CN104233160B

CN104233160B - A kind of Mo Cu B coatings and preparation method thereof

Info

Publication number: CN104233160B
Application number: CN201410465186.8A
Authority: CN
Inventors: 程敬卿; 薛卫昌
Original assignee: Wuhu Dinghan Remanufacturing Technology Co Ltd
Current assignee: Wuhu Dinghan Remanufacturing Technology Co Ltd
Priority date: 2014-09-11
Filing date: 2014-09-11
Publication date: 2017-03-15
Anticipated expiration: 2034-09-11
Also published as: CN104233160A

Abstract

The present invention relates to a kind of Mo Cu B coatings and preparation method thereof, including following components：Mo, Cu, B, auxiliary agent and trace element, the mass percent shared by each component are as follows：Mo be 12%～25%, Cu be 18%～32%, B be 40%～56%, auxiliary agent is 2%, and trace element is 1%, the step of its preparation method is：First Mo, Cu, B material are obtained by nanosphere using chemical meteorology deposition legal system, then trace element and the prepared nanometer powder of auxiliary agent be mixed with using activating agent Protection Code, are sprayed on formation coating on matrix finally by plasma spraying equipment.The present invention solves the problems, such as that existing coating abrasion performance is poor, corrosion resistance is relatively low, improve microstructure, the structure of material surface coating, so as to the overall anti-wear performance for improving material surface, while also the comprehensive mechanical property to improving improvement property has obvious action.

Description

A kind of Mo-Cu-B coatings and preparation method thereof

Technical field

The present invention relates to spray-on coating technical field, specifically a kind of Mo-Cu-B coatings and preparation method thereof.

Background technology

Parts on many equipment can be gradually worn out with motion, are caused and normally cannot be used, and need timely to enter Row is changed, and for the not serious parts that wear and tear, is usually taken the mode of spraying to be repaired, is realized remanufacturing, after reparation The wearability of parts, hardness and intensity are further improved.And existing coating is existed, and wearability is poor, corrosion resistant The relatively low problem of corrosion, service life are shorter, and having influence on the normal use of matrix, and frequently change matrix wastes time and energy, and ties up Repair, safeguard relatively costly.

Content of the invention

The technical problem to be solved is to provide a kind of Mo-Cu-B coatings and preparation method thereof.

The technical problem to be solved employs the following technical solutions to realize：

A kind of Mo-Cu-B coatings, including following components：Mo, Cu, B, auxiliary agent and trace element, shared by each component Mass percent is as follows：

It is that 18%～32%, B is 40%～56% that Mo is 12%～25%, Cu, and auxiliary agent is 2%, and trace element is 1%.

The micro- material includes Ni, Cr, Si.

The auxiliary agent is TiO₂, as other materials hardness is higher, poor toughness, so with the addition of auxiliary agent 2%TiO2 Toughness is improved, can be bent under 180 DEG C or so working environments and not ruptured.

A kind of preparation method of Mo-Cu-B coatings, the step is：Chemical meteorology deposition is adopted to Mo, Cu, B material first Legal system obtains nanosphere, then is mixed with trace element using activating agent Protection Code and auxiliary agent is obtained nanometer powder, finally by wait from Sub- spraying equipment is sprayed on formation coating on matrix.

The invention has the beneficial effects as follows：The present invention solves the problems, such as that existing coating abrasion performance is poor, corrosion resistance is relatively low, Microstructure, the structure of material surface coating being improved, makes coating hardness improve 60%, elastic modelling quantity improves 8.9%～ 15.4%, so as to the overall anti-wear performance for improving material surface, while also the comprehensive mechanical property to improving improvement property has significantly Effect.

Specific embodiment

In order that the technological means realized of the present invention, creation characteristic, reached purpose and effect are easy to understand, below right The present invention is expanded on further.

Embodiment one：

Mo be 12%, Cu be 29%, B be 56%, auxiliary agent is 2%, trace element be 1%.

The micro- material includes Ni, Cr, Si.

The auxiliary agent is TiO₂, as other materials hardness is higher, poor toughness, so with the addition of auxiliary agent 2%TiO₂To carry High tenacity, can bend under 180 DEG C of working environments and not rupture.

Embodiment two：

Mo be 25%, Cu be 18%, B be 54%, auxiliary agent is 2%, trace element be 1%.

The micro- material includes Ni, Cr, Si.

A kind of preparation method of Mo-Cu-B coatings is identical with embodiment one.

Embodiment three：

Mo be 19%, Cu be 32%, B be 46%, auxiliary agent is 2%, trace element be 1%.

The micro- material includes Ni, Cr, Si.

Example IV：

Mo be 25%, Cu be 32%, B be 40%, auxiliary agent is 2%, trace element be 1%.

The micro- material includes Ni, Cr, Si.

The auxiliary agent is TiO₂, as other materials hardness is higher, poor toughness, so with the addition of auxiliary agent 2%TiO₂To carry High tenacity, can bend under 180 DEG C or so working environments and not rupture.

In order to prove the actual effect of the present invention, spy is made in 12CrNi3A mould steel matrix using plasma spray coating process Standby Mo-Cu-B coatings.After by embodiment one to example IV enforcement, the bond strength of coating, microhardness, the porosity is tested And abrasive wear resistance.And Phase Structure Analysis have been carried out to dusty spray Ji coating using XRD, use SEM Coating morphology before and after dusty spray, abrasive wear is observed.

Present invention uses Mo-Cu-B ultra-fine cemented carbide composites, to the institutional framework of composite, density, resist The performances such as curved intensity are studied.As a result show：Improve the microstructure of material surface coating, structure, apply tungsten carbide Layer hardness improves 50%, and elastic modelling quantity improves 8.9%～15.4%, so as to the overall anti-wear performance for improving material surface, Also the comprehensive mechanical property to improving improvement property has obvious action.

Experimental result is as follows：

Numbering	Porosity (AREA%)	Bond strength MPa	Microhardness (HV)
				Embodiment one	0.663	77.6	1263
Embodiment two	0.598	68.1	1236
				Embodiment three	0.546	68.7	1159
Example IV	0.612	73.6	1254
				Mean value	0.604	72	1228
Contrast groups	0.825	60	799

Wherein, contrast groups are 12CrNi3A matrixes.

In addition, the present invention has carried out three groups of wear extent test experiments, in per group of experiment, embodiment one is tested to enforcement Wear extent in example four, average data is counted, and is contrasted with contrast groups, and related data is as follows：

Numbering	Mean value (g) before abrasion	Mean value (g) after abrasion	Wear extent mean value (mg)
				Experiment 1	65.3256	65.3247	9
Experiment 2	65.4785	65.4777	8
				Experiment 3	65.2569	65.2558	11
Contrast groups	65.5698	65.5513	185

From above-mentioned experimental data, the wear extent of 12CrNi3A matrixes is 19 times of Mo-Cu-B coatings, it was confirmed that this Preferably, coefficient of friction is minimum for the bright Mo-Cu-B composite coatings wearability being related to.Hardness ranges up to HRC74.Density is reachable 6.3g/cm³, coating thickness is up to 1 millimeter, it is adaptable to plasma spraying, can have with spraying steel：2Cr13、4Cr13、9Cr18、 4Cr5W2VSi etc..The also more sprayable workpiece higher to hardness requirement or tool steel surface are processed, to improve surface of the work Hardness and wearability.Nano material according to the present invention is better than conventional washcoat material, hardness is high, wearability is good, bond strength is high, High temperature resistant, corrosion-resistant.This show plasma spraying prepare WC-CBN coatings have excellent abrasive wear resistance, hardness and Toughness.There is the characteristics such as fusing point is high, density is low and coefficient of thermal expansion is little, be modern mechanical manufacturing and wear-out part reparation again important Material.

General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry The simply present invention of the personnel it should be appreciated that the present invention is not limited by step embodiment, described in step embodiment and specification Principle, without departing from the spirit and scope of the present invention, the present invention also have various changes and modifications, these change and Improvement is both fallen within scope of the claimed invention.The claimed scope of the invention is by appending claims and its equivalent Thing is defined.

Claims

1. a kind of Mo-Cu-B coatings, it is characterised in that：Including following components：Mo, Cu, B, auxiliary agent and trace element, each group Mass percent shared by point is as follows：

It is that 18%～32%, B is 40%～56% that Mo is 12%～25%, Cu, and auxiliary agent is 2%, and trace element is 1%, described Auxiliary agent is TiO₂.

2. a kind of Mo-Cu-B coatings according to claim 1, it is characterised in that：The micro- material include Ni, Cr、Si.

3. a kind of preparation method of Mo-Cu-B coatings, it is characterised in that：The step is：First to Mo, Cu, B material using chemistry Vapor phase deposition legal system obtains nanosphere, then is mixed with trace element and the prepared nanometer powder of auxiliary agent using activating agent Protection Code, finally Formation coating on matrix is sprayed on by plasma spraying equipment.