CN1087361C - Zinc-tin alloy plating solution and preparation process thereof - Google Patents

Zinc-tin alloy plating solution and preparation process thereof Download PDF

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Publication number
CN1087361C
CN1087361C CN95112541A CN95112541A CN1087361C CN 1087361 C CN1087361 C CN 1087361C CN 95112541 A CN95112541 A CN 95112541A CN 95112541 A CN95112541 A CN 95112541A CN 1087361 C CN1087361 C CN 1087361C
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grams per
per liters
follows
deionized water
water
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Expired - Fee Related
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CN95112541A
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CN1150183A (en
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唐文海
曹阳淑
颜心荘
唐燕
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Abstract

A Zn-Sn alloy plating liquid for plating on metal surface is prepared from zinc chloride and stannous chloride as main salts through respectively adding disodium ethylenediamine tetraacetate as zinc salt complexing agent and NH as tin salt complexing agent4F. Dissolving and complexing nitrilotriacetic acid and distilled water, and then mixing. The invention can be prepared and used at normal temperature, has stable performance, does not pollute the environment, has simple process and energy saving, can plate the inner surface and the outer surface of a workpiece, has bright and compact plating layer which is blue-white or silvery-white, and resists the corrosion of dilute acid and alkali. The application is wide.

Description

Zn-Sn alloy electroplating bath and preparation technology thereof
A kind of matallic surface layer Zinc-tin alloy solution and preparation technology thereof.
Conventional electro-galvanizing tin alloy solution contains prussiate, and is bigger to human body and environmental hazard.The service temperature height, energy consumption is big, and the many zinc of coating tin of acquisition are few, and cost is higher.
The purpose of this invention is to provide a kind of Zn-Sn alloy electroplating bath and preparation technology thereof, accomplish can to prepare and use under the normal temperature, save energy, free from environmental pollution.
The present invention is to be main salt with zinc chloride and tin protochloride, adds complexing agent and forms.The proportioning of each component is as above:
Zinc chloride ZnCl 220~45 grams per liters
Tin protochloride SnCl 22H 2O 5~20 grams per liters
Zinc salt complexing agent disodium ethylene diamine tetraacetate C 10H 14N 2O 8Na 22H 2O 20~40 grams per liters
Pink salt complexing agent NH 4F or NaF 5~25 grams per liters
Nitrilotriacetic acid(NTA) N (CH 2COOH) 35~10 grams per liters
All the other are distilled water or deionized water PH=2~55
Preparation technology of the present invention is as follows:
A, in plastic channel, pour into part distilled water or deionized water.Pei Zhi volume (as follows) adds zinc salt complexing agent disodium ethylene diamine tetraacetate by 20~40 grams per liters as required, constantly be stirred to dissolving fully after, go into zinc salt ZnCl by 20~45 grams per liters 2Dissolve complexing.
B, be equipped with nitrilotriacetic acid(NTA) N (CH by 5~10 grams per liters 2COOH) 3, pack that another has in the water plastic tank and with strong aqua or sodium hydroxide and adjusts to PH=4~5 into, add pink salt complexing agent NH by 5~25 grams per liters then 4F or NaF are stirred to dissolving fully, add pink salt SnCl by 5~20 grams per liters 22H 2After O dissolves complexing.All pour in the plastic channel and mix.
C, adding distil water or deionized water and are adjusted to PH=2~5.5 with HCl or NaOH solution and are got final product to the volume that needs preparation in the plastic channel.
In order to make effect of the present invention better, also can in plating bath, add micro-sea-gull washing composition.
Using method of the present invention is as follows: at normal temperatures workpiece is put into plating bath, with the electrolysis zine plate of different table area and sheet tin as anode.Be negative electrode with the workpiece and pass to 0.1~1A/Dm 2Low-voltage DC, just can be on the workpiece outside surface be electroplated the fine and close coating of light.On pipe fitting or inner walls of deep holes, obtain coating if desired, can penetrate aluminium bar in the workpiece and be suspended on the negative electrode, just can make and all obtain coating on workpiece inwall and the outside surface.
Compared with the prior art, the present invention has following characteristics:
1, can prepare and use at normal temperatures, stable performance, no waste gas produces, and is free from environmental pollution, do not damage human body.
2, preparation technology and using method are simple, and energy consumption is few, and the cost that obtains coating is low.
3, both the workpiece outside surface can be plated, the workpiece inwall can be plated again.Fine and close blue or green light of amount of coating light or silvery white, anti-diluted acid caustic corrosion, of many uses.
Embodiment one
The operation steps of embodiment is the same with processing step recited above, repeats no more.Its difference is the proportioning difference of each component.The proportioning of embodiment one is as follows:
ZnCl 45 grams per liter SnCl 22H 2O 20 grams per liters
C 10H 14N 2O 8Na 22H 2O 40 grams per liters
NH 4F or NaF 25 grams per liters
N (CH 2COOH) 310 grams per liters
All the other are distilled water or deionized water PH=5.5
The proportioning of embodiment two each components is as follows:
ZnCl 20 grams per liter SnCl 22H 2O 5 grams per liters
C 10H 14N 2O 8Na 22H 2O 20 grams per liters
NH 4F or NaF 5 grams per liter N (CH 2COOH) 35 grams per liters
All the other are distilled water or deionized water PH=2
The best proportioning of embodiment three each components is as follows:
ZnCl 35 grams per liter SnCl 22H 2O 10 grams per liters
C 10H 14N 2O 8Na 22H 2O 30 grams per liters
NH 4F or NaF 10 grams per liter N (CH 2COOH) 35 grams per liters
All the other are distilled water or deionized water PH=4

Claims (4)

1, a kind of metallic surface coating Zn-Sn alloy electroplating bath preparation technology is characterized in that processing step is as follows:
A, pour into part distilled water or deionized water in plastic channel, Pei Zhi volume (as follows) adds zinc salt complexing agent disodium ethylene diamine tetraacetate by 20~40 grams per liters as required, constantly be stirred to dissolving fully after, add zinc salt ZnCl by 20~45 grams per liters 2, dissolve complexing;
B, be equipped with nitrilotriacetic acid(NTA) N (CH by 5~10 grams per liters 2COOH) 3, pack that another has in the water plastic tank and with strong aqua or sodium hydroxide and adjusts to PH=4~5 into, add pink salt complexing agent NH by 5~25 grams per liters then 4F or NaF are stirred to dissolving fully, add pink salt SnCl by 5~20 grams per liters 22H 2After O dissolves complexing, all pour in the plastic channel and mix;
C, adding distil water or deionized water and are adjusted to PH=2~2.5 with HCl or NaOH solution and are got final product to the volume that needs preparation in the plastic channel.
2, Zn-Sn alloy electroplating bath preparation technology according to claim 1 is characterized in that also can adding micro-sea-gull washing composition in plating bath.
3, a kind of metallic surface coating Zn-Sn alloy electroplating bath is characterized in that the proportioning of each component is as follows:
ZnCl 220~45 grams per liter SnCl 22H 2O 5~20 grams per liters
C 10H 14N 2O 8Na 22H 2O 20~40 grams per liters
NH 4F or NaF 5~25 grams per liters
N (CH 2COOH) 35~10 grams per liters
All the other are distilled water or deionized water PH=2~5.5
4, Zn-Sn alloy electroplating bath according to claim 3 is characterized in that the best proportioning of each component is as follows:
ZnCl 235 grams per liter SnCl 22H 2O 10 grams per liters
C 10H 14N 2O 8Na 22H 2O 30 grams per liters
NH 4F or NaF 10 grams per liter N (CH 2COOH) 35 grams per liters
All the other are distilled water or deionized water PH=4.
CN95112541A 1995-11-14 1995-11-14 Zinc-tin alloy plating solution and preparation process thereof Expired - Fee Related CN1087361C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN95112541A CN1087361C (en) 1995-11-14 1995-11-14 Zinc-tin alloy plating solution and preparation process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN95112541A CN1087361C (en) 1995-11-14 1995-11-14 Zinc-tin alloy plating solution and preparation process thereof

Publications (2)

Publication Number Publication Date
CN1150183A CN1150183A (en) 1997-05-21
CN1087361C true CN1087361C (en) 2002-07-10

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CN95112541A Expired - Fee Related CN1087361C (en) 1995-11-14 1995-11-14 Zinc-tin alloy plating solution and preparation process thereof

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CN (1) CN1087361C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1039629A (en) * 1989-06-30 1990-02-14 天津通信广播公司 A kind of bright tin plating-Zinc alloy electroplating solution

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1039629A (en) * 1989-06-30 1990-02-14 天津通信广播公司 A kind of bright tin plating-Zinc alloy electroplating solution

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
电镀合金原理与工艺 第一版 1993. 8. 1 屠振密 国防工业出版社 *

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