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

Preparation method of Mo-containing TiCN-based composite coating

A technology of composite coating and composite powder, which is applied in the direction of coating, metal material coating process, fusion spraying, etc., to achieve the effects of improving hardness and wear resistance, reducing wear, and increasing hardness

Inactive Publication Date: 2017-02-22
HEBEI UNIV OF TECH
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adds Mo components to the titanium-carbon composite spraying powder, which further improves the hardness of the TiCN ceramic coating, overcomes the shortcomings of the TiCN ceramic coating's insufficient wear resistance, and significantly enhances the combination of the TiCN ceramic coating and the substrate. strength

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
  • Preparation method of Mo-containing TiCN-based composite coating
  • Preparation method of Mo-containing TiCN-based composite coating
  • Preparation method of Mo-containing TiCN-based composite coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this example, a reactive plasma spraying process was used to prepare a micro-nano-scale multi-scale TiCN-Mo metal-based ceramic composite coating on the surface of the 45# steel substrate sample, and the main phase of the prepared coating was TiC 0.7 N 0.3 , Mo mainly exists in the form of Mo simple substance in the coating, partly as Mo 2 The form of C carbide exists.

[0036] The preparation method of this coating is as follows:

[0037] (1) Put the 45# steel substrate sample into the TPS-1 air pressure sandblasting machine, and perform sandblasting and roughening treatment on the surface. The abrasive particles are sucked into the nozzle, accelerated in the high-pressure airflow, and sprayed onto the surface of the substrate. , to obtain a clean and rough surface, thereby increasing the bonding force between the substrate and the coating;

[0038] (2) Using graphite as the carbon source, according to the mass ratio of Ti and C powders of 6:1, Ti and C composite...

Embodiment 2

[0047] In this example, a reactive plasma spraying process was used to prepare a micro-nano-scale multi-scale TiCN-Mo metal-based ceramic composite coating on the surface of the 45# steel substrate sample, and the main phase of the prepared coating was TiC 0.7 N 0.3 , Mo mainly exists in the form of Mo simple substance in the coating, partly as Mo 2 The form of C carbide exists.

[0048] The preparation method of the coating is as follows:

[0049] Graphite is used as the carbon source, and the mass ratio of Ti and C powder is 5:1. Before spraying the coating, Ni-10%wtAl self-fluxing alloy powder with a thickness of 110 μm is pre-sprayed on the surface of the steel substrate as the bottom layer (or bonding bottom layer), the quality of Mo powder is 30% of the quality of composite powder to obtain the original feeding composite powder of spraying, adjust operating current 500A, arc voltage 70V, carry out spraying, other steps are identical with example 1.

[0050] The SEM im...

Embodiment 3

[0056] In this example, a reactive plasma spraying process was used to prepare a micro-nano-scale multi-scale TiCN-Mo metal-based ceramic composite coating on the surface of a 304 stainless steel substrate sample, and the main phase of the prepared coating was TiC 0.7 N 0.3 , Mo mainly exists in the form of Mo simple substance in the coating, partly as Mo 2 The form of C carbide exists.

[0057] The preparation method of the coating is as follows:

[0058] Graphite is used as the carbon source, and the mass ratio of Ti and C powder is 5:1. Before spraying the coating, Ni-10%wtAl self-fluxing alloy powder with a thickness of 110 μm is pre-sprayed on the surface of the steel substrate as the bottom layer (or Adhesive bottom layer), the original feed composite powder that obtains spraying by the quality of Mo powder is 25% of the quality of composite powder, regulate working current 500A, arc voltage 70V, carry out spraying, other steps are identical with example 1.

[0059] T...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Granularityaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a Mo-containing TiCN-based composite coating. The method comprises the following steps that firstly, the surface of a substrate sample is roughened; secondly, Ti / C composite powder and Mo powder are mechanically blended to obtain original feed composite powder; thirdly, the surface of a substrate is pre-coated with Ni-10%wtAl self-refluxing alloy power, so that a base layer with the thickness being 90-120 [mu]m is obtained; and fourthly, the surface of the base layer is coated with the original feed composite powder, so that a TiCN-Mo metal-based ceramic composite coating with the thickness being 300-500 [mu]m is obtained. The plasma-spraying TiCN-Mo metal-based ceramic composite coating is high in hardness, good in abrasion resistance and corrosion resistance, suitable for workpieces, such as cutters, drill bits, moulds and the like in the fields of machinery, automobile making, aerospace and the like, under abrasive and corrosive environment conditions, and the plasma-spraying TiCN-Mo metal-based ceramic composite coating has extremely wide application prospects.

Description

technical field [0001] The invention relates to a preparation method of a sprayed coating, in particular to a plasma sprayed coating with high hardness and high wear resistance and a preparation method thereof. Background technique [0002] TiCN is a ternary superhard ceramic material, which is a solid solution of TiN and TiC. It has high hardness of ceramic material (HV=2472kg / mm 2 ) High chemical stability and wear resistance, good high temperature resistance, has been widely used in many fields such as mechanical chemical industry, automobile manufacturing and aerospace. [0003] At present, surface treatment methods such as plasma-assisted vapor deposition (PACVD), chemical vapor deposition (CVD) and ion implantation are commonly used to prepare TiCN. Although these methods have made outstanding progress in preparing TiCN coatings, due to the existence of these methods The deposition efficiency is low (2~10μm / h), the thickness of the film is too thin (10~50μm), the com...

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
IPC IPC(8): C23C4/134C23C4/06C23C4/08C23C4/02
CPCC23C4/06C23C4/02C23C4/08
Inventor 何继宁张迪陈凯秦艳芳张建新章凡勇
Owner HEBEI UNIV OF TECH
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