened layer 12, and a coloring layer 20 laminated in this order.

基材10は、たとえば、金属またはセラミックスから形成される。上記金属(合金を含む)としては、具体的には、ステンレス鋼、チタン、チタン合金、銅、銅合金、タングステンカーバイドなどが挙げられる。これらの金属は、単独で用いても、2種以上を組み合わせて用いてもよい。 The base material 10 is made of metal or ceramics, for example. Specific examples of the metals (including alloys) include stainless steel, titanium, titanium alloys, copper, copper alloys, and tungsten carbide. These metals may be used alone or in combination of two or more.

上記セラミックスとしては、具体的には、ジルコ二アセラミックスなどが挙げられる。このジルコ二アセラミックスは、たとえば、その組成が酸化イットリウム(Y22)または他の安定化剤(たとえば酸化マグネシウム(MgO)、酸化カルシウム(CaO))を3~7重量%含む安定化ジルコニアである。 Specific examples of the ceramics include zirconia ceramics. This zirconia ceramic is, for example, a stabilized zirconia whose composition contains 3 to 7% by weight of yttrium oxide (Y 2 O 2 ) or other stabilizers (eg, magnesium oxide (MgO), calcium oxide (CaO)). It is.

金属からなる基材100は、上記金属から従来公知の機械加工により調製される。また、基材100には、必要に応じて各種手段により、鏡面、梨地、ヘアライン模様、ホーニング模様、型打ち模様、エッチング模様などの表面仕上げが施されていてもよい。また、セラミックスからなる基材100は、たとえば時計ケース用の基材の場合は、以下のようにして製造できる。まず、ジルコニアおよびバインダーを主成分とする素材を用いて射出成形により時計ケースの形状を有する成形体を作製する。次いで、この成形体を機械加工により粗加工し、さらに、この粗加工した成形体を脱脂および焼成して時計ケースの粗基材を作製する。次いで、この粗基材を研削および研磨など機械加工することにより、時計ケース用の基材を製造する。 The base material 100 made of metal is prepared from the above metal by conventionally known machining. Further, the base material 100 may be given a surface finish such as a mirror finish, a satin finish, a hairline pattern, a honed pattern, a stamped pattern, or an etched pattern by various means as necessary. Further, the base material 100 made of ceramics, for example, in the case of a base material for a watch case, can be manufactured as follows. First, a molded body having the shape of a watch case is produced by injection molding using a material whose main components are zirconia and a binder. Next, this molded body is rough-processed by machining, and the rough-processed molded body is further degreased and fired to produce a rough base material for a watch case. Next, a base material for a watch case is manufactured by subjecting this rough base material to mechanical processing such as grinding and polishing.

密着層11は、TiおよびNbから選ばれる少なくとも1種を含む。これらは、単独で用いても、2種以上を組み合わせて用いてもよい。密着層11を設けると、基材と、密着層11上に設けられる層との密着性が高まり、厚い被膜の形成も可能となる。結果として抗菌性金色部材の耐傷性、耐摩耗性の向上に寄与できる。密着層11は、さらに酸素、窒素、炭素を微量に含んでいてもよい。密着層11が、硬化層12に含まれる元素と同じ元素を含む場合には、硬化層12との密着性が高まるため好ましい。 Adhesion layer 11 contains at least one selected from Ti and Nb. These may be used alone or in combination of two or more. Providing the adhesive layer 11 increases the adhesion between the base material and the layer provided on the adhesive layer 11, making it possible to form a thick film. As a result, it can contribute to improving the scratch resistance and abrasion resistance of the antibacterial golden member. The adhesive layer 11 may further contain trace amounts of oxygen, nitrogen, and carbon. It is preferable that the adhesion layer 11 contains the same elements as those contained in the hardened layer 12 because the adhesion with the hardened layer 12 is enhanced.

硬化層12は、TiおよびNbから選ばれる少なくとも1種の元素の窒化物、炭化物、炭窒化物、酸窒化物、炭窒酸化物または炭酸化物を含む。これらの化合物は、単独で用いても、2種以上を組み合わせて用いてもよい。これらのうちで、NbN、TiNが好適に用いられる。 The hardened layer 12 contains a nitride, carbide, carbonitride, oxynitride, carbonitride oxide, or carbonide of at least one element selected from Ti and Nb. These compounds may be used alone or in combination of two or more. Among these, NbN and TiN are preferably used.

このような硬化層12は、通常、発色層20よりも高い硬度(たとえば1000HV以上)を有する。耐傷性能はおおよそ被膜の厚さ、被膜の密着度および被膜の硬度の積により決まる。硬質層12を厚くすることで、被膜全体の硬度が高まり、結果として抗菌性金色部材の耐傷性の向上に寄与できる。また、このような硬化層12は、淡い金色を示す。これにより、発色層20が部分的に摩耗することがあっても、その摩耗した部分では、発色層20と同様の金色色調を呈する硬化層12が露出するため、発色層20の摩耗が目立たない。よって、長期にわたり抗菌性金色部材の美観を維持できる。 Such a hardened layer 12 usually has a hardness higher than that of the color forming layer 20 (for example, 1000 HV or more). Scratch resistance is approximately determined by the product of coating thickness, coating adhesion, and coating hardness. By increasing the thickness of the hard layer 12, the hardness of the entire coating increases, and as a result, it can contribute to improving the scratch resistance of the antibacterial golden member. Moreover, such a hardened layer 12 exhibits a pale gold color. As a result, even if the color forming layer 20 is partially worn, the hardened layer 12 exhibiting the same golden tone as the color forming layer 20 is exposed in the worn part, so that the wear of the color forming layer 20 is not noticeable. . Therefore, the aesthetic appearance of the antibacterial golden member can be maintained for a long period of time.

また、硬化層12は、傾斜構造を有していてもよい。すなわち、硬化層12において、非金属元素(炭素、窒素および酸素)の量は、基材10において発色層20を設ける面に垂直な方向に、基材10から離れるにしたがって増加していてもよい。具体的には段階的に増加することが好ましいが、これには限定されない。たとえば、増加、減少、増加などのように変化させてもよい。傾斜構造の場合は、膜応力を緩和でき、膜の剥がれを防止できる利点がある。 Further, the hardened layer 12 may have a sloped structure. That is, in the hardened layer 12, the amount of nonmetallic elements (carbon, nitrogen, and oxygen) may increase as the distance from the base material 10 increases in the direction perpendicular to the surface of the base material 10 on which the coloring layer 20 is provided. . Specifically, it is preferable to increase in steps, but the number is not limited to this. For example, it may be changed to increase, decrease, increase, etc. In the case of a tilted structure, there is an advantage that film stress can be relaxed and film peeling can be prevented.

また、硬化層12は、多層構造を有していてもよい。すなわち、硬化層12は、金属元素または非金属元素の種類や含有量が異なる化合物を含む層を2層以上積層した多層構造であってもよい。 Furthermore, the cured layer 12 may have a multilayer structure. That is, the hardened layer 12 may have a multilayer structure in which two or more layers containing compounds having different types and contents of metal elements or nonmetal elements are laminated.

密着層11および硬化層12の合計の厚さは、0.6μm以上2μm以下であることが好ましい。密着層11の厚さは、基材10と、密着層11上に設けられる層との密着性が担保できる限り、特に限定されない。一方、密着層11および硬化層12の合計の厚さが0.6μm以上であると、耐傷性が向上できるため好ましい。また、密着層11および硬化層12の合計の厚さが2μmを超えると、膜応力が増加し、膜の剥がれを引き起こす場合がある。 The total thickness of the adhesive layer 11 and the hardened layer 12 is preferably 0.6 μm or more and 2 μm or less. The thickness of the adhesive layer 11 is not particularly limited as long as the adhesiveness between the base material 10 and the layer provided on the adhesive layer 11 can be ensured. On the other hand, it is preferable that the total thickness of the adhesive layer 11 and the hardened layer 12 is 0.6 μm or more because scratch resistance can be improved. Furthermore, if the total thickness of the adhesive layer 11 and the hardened layer 12 exceeds 2 μm, the film stress increases and may cause peeling of the film.

発色層20は、AuおよびAgを含む合金を含む。上記合金中、Agが5.00at%以上17.40at%未満の量で含まれ、好ましくは8.06at%以上10.32at%以下の量で含まれる。なお、残部はAuである。発色層20を構成する合金にAgが上記特定の量で含まれているため、実施形態の抗菌性金色部材は抗菌性に優れるとともに、耐食性に優れる。また、耐傷性にも優れる。さらに、実施形態の抗菌性金色部材は淡い金色を示す。 The coloring layer 20 contains an alloy containing Au and Ag. In the above alloy, Ag is contained in an amount of 5.00 at% or more and less than 17.40 at%, preferably 8.06 at% or more and 10.32 at% or less. Note that the remainder is Au. Since the alloy constituting the coloring layer 20 contains Ag in the above-described specific amount, the antibacterial golden member of the embodiment has excellent antibacterial properties and excellent corrosion resistance. It also has excellent scratch resistance. Further, the antibacterial golden member of the embodiment exhibits a pale golden color.

また、発色層20は、傾斜構造を有していてもよい。すなわち、発色層20において、Agの量は、基材10において発色層20を設ける面に垂直な方向に、基材10から離れるにしたがって段階的に変化させてもよい。 Further, the coloring layer 20 may have a sloped structure. That is, in the coloring layer 20, the amount of Ag may be changed stepwise in a direction perpendicular to the surface of the base material 10 on which the coloring layer 20 is provided, as the distance from the base material 10 increases.

発色層20の厚さは、成膜性、美観および耐傷性の観点から、0.02μm以上0.04μm以下であることが好ましい。 The thickness of the coloring layer 20 is preferably 0.02 μm or more and 0.04 μm or less from the viewpoints of film formability, aesthetic appearance, and scratch resistance.

実施形態1の抗菌性金色部材の製造方法は、基材上に、発色層を設ける工程を含み、上記発色層は、AuおよびAgを含む合金を含み、上記合金中、Agが5.00at%以上17.40at%未満の量で含まれる。具体的には、実施形態1の抗菌性金色部材の製造方法は、基材上に、密着層を設ける工程、硬化層を設ける工程、および発色層を設ける工程を含み、これらの工程をこの順で行う。 The method for producing an antibacterial golden member of Embodiment 1 includes the step of providing a coloring layer on a base material, the coloring layer containing an alloy containing Au and Ag, and in the alloy, Ag is 5.00 at%. It is contained in an amount of at least 17.40 at%. Specifically, the method for manufacturing the antibacterial golden member of Embodiment 1 includes a step of providing an adhesive layer, a step of providing a hardening layer, and a step of providing a coloring layer on a base material, and these steps are performed in this order. Do it with

実施形態1の抗菌性金色部材の製造方法に用いる基材は、予め、その表面を有機溶剤などで洗浄および脱脂しておくことが好ましい。上記工程は、それぞれ乾式メッキ法で行うことが好ましい。乾式メッキ法としては、スパッタリング法、アーク法、イオンプレーティング法、イオンビーム等の物理的蒸着法(PVD)、化学的蒸着法(CVD)などが挙げられる。これらのうちで、スパッタリング法が特に好ましく用いられる。 The surface of the base material used in the method for producing the antibacterial golden member of Embodiment 1 is preferably cleaned and degreased with an organic solvent or the like in advance. It is preferable that each of the above steps is performed by a dry plating method. Examples of the dry plating method include a sputtering method, an arc method, an ion plating method, a physical vapor deposition method (PVD) such as an ion beam, and a chemical vapor deposition method (CVD). Among these, the sputtering method is particularly preferably used.

スパッタリング法は、真空に排気されたチャンバー内に不活性ガス(たとえばAr)を導入しながら、基材とターゲット間に直流または交流の高電圧を印加し、プラズマを発生させる。次いで、イオン化した不活性ガスをターゲットに衝突させて、はじき飛ばされたターゲット物質を基材に形成させる方法である。 In the sputtering method, a high DC or AC voltage is applied between a base material and a target while introducing an inert gas (for example, Ar) into an evacuated chamber to generate plasma. Next, the ionized inert gas is caused to collide with the target, and the repelled target material is formed on the base material.

たとえば、硬化層など非金属元素を含む層を形成する場合は、反応性スパッタリング法により行う。反応性スパッタリング法では、不活性ガスとともに微量の反応ガスを導入し、ターゲット構成原子と反応ガスを構成する非金属元素との反応化合物被膜(硬化層)を基材上に形成させることができる。反応ガスとして、メタンガス、アセチレンガス等の炭素原子含有ガス、窒素ガス等の窒素原子含有ガス、酸素ガス等の酸素原子含有ガスが用いられる。 For example, when forming a layer containing a nonmetallic element such as a hardened layer, a reactive sputtering method is used. In the reactive sputtering method, a trace amount of reactive gas is introduced together with an inert gas, and a reactive compound film (hardened layer) of target constituent atoms and nonmetallic elements constituting the reactive gas can be formed on the base material. As the reaction gas, a carbon atom-containing gas such as methane gas or acetylene gas, a nitrogen atom-containing gas such as nitrogen gas, or an oxygen atom-containing gas such as oxygen gas is used.

<実施形態2>
実施形態2の抗菌性金色部材においても、図1に示すように、基材10、密着層11、硬化層12、発色層13がこの順で積層されている。実施形態2の抗菌性金色部材は、実施形態1の抗菌性金色部材と比較して、基材10、密着層11、硬化層12は同じであり、発色層20が異なっている。
<Embodiment 2>
Also in the antibacterial golden member of Embodiment 2, as shown in FIG. 1, the base material 10, the adhesive layer 11, the cured layer 12, and the coloring layer 13 are laminated in this order. The antibacterial golden member of Embodiment 2 has the same base material 10, adhesive layer 11, and cured layer 12 as the antibacterial golden member of Embodiment 1, but differs in the coloring layer 20.

実施形態2の抗菌性金色部材において、発色層20は、Au、AgおよびPtを含む合金を含む。AgおよびPtを組み合わせて用いているため、より好ましい淡い金色を示す。 In the antibacterial golden member of Embodiment 2, the coloring layer 20 includes an alloy containing Au, Ag, and Pt. Since Ag and Pt are used in combination, it exhibits a more preferable pale gold color.

上記合金中、Agが5.00at%以上17.40at%未満の量で含まれ、好ましくは5.11at%以上12.14at%以下の量で含まれる。より好ましくは、上記合金中、Agが5.11at%以上12.14at%以下の量で含まれ、Ptが4.86at%以上6.69at%以下の量で含まれる。なお、残部はAuである。発色層20を構成する合金にAgおよびPtが上記特定の量で含まれているため、実施形態2の抗菌性金色部材は抗菌性に優れるとともに、耐食性および耐傷性に優れる。さらに、実施形態2の抗菌性金色部材は特に好ましい淡い金色を示す。すなわち、実施形態2の抗菌性金色部材によれば、Niを含んでいなくても、Niを用いたときに得られる特に好ましい淡い金色と同様の淡い金色を実現できる。 In the above alloy, Ag is contained in an amount of 5.00 at% or more and less than 17.40 at%, preferably 5.11 at% or more and 12.14 at% or less. More preferably, the above alloy contains Ag in an amount of 5.11 at% or more and 12.14 at% or less, and Pt in an amount of 4.86 at% or more and 6.69 at% or less. Note that the remainder is Au. Since the alloy constituting the coloring layer 20 contains Ag and Pt in the above-mentioned specific amounts, the antibacterial golden member of Embodiment 2 has excellent antibacterial properties, as well as excellent corrosion resistance and scratch resistance. Furthermore, the antibacterial golden member of Embodiment 2 exhibits a particularly favorable light golden color. That is, according to the antibacterial golden member of Embodiment 2, even if it does not contain Ni, it is possible to achieve a pale golden color similar to the particularly preferable pale golden color obtained when Ni is used.

また、実施形態2の抗菌性金色部材においても、発色層20は、傾斜構造を有していてもよい。実施形態2の抗菌性金色部材における傾斜構造についての詳細は、実施形態1の抗菌性金色部材で説明したものと同じである。さらに、実施形態2の抗菌性金色部材において、発色層20の厚さについても、実施形態1の抗菌性金色部材で説明したものと同じである。 Further, in the antibacterial golden member of Embodiment 2 as well, the coloring layer 20 may have a sloped structure. The details of the inclined structure in the antibacterial golden member of the second embodiment are the same as those described for the antibacterial golden member of the first embodiment. Furthermore, in the antibacterial golden member of Embodiment 2, the thickness of the coloring layer 20 is also the same as that described for the antibacterial golden member of Embodiment 1.

実施形態2の抗菌性金色部材の製造方法は、実施形態1の抗菌性金色部材の製造方法と同様である。 The method for manufacturing the antibacterial golden member of Embodiment 2 is the same as the method for manufacturing the antibacterial golden member of Embodiment 1.

<実施形態3>
実施形態3の抗菌性金色部材においても、図1に示すように、基材10、密着層11、硬化層12、発色層20がこの順で積層されている。実施形態3の抗菌性金色部材は、実施形態1や実施形態2の抗菌性金色部材と比較して、基材10、密着層11、硬化層12は同じであり、発色層20が異なっている。
<Embodiment 3>
Also in the antibacterial golden member of Embodiment 3, as shown in FIG. 1, the base material 10, the adhesive layer 11, the cured layer 12, and the coloring layer 20 are laminated in this order. The antibacterial golden member of Embodiment 3 has the same base material 10, adhesive layer 11, and cured layer 12 as compared to the antibacterial golden member of Embodiment 1 and Embodiment 2, but has a different coloring layer 20. .

実施形態3の抗菌性金色部材において、発色層20は、Au、AgおよびPdを含む合金を含む。AgおよびPdを組み合わせて用いているため、より好ましい淡い金色を示す。 In the antibacterial golden member of Embodiment 3, the coloring layer 20 contains an alloy containing Au, Ag, and Pd. Since Ag and Pd are used in combination, it exhibits a more desirable pale gold color.

上記合金中、Agが5.00at%以上17.40at%未満の量で含まれ、好ましくは5.12at%以上9.55at%以下の量で含まれる。より好ましくは、上記合金中、Agが5.12at%以上9.55at%以下の量で含まれ、Pdが4.11at%以上10.33at%以下の量で含まれる。なお、残部はAuである。発色層20を構成する合金にAgおよびPdが上記特定の量で含まれているため、実施形態3の抗菌性金色部材は抗菌性に優れるとともに、耐食性および耐傷性に優れる。さらに、実施形態3の抗菌性金色部材は特に好ましい淡い金色を示す。すなわち、実施形態3の抗菌性金色部材によれば、Niを含んでいなくても、Niを用いたときに得られる特に好ましい淡い金色と同様の淡い金色を実現できる。また、特に好ましくは、上記合金中、Agが5.28at%以上9.55at%以下の量で含まれ、Pdが4.11at%以上6.32at%以下の量で含まれる。なお、残部はAuである。発色層20を構成する合金にAgおよびPdが上記特定の量で含まれていると、特に好ましい淡い金色を示す。 In the above alloy, Ag is contained in an amount of 5.00 at% or more and less than 17.40 at%, preferably 5.12 at% or more and 9.55 at% or less. More preferably, the above alloy contains Ag in an amount of 5.12 at% or more and 9.55 at% or less, and Pd in an amount of 4.11 at% or more and 10.33 at% or less. Note that the remainder is Au. Since the alloy constituting the coloring layer 20 contains Ag and Pd in the above-mentioned specific amounts, the antibacterial golden member of Embodiment 3 has excellent antibacterial properties, as well as excellent corrosion resistance and scratch resistance. Furthermore, the antibacterial golden member of Embodiment 3 exhibits a particularly favorable light golden color. That is, according to the antibacterial golden member of Embodiment 3, even if it does not contain Ni, it is possible to achieve a pale golden color similar to the particularly preferable pale golden color obtained when Ni is used. Particularly preferably, the above alloy contains Ag in an amount of 5.28 at% or more and 9.55 at% or less, and Pd in an amount of 4.11 at% or more and 6.32 at% or less. Note that the remainder is Au. When the alloy constituting the coloring layer 20 contains Ag and Pd in the above-mentioned specific amounts, it exhibits a particularly preferable light golden color.

また、実施形態3の抗菌性金色部材においても、発色層20は、傾斜構造を有していてもよい。実施形態3の抗菌性金色部材における傾斜構造についての詳細は、実施形態1の抗菌性金色部材で説明したものと同じである。さらに、実施形態3の抗菌性金色部材において、発色層20の厚さについても、実施形態1の抗菌性金色部材で説明したものと同じである。 Further, in the antibacterial golden member of Embodiment 3 as well, the coloring layer 20 may have a sloped structure. The details of the inclined structure in the antibacterial golden member of Embodiment 3 are the same as those described for the antibacterial golden member of Embodiment 1. Furthermore, in the antibacterial golden member of the third embodiment, the thickness of the coloring layer 20 is also the same as that described for the antibacterial golden member of the first embodiment.

実施形態3の抗菌性金色部材の製造方法は、実施形態1の抗菌性金色部材の製造方法と同様である。 The method for manufacturing the antibacterial golden member of Embodiment 3 is the same as the method for manufacturing the antibacterial golden member of Embodiment 1.

<変形例>
実施形態2、3において、発色層20は、Au、AgおよびPtを含む合金またはAu、AgおよびPdを含む合金を含んでいる。ここで、PtまたはPdの代わりに、Rhを用いてもよい。Rhを用いる場合も、発色層20を構成する合金にAgが上記特定の量で含まれているため、抗菌性金色部材は抗菌性に優れるとともに、耐食性および耐傷性に優れる。また、発色層20を構成する合金にRhを含めると、より好ましい淡い金色を示す。
<Modified example>
In the second and third embodiments, the coloring layer 20 contains an alloy containing Au, Ag, and Pt, or an alloy containing Au, Ag, and Pd. Here, Rh may be used instead of Pt or Pd. Even when Rh is used, since the alloy constituting the coloring layer 20 contains Ag in the above-described specific amount, the antibacterial golden member has excellent antibacterial properties, as well as excellent corrosion resistance and scratch resistance. Further, when Rh is included in the alloy constituting the coloring layer 20, a more preferable pale gold color is exhibited.

図2は、実施形態の抗菌性金色部材の変形例を説明するための断面模式図である。図2に示すように、実施形態1~3において、発色層20は、多層構造であってもよい。すなわち、発色層20は、第1構成層21と第2構成層22とが交互に積層された多層構造であってもよい。ここで、第1構成層21は、上記AuおよびAgを含む合金を含む。また、第2構成層22は、TiおよびNbから選ばれる少なくとも1種の元素の窒化物、炭化物、炭窒化物、酸窒化物、炭窒酸化物または炭酸化物を含む。上記多層構造において、基材10側および最表面側は、第1構成層21である。多層構造の場合は、外傷で最表面の第1構成層21の一部が消失しても、最表面の第1構成層21と、露出した第2構成層22との色調差による違和感が生じにくくなる。このため、長期間使用しても美観を維持できるため好ましい。第1構成層21および第2構成層22の積層数は、合計で2層以上100層以下であることが好ましい。 FIG. 2 is a schematic cross-sectional view for explaining a modification of the antibacterial golden member of the embodiment. As shown in FIG. 2, in Embodiments 1 to 3, the coloring layer 20 may have a multilayer structure. That is, the coloring layer 20 may have a multilayer structure in which the first constituent layers 21 and the second constituent layers 22 are alternately stacked. Here, the first constituent layer 21 includes an alloy containing the above-mentioned Au and Ag. Further, the second constituent layer 22 includes a nitride, carbide, carbonitride, oxynitride, carbonitride oxide, or carbonide of at least one element selected from Ti and Nb. In the above multilayer structure, the first constituent layer 21 is on the base material 10 side and the outermost surface side. In the case of a multilayer structure, even if a part of the first constituent layer 21 on the outermost surface disappears due to trauma, a sense of discomfort may occur due to the difference in color tone between the first constituent layer 21 on the outermost surface and the exposed second constituent layer 22. It becomes difficult. Therefore, it is preferable because it can maintain its aesthetic appearance even after long-term use. The number of laminated layers of the first constituent layer 21 and the second constituent layer 22 is preferably 2 or more and 100 or less in total.

発色層20が多層構造である場合は、最表面の第1構成層21の厚さは、成膜性、美観および耐傷性の観点から、0.005μm以上0.04μm以下であることが好ましい。また、最表面以外の第1構成層21の厚さおよび第2構成層21の厚さは、成膜性、美観および耐傷性の観点から、それぞれ、0.005μm以上0.02μm以下であることが好ましい。 When the coloring layer 20 has a multilayer structure, the thickness of the first constituent layer 21 on the outermost surface is preferably 0.005 μm or more and 0.04 μm or less from the viewpoints of film formability, aesthetic appearance, and scratch resistance. In addition, the thickness of the first constituent layer 21 other than the outermost surface and the thickness of the second constituent layer 21 should be 0.005 μm or more and 0.02 μm or less, respectively, from the viewpoints of film formability, aesthetics, and scratch resistance. is preferred.

また、実施形態1~3において、密着層11または硬化層12を省略してもよい。すなわち、実施形態1~3の抗菌性金色部材は、基材10/発色層20、基材10/密着層11/発色層20、基材10/硬化層12/発色層20の構成を有していてもよい。 Furthermore, in Embodiments 1 to 3, the adhesive layer 11 or the hardened layer 12 may be omitted. That is, the antibacterial golden members of Embodiments 1 to 3 have the configurations of base material 10/coloring layer 20, base material 10/adhesive layer 11/coloring layer 20, and base material 10/cured layer 12/coloring layer 20. You can leave it there.

また、実施形態1~3において、硬化層12と発色層20との間に、さらに混合層を設けてもよい。混合層は、硬化層12に含まれる化合物と、発色層20に含まれる合金とを含む。混合層を設けると、硬化層12と発色層20との間の密着性を高められる。 Further, in Embodiments 1 to 3, a mixed layer may be further provided between the cured layer 12 and the coloring layer 20. The mixed layer contains the compound contained in the hardened layer 12 and the alloy contained in the coloring layer 20. By providing the mixed layer, the adhesion between the cured layer 12 and the coloring layer 20 can be improved.

なお、これら変形例についても、実施形態1と同様に、スパッタリング法(具体的には反応性スパッタリング法)により適宜製造できる。 Note that, similarly to the first embodiment, these modified examples can be appropriately manufactured by a sputtering method (specifically, a reactive sputtering method).

<時計>
実施形態の時計は、上記抗菌金色部材を含む。抗菌金色部材は、時計の構成部品であれば特に限定されず、ケース、リューズ、裏蓋、バンド、中留などが挙げられる。また、実施形態の時計は、光発電時計、熱発電時計、電波受信型自己修正時計、機械式時計、一般の電子式時計のいずれであってもよく、腕時計、掛け時計、置時計のいずれであってもよい。このような時計は、上記抗菌金色部材を用いて公知の方法により製造される。いずれの時計も、上述した発色層を有するため、抗菌性、耐食性および耐傷性に優れる。
<Clock>
The watch of the embodiment includes the antibacterial golden member. The antibacterial golden member is not particularly limited as long as it is a component of a watch, and examples thereof include a case, a crown, a back cover, a band, a clasp, and the like. Furthermore, the clock of the embodiment may be a photovoltaic clock, a thermoelectric clock, a radio wave receiving type self-correcting clock, a mechanical clock, or a general electronic clock, and may be a wristwatch, a wall clock, or a table clock. Good too. Such a watch is manufactured by a known method using the antibacterial golden member. Since both watches have the above-mentioned colored layer, they have excellent antibacterial properties, corrosion resistance, and scratch resistance.

なお、実施形態の抗菌金色部材は、時計以外に適用されてもよい。たとえば、ベルトの
バックル、指輪、ネックレス、ブレスレット、イヤリング、ペンダント、ブローチ、カフスボタン、ネクタイ止め、バッジ、メダル、眼鏡のフレーム、カメラのボディ、ドアノブなどに適用されてもよい。
Note that the antibacterial golden member of the embodiment may be applied to other than watches. For example, it may be applied to belt buckles, rings, necklaces, bracelets, earrings, pendants, brooches, cufflinks, tie stops, badges, medals, eyeglass frames, camera bodies, doorknobs, and the like.

以上より、本発明は以下に関する。
〔1〕 基材と、上記基材上に設けられた発色層とを有し、上記発色層は、AuおよびAgを含む合金を含み、上記合金中、Agが5.00at%以上17.40at%未満の量で含まれる、抗菌性金色部材。
上記〔1〕の抗菌性金色部材は、抗菌性および耐食性に優れる。
〔2〕 上記合金は、さらに、Pt、PdおよびRhから選ばれる少なくとも1種を含む、〔1〕に記載の抗菌性金色部材。
上記〔2〕の抗菌性金色部材は、より好ましい淡い金色を示す。
〔3〕 上記合金は、さらにPtを含み、上記合金中、Agが5.11at%以上12.14at%以下の量で含まれ、Ptが4.86at%以上6.69at%以下の量で含まれる、〔1〕に記載の抗菌性金色部材。
〔4〕 上記合金は、さらにPdを含み、上記合金中、Agが5.12at%以上9.55at%以下の量で含まれ、Pdが4.11at%以上10.33at%以下の量で含まれる、〔1〕に記載の抗菌性金色部材。
上記〔3〕、〔4〕の抗菌性金色部材は、特に好ましい淡い金色を示す。
〔5〕 上記基材と、上記発色層との間に、さらに密着層を有し、上記密着層は、TiおよびNbから選ばれる少なくとも1種を含む、〔1〕~〔4〕のいずれか1つに記載の抗菌性金色部材。
密着層を設けると、抗菌性金色部材の密着性の向上に寄与できる。
〔6〕 上記基材と、上記発色層との間に、さらに硬化層を有し、上記硬化層は
、TiおよびNbから選ばれる少なくとも1種の元素の窒化物、炭化物、炭窒化物、酸窒化物、炭窒酸化物または炭酸化物を含む、〔1〕~〔4〕のいずれか1つに記載の抗菌性金色部材。
硬化層を設けると、耐傷性の向上に寄与できる。長期にわたり抗菌性金色部材の美観を維持できる。
〔7〕 上記硬化層と、上記発色層との間に、さらに混合層を有し、上記混合層は、上記硬化層に含まれる上記窒化物、上記炭化物、上記炭窒化物、上記酸窒化物、上記炭窒酸化物または上記炭酸化物と、上記発色層に含まれる上記合金とを含む、〔6〕に記載の抗菌性金色部材。
混合層を設けると、硬化層と発色層との間の密着性を高められる。
〔8〕 上記発色層が、上記AuおよびAgを含む合金を含む第1構成層と、TiおよびNbから選ばれる少なくとも1種の元素の窒化物、炭化物、炭窒化物、酸窒化物、炭窒酸化物または炭酸化物を含む第2構成層とが、交互に積層された多層構造であり、上記多層構造は、基材側および最表面側が、上記第1構成層である、〔1〕~〔7〕のいずれか1つに記載の抗菌性金色部材。
発色層が多層構造であると、長期間使用しても美観を維持できるため好ましい。
〔9〕 〔1〕~〔8〕のいずれか1つに記載の抗菌性金色部材を含む時計。
上記〔10〕の時計は、抗菌性、耐食性および耐傷性に優れる。
Based on the above, the present invention relates to the following.
[1] It has a base material and a coloring layer provided on the base material, the coloring layer contains an alloy containing Au and Ag, and in the alloy, Ag is 5.00 at% or more and 17.40 at%. Antibacterial golden component contained in an amount of less than %.
The antibacterial golden member of [1] above has excellent antibacterial properties and corrosion resistance.
[2] The antibacterial golden member according to [1], wherein the alloy further contains at least one selected from Pt, Pd, and Rh.
The antibacterial golden member of [2] above exhibits a more preferable pale golden color.
[3] The above alloy further contains Pt, in which Ag is contained in an amount of 5.11 at% or more and 12.14 at% or less, and Pt is contained in an amount of 4.86 at% or more and 6.69 at% or less. The antibacterial golden member according to [1].
[4] The above alloy further contains Pd, in which Ag is contained in an amount of 5.12 at% or more and 9.55 at% or less, and Pd is contained in an amount of 4.11 at% or more and 10.33 at% or less. The antibacterial golden member according to [1].
The antibacterial golden members of [3] and [4] above exhibit a particularly preferable pale golden color.
[5] Any one of [1] to [4], further comprising an adhesive layer between the base material and the coloring layer, and the adhesive layer contains at least one selected from Ti and Nb. The antibacterial golden member according to item 1.
Providing an adhesive layer can contribute to improving the adhesiveness of the antibacterial golden member.
[6] A hardened layer is further provided between the base material and the coloring layer, and the hardened layer is made of a nitride, carbide, carbonitride, or acid of at least one element selected from Ti and Nb. The antibacterial golden member according to any one of [1] to [4], which contains a nitride, a carbonitoxide, or a carbonate.
Providing a hardened layer can contribute to improving scratch resistance. The beauty of antibacterial golden components can be maintained for a long period of time.
[7] A mixed layer is further provided between the hardened layer and the coloring layer, and the mixed layer contains the nitride, the carbide, the carbonitride, and the oxynitride contained in the hardened layer. , the antibacterial golden member according to [6], comprising the carbonitride oxide or the carbonate, and the alloy contained in the coloring layer.
Providing a mixed layer can improve the adhesion between the cured layer and the coloring layer.
[8] The coloring layer includes a first constituent layer containing the alloy containing Au and Ag, and a nitride, carbide, carbonitride, oxynitride, carbonitride of at least one element selected from Ti and Nb. A multilayer structure in which second constituent layers containing an oxide or carbonate are alternately laminated, and the multilayer structure has the first constituent layer on the base material side and the outermost surface side, [1] to [ 7]. The antibacterial golden member according to any one of [7].
It is preferable that the coloring layer has a multilayer structure because it can maintain its beautiful appearance even after long-term use.
[9] A watch comprising the antibacterial golden member according to any one of [1] to [8].
The watch [10] above has excellent antibacterial properties, corrosion resistance, and scratch resistance.

[実施例]
以下実施例に基づいて、本発明をさらに具体的に説明するが、本発明はこれらの実施例に限定されるものではない。
[Example]
The present invention will be described in more detail below based on Examples, but the present invention is not limited to these Examples.

[実施例1-1]
実施例1-1では、図1に示す膜構造(基材/Ti密着層/TiN硬化層/発色層(AuAg)を有する抗菌金色部材を作製した。
本実施例では、ターゲットは、Ti密着層、TiN硬化層を形成するためのTiターゲットと、発色層を形成するための任意組成Au合金ターゲットとを用いた。基材は、JIS H 4600 2種のTi板を用いた。
成膜の準備として、基材をチャンバー内にセットし、チャンバー内の圧力が4.0×10-3Paになるまで真空引きした後、圧力が3.0×10-1Paで一定になるようにArを30sccm導入し、Arプラズマを発生させた。成膜する際は、まず、同一圧力下のArプラズマ雰囲気中で、Tiターゲットを用いてTi密着層を成膜した。次に、N2を6sccm追加導入し、Ar、N2プラズマ雰囲気中で、TiN硬化層を成膜した。このとき、Ti密着層とTiN硬化層との総厚が0.6μm以上になるように成膜した。続いて、AuAg合金ターゲットを用いて、Arプラズマ雰囲気中で、発色層を成膜した。このとき、AuAg合金層が0.04μmの膜厚になるように成膜した。
[Example 1-1]
In Example 1-1, an antibacterial golden member having the membrane structure shown in FIG. 1 (base material/Ti adhesion layer/TiN hardened layer/coloring layer (AuAg)) was produced.
In this example, the targets used were a Ti target for forming a Ti adhesion layer and a TiN hardened layer, and an arbitrary composition Au alloy target for forming a coloring layer. A JIS H 4600 2 type Ti plate was used as the base material.
In preparation for film formation, the base material is set in a chamber, the chamber is evacuated until the pressure in the chamber reaches 4.0 x 10 -3 Pa, and then the pressure becomes constant at 3.0 x 10 -1 Pa. Ar was introduced at 30 sccm to generate Ar plasma. When forming a film, first, a Ti adhesion layer was formed using a Ti target in an Ar plasma atmosphere under the same pressure. Next, 6 sccm of N 2 was additionally introduced to form a TiN hardened layer in an Ar and N 2 plasma atmosphere. At this time, the Ti adhesion layer and the TiN hardened layer were formed so that the total thickness was 0.6 μm or more. Subsequently, a coloring layer was formed using an AuAg alloy target in an Ar plasma atmosphere. At this time, the AuAg alloy layer was formed to have a thickness of 0.04 μm.

[実施例1-2~1-3]
実施例1-2~1-3では、組成が異なるAuAg合金ターゲットを用いた以外は、実施例1-1と同様にして、抗菌金色部材を作製した。
[Example 1-2 to 1-3]
In Examples 1-2 to 1-3, antibacterial golden members were produced in the same manner as in Example 1-1, except that AuAg alloy targets with different compositions were used.

[実施例2-1~2-14]
実施例2-1~2-14では、組成が異なるAuPtAg合金ターゲットを用いた以外は、実施例1-1と同様にして、抗菌金色部材を作製した。
[Examples 2-1 to 2-14]
In Examples 2-1 to 2-14, antibacterial golden members were produced in the same manner as in Example 1-1, except that AuPtAg alloy targets with different compositions were used.

[比較例2-1~2-8]
比較例2-1~2-8では、組成が異なるAuPtAg合金ターゲットを用いた以外は、実施例1-1と同様にして、金色部材を作製した。
[Comparative Examples 2-1 to 2-8]
In Comparative Examples 2-1 to 2-8, golden members were produced in the same manner as in Example 1-1, except that AuPtAg alloy targets with different compositions were used.

[実施例3-1~3-12]
実施例3-1~3-12では、組成が異なるAuPdAg合金ターゲットを用いた以外は、実施例1-1と同様にして、抗菌金色部材を作製した。
[Examples 3-1 to 3-12]
In Examples 3-1 to 3-12, antibacterial golden members were produced in the same manner as in Example 1-1, except that AuPdAg alloy targets with different compositions were used.

[比較例3-1~3-3]
比較例3-1~3-3では、組成が異なるAuPdAg合金ターゲットを用いた以外は、実施例1-1と同様にして、金色部材を作製した。
[Comparative Examples 3-1 to 3-3]
In Comparative Examples 3-1 to 3-3, golden members were produced in the same manner as in Example 1-1, except that AuPdAg alloy targets with different compositions were used.

実施例1-1~1-3で得られた抗菌金色部材について、発色層の組成、色調、耐傷性、耐食性、抗菌性の測定結果を、表1に示す。また、実施例2-1~2-14で得られた抗菌金色部材および比較例2-1~2-8で得られた金色部材について、発色層の組成、色調、耐傷性、耐食性、抗菌性の測定結果を、表2に示す。また、実施例3-1~3-12で得られた抗菌金色部材および比較例3-1~3-3で得られた金色部材について、発色層の組成、色調、耐傷性、耐食性、抗菌性の測定結果を、表3に示す。なお、発色層の組成は、測定の際にwt%で得られた値をat%に変換した。 Table 1 shows the measurement results of the composition, color tone, scratch resistance, corrosion resistance, and antibacterial properties of the coloring layer for the antibacterial golden members obtained in Examples 1-1 to 1-3. In addition, regarding the antibacterial golden members obtained in Examples 2-1 to 2-14 and the golden members obtained in Comparative Examples 2-1 to 2-8, the composition of the coloring layer, color tone, scratch resistance, corrosion resistance, antibacterial property The measurement results are shown in Table 2. In addition, regarding the antibacterial golden members obtained in Examples 3-1 to 3-12 and the golden members obtained in Comparative Examples 3-1 to 3-3, the composition of the coloring layer, color tone, scratch resistance, corrosion resistance, antibacterial property The measurement results are shown in Table 3. In addition, for the composition of the coloring layer, the value obtained in wt% during measurement was converted into at%.

AuAg合金を使用した実施例の外観色調は、Lab色空間表示で、L*:91.94~92.07、a*:-0.63~-0.60、b*:38.30~38.71であり、淡い金色ではあったが、緑みの金色を呈した。一方で、AuPtAg合金を使用した実施例の外観色調は、L*:84.46~87.61、a*:1.95~4.31、b*:22.48~24.67であった。また、AuPdAg合金を使用した実施例の外観色調は、L*:82.48~86.61、a*:2.70~3.81、b*:12.52~21.98であった。双方ともに好ましい淡い金色を呈した。 The external color tone of the example using the AuAg alloy is expressed in Lab color space as L * : 91.94 to 92.07, a * : -0.63 to -0.60, b * : 38.30 to 38. .71, and although it was a pale gold color, it had a greenish gold color. On the other hand, the external color tones of Examples using AuPtAg alloy were L * : 84.46 to 87.61, a * : 1.95 to 4.31, and b * : 22.48 to 24.67. . Further, the external color tone of the examples using AuPdAg alloy was L * : 82.48 to 86.61, a * : 2.70 to 3.81, and b * : 12.52 to 21.98. Both exhibited a pleasing pale gold color.

AuPtAg合金、AuPdAg合金を使用したサンプルについて、JIS Z 2801:2012に準ずる抗菌性試験を実施した。AuをベースとしたAgを含む合金において、Agが5.00at%以上を含む場合に抗菌性が発現することが示唆された。
また、CASS試験、人工汗試験の結果、Agが17.40at%未満の場合、耐食性が認められると考えられる。よって、Agの含有量が5.00at%以上、17.40at%未満の場合、抗菌性および耐食性の性質を両立させることができると考えられる。耐傷性試験については、合金組成によらず合格であった。
An antibacterial test according to JIS Z 2801:2012 was conducted on samples using AuPtAg alloy and AuPdAg alloy. It was suggested that an alloy containing Ag based on Au exhibits antibacterial properties when it contains 5.00 at% or more of Ag.
Further, as a result of the CASS test and the artificial sweat test, when Ag is less than 17.40 at%, corrosion resistance is considered to be observed. Therefore, it is considered that when the Ag content is 5.00 at% or more and less than 17.40 at%, both antibacterial and corrosion resistant properties can be achieved. The scratch resistance test was passed regardless of the alloy composition.

<測定方法>
[元素量]
発色層中の各元素量は、EDX(エネルギー分散型X線分光法)により測定した。なお、入射電子の加速電圧を5kVとし、試料から放出された特性X線を半導体検出器で検出してエネルギー分光し、得られたスペクトルのエネルギー値から試料の定量分析を行った。また、各元素量の定量値を得るにあたり、試料による入射電子の散乱や、試料から放出されたX線の試料内での吸収や蛍光励起が、標準試料と未知試料とで異なることを考慮して補正を行った(ZAF補正法)。
<Measurement method>
[Element amount]
The amount of each element in the coloring layer was measured by EDX (energy dispersive X-ray spectroscopy). Incidentally, the accelerating voltage of the incident electrons was set to 5 kV, characteristic X-rays emitted from the sample were detected with a semiconductor detector, energy spectroscopy was performed, and quantitative analysis of the sample was performed from the energy value of the obtained spectrum. In addition, when obtaining quantitative values for the amounts of each element, we take into account the fact that the scattering of incident electrons by the sample, the absorption of X-rays emitted from the sample, and the fluorescence excitation within the sample differ between the standard sample and the unknown sample. Correction was performed (ZAF correction method).

[膜厚]
発色層の膜厚ならびに密着層および硬化層の合計の膜厚は、蛍光X線膜厚計SFT9400(SII製)で測定した。
[Film thickness]
The thickness of the coloring layer and the total thickness of the adhesive layer and the cured layer were measured using a fluorescent X-ray film thickness meter SFT9400 (manufactured by SII).

[色調]
抗菌金色部材の色調は、KONICA MINOLTA製のSpectra Magic NX(光源D65)を用いてL***色度図によるL***を測定して評価した。
ここで、L*は国際照明委員会(CIE)のCIE 1976(L***)色空間における明度指数であり、a*、b*はクロマテイクネス指数を表わす。
[Color tone]
The color tone of the antibacterial golden member was evaluated by measuring L * a * b * according to the L * a * b * chromaticity diagram using Spectra Magic NX (light source D65) manufactured by KONICA MINOLTA.
Here, L * is a lightness index in the CIE 1976 (L * a * b * ) color space of the Commission Internationale de l'Eclairage (CIE), and a * and b * represent chromatakeness indexes.

[耐傷性]
耐傷性は、日常生活で想定される比較的強い摩擦に対する、装飾品の傷付きにくさを表す特性である。砂消しゴムの未使用面を、実施例で得られた抗菌金色部材または比較例で得られた金色部材の表面に、所定の荷重で押し当て、当該未使用面を所定のストロークで所定の回数擦り付け、その後、当該表面に形成された傷の程度を目視で観察し、基準となる限度サンプルと比較することで耐傷性を評価した。限度サンプルよりも傷が目立たない場合は〇とし、傷が目立つ場合は×とした。
[Scratch resistance]
Scratch resistance is a property that indicates how resistant an ornament is to scratches due to the relatively strong friction expected in daily life. Press the unused side of the sand eraser against the surface of the antibacterial golden member obtained in the example or the golden member obtained in the comparative example with a predetermined load, and rub the unused side with a predetermined stroke a predetermined number of times. Thereafter, the degree of scratches formed on the surface was visually observed, and the scratch resistance was evaluated by comparing with a reference limit sample. If the scratches were less noticeable than the limit sample, it was marked as ○, and when the scratches were more noticeable, it was marked as ×.

[耐食性]
抗菌金色部材の耐食性は、CASS試験および人工汗試験により評価した。CASS試験はJIS-H 8502に準拠して、酢酸酸性の塩化ナトリウム溶液に塩化第二銅を添加した溶液を噴霧した雰囲気に48時間設置し、発色層の剥離および変色を観察し耐食性の評価とした。剥離および変色が見られなかった場合を〇とし、孔食、剥離、変色等の異常が見られた場合を×とした。
[Corrosion resistance]
The corrosion resistance of the antibacterial golden member was evaluated by a CASS test and an artificial sweat test. The CASS test is conducted in accordance with JIS-H 8502 by placing the test in an atmosphere in which a solution of cupric chloride added to an acetic acidic sodium chloride solution is sprayed for 48 hours, and observing peeling and discoloration of the colored layer to evaluate corrosion resistance. did. A case where no peeling or discoloration was observed was marked as ○, and a case where abnormalities such as pitting corrosion, peeling, or discoloration were observed was marked as ×.

人工汗試験はISO12870に準拠して、塩化ナトリウムと乳酸を混ぜた液(人工汗)を55℃で48時間曝気させた雰囲気に設置し、発色層の変色を観察し耐食性の評価とした。変色が見られなかった場合を〇とし、変色が見られた場合を×とした。 The artificial sweat test was conducted in accordance with ISO 12870 by placing a mixture of sodium chloride and lactic acid (artificial sweat) in an aerated atmosphere at 55°C for 48 hours, and observing the discoloration of the colored layer to evaluate corrosion resistance. The case where no discoloration was observed was marked as ○, and the case where discoloration was observed was marked as ×.

[抗菌性]
抗菌性試験は「JIS Z 801:2012 抗菌加工-抗菌性試験方法・抗菌効果」に準じて行った。
[Antibacterial]
The antibacterial test was conducted in accordance with "JIS Z 801:2012 Antibacterial processing - Antibacterial test method/Antibacterial effect".

1)試験片の準備
抗菌加工試験片(試料、すなわち、実施例で作製した抗菌金色部材および比較例で作製した金色部材)はエタノール洗浄にて清浄化を行ない、十分風乾させた後、試験に用いた。被覆フィルムおよび無加工試験片はポリエチレンフィルムを裁断しEOG滅菌して用いた。
1) Preparation of test pieces The antibacterial processed test pieces (sample, i.e., the antibacterial golden member prepared in the example and the golden member prepared in the comparative example) were cleaned with ethanol, thoroughly air-dried, and then tested. Using. The covering film and the unprocessed test piece were used by cutting a polyethylene film and sterilizing it by EOG.

2)試験菌液の調製
試験菌(黄色ぶどう球菌(NBRC12732)および大腸菌(NBRC3972))は、保存菌を普通寒天培地に接種して培養し、翌日継代してから約18~20時間後に1/500の普通ブイヨン液に懸濁して調製した。
2) Preparation of test bacteria solution The test bacteria (Staphylococcus aureus (NBRC12732) and Escherichia coli (NBRC3972)) were cultured by inoculating the preserved bacteria on an ordinary agar medium, and about 18 to 20 hours after passage on the next day. /500 ordinary bouillon solution.

3)試験菌の接種および培養
試験片に試験菌液0.2mLを接種し、フィルム(20×40mmの長方形)で覆った後、35℃、相対湿度90%以上で24時間培養した。
3) Inoculation and cultivation of test bacteria A test piece was inoculated with 0.2 mL of test bacteria solution, covered with a film (20 x 40 mm rectangle), and then cultured at 35°C and a relative humidity of 90% or higher for 24 hours.

4)試験菌の洗い出しと生菌数の測定
試験菌液を接種した直後の無加工試験片について、SCDLP培地(抗菌剤不活化培地)10mLを注いで菌を洗い出し、寒天平板培養法で生菌数を調べた。また、24時間培養後の無加工試験片および抗菌加工試験片についても同様に生菌数を測定した。生菌数の測定は寒天平板培養法(寒天平板混釈法)で行った。洗い出し液およびその10倍希釈系列希釈液をシャーレに分注し、標準寒天培地を加えて混合した。寒天が固まった後、シャーレを倒置し、35℃で40~48時間培養した。培養後、生菌数(コロニー)を計測し、菌数の算出を行なった。
4) Washing out the test bacteria and measuring the number of viable bacteria Immediately after inoculating the test bacteria solution, 10 mL of SCDLP medium (antibacterial agent inactivation medium) was poured into the unprocessed test piece to wash out the bacteria, and the viable bacteria were cultured on an agar plate. I looked up the numbers. In addition, the number of viable bacteria was similarly measured for the unprocessed test piece and the antibacterial-treated test piece after 24 hours of culture. The number of viable bacteria was measured by the agar plate culture method (agar plate pour method). The washout solution and its 10-fold dilution series were dispensed into petri dishes, and a standard agar medium was added and mixed. After the agar solidified, the petri dish was inverted and cultured at 35°C for 40 to 48 hours. After culturing, the number of viable bacteria (colonies) was measured and the number of bacteria was calculated.

5)試験成立条件の判定
1.無加工試験片の接種直後の生菌数の対数値について、次式が成立する。
(Lmax-Lmin)/Lmean≦0.2
Lmax:生菌数対数値の最大値
Lmin:生菌数対数値の最小値
Lmean:3個の試験片の生菌数対数値の平均値
2.無加工試験片の接種直後の生菌数平均は6.2×103~2.5×104個/cm2の範囲内である。
3.無加工試験片にフィルムを用いた場合は、24時間後の生菌数の3個の値がいずれも6.2×102個/cm2以上である。
上記判定を行ったところ、試験成立条件を満たしていた。
5) Determination of conditions for test establishment 1. The following formula holds true for the logarithm of the number of viable bacteria immediately after inoculation of the unprocessed test piece.
(Lmax-Lmin)/Lmean≦0.2
Lmax: Maximum value of the log value of the number of viable bacteria Lmin: Minimum value of the log value of the number of viable bacteria Lmean: Average value of the log value of the number of viable bacteria for the three test pieces 2. The average number of viable bacteria immediately after inoculation of the unprocessed test piece was within the range of 6.2×10 3 to 2.5×10 4 cells/cm 2 .
3. When a film is used as an unprocessed test piece, all three values of the number of viable bacteria after 24 hours are 6.2×10 2 cells/cm 2 or more.
When the above judgment was made, it was found that the conditions for establishing the test were satisfied.

6)抗菌活性値の計算および判定
抗菌活性値:R=(Ut-U0)-(At-U0)=Ut-At
U0:無加工試験片の接種直後の生菌数の対数値の平均値
Ut:無加工試験片の24時間後の生菌数の対数値の平均値
At:抗菌加工試験片の24時間後の生菌数の対数値の平均値
「抗菌効果を有する」とは、製品上の24時間後の試験菌の生菌数が無加工製品上の生菌数の1%以下(抗菌活性値2.0以上)となることと定義されている。判定基準は、抗菌活性値2.0以上の場合を○とし、抗菌活性値2.0未満の場合を×とする。
6) Calculation and determination of antibacterial activity value Antibacterial activity value: R = (Ut-U0) - (At-U0) = Ut-At
U0: Average value of the logarithm of the number of viable bacteria immediately after inoculation of the untreated test piece Ut: Average value of the logarithm of the number of viable bacteria 24 hours after inoculation of the untreated test piece At: 24 hours after the antibacterial treatment test piece Average value of the logarithm value of the number of viable bacteria "Having an antibacterial effect" means that the number of viable bacteria on the product after 24 hours is 1% or less of the number of viable bacteria on the unprocessed product (antibacterial activity value 2. 0 or more). The judgment criteria are: ○ if the antibacterial activity value is 2.0 or more, and × if the antibacterial activity value is less than 2.0.

100 抗菌金色部材
10 基材
11 密着層
12 硬化層
20 発色層
21 第1構成層
22 第2構成層
100 Antibacterial golden member 10 Base material 11 Adhesion layer 12 Cured layer 20 Coloring layer 21 First constituent layer 22 Second constituent layer

Claims (6)

基材と、前記基材上に設けられた発色層とを有し、
前記発色層は、AuおよびAgを含む合金を含み、Niを含まず、
前記合金は、さらにPtを含み、前記合金中、Agが5.11at%以上12.14at%以下の量で含まれ、Ptが4.86at%以上6.69at%以下の量で含まれ、残部はAuであるか、または、
前記合金は、さらにPdを含み、前記合金中、Agが5.12at%以上9.55at%以下の量で含まれ、Pdが4.11at%以上10.33at%以下の量で含まれ、残部はAuである、
抗菌性金色部材。
comprising a base material and a coloring layer provided on the base material,
The coloring layer contains an alloy containing Au and Ag, and does not contain Ni.
The alloy further contains Pt, in which Ag is contained in an amount of 5.11 at% or more and 12.14 at% or less , and Pt is contained in an amount of 4.86 at% or more and 6.69 at% or less. , the remainder is Au, or
The alloy further contains Pd, in which Ag is contained in an amount of 5.12 at% or more and 9.55 at% or less, Pd is contained in an amount of 4.11 at% or more and 10.33 at% or less, and the balance is is Au ,
Antibacterial golden material.
前記基材と、前記発色層との間に、さらに密着層を有し、
前記密着層は、TiおよびNbから選ばれる少なくとも1種を含む、
請求項1に記載の抗菌性金色部材。
further comprising an adhesive layer between the base material and the coloring layer,
The adhesive layer contains at least one selected from Ti and Nb.
The antibacterial golden member according to claim 1 .
前記基材と、前記発色層との間に、さらに硬化層を有し、
前記硬化層は、TiおよびNbから選ばれる少なくとも1種の元素の窒化物、炭化物、炭窒化物、酸窒化物、炭窒酸化物または炭酸化物を含む、
請求項1に記載の抗菌性金色部材。
Further comprising a hardening layer between the base material and the coloring layer,
The hardened layer contains a nitride, carbide, carbonitride, oxynitride, carbonitride oxide, or carbonide of at least one element selected from Ti and Nb.
The antibacterial golden member according to claim 1 .
前記硬化層と、前記発色層との間に、さらに混合層を有し、
前記混合層は、前記硬化層に含まれる化合物と、前記発色層に含まれる前記合金とを含む、
請求項に記載の抗菌性金色部材。
Further comprising a mixed layer between the cured layer and the coloring layer,
The mixed layer contains the compound contained in the hardened layer and the alloy contained in the coloring layer.
The antibacterial golden member according to claim 3 .
前記発色層が、前記AuおよびAgを含む合金を含む第1構成層と、TiおよびNbから選ばれる少なくとも1種の元素の窒化物、炭化物、炭窒化物、酸窒化物、炭窒酸化物または炭酸化物を含む第2構成層とが、交互に積層された多層構造であり、
前記多層構造は、基材側および最表面側が、前記第1構成層である、
請求項1~のいずれか1項に記載の抗菌性金色部材。
The coloring layer includes a first constituent layer containing the alloy containing Au and Ag, and a nitride, carbide, carbonitride, oxynitride, carbonitride oxide, or at least one element selected from Ti and Nb. A multilayer structure in which second constituent layers containing carbonates are alternately stacked,
In the multilayer structure, the base material side and the outermost surface side are the first constituent layers,
The antibacterial golden member according to any one of claims 1 to 4 .
請求項1~5のいずれか1項に記載の抗菌性金色部材を含む時計。
A timepiece comprising the antibacterial golden member according to any one of claims 1 to 5.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000336470A (en) 1999-03-25 2000-12-05 Maruman Optical Kk Production of article having antibacterial characteristic, spectacles having antibacterial characteristic, wrist-watch having antibacterial characteristic, ornament having antibacterial characteristic and daily sundry having antibacterial characteristic
JP2001515495A (en) 1997-03-17 2001-09-18 ウエステイム バイオメディカル コーポレイション Indicative antimicrobial coating and wound dressing
JP2004505651A (en) 1999-04-13 2004-02-26 エレファント デンタル ベー.フェー. Biomedical aids or implants
JP2007084867A (en) 2005-09-21 2007-04-05 Citizen Watch Co Ltd Ornament
WO2008041562A1 (en) 2006-09-25 2008-04-10 Citizen Holdings Co., Ltd. Decorative part and process for producing the same
US20090087634A1 (en) 2005-03-31 2009-04-02 Citizen Holdings Co., Ltd. Golden Ornament and Process for Producing the Same
JP2009222603A (en) 2008-03-17 2009-10-01 Seiko Epson Corp Manufacturing method of ornament, ornament, and timepiece

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001515495A (en) 1997-03-17 2001-09-18 ウエステイム バイオメディカル コーポレイション Indicative antimicrobial coating and wound dressing
JP2000336470A (en) 1999-03-25 2000-12-05 Maruman Optical Kk Production of article having antibacterial characteristic, spectacles having antibacterial characteristic, wrist-watch having antibacterial characteristic, ornament having antibacterial characteristic and daily sundry having antibacterial characteristic
JP2004505651A (en) 1999-04-13 2004-02-26 エレファント デンタル ベー.フェー. Biomedical aids or implants
US20090087634A1 (en) 2005-03-31 2009-04-02 Citizen Holdings Co., Ltd. Golden Ornament and Process for Producing the Same
JP2007084867A (en) 2005-09-21 2007-04-05 Citizen Watch Co Ltd Ornament
WO2008041562A1 (en) 2006-09-25 2008-04-10 Citizen Holdings Co., Ltd. Decorative part and process for producing the same
US20100086756A1 (en) 2006-09-25 2010-04-08 Citizen Holdings Co., Ltd. Decorative Part and Process for Producing the Same
JP2009222603A (en) 2008-03-17 2009-10-01 Seiko Epson Corp Manufacturing method of ornament, ornament, and timepiece

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