JPS6369985A - Gold plated case for wrist watch - Google Patents
Gold plated case for wrist watchInfo
- Publication number
- JPS6369985A JPS6369985A JP18450986A JP18450986A JPS6369985A JP S6369985 A JPS6369985 A JP S6369985A JP 18450986 A JP18450986 A JP 18450986A JP 18450986 A JP18450986 A JP 18450986A JP S6369985 A JPS6369985 A JP S6369985A
- Authority
- JP
- Japan
- Prior art keywords
- case
- gold
- gold plated
- pinholes
- wrist watch
- 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
Links
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title abstract description 7
- 239000010931 gold Substances 0.000 title abstract description 7
- 229910052737 gold Inorganic materials 0.000 title abstract description 7
- 210000000707 wrist Anatomy 0.000 title abstract 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- 238000007747 plating Methods 0.000 abstract description 13
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004532 chromating Methods 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910001020 Au alloy Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000003353 gold alloy Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- -1 2-methoxyethoxy Chemical group 0.000 description 1
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- MSNOMDLPLDYDME-UHFFFAOYSA-N gold nickel Chemical compound [Ni].[Au] MSNOMDLPLDYDME-UHFFFAOYSA-N 0.000 description 1
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Landscapes
- Chemical Treatment Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、耐食性を著しく向上させた腕時計用金めっき
ケースに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gold-plated case for a wristwatch that has significantly improved corrosion resistance.
従来の腕時計用金めっきケースには、めっき以外の表面
処理は特に施されておらず、耐食性に劣るものであった
が、本発明によるシランカップリング剤を含有したクロ
メート処理液を用いて、金めつき層のピンホールの封孔
処理を施すことにより、耐食性を著しく向上させること
が可能となった。Conventional gold-plated cases for watches have not been subjected to any particular surface treatment other than plating, and have poor corrosion resistance.However, using the chromate treatment solution containing the silane coupling agent of the present invention, gold By sealing pinholes in the plating layer, it has become possible to significantly improve corrosion resistance.
従来の腕時計用金めっきケースには、素地金属（黄銅、
ステンレス等）に下地ニッケルめっき、さらにその上に
下地金合金めっき、そして最上層に仕上金合金めっきが
施されているが、めっき以外の表面処理は特になされて
いなかった。Conventional gold-plated watch cases are made of base metals (brass,
(stainless steel, etc.) is coated with a base nickel plating, a base gold alloy plating on top of that, and a final gold alloy plating on the top layer, but no other surface treatment was performed other than the plating.
従来の腕時計用金めっきケースでは、金めつき層のピン
ホールを介して、まず下地ニッケルめっきからのニッケ
ルの電解腐食が発生し、さらに進行して素地金属の腐食
が発生するという腐食発生機構により、耐食性に劣るも
のであった。また、一部、クロメート処理液のみによる
封孔処理も試みられたが、１週間程度で皮膜が脱落して
しまい、安定性に欠ける為、実用化に至っていなかった
。In conventional gold-plated watch cases, electrolytic corrosion of nickel from the base nickel plating occurs through pinholes in the gold-plated layer, and then corrosion of the base metal progresses. , the corrosion resistance was poor. In addition, some attempts have been made to seal the pores using only a chromate treatment solution, but this has not been put to practical use because the film falls off after about a week and lacks stability.
上記問題点を解決するために、本発明は、シランカップ
リング剤のアンカー効果と模本効果とにより、安定的に
ピンホールの封孔を行わせしめ、耐食性を著しく向上さ
せた腕時計用命めっきケースを実現したものである。In order to solve the above-mentioned problems, the present invention provides a metal-plated case for wristwatches that uses the anchor effect and imitation effect of a silane coupling agent to stably seal pinholes and significantly improves corrosion resistance. This has been achieved.
（・作用〕
上記のように構成された腕時計用命めっきケースにおい
て、シランカップリング剤を含有したクロメート皮膜が
、金めつきのピンホールからの電解腐食を防止し、耐食
性を著しく向上させる。(Function) In the metal-plated watch case configured as described above, the chromate film containing the silane coupling agent prevents electrolytic corrosion from pinholes in the gold plating and significantly improves corrosion resistance.
以下、実施例により本発明を説明する。 The present invention will be explained below with reference to Examples.
素地黄銅に下地ニッケルめっき５ミクロン、下地金銀合
金めっき３ミクロン、仕上金ニツケル合金めっき２ミク
ロンを施した腕時計用命めっきケースを、Ｎ−（２−ア
ミノエチル）３−アミノプロピルメチルジメトキシシラ
ンを０．２〜２重量％の範囲で添加したクロメート処理
液（重クロム酸カリウム３０ｇ／Ｉ１．硝酸２顛１／ｌ
）に、１分間浸漬した後、水洗し、熱風（６０〜７０℃
）で乾燥させ封孔処理を施し、１ケ月間放置後人工汗浸
漬（２４時間浸漬）による強制劣化試験を行ったところ
、次の表に示される様な結果となった。A plating case for a watch is made of base brass with a base nickel plating of 5 microns, a base gold-silver alloy plating of 3 microns, and a final gold-nickel alloy plating of 2 microns. Chromate treatment solution added in a range of 2 to 2% by weight (potassium dichromate 30g/I1.2 nitric acid 1/l)
) for 1 minute, rinsed with water, and heated with hot air (60~70℃).
), and after being left for one month, a forced deterioration test was conducted by immersion in artificial sweat (24 hour immersion), with the results shown in the table below.
なお、Ｎ−（２−アミノエチル）３−アミノプロピルメ
チルジメトキシシランの添加量が、０．２重量％に満た
ない量では、アンカー効果と模本効果とが認められず、
また、２重量％を超える量では、クロメート処理液に沈
殿を生じてしまい、使用に耐えなかった。Note that when the amount of N-(2-aminoethyl)3-aminopropylmethyldimethoxysilane added is less than 0.2% by weight, the anchor effect and the model effect are not observed.
Moreover, if the amount exceeds 2% by weight, precipitation will occur in the chromate treatment solution, making it unusable.
また、シランカップリング剤については、ビニルトリメ
トキシシラン、ビニルトリス（２−メトキシエトキシ）
シランのビニル系シランカップリング剤、及び本実施例
以外のアミノ系シランカップリング剤、並びに３−グリ
シドキシプロピルトリメトキシシラン等のエポキシ系シ
ランカップリング剤についても、本実施例と同様な効果
が得られた。In addition, regarding silane coupling agents, vinyltrimethoxysilane, vinyltris(2-methoxyethoxy)
Effects similar to those in this example can also be obtained with vinyl silane coupling agents for silane, amino-based silane coupling agents other than those in this example, and epoxy silane coupling agents such as 3-glycidoxypropyltrimethoxysilane. was gotten.
以上述べてきたように、本発明によれば、耐食性を著し
く向上させた腕時計用命めっきケースが可能である。As described above, according to the present invention, a plated case for a wristwatch with significantly improved corrosion resistance is possible.
以上that's all
Claims (1)
メート処理液を用いて、金めっき層のピンホールの封孔
処理を施した腕時計用金めっきケース。A gold-plated case for a wristwatch in which pinholes in a gold-plated layer are sealed using a chromate treatment solution containing 0.2 to 2% by weight of a silane coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18450986A JPS6369985A (en) | 1986-08-06 | 1986-08-06 | Gold plated case for wrist watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18450986A JPS6369985A (en) | 1986-08-06 | 1986-08-06 | Gold plated case for wrist watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6369985A true JPS6369985A (en) | 1988-03-30 |
Family
ID=16154435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18450986A Pending JPS6369985A (en) | 1986-08-06 | 1986-08-06 | Gold plated case for wrist watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6369985A (en) |
-
1986
- 1986-08-06 JP JP18450986A patent/JPS6369985A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5716194A (en) | Method for partially compounding ornamental noble metal alloy onto austenite type stainless steel | |
| JPS5864380A (en) | External parts for timepieces | |
| JPS6369985A (en) | Gold plated case for wrist watch | |
| JPS60138066A (en) | Surface treatment of external parts for timepiece | |
| JPS62164885A (en) | Hands for wrist watch | |
| JPS62247095A (en) | Gold plating bath for titanium and titanium alloy | |
| JPS5950192A (en) | External parts for timepiece | |
| JPH0534432B2 (en) | ||
| JPS5920497A (en) | Gold plated case for wrist watch | |
| US4654237A (en) | Process for chemical and thermal treatment of steel workpieces | |
| JPS5923895A (en) | Method for plating decorative parts to provide black color tone | |
| JPS5848693A (en) | Armor parts for watch | |
| JPS6237712B2 (en) | ||
| JPS5949320B2 (en) | Decorative parts | |
| JPS5935697A (en) | External parts for timepiece | |
| JPS59166683A (en) | Ornametal part | |
| JPS5861267A (en) | External parts for watch | |
| JPS58130318A (en) | Composite blank material for frame of spectacles | |
| JPS6137357B2 (en) | ||
| JPS5585689A (en) | Black color plating bath | |
| JPS5864396A (en) | White colored external parts for timepieces | |
| JPS5266374A (en) | Galvanization of non electrolytic nickel for semiconductor substrate | |
| JPS62284096A (en) | Facing part for timepiece | |
| JPS59140364A (en) | External parts for watch | |
| JPS5864397A (en) | Golden colored external parts for timepieces |