Method for preparing nano diamond composite coating by millisecond laser cladding

A nano-diamond and composite coating technology, which is applied in the coating process and coating of metal materials, can solve the problems of loose coating structure, slow deposition speed, and high cladding cost

Inactive Publication Date: 2013-11-27
JIANGSU UNIV
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to solve the problem of high cladding costs caused by the necessity of using nano-diamond powder in the existing preparation technology, and to provide a method of adding fine-structure microcrystalline graphite powder and fine-structure catalyst powder to the alloy powder to form cladd

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
  • Method for preparing nano diamond composite coating by millisecond laser cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with specific implementation examples.

[0020] Use sandpaper to grind and polish the oxide layer on the surface of the nickel-based alloy workpiece, then use emulsifier, absolute ethanol to degrease, clean, and dry. Add 10% fine-structure microcrystalline graphite powder and 2%-5% fine-structure catalyst powder to nickel-based alloy powder, place the mixed powder in deionized water, and use an ultrasonic cleaning machine to generate ultrasonic waves with a frequency of 40-58KHz for vibration Mix for 30 minutes, and then dry the mixture to make a pre-layer powder for cladding. Put the nickel-based alloy workpiece to be clad into the vacuum chamber, fix and clamp it horizontally on the workbench, put the obtained preset layer powder into the automatic powder feeding device, and the vacuum degree reaches 10 -3 ~10 -4 Pa. Turn on the millisecond laser, ...

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 discloses a method for preparing a nano diamond composite coating by millisecond laser cladding, which comprises the following steps: adding 8-10% of fine-structure microcrystal graphite powder and 2-5% of catalyst powder into nickel-base alloy powder, putting the mixed powder in deionized water, mixing for 15-30 minutes by ultrasonic vibration, and drying; putting the nickel-base alloy workpiece in a vacuum chamber, wherein the vacuum degree is kept at 10<-3>-10<-4> Pa; and uniformly spreading the dried powder on the workpiece surface by an automatic powder delivery device to form a 0.5-2 mm preset layer, focusing a laser on the preset layer surface by a Dd:YAG laser device, and changing the position of the laser light spot relative to the workpiece to finish the cladding of the workpiece in different positions. The nano-diamond-containing composite coating prepared by the method has the advantages of compact structure, high bonding strength with the base, favorable self-lubricating property and favorable wear resistance.

Description

technical field [0001] The invention belongs to the technical field of surface engineering, and particularly refers to a nickel-based alloy powder doped with fine-structure microcrystalline graphite powder and fine-structure catalyst powder by millisecond laser irradiation, and cladding to prepare a composite coating containing nano-diamond and diamond-like components Methods. Background technique [0002] As the dispersed reinforcement phase of composite materials, nano-diamond powder can significantly improve the hardness, wear resistance and chemical stability of metal substrates. Nano-diamond composite coating not only has the characteristics of strong adhesion and good wear resistance of conventional diamond coatings, but also has the characteristics of flat and smooth nano-diamond surface, small friction coefficient and easy grinding and polishing. It has broad application prospects in the field of precision machining . [0003] At present, the methods for preparing ...

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): C23C24/10
Inventor 任旭东郑腊梅杨慧敏唐少雄占秋波
Owner JIANGSU UNIV
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