KR800000685B1 - Sn-ni alloy brilliant plating solution - Google Patents
Sn-ni alloy brilliant plating solution Download PDFInfo
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- KR800000685B1 KR800000685B1 KR740001218A KR740001218A KR800000685B1 KR 800000685 B1 KR800000685 B1 KR 800000685B1 KR 740001218 A KR740001218 A KR 740001218A KR 740001218 A KR740001218 A KR 740001218A KR 800000685 B1 KR800000685 B1 KR 800000685B1
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Abstract
Description
본원 발명은 광택주석-니켈 합금도금액에 관한 것이다.The present invention relates to a bright tin-nickel alloy plating solution.
종래 제1주석염, 니켈염 및 피로인산염(燐酸鹽)을 주성분으로 하는 주석-니켈합금도금액에, 광택제로서 구연산 암모늄, 젤라틴, 구연산 암모늄과 젤라틴, α-아미노산, 예컨대 글리신 또는 α-아미노산과 메르캅탄 유도체를 첨가한 도금액은 알려져 있다.Conventionally, tin-nickel alloy plating solutions mainly composed of stannous salts, nickel salts, and pyrophosphates include ammonium citrate, gelatin, ammonium citrate and gelatin, α-amino acids such as glycine or α-amino acid as a brightening agent. Plating liquids to which mercaptan derivatives are added are known.
본원 발명의 목적은 종래 얻을 수 없었던 광택을 도금에 부여하는 광택주석-니켈합금도금액을 얻는 것이다.An object of the present invention is to obtain a gloss tin-nickel alloy plating solution which gives a plating a gloss which has not been obtained conventionally.
본원 발명은 제1주석염, 니켈염 및 피로인산염을 주성분으로 하는 도금액에 함황아미노산 또는 그 염을 첨가한 광택주석-니켈 합금도금액이다.The present invention is a bright tin-nickel alloy plating solution in which a sulfur-containing amino acid or a salt thereof is added to a plating solution containing first tin salt, nickel salt and pyrophosphate as a main component.
또 본원 발명은 상기 도금액에 다시 암모니아 또는 암모늄염을 첨가한 광택-니켈 합금 도금액이다.Moreover, this invention is a gloss- nickel-alloy plating liquid which added ammonia or an ammonium salt to the said plating liquid again.
본원 발명의 도금액에 첨가하는 함황아미노산은, 예컨대, 시스테인, 메티오닌, 시스틴, 호모시스틴, 호모시스테인, 에티오닌, 시스틴디술폭시트, 활성메티오닌, 비타민 U 등이며, 그 사용량은 0.02-50g/ℓ이다.The sulfur-containing amino acid added to the plating solution of the present invention is, for example, cysteine, methionine, cystine, homocystine, homocysteine, ethionine, cystine disulfoxide, active methionine, vitamin U and the like, and the amount thereof is 0.02-50 g / L. .
암모늄염은 예컨대, 염화암모늄, 황산암모늄, 질산암모늄, 구연산암모늄, 주석산(酒石酸)암모늄, 초산암모늄 등이다. 암모니아는 28% 암모니아수로서 5-100cc/ℓ사용되며, 암모늄염은 1-150g/ℓ사용된다.Ammonium salts are, for example, ammonium chloride, ammonium sulfate, ammonium nitrate, ammonium citrate, ammonium tartarate, ammonium acetate and the like. Ammonia is used as 5% to 100 cc / l as 28% ammonia water and 1-150 g / l as ammonium salt.
다음에 본원 발명을 실시예에 의거하여 상세하게 설명한다.Next, this invention is demonstrated in detail based on an Example.
[실시예 1]Example 1
피로인산 칼륨 200g/ℓ, 피로인산 제1주석 30g/ℓ, 피로인산 니켈 50g/ℓ로 만들어진 도금액에 메티오닌 5g/ℓ을 첨가하여 pH를 9.5로 조정한다. 양극에 니켈, 음극에 광택니켈도금을 실시한 진유판(眞鍮板)을 사용하여 35℃에서 기계적으로 교반하면서 전류밀도 평균 0.2A/d㎡로 도금했다. 흑색을 띤 스테인레스색을 지닌 광택주석-니켈합금도금(석출주석 함량75%)이 얻었졌다.The pH is adjusted to 9.5 by adding 5 g / l of methionine to a plating solution made of 200 g / l of potassium pyrophosphate, 30 g / l of stannous pyrophosphate, and 50 g / l of nickel pyrophosphate. The plate was plated with an average current density of 0.2 A / dm 2 while mechanically stirring at 35 ° C. using a petroleum plate coated with nickel on the positive electrode and glossy nickel plating on the negative electrode. Polished tin-nickel alloy plating (75% precipitated tin content) with blackish stainless color was obtained.
[실시예 2-9]Example 2-9
실시예 1에 있어서의 메티오닌 대신에 시스테인, 시스틴, 호모시스틴, 호모시스테인, 에티오닌, 시스틴 디술폭시드, 활성메티오닌, 비타민 U를 사용한 외는 실시예 1과 같이 하여 실시예 1과 같은 결과를 얻었다. 다음에 실시예 1, 10-13, 참고예 1,2를 표로 나타낸다.Cysteine, cystine, homocystine, homocysteine, ethionine, cystine disulfoxide, active methionine, and vitamin U were used in place of methionine in Example 1, and the same results as in Example 1 were obtained. Next, Examples 1, 10-13 and Reference Examples 1 and 2 are shown in a table.
[표 1]TABLE 1
[표 2]TABLE 2
본원 발명의 제1주석염, 니켈염 및 피로인산염을 주성분으로 하는 도금액에 함황아미노산을 첨가한 도금액은 종래 얻을 수 없었던 광택을 갖는 광택주석-니켈 합금도금을 가져다 준다. 이 도금액에 다시 암모니아 또는 암모늄염을 병용하면 광택을 더욱 개량하는 동시에 주석-니켈합금도금의 색채를 희게 한다.The plating solution in which the sulfuric acid amino acid is added to the plating solution containing the first tin salt, the nickel salt and the pyrophosphate of the present invention gives a shiny tin-nickel alloy plating having a gloss which has not been obtained in the past. When ammonia or ammonium salt is used again in this plating solution, the gloss is further improved and the color of tin-nickel alloy plating is whitened.
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KR740001218A KR800000685B1 (en) | 1974-01-19 | 1974-01-19 | Sn-ni alloy brilliant plating solution |
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KR740001218A KR800000685B1 (en) | 1974-01-19 | 1974-01-19 | Sn-ni alloy brilliant plating solution |
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