Method for forming ceramic coat on metallic surface by argon-arc welding assisted self-propagating

A technology of ceramic coating and metal surface, which is applied in the field of material surface engineering, can solve the problems of high price of argon and helium, easy peeling of ceramic layer, and reduce production cost, so as to achieve small burning loss and sputtering and easy control , The effect of reducing the cost of equipment

Inactive Publication Date: 2009-06-24
江阴东大新材料研究院
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 6) The current carrying (current) capacity of the tungsten electrode is low, and the production efficiency is not high
[0011] 7) The price of argon and helium is relatively high, which is not conducive to reducing production costs
However, preh

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] The details of the present invention will be further described below in conjunction with specific embodiments of the present invention.

[0039] On a 30×50mm, 6mm thick 45# steel wear-resistant block, the surface is required to be coated with a 0.2mm thick TiCNi ceramic coating, and the metal intermediate layer is Ni, which is prepared by the method of the present invention. The steps are as follows:

[0040] Step one, ingredients

[0041] The coating material is composed of Ti+C+Ni, respectively take 12.8g of Ti powder and 3.2g of C powder, which are commercially supplied powders with a particle size of 200-270 mesh, and the additive is Ni powder, take 4g, and the total weight is 20g.

[0042] Step two, mix

[0043] The powder prepared in step 1 is uniformly mixed for 2 to 4 hours to prepare the required mixed powder.

[0044] Step three, coating

[0045] The surface of the workpiece is pickled to remove dirt, and polished with 200# emery cloth until it is smooth, and the po...

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 relates to a method for forming a ceramic coating on metal surfaces by argon arc welding-assisted self-propagating. The method comprises the following process steps: (1) batching: taking two or more powdered reactant materials which are capable of performing self-propagating high-temperature synthetic reaction and a powdered metal material which accounts for 0-40% of the total weight of the reactants as a powdered additive material according to chemical dosing proportion for batching; (2) mixing; (3) coating: coating the powdered materials mixed in the step (2) on the surface of a polished workpiece; (4) drying; and (5) performing the argon arc welding-assisted SHS: igniting the workpiece coating by electric arc with 80A current and 60V voltage, thus producing the self-propagating reaction on the workpiece surface coating and then producing the ceramic coating on the metallic matrix surface. The method has the advantages of directly forming and preparing the smooth and dense ceramic coating with high bonding strength, low porosity and high quality on the metal surfaces, high heat utilization efficiency, low coating preparation cost, easy control, small burning loss and sputtering, and being safe and reliable.

Description

(1) Technical field [0001] The invention is a method for preparing a ceramic coating on a metal surface. It belongs to the technical field of material surface engineering. (2) Background technology [0002] In recent years, with the large-scale research and development of ceramic materials, the connection technology of ceramics and ceramics or ceramics and metals has attracted more and more attention. Metal surface coating with ceramic coating can improve material wear resistance, corrosion resistance or high temperature resistance. There are many ways to form ceramic coatings on metal surfaces. Realizing the effective connection between ceramics and metals can further expand the application range of ceramics. However, since ceramics and metals are two types of materials with different properties, there are differences in chemical and physical properties at the interface when they are combined with each other, especially the difference in chemical bonds, and conventional ...

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): C04B35/56
Inventor 陈威谭佃龙汤秀山刘礼华李吉峰张磊
Owner 江阴东大新材料研究院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap