Preparing technology of Ni-Fe-P alloy-based compound coating

A technology of composite coating and preparation process, applied in the direction of coating, electrolytic coating, etc., can solve the problems of restricting the use of amorphous materials, restricting the application of amorphous materials, and failure of local adiabatic shear band fracture, so as to reduce sensitivity, The effect of high raw material utilization and improved operability and controllability

Inactive Publication Date: 2017-02-08
刘志红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When amorphous materials are deformed at room temperature, it is easy to induce local adiabatic shear bands to form single shear cracks and suddenly fail, and they hardly show macroscopic plastic deformation characteristics, which greatly limits the application of amorphous materials as structural materials.
On the other hand, the structural characteristics of amorphous determine that it is in a thermodynamic metastable state, which also limits the use of amorphous materials at higher temperatures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of embodiment 1 amorphous / nanocrystalline Ni-Fe-P alloy / VC composite coating

[0030] Amorphous / nanocrystalline Ni-Fe-P alloy / VC composite coating, the substrate material is amorphous / nanocrystalline Ni-Fe-P alloy, the Ni content is 83.4wt% of the composite coating, and the Fe content is 10.6wt% of the composite coating , the P content is 5.3wt% of the composite coating, and the VC content is 0.7wt% of the composite coating.

[0031] Its electroplating process includes the following steps:

[0032] (1) Pretreatment of the metal surface to be plated: the plated material is made of No. 45 steel plate, the surface to be plated is machined successively, and then 20wt% sodium hydroxide solution is used in an ultrasonic cleaning machine to remove grease, and finally, 12wt% hydrochloric acid solution is used to remove The oxide film on the surface to be plated activates the metal surface;

[0033] (2) Activation treatment of solid particles: add 400 mesh VC parti...

Embodiment 2

[0038] In the amorphous / nanocrystalline Ni-Fe-P alloy / / TiC composite coating of this embodiment, the substrate material is an amorphous / nanocrystalline Ni-Fe-P alloy, the Ni content is 82.6wt% of the composite coating, and the Fe content is composite 8.1wt% of the coating, the P content is 7.2wt% of the composite coating, and the TiC content is 2.1wt% of the composite coating.

[0039] Its electroplating process includes the following steps:

[0040] (1) Pretreatment of the electroplating surface: Q235 steel plate is selected as the plating material, and the surface to be plated is first processed by milling, grinding, and grinding. Then, 20wt% sodium hydroxide solution is used to clean and remove grease. The oxide film on the plating surface activates the metal surface;

[0041] (2) Activation treatment of microparticles: Add 400-mesh TiC microparticles into 25wt% hydrochloric acid solution, heat to 65°C for 30min, wash with distilled water 3 times, and set aside;

[0042] ...

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PUM

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Abstract

The invention provides a preparing technology of a Ni-Fe-P alloy-based compound coating. The matrix material of the compound coating is amorphous/ nanocrystalline Ni-Fe-P alloy, the Ni content is 80-90wt% of the compound coating, the Fe content is 5-20wt% of the compound coating, and the P content is 5-15wt% of the compound coating. A second phase in the compound coating is a grain growth inhibitor, such as VC<1-x> and TiC, and the content of the second phase is 0-5wt% of the compound coating. The preparing technology of the compound coating comprises: 1, pretreating a metal plated surface; 2, activating second phase particles; 3, carrying out electric brushing plating on a Ni-Fe-P amorphous compound coating; and 4, carrying out partial crystallization transformation on the compound coating.

Description

technical field [0001] The invention relates to a surface electroplating process and a composite coating, in particular to a composite coating preparation process using an amorphous / nanocrystalline Ni-Fe-P alloy as a matrix. Background technique [0002] The particularity of the amorphous structure (short-range order) makes amorphous materials have excellent mechanical properties, corrosion resistance, and chemical activity compared with traditional metals. When amorphous materials are deformed at room temperature, they are easy to induce local adiabatic shear bands to form single shear cracks and fail suddenly, and they hardly show macroscopic plastic deformation characteristics, which greatly limits the application of amorphous materials as structural materials. On the other hand, the structural characteristics of amorphous determine that it is in a thermodynamic metastable state, which also limits the use of amorphous materials at higher temperatures. Therefore, using th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56C25D5/06C25D5/36C25D5/50C25D15/00
CPCC25D3/562C25D5/06C25D5/36C25D5/50C25D15/00
Inventor 刘志红
Owner 刘志红
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