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

Method for preparing single-phase nanocrystalline co-ni-w alloy coating by electrodeposition

An alloy coating and nanocrystalline technology, which is applied in the field of metal surface treatment, can solve the problems of deterioration of corrosion resistance of the coating and so on.

Active Publication Date: 2017-10-24
SUZHOU UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the presence of the intermetallic compound Co3W 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 the 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
  • Method for preparing single-phase nanocrystalline co-ni-w alloy coating by electrodeposition
  • Method for preparing single-phase nanocrystalline co-ni-w alloy coating by electrodeposition
  • Method for preparing single-phase nanocrystalline co-ni-w alloy coating by electrodeposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take several 10×20×1.5mm cold-rolled low-carbon steel sheets, polish the surface with metallographic sandpaper, wash them with absolute ethanol and acetone, dry them, and put them in a desiccator for later use. The treated cold-rolled low carbon steel sheet will serve as a substrate for electrodeposition.

[0033] Use deionized water to prepare the plating solution, the composition of the plating solution: 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 . Adjust the pH of the plating solution to 7.5, and then allow the plating solution to stand and age for 36 hours.

[0034] The previously pretreated cold-rolled low-carbon steel sheet was used as the cathode, the platinum sheet was used as the anode, the distance between the cathode and the anode was 2cm, the electrodeposition temperature w...

Embodiment 2

[0038] The cold-rolled low carbon steel sheet was processed according to the method of Example 1.

[0039] Use deionized water to prepare the plating solution, the composition of the plating solution: CoSO 4 ·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 . Adjust the pH of the plating solution to 8, and then allow the plating solution to stand and age for 36 hours.

[0040] The previously pretreated cold-rolled low carbon steel sheet was used as the cathode, and the platinum sheet was used as the anode. The distance between the cathode and the anode was 5cm, the electrodeposition temperature was 40℃, and the average cathode current density was 120mA·cm. -2 , The duty cycle of the pulse current is 60%, the pulse frequency is 1200Hz, the ultrasonic power is 120W, the ultrasonic frequency is 100kHz, and th...

Embodiment 3

[0044] The cold-rolled low carbon steel sheet was processed according to the method of Example 1.

[0045] Deionized water was used to prepare the plating solution, and the composition of the plating solution was the same as in Example 1. Adjust the pH of the plating solution to 7.5, and then allow the plating solution to stand and age for 36 hours.

[0046] The previously pretreated cold-rolled low carbon steel sheet was used as the cathode, 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.

[0047] 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.

[0048] The heat preservation method is the same as in Example 1.

[0049] The analysis, characterization and performance testing methods of the samples are the same as in Example 1. Th...

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 by electrodeposition and a special plating solution. The plating solution contains CoSO4. C16H36ClN, Na3C6H5O7 2H2O, the balance is solvent deionized water, adjust the pH value of the plating solution to 7.0-9.5, and let it stand for aging; put it in an ultrasonic constant temperature bath, implement pulse electrodeposition; put it in an atmosphere protection furnace for heat preservation treatment , and finally obtain a single-phase nanocrystalline Co‑Ni‑W alloy coating. The present invention utilizes the Co, Ni, W ternary plating solution system, by combining the pulse electrodeposition hand and the ultrasonic field, prepares the Co-Ni-W alloy coating layer with high W content and is a Co solid solution single-phase nanocrystalline Co-Ni-W alloy, which has high hardness, Good performance of high corrosion resistance.

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, in particular to a method for preparing a single-phase nanocrystalline Co-Ni-W alloy coating on a metal surface by electrodeposition. Background technique [0002] In recent years, environmental protection departments have 6+ The control of waste liquid and exhaust gas has become more stringent, which limits the application of Cr (chromium) coatings. So people are committed to developing environmentally friendly coatings that can replace Cr coatings. 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 "replacement Cr" coating on the surface of special devices has attracted widespread attention. [0003] For Co (cobalt)-based W alloy coatings, the dominant factor that makes it possible to "repl...

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 Patents(China)
IPC IPC(8): C25D3/56C25D5/18
Inventor 盛敏奇吕凡吴彬翁文凭
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