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A kind of environment-friendly high-phosphorus electroless nickel plating solution and its application for hermetic glass-sealed terminal

A technology of electroless nickel plating solution and terminal, which is applied in the field of electroless plating. It can solve the problems of poor bonding force of steel needle plating, difficult welding of steel needle plating, environmental protection, etc., and achieve excellent welding, good stability of plating solution, and extended service life. The effect of longevity

Inactive Publication Date: 2016-05-18
深圳市迪凯鑫科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of electronic technology, metal glass packaging technology has been more and more widely used and put forward higher and higher requirements for quality. In addition to the requirements of high airtightness, high insulation, high Friction, easy welding and other properties also put forward higher requirements. In order to meet the above requirements, in addition to the excellent sintering technology of metallic glass, more and more stringent requirements are put forward for the surface treatment technology of sintered products. Among them, high phosphating nickel plating It is the most widely used; however, there are many deficiencies in the application of high-phosphorus electroless nickel plating in the market, such as the difficulty of plating on stainless steel needles (hereinafter referred to as steel needles) or the serious lag behind the plating of steel needles compared with iron covers, or nickel on glass, Or the bonding strength of the steel needle coating is poor, or the steel needle coating is difficult to weld, or it is not environmentally friendly, etc., it is difficult to have a product that meets the above requirements at the same time

Method used

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  • A kind of environment-friendly high-phosphorus electroless nickel plating solution and its application for hermetic glass-sealed terminal
  • A kind of environment-friendly high-phosphorus electroless nickel plating solution and its application for hermetic glass-sealed terminal
  • A kind of environment-friendly high-phosphorus electroless nickel plating solution and its application for hermetic glass-sealed terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The implementation process of the present invention is strictly controlled according to the terminal electroless plating process, including the processes of alkaline oxidation, acid etching, activation, neutralization, electroless nickel plating and air-drying of the sintered airtight glass-sealed terminal, wherein,

[0032] The process conditions of the alkaline oxidation treatment step: KMnO4: 70-80g / L, NaOH: 100-120g / L, the temperature is 88-95°C, and the time is 60-90min.

[0033] Process conditions for acid etching: hydrochloric acid with a concentration of 35-45%, rhodin which accounts for 3% of the mass of hydrochloric acid, the control temperature is 45-55°C, and the time is 7-9min.

[0034] Activation process conditions: concentration of 25-35% hydrochloric acid, control temperature of 45-55°C, time of 1.5-2min.

[0035] Neutralization process conditions: adjust the pH to 12-13 with ammonia water, and control the temperature at 60-80°C.

[0036] Water washing ...

Embodiment 2-3

[0049]Compared with Example 1, the difference is that the main and auxiliary complexing agent and the composite stabilizing brightener are adjusted, and the others remain unchanged. As in Table 3:

[0050] table 3

[0051] Material name

Example 2

Example 3

Lactic acid (g / L)

41.2

43.8

Trisodium citrate (g / L)

1.5

2.63

Malic acid(g / L)

13.2

15

Glycine (g / L)

8.3

11.2

[0052] SnCl(g / L)

0.27

0.3

Maleic anhydride (g / L)

0.26

0.33

DEP (mg / L)

3

5

OP-10(ml / L)

0.23

0.36

[0053] After testing (5L beakers simulated trial production of 30 samples and 5 samples each) and tests, the results are shown in Table 4:

[0054] Table 4

[0055]

[0056] With reference to Table 4, from the test situation, when using the configuration parameters to go offline, the strong activity of the plating solution is conducive to improving the plating speed, an...

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Abstract

The invention discloses an environment-friendly high-phosphorus chemical nickel plating solution for an airtight glass-sealed binding terminal. The environment-friendly high-phosphorus chemical nickel plating solution comprises the following active ingredients according to concentration: 25-27g / L nickel sulfate, 19-22g / L sodium hypophosphite, 20-23g / L sodium hydroxide, 41-44g / L lactic acid, 1.5-2.3g / L trisodium citrate, 13-15g / L malic acid, 8-12g / L glycine, 0.2-0.4ml / L OP-10, 0.26-0.3g / L stannous chloride, 0.26-0.34g / L maleic anhydride and 3-5mg / L N,N-diethylaminopropyne. The invention discloses a method for performing chemical plating by adopting the chemical nickel plating solution. A stainless steel needle and an iron cover can be simultaneously subjected to chemical nickel plating and be evenly plated, no nickel nuclear generated on sintered glass can be guaranteed, and the difficulty in keeping the smoothness and cleanness of the surface of glass can be solved.

Description

technical field [0001] The invention relates to an environment-friendly high-phosphorus electroless nickel plating solution for airtight glass-sealed terminals and its application, mainly used in electric connectors (airtight glass-sealed) made of stainless steel (needle) and iron cover through glass powder terminal) and belongs to the technical field of electroless plating. Background technique [0002] With the development of electronic technology, metal glass packaging technology has been more and more widely used and put forward higher and higher requirements for quality. In addition to the requirements of high airtightness, high insulation, high Friction, easy welding and other properties also put forward higher requirements. In order to meet the above requirements, in addition to the excellent sintering technology of metallic glass, more and more stringent requirements are put forward for the surface treatment technology of sintered products. Among them, high phosphati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36C23C18/18
Inventor 黄胜平
Owner 深圳市迪凯鑫科技有限公司
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