Unlock instant, AI-driven research and patent intelligence for your innovation.

Nano carbide reinforced ni-w-p composite coating and its plating process

A composite coating and carbide technology, applied in the field of chemical composite plating, to achieve the effect of smooth coating, no pores and good stability

Active Publication Date: 2018-07-31
HOHAI UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, WC enhanced Ni-W-P composite coating has not been reported in the literature so far.

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
  • Nano carbide reinforced ni-w-p composite coating and its plating process
  • Nano carbide reinforced ni-w-p composite coating and its plating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of nano WC composite plating Ni-W-P alloy plating solution, the parameter of this plating solution and the content of each component are as follows: nickel sulfate 20 g / L, sodium dihydrogen phosphite 22 g / L, sodium citrate 15 g / L , lactic acid 9 g / L, sodium tungstate 10 g / L, succinic acid 7 g / L, thiourea 1 mg / L, sodium lauryl sulfate 1 g / L, saccharin 0.5 g / L, nano WC powder 5 g / L. The solvent is distilled water, the volume of the solution is the total volume of the solute and the solvent after mixing, the pH value is 7.5, and the temperature is 85°C.

[0027] The plating process of nano WC composite plating Ni-W-P alloy plating solution specifically comprises the following steps:

[0028] (1) Sample surface pretreatment: The sample is chemically degreased by alkaline solution, which includes sodium hydroxide 30 g / L, sodium silicate 20 g / L, sodium carbonate 25 g / L and sodium phosphate 20 g / L, The solvent is water, the temperature is 60~90°C, the alkaline chemic...

Embodiment 2

[0035] A kind of nano WC composite plating Ni-W-P alloy plating solution, the parameter of this plating solution and the content of each component are as follows: nickel sulfate 30 g / L, sodium dihydrogen phosphite 25 g / L, sodium citrate 20 g / L , lactic acid 10 g / L, sodium tungstate 15 g / L, succinic acid 10 g / L, thiourea 1 mg / L, sodium lauryl sulfate 1.5 g / L, saccharin 0.8 g / L, nano WC powder 10g / L. The solvent is distilled water, the volume of the solution is the total volume of the solute and the solvent after mixing, the pH value is 7.5, and the temperature is 85°C.

[0036] The plating process of nano WC composite plating Ni-W-P alloy plating solution specifically comprises the following steps:

[0037] (1) Sample surface pretreatment: same as Example 1;

[0038] (2) Preparation of pre-plating solution: The difference from Example 1 is that the pH value is adjusted to 7.8, heated to 88°C and kept warm;

[0039] (3) Sample activation treatment: same as Example 1;

[0040...

Embodiment 3

[0044] A kind of nano WC composite plating Ni-W-P alloy plating solution, the parameter of this plating solution and the content of each component are as follows: nickel sulfate 25 g / L, sodium dihydrogen phosphite 20 g / L, sodium citrate 16 g / L , lactic acid 7 g / L, sodium tungstate 15 g / L, succinic acid 7 g / L, thiourea 1.5 mg / L, sodium lauryl sulfate 1.5 g / L, saccharin 0.8 g / L, nano WC powder 10 g / L, the solvent is distilled water, the solution volume is the total volume of the mixed solute and solvent, the pH value is 7.8, and the temperature is 87°C.

[0045] The plating process of nano WC composite plating Ni-W-P alloy plating solution specifically comprises the following steps:

[0046] (1) Sample surface pretreatment: same as Example 1;

[0047] (2) Prepare the pre-plating solution: the difference from Example 1 is that the pH value is adjusted to 7.8, and the temperature is heated to 87° C. to maintain a constant temperature.

[0048] (3) Sample activation treatment: sa...

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 nano-sized-WC-strengthened Ni-W-P composite coating and a plating process of the nano-sized-WC-strengthened Ni-W-P composite coating. A pre-plating solution is composed of 20 g / L-35 g / L of plating solution main salt, 20 g / L-30 g / L of a reducing agent, 22 g / L-45 g / L of a compound complexing agent, 10 g / L-20 g / L of a tungsten source, 7 g / L-15 g / L of an accelerator, 1 mg / L-2 mg / L of a stabilizer and 0.5 g / L-1 g / L of saccharin; distilled water serves as a solvent; and nano-sized-WC dispersion liquid is added to the pre-plating solution to serve as the plating solution, and the final concentration of nano-sized WC in the plating solution ranges from 5 g / L to 15 g / L. The plating process includes the steps that the pre-plating solution is prepared, a sample obtained after oil removal, rust removal and activating treatment are conducted is pre-plated for 0.5 hour to 0.6 hour, the nano-sized-WC dispersion solution is added to the pre-plating solution, plating is continued, and the total-plating time ranges from 1.5 hours to 2 hours; and the plated piece is placed in the protective atmosphere, the temperature of 400 DEG C to 450 DEG C is kept for 1 hour to 1.5 hours, the plated piece is cooled with a furnace, and the plated piece is taken out. The obtained coating is good in binding force, the coating thickness is uniform, compactness is good, hardness is high, wear resistance and corrosion resistance are high, and the influence of the shape on the plated piece is eliminated.

Description

technical field [0001] The invention relates to the technical field of chemical composite plating, in particular to a chemical plating Ni-W-P / nanometer WC plating solution and a plating process thereof. Background technique [0002] The high-performance Ni-P alloy electroless plating process is a new type of surface protection and surface strengthening technology developed rapidly in recent years because of its simple operation, low price, small equipment investment, strong universality and excellent comprehensive coating. Performance and other advantages, and widely used in petrochemical, petroleum refining, electronic energy, automobile, chemical and other industries, but the disadvantages are pinholes, pits formed during the plating process, and damage to the coating by external forces during use, etc. , often causes the coating to form galvanic corrosion in the corrosive medium, so that the coating not only fails to protect the substrate, but accelerates the destruction ...

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): C23C18/16C23C18/18C23C18/36
CPCC23C18/1662C23C18/1666C23C18/18C23C18/36
Inventor 骆鸿苏怀智金雷
Owner HOHAI UNIV