Electroless plating solution for Ni-Sn-P alloy plating layer, and electroless plating layer

A technology of chemical plating solution and alloy coating, which is applied in the field of chemical plating, can solve problems such as the instability of formula plating solution, and achieve the effects of convenient preparation, stable deposition rate, and avoidance of failure

Pending Publication Date: 2020-09-11
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF12 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming that the existing Ni-Sn-P alloy plating solution plating solution plating solution is unstable, and provide a kind of Ni-Sn-P alloy plating solution and chemical plating layer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electroless plating solution for Ni-Sn-P alloy plating layer, and electroless plating layer
  • Electroless plating solution for Ni-Sn-P alloy plating layer, and electroless plating layer
  • Electroless plating solution for Ni-Sn-P alloy plating layer, and electroless plating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of electroless plating bath of Ni-Sn-P alloy coating, the total volume of electroless plating bath is 1L meter, and composition is as follows:

[0042] 35g NiCl 2 .6H 2 O, 12g Na 2 SnO 3, 24 g NaH 2 PO 2 , 113g composite complexing agent, 6.9mg composite stabilizer, 8g accelerator, 1.3g NaOH, the balance is water;

[0043] Wherein, when configuring the plating solution, first dissolve the sodium stannate completely in a 6% NaOH solution at 90°C, then cool it to room temperature and mix it with other solutions to prevent the sodium stannate from being hydrolyzed to form a water-insoluble hydroxide. Tin thereby reducing the effective concentration of tin salts in the bath.

[0044] Among them, by weight percentage, the composite complexing agent components are: sodium citrate 61.9%, lactic acid 29.2%, triethanolamine 8.9%; composite stabilizer components are: thiourea 4.3%, ceric sulfate 36.2%, cis-butyl Acenoic acid 59.5%; Accelerator is glycine.

[0045] ...

Embodiment 2

[0063] A kind of electroless plating bath of Ni-Sn-P alloy coating, the total volume of electroless plating bath is 1L meter, and composition is as follows:

[0064] 30g NiCl 2 .6H 2 O, 8g Na 2 SnO 3 , 20g NaH 2 PO 2 , 110g composite complexing agent, 6.2mg composite stabilizer, 5g accelerator, 1.4g NaOH, and the balance is water;

[0065] Among them, when configuring the plating solution, first dissolve the sodium stannate completely in a 15% NaOH solution at 90°C, then cool it to room temperature and mix it with other solutions to prevent the sodium stannate from being hydrolyzed to form insoluble hydrogen Tin oxide thereby reduces the effective concentration of tin salts in the bath.

[0066] Among them, by weight percentage, the composite complexing agent components are: sodium citrate 61.9%, lactic acid 29.2%, triethanolamine 8.9%; composite stabilizer components are: thiourea 4.3%, ceric sulfate 36.2%, cis-butyl The olefinic acid is 59.5%; the accelerator is glyci...

Embodiment 3

[0069] A kind of electroless plating bath of Ni-Sn-P alloy coating, the total volume of electroless plating bath is 1L meter, and composition is as follows:

[0070] 50g NiCl 2 .6H 2 O, 14g Na 2 SnO 3 , 30g NaH 2 PO 2 , 120g composite complexing agent, 7.4mg composite stabilizer, 10g accelerator, 1.5g NaOH, the balance is water;

[0071] Among them, when configuring the plating solution, first dissolve the sodium stannate completely in a 20% NaOH solution at 90°C, then cool it to room temperature and mix it with other solutions to prevent the sodium stannate from being hydrolyzed to form insoluble hydrogen Tin oxide thereby reduces the effective concentration of tin salts in the bath.

[0072] Among them, by weight percentage, the composite complexing agent components are: sodium citrate 61.9%, lactic acid 29.2%, triethanolamine 8.9%; composite stabilizer components are: thiourea 4.3%, ceric sulfate 36.2%, cis-butyl Acenoic acid 59.5%; Accelerator is glycine.

[0073] ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Self-corrosion current densityaaaaaaaaaa
Self-corrosion current densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses an electroless plating solution for an Ni-Sn-P alloy plating layer, and an electroless plating layer, and belongs to the field of electroless plating. The electroless plating solution is prepared from nickel chloride hexahydrate, sodium stannate, sodium hypophosphite, an accelerant, a compound stabilizer, a compound complex agent, a pH regulator and water. Under the complexing action of the compound complex agent, in the process of generating an oxidation-reduction reaction on the surface of a substrate, Sn4+ reacts while permeating under the action of the compound complex agent to avoid the situation that the Sn4+ completely permeates in the solution to participate in the reaction, and consequently the reaction is out of control; on the other hand, the oxidation-reduction reaction is also generated in the plating solution, under the complexing action of the compound complex agent, the oxidation-reduction reaction of the Sn4+ in the plating solution is preventedto avoid the situation that suspended matter and precipitates are generated in the plating solution, and consequently the plating solution loses efficacy too early; and the plating layer is formed byaccumulating obvious amorphous cellular structures and is compact in structure, and defects and cracks are avoided.

Description

technical field [0001] The invention belongs to the field of electroless plating, in particular to an electroless plating solution and an electroless plating layer of a Ni-Sn-P alloy coating. Background technique [0002] With the in-depth exploration and development of oil and gas resources, the production conditions of oil and gas fields are becoming more and more complex. Severe conditions such as ultra-high temperature, high pressure, high hydrogen sulfide content and high salinity pose a great threat to the service safety of oil casings. The common Ni-P coating has good mechanical properties, corrosion resistance and wear resistance, but there are many problems in serviceability in the stress-chemical interaction environment of oil and gas well strings, mainly due to the high porosity of the coating , poor toughness, poor sulfur resistance, etc. Under the stress-chemical interaction, the conventional Ni-P coating is prone to cracking, which leads to severe corrosion fa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23C18/50C23C18/18
CPCC23C18/50C23C18/1844
Inventor 袁军涛袁曦付安庆李循迹巨亚锋江晶晶李亚军罗有刚李先明梁万银任康尹成先
Owner BC P INC CHINA NAT PETROLEUM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap