Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparing method for Co-Ni-W alloy coating and special plating solution

A technology of alloy coating and plating solution, which is applied in the field of metal surface treatment and can solve problems such as deterioration of coating corrosion resistance

Inactive Publication Date: 2017-12-12
SUZHOU UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the intermetallic Co 3 The presence of W will increase the hardness of the Co-W alloy coating, and it will become the initiation zone of pitting corrosion in a corrosive environment, resulting in deterioration of the corrosion resistance of the coating.

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
  • Preparing method for Co-Ni-W alloy coating and special plating solution
  • Preparing method for Co-Ni-W alloy coating and special plating solution
  • Preparing method for Co-Ni-W alloy coating and special plating solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take a number of cold-rolled low-carbon steel plates of 10×20×1.5mm, polish the surface with metallographic sandpaper, wash them with absolute ethanol and acetone in sequence, dry them, and put them in a desiccator for later use. The treated cold-rolled low-carbon steel plate will serve as a substrate for electrodeposition.

[0034] Use deionized water to prepare the plating solution, the composition of the plating solution is: CoSO 4 ·7H 2 O 0.4mol L -1 , NiSO 4 ·6H 2 O0.1mol L -1 , Na 2 WO 4 2H 2 O 0.1mol L -1 , H 3 BO 3 0.06mol·L -1 , NH 4 Cl 0.01mol L -1 , Na 2 SO 4 10H 2 O 0.03mol L -1 , C 16 h 36 ClN 0.02mol L -1 , Na 3 C 6 h 5 o 7 2H 2 O 0.2mol L - 1 NH 4 CH 2 NS 2 0.02mol·L -1 , NaC 6 h 11 o 7 0.1mol·L -1 , N 2 h 4 ·H 2 O 0.05mol L -1 . The pH value of the plating solution was adjusted to 7.5, and the plating solution was heated to reflux at 105° C. for 4 hours with microwaves, and then left to age at 60° C. for 36 hour...

Embodiment 2

[0039] The cold-rolled low-carbon steel plate was processed according to the method of Example 1.

[0040] Use deionized water to prepare the plating solution, the composition of the plating solution is: CoSO4 ·7H 2 O 0.5mol L -1 , NiSO 4 ·6H 2 O0.15mol L -1 , Na 2 WO 4 2H 2 O 0.2mol L -1 , H 3 BO 3 0.06mol·L -1 , NH 4 Cl 0.02mol L -1 , Na 2 SO 4 10H 2 O 0.03mol L -1 , C 16 h 36 ClN 0.03mol L -1 , Na 3 C 6 h 5 o 7 2H 2 O 0.2mol L - 1 NH 4 CH 2 NS 2 0.02mol·L -1 , NaC 6 h 11 o 7 0.1mol·L -1 , N 2 h 4 ·H 2 O 0.05mol L -1 . The pH value of the plating solution was adjusted to 8, and the plating solution was heated to reflux at 105° C. for 4 hours by microwave, and then left to age at 60° C. for 36 hours.

[0041] The previously pretreated cold-rolled low-carbon steel plate was used as the cathode, and the platinum sheet was used as the anode. The distance between the cathode and the anode was 5 cm, the electrodeposition temperature was 40...

Embodiment 3

[0045] The cold-rolled low-carbon steel plate was processed according to the method of Example 1.

[0046] Use deionized water to prepare the plating solution, and the composition of the plating solution is the same as in Example 1. The pH value of the plating solution was adjusted to 7.5, and the plating solution was heated to reflux at 105° C. for 4 hours with microwaves, and then left to age at 60° C. for 36 hours.

[0047] The previously pretreated cold-rolled low-carbon steel plate was used as the cathode, and the platinum sheet was used as the anode. The distance between the cathode and the anode was 5 cm, and the electrodeposition temperature was 40°C.

[0048] The average cathode current density, pulse current duty ratio, pulse frequency, ultrasonic power, ultrasonic frequency, and electrodeposition time of the electrodeposition process are the same as in Example 2.

[0049] Insulation heat treatment method is the same as embodiment 1.

[0050] The analysis, characte...

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

No PUM Login to View More

Abstract

The invention discloses a method for preparing a single-phase nanocrystalline Co-Ni-W alloy coating through electro-deposition and a special plating solution. The plating solution comprises CoSO4.7H2O, NiSO4.6H2O, Na2WO4.2H2O, H3BO3, NH4Cl, Na2SO4.10H2O, C16H36ClN, Na3C6H5O7.2H2O, NH4CH2NS2, NaC6H11O7, N2H4.H2O and the balance solvent deionized water, the PH value of the plating solution is adjusted to range from 7.0 to 9.5, and standing ageing is conducted; the plating solution is placed in an ultrasonic constant-temperature tank, and pulse electrodeposition is implemented; the coating is placed in an atmosphere protection furnace to be subjected to heat preservation treatment, and the single-phase nanocrystalline Co-Ni-W alloy coating is obtained. Through combination of pulse electrodeposition and an ultrasonic field, the Co solid solution single-phase nanocrystalline Co-Ni-W alloy coating high in W content is prepared, and good properties of high hardness and high corrosion resistance are achieved.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and relates to a method for preparing an alloy coating on a metal surface and a plating solution, in particular to a method and a dedicated method for preparing a single-phase nanocrystalline Co-Ni-W alloy coating on a metal surface by electrodeposition. Plating solution. Background technique [0002] In recent years, the environmental protection department 6+ The stricter control of waste liquid and exhaust gas restricts the application of Cr (chromium) coating. Therefore, people are committed to developing an environmentally friendly coating that can replace the Cr coating. Among many metal materials, W (tungsten) alloy exhibits excellent properties such as high melting point, high hardness and high corrosion resistance. The use of W alloy as a "substitute Cr" coating on the surface of special devices has attracted widespread attention. [0003] For Co (cobalt)-based W alloy ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56
CPCC25D3/562
Inventor 吕凡盛敏奇李洪玮
Owner SUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com