JP3462338B2 - Brightness adjuster for semi-gloss silver plating - Google Patents
Brightness adjuster for semi-gloss silver platingInfo
- Publication number
- JP3462338B2 JP3462338B2 JP06431796A JP6431796A JP3462338B2 JP 3462338 B2 JP3462338 B2 JP 3462338B2 JP 06431796 A JP06431796 A JP 06431796A JP 6431796 A JP6431796 A JP 6431796A JP 3462338 B2 JP3462338 B2 JP 3462338B2
- Authority
- JP
- Japan
- Prior art keywords
- silver
- silver plating
- adjusting agent
- plating bath
- gloss
- 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.)
- Expired - Lifetime
Links
- 229910052709 silver Inorganic materials 0.000 title claims description 45
- 239000004332 silver Substances 0.000 title claims description 45
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims description 44
- 238000007747 plating Methods 0.000 title claims description 36
- 239000003795 chemical substances by application Substances 0.000 claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 239000008139 complexing agent Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 4
- ZOCLAPYLSUCOGI-UHFFFAOYSA-M potassium hydrosulfide Chemical compound [SH-].[K+] ZOCLAPYLSUCOGI-UHFFFAOYSA-M 0.000 claims description 3
- 229940100890 silver compound Drugs 0.000 claims description 3
- 150000003379 silver compounds Chemical class 0.000 claims description 3
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 claims description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 150000001469 hydantoins Chemical class 0.000 claims description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 2
- 150000007522 mineralic acids Chemical class 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- RHYBFKMFHLPQPH-UHFFFAOYSA-N N-methylhydantoin Chemical compound CN1CC(=O)NC1=O RHYBFKMFHLPQPH-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RFTORHYUCZJHDO-UHFFFAOYSA-N 1,3-dimethylimidazolidine-2,4-dione Chemical compound CN1CC(=O)N(C)C1=O RFTORHYUCZJHDO-UHFFFAOYSA-N 0.000 description 1
- YIROYDNZEPTFOL-UHFFFAOYSA-N 5,5-Dimethylhydantoin Chemical compound CC1(C)NC(=O)NC1=O YIROYDNZEPTFOL-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- CXOFVDLJLONNDW-UHFFFAOYSA-N Phenytoin Chemical compound N1C(=O)NC(=O)C1(C=1C=CC=CC=1)C1=CC=CC=C1 CXOFVDLJLONNDW-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229940026189 antimony potassium tartrate Drugs 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- WBTCZEPSIIFINA-MSFWTACDSA-J dipotassium;antimony(3+);(2r,3r)-2,3-dioxidobutanedioate;trihydrate Chemical compound O.O.O.[K+].[K+].[Sb+3].[Sb+3].[O-]C(=O)[C@H]([O-])[C@@H]([O-])C([O-])=O.[O-]C(=O)[C@H]([O-])[C@@H]([O-])C([O-])=O WBTCZEPSIIFINA-MSFWTACDSA-J 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical compound O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 description 1
- 229940091173 hydantoin Drugs 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- CVHZOJJKTDOEJC-UHFFFAOYSA-N saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 description 1
- 229940081974 saccharin Drugs 0.000 description 1
- 235000019204 saccharin Nutrition 0.000 description 1
- 239000000901 saccharin and its Na,K and Ca salt Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- CQLFBEKRDQMJLZ-UHFFFAOYSA-M silver acetate Chemical compound [Ag+].CC([O-])=O CQLFBEKRDQMJLZ-UHFFFAOYSA-M 0.000 description 1
- 229940071536 silver acetate Drugs 0.000 description 1
- LFAGQMCIGQNPJG-UHFFFAOYSA-N silver cyanide Chemical compound [Ag+].N#[C-] LFAGQMCIGQNPJG-UHFFFAOYSA-N 0.000 description 1
- 229940098221 silver cyanide Drugs 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は半光沢銀めっき用の
光沢度調整剤に関するものである。TECHNICAL FIELD The present invention relates to a gloss adjusting agent for semi-glossy silver plating.
【０００２】[0002]
【従来の技術】銀めっきは、古くから装飾用、洋食器具
等に用いられ、そしてまたその優れた電気的特性のため
に電子工業分野においても広く利用されている。2. Description of the Related Art Silver plating has been used for a long time in ornaments, western food appliances and the like, and has also been widely used in the electronic industry field because of its excellent electrical characteristics.
【０００３】そして、銀めっきに用いられる銀めっき浴
としては、ほとんどがシアン化銀を含んだシアン浴であ
ったが、最近では、作業安全上或いは排水処理上の要請
から非シアン系の銀めっき浴も各種提案されている。電
子工業分野での銀めっき浴には、適度な平滑性を得るた
めに光沢度調整剤が添加される〔日本プレーティング協
会編実用めっき（Ｉ）増補版（昭和６０年２月発行）の
第４５０頁参照〕。一般には、光沢度０．３〜０．８
（ＧＡＭ光沢計）が適当と言われている。例えば、銀め
っき浴に用いられるこの種の光沢度調整剤としては、一
般にチオール系の有機光沢度調整剤や、セレン及びアン
チモンといった無機光沢度調整剤等がある。Most of the silver plating baths used for silver plating were cyanide baths containing silver cyanide, but recently, non-cyan type silver plating is required due to work safety or wastewater treatment. Various baths have been proposed. A gloss adjusting agent is added to a silver plating bath in the electronics industry in order to obtain appropriate smoothness [Practical Plating (I) Supplemental Edition (edited by February 1985) edited by Japan Plating Association] See page 450]. Generally, glossiness of 0.3 to 0.8
(GAM gloss meter) is said to be suitable. For example, as this type of glossiness adjusting agent used in a silver plating bath, there are generally thiol-based organic glossiness adjusting agents and inorganic glossiness adjusting agents such as selenium and antimony.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の光沢度調整剤は光沢効果が得られる電流密度
範囲が狭く、ある一定の限られた範囲内でしか要求され
る光沢度を得ることができなかった。However, such a conventional gloss adjusting agent has a narrow current density range in which a gloss effect can be obtained, and can obtain a gloss level required only within a certain limited range. I couldn't.
【０００５】本発明はこのような従来の技術に着目して
なされたものであり、広い電流密度範囲において安定し
た半光沢外観を得ることができる半光沢銀めっき用の光
沢度調整剤を提供するものである。The present invention has been made by paying attention to such a conventional technique, and provides a gloss adjusting agent for semi-bright silver plating capable of obtaining a stable semi-bright appearance in a wide current density range. It is a thing.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記目的を達
成するために、ＳＨ- イオンを含んで成る銀めっき浴用
の光沢度調整剤を用いる。In order to achieve the above object, the present invention uses a gloss adjusting agent for a silver plating bath containing SH − ions.
【０００７】この光沢度調整剤を銀めっき浴に添加する
ことにより、半光沢外観が得られる電流密度範囲が広が
る。つまり、良好な安定した半光沢外観が得られる電流
密度範囲が、従来の光沢度調整剤に場合に比べて広くな
る。また、光沢度は浴温や他の成分により変化させるこ
とができるが、本発明に係る光沢度調整剤は電流密度に
よる影響はほとんど受けない。そして、光沢度のムラも
ないため、浴の管理が容易である。By adding this glossiness adjusting agent to the silver plating bath, the current density range for obtaining a semi-glossy appearance is expanded. That is, the current density range in which a favorable and stable semi-glossy appearance is obtained becomes wider than that of the conventional glossiness adjusting agent. Further, the glossiness can be changed by the bath temperature and other components, but the glossiness adjusting agent according to the present invention is hardly affected by the current density. Further, since there is no unevenness in glossiness, bath management is easy.
【０００８】[0008]
【発明の実施の形態】本発明の光沢度調整剤の主要素で
あるＳＨ- イオンの供給は、水硫化カリウム、水硫化ナ
トリウム、硫化水素等の添加により行うのが好適であ
る。BEST MODE FOR CARRYING OUT THE INVENTION The supply of SH − ions, which is the main element of the glossiness adjusting agent of the present invention, is preferably carried out by adding potassium hydrosulfide, sodium hydrosulfide, hydrogen sulfide or the like.
【０００９】この光沢度調整剤の含有量は、１〜１００
０ｍｇ／リットル（好ましくは２０〜２００ｍｇ／リッ
トル）で１ｍｇ／リットルより少ないと効果が認めれ
ず、１０００ｍｇ／リットルより多いと下地金属の硫化
を生じる場合がある。The content of this glossiness adjusting agent is from 1 to 100.
If the amount is 0 mg / liter (preferably 20 to 200 mg / liter), less than 1 mg / liter, no effect is observed, and if the amount is more than 1000 mg / liter, sulfuration of the base metal may occur.
【００１０】この光沢度調整剤は銀の非シアン浴に特に
適している。非シアン浴の場合は、銀化合物として、硝
酸銀、酸化銀、酢酸銀等が好適である。The gloss modifier is particularly suitable for silver non-cyan baths. In the case of a non-cyan bath, silver nitrate, silver oxide, silver acetate and the like are suitable as the silver compound.
【００１１】非シアン浴の場合は、銀化合物として無機
酸銀を含有し、錯形成剤として、一般式In the case of a non-cyan bath, an inorganic acid silver is contained as a silver compound, and as a complexing agent, a general formula is used.
【化３】
〔式中、Ｒ1 、Ｒ3 、Ｒ5 はそれぞれ水素、又は１〜５
個の炭素原子を持つアルキル基、又はアリール基、又は
アルコール〕または一般式[Chemical 3] [In the formula, R 1 , R 3 and R 5 are each hydrogen, or 1 to 5
Alkyl group having 1 carbon atom, or aryl group, or alcohol] or general formula
【化４】
〔式中、Ｒ1 、Ｒ3 、Ｒ5 、Ｒ5 ′はそれぞれ水素、又
は１〜５個の炭素原子を持つアルキル基、又はアリール
基、又はアルコール〕で表されるヒダントイン化合物の
少なくともいずれかを含有したものが好適である。[Chemical 4] [Wherein R 1 , R 3 , R 5 , and R 5 ′ are each hydrogen, or an alkyl group having 1 to 5 carbon atoms, or an aryl group, or an alcohol], and at least one of the hydantoin compounds The one containing is preferable.
【００１２】上記錯形成剤としては、ヒダントイン、１
−メチルヒダントイン、１，３−ジメチルヒダントイ
ン、５，５−ジメチルヒダントイン、１−メタノール−
５，５−ジメチルヒダントイン、５，５−ジフェニルヒ
ダントイン等を採用できる。The complexing agents include hydantoin, 1
-Methylhydantoin, 1,3-dimethylhydantoin, 5,5-dimethylhydantoin, 1-methanol-
5,5-dimethylhydantoin, 5,5-diphenylhydantoin, etc. can be adopted.
【００１３】この非シアンの銀めっき浴は、銀を金属濃
度で１〜１００ｇ／リットル含有するとともに、錯形成
剤を浴中の銀イオン濃度が１０-15 〜１０-2ｍｏｌ／リ
ットル含有するものとしている。そしてまた、この銀め
っき浴は、ｐＨ８〜１３、液温３０〜９０℃、電流密度
１〜１５０Ａ／ｄｍ2 の操作条件で用いられるものとし
ている。The non-cyan silver plating bath contains silver in a metal concentration of 1 to 100 g / liter and a complexing agent in a silver ion concentration of 10 -15 to 10 -2 mol / liter. I am trying. Further, this silver plating bath is assumed to be used under operating conditions of pH 8 to 13, liquid temperature 30 to 90 ° C., and current density 1 to 150 A / dm 2 .
【００１４】本発明の光沢度調整剤による光沢効果は前
述したように電流密度の影響をそれほど受けない。しか
し、光沢効果は浴温度の影響を受ける。すなわち、浴温
度が高いほど、光沢度が低下するという傾向性を示す。The gloss effect by the gloss adjusting agent of the present invention is not so much influenced by the current density as described above. However, the gloss effect is affected by bath temperature. That is, the higher the bath temperature, the lower the glossiness.
【００１５】本発明の光沢度調整剤を含む銀めっき浴で
は、ストライクめっきとして使用する以外の場合は、溶
解性の銀アノードを使用した方が好適である。すなわち
銀アノードを使用する場合は、銀が溶解して浴中の銀濃
度が増加するため、ストライク浴としての特長を失って
しまうが、それ以外の銀めっき浴の場合は、浴の銀濃度
管理の手間が軽減される。更に、アノードとして、銀を
使用した場合は、それ以外の金属（例えば白金めっきチ
タンアノード）を使用する場合に比べて、浴中における
光沢度調整剤の分解反応を抑制することができる。従っ
て、光沢度調整剤の寿命（ひいては銀めっき浴の寿命）
が長くなる。このように、銀アノードを利用したことに
より、前記ＳＨ- イオンを含有して成る光沢度調整剤の
分解反応を抑えることができるのは、アノードにおける
ＳＨ- イオンの酸化反応が銀の溶解反応により抑制或い
は防止されるという理由によるものである。In the silver plating bath containing the gloss adjusting agent of the present invention, it is preferable to use a soluble silver anode except when it is used as strike plating. That is, when a silver anode is used, silver dissolves and the silver concentration in the bath increases, so the characteristics as a strike bath are lost, but in the case of other silver plating baths, the silver concentration control of the bath is controlled. The labor of is reduced. Furthermore, when silver is used as the anode, the decomposition reaction of the glossiness adjusting agent in the bath can be suppressed as compared with the case of using other metal (for example, platinum-plated titanium anode). Therefore, the life of the gloss adjusting agent (and thus the life of the silver plating bath)
Becomes longer. As described above, by utilizing the silver anode, the decomposition reaction of the gloss adjusting agent containing the SH − ion can be suppressed because the oxidation reaction of the SH − ion in the anode is caused by the dissolution reaction of silver. This is because it is suppressed or prevented.
【００１６】[0016]
【実施例】表１に示されているように、本発明に係る銀
めっき浴を６種（実施例１〜６）調製した。そして、光
沢度調整剤としては、実施例１〜３においては水硫化ナ
トリウムを使用し、実施例４〜６においては水硫化カリ
ウムを使用した。また、比較例として、実施例２の光沢
度調整剤を従来の酒石酸アンチモニルカリウムに変更し
た浴（比較例１）と、実施例５の光沢度調整剤を従来の
別のサッカリンに変更した浴（比較例２）を用意した。
そして、実施例１〜６の銀めっき浴を白金めっきチタン
アノードと、銀アノードをそれぞれ用いてめっきを行っ
た。また、比較例１は白金めっきチタンアノードを用
い、比較例２は銀アノードを用いてめっきを行った。EXAMPLES As shown in Table 1, six kinds of silver plating baths (Examples 1 to 6) according to the present invention were prepared. And as a glossiness adjusting agent, sodium hydrosulfide was used in Examples 1-3, and potassium hydrosulfide was used in Examples 4-6. Further, as comparative examples, a bath in which the gloss adjusting agent of Example 2 was changed to a conventional antimony potassium tartrate (Comparative Example 1), and a bath in which the gloss adjusting agent of Example 5 was changed to another conventional saccharin (Comparative example 2) was prepared.
Then, the silver plating baths of Examples 1 to 6 were plated using a platinum-plated titanium anode and a silver anode, respectively. In addition, Comparative Example 1 was plated using a platinum-plated titanium anode, and Comparative Example 2 was plated using a silver anode.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【表２】 [Table 2]
【００１９】尚、上記表２における「電流密度」は噴射
めっき装置を使用した場合の値である。この噴射めっき
は、温度６０℃、ポンプ流量１２リットル／分、めっき
面積１ｃｍ2 の条件で行われた。The "current density" in Table 2 above is a value when an injection plating apparatus is used. This spray plating was performed under the conditions of a temperature of 60 ° C., a pump flow rate of 12 liters / minute, and a plating area of 1 cm 2 .
【００２０】そして、「寿命」は、液量５００ミリリッ
トルのビーカー中に１６ｃｍ2 のテストピースを浸漬し
てめっきした場合の値である。尚、液温は６０℃で、電
流密度は７．５Ａ／ｄｍ2 であった。The "life" is a value when a 16 cm 2 test piece is immersed in a beaker having a liquid volume of 500 ml for plating. The liquid temperature was 60 ° C. and the current density was 7.5 A / dm 2 .
【００２１】そして、各実施例及び比較例において、安
定した半光沢外観が得れる電流密度と寿命評価を行っ
た。光沢評価は、光沢度計（ＧＡＭ）を用いて測定し
た。光沢度が０．３〜０．８の範囲を安定した半光沢外
観とし、それ以外を不良とした。また、銀めっき浴の寿
命は、その浴を何ターンまで使用できるか調べた。Then, in each of the examples and comparative examples, the current density and life were evaluated so that a stable semi-glossy appearance was obtained. The gloss evaluation was measured using a gloss meter (GAM). A stable semi-gloss appearance was obtained when the glossiness was in the range of 0.3 to 0.8, and the others were regarded as defective. As for the life of the silver plating bath, the number of turns of the bath was examined.
【００２２】結果は表２に示すように、実施例１〜６の
方は、広い電流密度範囲において均一な半光沢外観を得
ることができた。そして、析出効率は１００％であっ
た。As shown in Table 2, in Examples 1 to 6, a uniform semi-glossy appearance could be obtained in a wide current density range. The deposition efficiency was 100%.
【００２３】これに対し、比較例１及び比較例２にあっ
ては、実施例の場合の上限値よりも低い上限値、或いは
実施例の下限値よりも高い下限値でしか、半光沢外観は
得ることができなかった。On the other hand, in Comparative Example 1 and Comparative Example 2, the semi-glossy appearance is obtained only when the upper limit value is lower than the upper limit value of the embodiment or higher than the lower limit value of the embodiment. I couldn't get it.
【００２４】更に、実施例１〜６の寿命評価に関して
は、アノードとして銀を使用した方が、白金めっきチタ
ンアノードを使用した場合よりも、銀めっき浴として長
い寿命を示した。Further, regarding the life evaluation of Examples 1 to 6, the use of silver as the anode showed a longer life as the silver plating bath than the case of using the platinum-plated titanium anode.
【００２５】[0025]
【発明の効果】この発明の光沢度調整剤を銀めっき浴に
添加することにより、良好な安定した半光沢外観が得ら
れる電流密度範囲が、従来の光沢度調整剤に場合に比べ
て広くなる。また、この光沢度調整剤を使用する場合
は、銀アノードを用いた方が銀めっき浴の寿命が延び、
浴の管理が容易になるため、産業上大変に有益である。By adding the glossiness adjusting agent of the present invention to the silver plating bath, the current density range in which a good and stable semi-glossy appearance is obtained becomes wider than that of the conventional glossiness adjusting agent. . When using this glossiness adjusting agent, the life of the silver plating bath is extended by using a silver anode,
Since the bath is easy to manage, it is very useful in industry.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−250193（ＪＰ，Ａ) 特開 昭59−150095（ＪＰ，Ａ) 特開 昭55−79892（ＪＰ，Ａ) 特開 昭55−34699（ＪＰ，Ａ) 特開 昭54−155132（ＪＰ，Ａ) 特開 昭54−39329（ＪＰ，Ａ) 特開 昭52−105540（ＪＰ，Ａ) 特開 昭52−7335（ＪＰ，Ａ) 特開 昭51−149134（ＪＰ，Ａ) 特開 昭50−120435（ＪＰ，Ａ) 特開 平８−104993（ＪＰ，Ａ) 特開 平７−166391（ＪＰ，Ａ) 特開 平６−330372（ＪＰ，Ａ) 特開 平２−290993（ＪＰ，Ａ) 特開 平２−228489（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C25D 3/46 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 62-250193 (JP, A) JP 59-150095 (JP, A) JP 55-79892 (JP, A) JP 55- 34699 (JP, A) JP 54-155132 (JP, A) JP 54-39329 (JP, A) JP 52-105540 (JP, A) JP 52-7335 (JP, A) JP-A-51-149134 (JP, A) JP-A-50-120435 (JP, A) JP-A-8-104993 (JP, A) JP-A-7-166391 (JP, A) JP-A-6-330372 (JP, A) JP-A-2-290993 (JP, A) JP-A-2-228489 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) C25D 3/46
Claims (5)
き浴用の光沢度調整剤。1. A gloss adjusting agent for a semi-bright silver plating bath comprising SH − ions.
オンとして１〜１０００ｍｇ／リットル含有して成る非
シアン系の銀めっき浴。2. A non-cyan type silver plating bath containing the gloss adjusting agent according to claim 1 as SH − ions in an amount of 1 to 1000 mg / liter.
化ナトリウム、硫化水素の少なくとも何れか１つの形で
供給されている請求項２記載の非シアン系の銀めっき
浴。3. The non-cyan type silver plating bath according to claim 2, wherein the SH − ions are supplied in the form of at least one of potassium hydrosulfide, sodium hydrosulfide, and hydrogen sulfide.
成剤として、 一般式 【化１】 〔式中、Ｒ1 、Ｒ3 、Ｒ5 はそれぞれ水素、又は１〜５
個の炭素原子を持つアルキル基、又はアリール基、又は
アルコール〕または一般式 【化２】 〔式中、Ｒ1 、Ｒ3 、Ｒ5 、Ｒ5 ′はそれぞれ水素、又
は１〜５個の炭素原子を持つアルキル基、又はアリール
基、又はアルコール〕で表されるヒダントイン化合物の
少なくともいずれかを含有する請求項２又は請求項３記
載の非シアン系の銀めっき浴。4. An inorganic acid silver is contained as a silver compound, and a complexing agent represented by the general formula: [In the formula, R 1 , R 3 and R 5 are each hydrogen, or 1 to 5
Alkyl group having 1 carbon atom, or aryl group, or alcohol] or the general formula: [Wherein R 1 , R 3 , R 5 , and R 5 ′ are each hydrogen, or an alkyl group having 1 to 5 carbon atoms, or an aryl group, or an alcohol], and at least one of the hydantoin compounds The non-cyan type silver plating bath according to claim 2 or claim 3 containing.
めっき浴で、溶解性の銀アノードを用いてめっきする銀
めっき方法。5. A silver plating method for plating with a soluble silver anode in the silver plating bath according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06431796A JP3462338B2 (en) | 1996-03-21 | 1996-03-21 | Brightness adjuster for semi-gloss silver plating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06431796A JP3462338B2 (en) | 1996-03-21 | 1996-03-21 | Brightness adjuster for semi-gloss silver plating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09256187A JPH09256187A (en) | 1997-09-30 |
| JP3462338B2 true JP3462338B2 (en) | 2003-11-05 |
Family
ID=13254748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06431796A Expired - Lifetime JP3462338B2 (en) | 1996-03-21 | 1996-03-21 | Brightness adjuster for semi-gloss silver plating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3462338B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021166964A1 (en) * | 2020-02-19 | 2021-08-26 | Ｊｘ金属株式会社 | Silver-plated material and method for producing same, contact or terminal component, and automobile |
| JP2021130866A (en) * | 2020-02-19 | 2021-09-09 | Ｊｘ金属株式会社 | Silver-plated material and method for producing the same, contact or terminal component, and automobile |
| WO2021166965A1 (en) * | 2020-02-19 | 2021-08-26 | Ｊｘ金属株式会社 | Silver plating material, contact or terminal component, and autonomous vehicle |
| JP7264849B2 (en) * | 2020-02-19 | 2023-04-25 | Ｊｘ金属株式会社 | Silver-plated materials, contact or terminal parts, and automobiles |
-
1996
- 1996-03-21 JP JP06431796A patent/JP3462338B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09256187A (en) | 1997-09-30 |
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