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Deposition activator for mechanical plating of Zn-Sn alloy

An activator, mechanical plating technology, applied in pressure inorganic powder plating, liquid chemical plating, metal material coating process, etc., can solve the problem of many bumps on the surface of the coating, increased process cost, poor flatness and smoothness of the coating and other problems, to achieve the effect of good use and decoration performance, and reduce the cost of the coating process

Inactive Publication Date: 2012-04-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the commercially available tin powder is generally coarse in particle size, it is easy to cause more bumps on the surface of the formed coating, resulting in poor flatness and smoothness of the coating; and the price of tin powder is much higher than that of zinc powder, resulting in a substantial increase in process costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 13 kg of stannous chloride, 45 kg of ferrous chloride, 5 kg of ammonium chloride, and 37 kg of phosphoric acid, and mix them well to obtain a deposition activator for mechanical zinc-tin alloy plating.

Embodiment 2

[0032] Take 55 kg of stannous sulfate, 11 kg of ferrous sulfate, 10 kg of diammonium hydrogen phosphate, 14 kg of ammonium sulfate, and 10 kg of phosphoric acid. After mixing evenly, add 100 kg of tap water and stir well to obtain mechanical galvanized tin alloy. Deposition activator.

Embodiment 3

[0034] Take stannous sulfate 12 kg, stannous chloride 10 kg, ferrous sulfate 19 kg, ferrous chloride 12 kg, ammonium chloride 5.5 kg, ammonium dihydrogen phosphate 2.5 kg, ammonium chloride 6.5 kg, ammonium sulfate 2.5 kg , 30 kg of phosphoric acid, after mixing evenly, add 100 kg of tap water, and after fully stirring, a deposition activator for mechanical galvanized tin alloy is obtained.

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Abstract

The invention provides a deposition activator for mechanical plating of a Zn-Sn alloy and a preparation method thereof, and belongs to the technical field of surface plating of steel materials. The technical scheme adopted by the invention is as follows: the deposition activator comprises the following components in percentage by mass: 13-55% of stannous salt, 11-45% of ferrous salt, 5-30% of ammonium salt and 10-50% of phosphoric acid. By adopting the deposition activator in the invention, Sn and Zn powder can be subjected to codeposition on the surface of a steel workpiece to form a Zn-Sn alloy plating through reduction deposition, and plating of a Sn-enriched plating with no Sn powder addition and low cost can be realized.

Description

[0001] technical field [0002] The invention relates to a deposition activator, in particular to a deposition activator for mechanical zinc-tin alloy plating and a preparation method thereof, belonging to the technical field of metal material surface coating. Background technique [0003] Mechanical Plating is a surface treatment process in which metal powder forms a coating on the surface of steel parts by using physical and chemical adsorption deposition and mechanical collision at normal temperature and pressure. At present, functional coating products such as Zn-Al, Zn-RE, Zn-Al-RE, and Zn-Sn alloy coatings have entered the field of industrial applications. [0004] Mechanical galvanized tin (Zn-Sn) alloy coatings show good service effects in marine corrosive environments because of their good corrosion resistance to salt water and salt water vapor. According to the relevant requirements of the Australian construction industry product standard AS3566.2-2002, in order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/04C23C18/16
Inventor 赵晓军何明奕刘丽王胜民彭增华常发
Owner KUNMING UNIV OF SCI & TECH
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