CN106048500A

CN106048500A - Ni60B-WC-10Co nano-coating and preparation method thereof

Info

Publication number: CN106048500A
Application number: CN201610662351.8A
Authority: CN
Inventors: 程敬卿; 周乾坤
Original assignee: WUHU DINGHENG MATERIALS TECHNOLOGY Co Ltd
Current assignee: WUHU DINGHENG MATERIALS TECHNOLOGY Co Ltd
Priority date: 2016-08-13
Filing date: 2016-08-13
Publication date: 2016-10-26

Abstract

The invention relates to a Ni60B-WC-10Co nano-coating and a preparation method thereof. The Ni60B-WC-10Co nano-coating comprises, by mass, 20 to 25 parts of Ni60B, 50 to 70 parts of WC and 8 to 9 parts of 10Co. The preparation method comprises the following steps: (1) preparing Ni60B-WC-10Co nanospheres by using a dry grinding method; (2) preparing nano-powder from the nanospheres prepared in the step (1) by using a surfactant protection method; and (3) spraying the nano-powder prepared in the step (2) onto a 12CrNi3A carburization die steel matrix by using a high-velocity oxy-fuel spraying process so as to prepare the Ni60B-WC-10Co nano-coating. The Ni60B-WC-10Co nano-coating prepared in the invention is superior to traditional coating materials and has the characteristics of high hardness and good wear resistance; and the Ni60B-WC-10Co nano-coating and the preparation method thereof overcome the problems of poor wear resistance and low corrosion resistance of conventional coatings and improve the microstructure and structure of a coating on the surface of a material.

Description

A kind of Ni60B-WC-10Co nano coating and preparation method thereof

Technical field

The present invention relates to thermal spraying material technical field, a kind of Ni60B-WC-10Co nano coating and system thereof Preparation Method.

Background technology

Thermal spraying is a kind of surface strengthening technology, is the important component part of surface engineering technology, always China's emphasis The new technique project promoted.It is to utilize certain thermal source (such as electric arc, plasma spraying or combustion flame etc.) by powder or silk The metal of shape or nonmetallic materials are heated to melted or semi-molten state, then stay itself or compressed air with a constant speed by flame Degree is ejected into pretreated matrix surface, deposits and forms a kind of technology of the face coat with various function.

Along with the progress of spraying technology, equipment is the most advanced, and quality is more and more higher, and the development of existing sprayed on material is the most stagnant After, it is impossible to give full play to the use potentiality of spraying equipment, need the material prescription that coating quality is more excellent in extreme circumstances, Under the use standard that equipment can reach, new material and the spraying of more scientific and reasonable proportioning is used to have more excellent physical The coating of performance becomes one of research direction.

Summary of the invention

Poor in order to solve conventional coatings wearability, the problems such as hardness is relatively low, the present invention provides a kind of Ni60B-WC-10Co Nano coating and preparation method thereof.

The technical problem to be solved realizes by the following technical solutions:

A kind of Ni60B-WC-10Co nano coating, the mass fraction of its component and each component is that Ni60B accounts for 10-25 part, WC Account for 50-70 part, 10Co accounts for 8-9 part.

The preparation method of a kind of Ni60B-WC-10Co nano coating, comprises the following steps:

(1) dry type comminuting method is used to prepare the nanosphere of Ni60B-WC-10Co；

(2) surfactant Protection Code is used to prepare nanometer powder the nanosphere prepared in step (1)；

(3) use HVAF technique at 12CrNi3A carburizing mould the nanometer powder prepared in step (2) Ni60B-WC-10Co nano coating is prepared in steel matrix.

The invention has the beneficial effects as follows: the nano material of gained of the present invention is better than conventional washcoat material, there is hardness high, resistance to The feature that mill property is good, solves the existing problem that tungsten carbide coating wearability is poor, corrosion resistance is relatively low, improves material surface The microstructure of coating, structure, make tungsten carbide coating hardness improve 70%, makes tungsten carbide coating elastic modelling quantity improve 9%- 15%, thus the overall anti-wear performance improving material surface, have remarkable effect to the comprehensive mechanical property improving workpiece.

Detailed description of the invention

In order to make technological means that the present invention realizes and creation characteristic be easy to understand, below the present invention is explained further State.

Embodiment one:

A kind of Ni60B-WC-10Co nano coating, the mass fraction of its component and each component is that Ni60B accounts for 10 parts, WC accounts for 50 parts, 10Co account for 8 parts.

Embodiment two:

A kind of Ni60B-WC-10Co nano coating, the mass fraction of its component and each component is that Ni60B accounts for 25 parts, WC accounts for 70 parts, 10Co account for 9 parts.

The preparation method of a kind of Ni60B-WC-10Co nano coating is identical with embodiment one.

Embodiment three:

A kind of Ni60B-WC-10Co nano coating, the mass fraction of its component and each component is that Ni60B accounts for 15 parts, WC accounts for 60 parts, 10Co account for 8.5 parts.

Use supersonic spray coating technology to prepare Ni60B-WC-10Co nanometer on 12CrNi3A carburizing mould steel matrix to be coated with Layer, the matrix with described coating and the bond strength of matrix without described coating, microhardness, the porosity and wear-resistant grain mill Damage performance comparison experimental result and be shown in Table 1:

Table 1Ni60B-WC-10Co nano coating is tied with without coating 12CrNi3A carburizing mould steel substrate performance contrast experiment Really:

Experimental group is numbered	Porosity (AREA%)	Bond strength (MPa)	Microhardness (HV)
				1	0.505	72.5	1028
2	0.491	75.1	1022
				3	0.518	73.6	1031
Meansigma methods	0.505	73.7	1027
				Contrast groups	0.638	62.2	892

Supersonic spray coating technology is used to prepare Ni60B-WC-10Co coating, band on 12CrNi3A carburizing mould steel matrix The wear extent contrast and experiment having the matrix of described coating and the matrix without described coating is shown in Table 2:

Table 2Ni60B-WC-10Co nano coating and the wear extent contrast and experiment of 12CrNi3A carburizing mould steel matrix:

Experimental group is numbered	Before abrasion (g)	After abrasion (g)	Wear extent (g)
				1	58.1035	58.1004	0.0031
2	58.3591	58.3563	0.0028
				3	58.7365	58.7339	0.0026
Contrast groups	58.6968	58.6904	0.0064

From Tables 1 and 2, the excellent combination property of Ni60B-WC-10Co nano coating, wearability is good.

The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The technology of the industry The personnel simply present invention it should be appreciated that the present invention is not restricted to the described embodiments, described in above-described embodiment and description Principle, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these change and Improvement both falls within scope of the claimed invention.Claimed scope is by appending claims and equivalence thereof Thing defines.

Claims

1. a Ni60B-WC-10Co nano coating, it is characterised in that: the mass fraction of its component and each component is that Ni60B accounts for 10-25 part, WC accounts for 50-70 part, 10Co accounts for 8-9 part.

2. the preparation method of a Ni60B-WC-10Co nano coating, it is characterised in that: comprise the following steps:

(3) use HVAF technique at 12CrNi3A carburizing mould base steel the nanometer powder prepared in step (2) Ni60B-WC-10Co nano coating is prepared on body.