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

Ti-Fe-Ni-C series reaction thermal spraying composite powder and preparation technique thereof

A composite powder, reaction heat technology, applied in metal material coating process, coating, melt spraying and other directions, can solve the problems of limitation, low wear resistance of coating, unfavorable coating performance improvement, etc., to achieve porosity Low, difficult to separate, reducing the effect of TiC agglomerates

Inactive Publication Date: 2008-03-26
UNIV OF SCI & TECH BEIJING
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current carbonization process can only prepare composite powders with a total content of Ti and C elements less than 53wt%, otherwise due to the high content of sucrose in the mixed powder, the oxidation exothermic reaction cannot be avoided during the carbonization process
The content of TiC reinforcing phase in the coating deposited by spraying the composite powder with low content of Ti and C is less than that of the ceramic phase volume ratio of about 90% of the commonly used WC / Co wear-resistant coating, and the wear resistance of the coating is not high
The original carbonization process greatly limits the system composition design of the reactive thermal spraying composite powder prepared with sucrose as the precursor, which is not conducive to the improvement of the performance of the coating prepared by using the powder

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
  • Ti-Fe-Ni-C series reaction thermal spraying composite powder and preparation technique thereof
  • Ti-Fe-Ni-C series reaction thermal spraying composite powder and preparation technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The raw material powder that the present invention adopts is TiFe powder, Ti powder, Ni powder, Fe powder and sucrose, and prepared Ti-Fe-Ni-C system reactive thermal spraying composite powder composition is as shown in Table 1, and its concrete technological process is as follows :

[0028] 1) Mix TiFe powder (2-10 μm), Ti powder (2-10 μm), Ni powder (2-5 μm), Fe powder (2-5 μm) and sucrose according to the ratio;

[0029] 2) The mixed raw material powder is wet-milled on a ball mill for 24 to 72 hours, the volume ratio of the steel balls to the raw material mixture is 4:1, the ball mill speed is 120 rpm, and the ball milling medium is alcohol;

[0030] 3) Dry the uniformly mixed slurry after ball milling at 45-60°C for 4-12 hours;

[0031] 4) Put the block-shaped mixed powder after drying the slurry into a heat treatment furnace protected by nitrogen, and the thickness of the charge is 2-10cm;

[0032] 5) First pass nitrogen protection for 5-10 minutes, the flow rat...

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 present invention is one kind of composite hot sprayed Ti-Fe-Ni-C powder capable of forming composite TiC / Fe-Ni alloy coating and its preparation process. The composite Ti-Fe-Ni-C powder containing Ni in the amount of 32-45 wt% of Fe+Ni content and Ti+C in over 70 wt% is prepared with sucrose as the precursor of C. The TiC / Fe-Ni alloy coating formed through hot spraying with Fe-Ni alloy as the adhering phase has the advantages of small stress, low porosity, high bonding strength between the Fe-Ni alloy and TiC, excellent high temperature antiwear and anticorrosion performance and small TiC grain size.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a Ti-Fe-Ni-C system reactive thermal spraying composite powder and a preparation process thereof, which are used for TiC / Fe-Ni alloy composite coating. Background technique [0002] Ceramic / metal composite coatings, especially carbide / metal composite coatings have excellent wear resistance and are widely used in civil and defense industries such as metallurgy, energy, petrochemicals, automobiles, and aerospace. Research and development of high-quality, high-efficiency, and low-cost ceramic / metal composite coating preparation technology has been one of the most active research topics in the field of wear-resistant materials and surface engineering in recent years. The properties of ceramic / metal composite coatings are mainly related to the reinforcing phase, bonding phase and coating preparation process. [0003] In terms of reinforcing phase, it is different from WC an...

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): C23C4/06B22F9/04B22F1/00C22C14/00C22C30/00C22C38/08C22C38/14
Inventor 黄继华王海涛徐俊龙朱警雷殷常峰张华程东海
Owner UNIV OF SCI & TECH BEIJING
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