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

High-performance metal and ceramic composite powder used for feeding of thermal spraying structure and preparation method for high-performance metal and ceramic composite powder

A metal-ceramic composite, high-performance technology, applied in metal processing equipment, metal material coating technology, coating and other directions, can solve the problem of nano powder with large specific surface area, easy adsorption on the wall of the powder feeding tube, small particle size of nano powder, etc. problems, to achieve the effect of low powder utilization, wide particle size distribution and high compactness

Inactive Publication Date: 2017-10-13
SOUTH CHINA UNIV OF TECH
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano-powders cannot be directly used for thermal spraying, mainly because: 1) The particle size of nano-powders is too small, and it is easy to be burned during thermal spraying; 2) Nano-powders have large specific surface area, high chemical activity, and are easy to adsorb on the powder feeding tube wall, causing difficulty in feeding powder or even blocking the gun

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
  • High-performance metal and ceramic composite powder used for feeding of thermal spraying structure and preparation method for high-performance metal and ceramic composite powder
  • High-performance metal and ceramic composite powder used for feeding of thermal spraying structure and preparation method for high-performance metal and ceramic composite powder
  • High-performance metal and ceramic composite powder used for feeding of thermal spraying structure and preparation method for high-performance metal and ceramic composite powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A method for preparing a high-performance cermet nanocomposite powder used as a thermal spraying structure feed, i.e. a nanocomposite structure feed, comprising the following steps:

[0057] 1) 40wt.%TiB 2 Powder (median particle diameter D50=3~5 μ m, purity 99.5%) and 60wt.% NiCrCoAlY powder (NiCrCoAlY nickel-based commercial spray powder (-320 / +500 mesh fine powder) produced by Chengdu Daguang Thermal Spray Material Co., Ltd.) Put into the mixer and pre-mix for 12h, the speed of the mixer is 80r / min, to obtain NiCrCoAlY-TiB 2 mixed powder;

[0058] 2) NiCrCoAlY-TiB obtained in step 1) 2 Put the mixed powder and GCr15 balls into the ball mill, GCr15 balls and NiCrCoAlY-TiB 2 The mass ratio of mixed powder is 1:10, and add dehydrated alcohol as process control agent, wherein, dehydrated alcohol and NiCrCoAlY-TiB 2 The mass ratio of the mixed powder is 0.6:1. In the atmosphere of high-purity argon as the protective gas, the KEQ-2L omnidirectional planetary ball mill ...

Embodiment 2

[0065] A method for preparing a high-performance cermet nanocomposite powder used as a thermal spraying structure feed, i.e. a nanocomposite structure feed, comprising the following steps:

[0066] 1) 40wt.%TiB 2 The powder and 60wt.% NiCrCoAlY powder are put into the blender and pre-mixed for 12h, and the speed of the blender is 80r / min to obtain NiCrCoAlY-TiB 2 mixed powder;

[0067] 2) NiCrCoAlY-TiB obtained in step 1) 2 Put the mixed powder and GCr15 balls into the ball mill, GCr15 balls and NiCrCoAlY-TiB 2 The mass ratio of mixed powder is 1:10, and add dehydrated alcohol as process control agent, wherein, dehydrated alcohol and NiCrCoAlY-TiB 2 The mass ratio of the mixed powder is 0.3:1. In the atmosphere of high-purity argon as the protective gas, use KEQ-2L omni-directional planetary ball mill to carry out wet milling for 12 hours, and the speed of the ball mill is 350r / min to obtain composite powder A;

[0068] 3) Put the composite powder A obtained in step 2) int...

Embodiment 3

[0074] A method for preparing a high-performance cermet nanocomposite powder used as a thermal spraying structure feed, i.e. a nanocomposite structure feed, comprising the following steps:

[0075] 1) 40wt.%TiB 2 The powder and 60wt.% NiCrCoAlY powder are put into the blender and pre-mixed for 12h, and the speed of the blender is 80r / min to obtain NiCrCoAlY-TiB 2 mixed powder;

[0076] 2) NiCrCoAlY-TiB obtained in step 1) 2 Put the mixed powder and GCr15 balls into the ball mill, GCr15 balls and NiCrCoAlY-TiB 2 The mass ratio of mixed powder is 1:10, and add dehydrated alcohol as process control agent, wherein, dehydrated alcohol and NiCrCoAlY-TiB 2 The mass ratio of the mixed powder is 0.3:1. In the atmosphere of high-purity argon as the protective gas, use KEQ-2L omni-directional planetary ball mill to carry out wet milling for 12 hours, and the speed of the ball mill is 350r / min to obtain composite powder A;

[0077] 3) Put the composite powder A obtained in step 2) int...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of nanocomposite materials, and discloses high-performance metal and ceramic composite powder used for feeding of a thermal spraying structure and a preparation method for the high-performance metal and ceramic composite powder. The method comprises the steps that (1) 20-40wt% of TiB2 powder and 60-80wt% of NiCrCoAlY powder are uniformly mixed so as to obtain NiCrCoAlY-TiB2 mixed powder; (2) the NiCrCoAlY-TiB2 mixed powder and a process control agent are put into a ball mill, are subjected to wet milling in an inert gas atmosphere, are dried and are cooled so as to obtain composite powder; and (3) ball milling treatment is carried out on the composite powder under the inert gas atmosphere, and plasma spheroidization is carried out so as to obtain the high-performance metal and ceramic nano composite powder. The composite powder has the advantages of being resistant to high temperature, wear, thermal fatigue, corrosion and high-temperature oxidation, the fluidity and density are good, and the particle size is mainly concentrated at 5-50 microns. The preparation method has the advantages of being simple and easy to operate and environment-friendly.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials, in particular to a high-performance cermet composite powder (NiCrCoAlY-TiB 2 Composite powder) and its preparation method. Background technique [0002] In my country's natural energy, coal accounts for a considerable proportion, about 77%, which to a certain extent determines its attribute of the main force of energy consumption, accounting for about 70% of natural energy consumption, while the coal consumed for power generation The amount can reach half of its total consumption, among which thermal power generation is the main form of power generation in my country, accounting for more than 80% of the total power generation in the country. Therefore, the safe operation of thermal power generating units is very important. The primary task to ensure the safe and economical operation of thermal power generating units is to reduce the forced shutdown accidents of the units. The superheater ...

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): B22F9/04B22F1/00C23C4/06C23C4/129
CPCC23C4/06C23C4/129B22F9/04B22F2009/043B22F1/14
Inventor 车晓舟王记中曾德长
Owner SOUTH CHINA 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