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

Rare earth modified Mo2FeB2 base metal ceramic and preparation method thereof

A technology for preparing rare earth elements and ceramics, which is applied in the field of rare earth element modified Mo2FeB2-based cermet and its preparation, can solve the problems of unfavorable application and promotion, increase the introduction of impurities, increase the cost, etc., so as to shorten the preparation period and improve the performance. , cost saving effect

Active Publication Date: 2019-06-11
XI AN JIAOTONG UNIV
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing cermets prepared by spark plasma sintering (SPS) have the advantages of high density, high hardness and good wear resistance, the method of using SPS will greatly increase the cost, which is not conducive to industrial application and promotion. , Too much addition of other alloying elements in the raw material will also increase the cost and increase the possibility of introducing impurities

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
  • Rare earth modified Mo2FeB2 base metal ceramic and preparation method thereof
  • Rare earth modified Mo2FeB2 base metal ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A kind of rare earth element modified Mo of the present invention 2 FeB 2 The preparation method of the base cermet comprises the following steps:

[0032] S1, mixing

[0033] Select Mo, FeB, Fe and rare earth powder with a purity of not less than 99.0%, the rare earth powder is La or Y, and the percentage by weight is: Mo: 45.0-51.0%, FeB: 26.0-33.0%, Fe: 16.0-28.5%, Y: 0 to 1.0%, La: 0 to 1.0%. Configure the powder and mix the powder;

[0034] S2, ball mill

[0035] Put the mixed powder into a ball mill jar, add 40% to 160% of the mass percentage of absolute ethanol as a process control agent, the ball-to-material ratio is 1 to 11:1, vacuumize the ball mill jar and fill it with argon Air for wet grinding, the speed of the ball mill is 140-360r / min, and the milling time is 3-37 hours;

[0036] S3, drying

[0037] Pour the milled slurry into an eggplant-shaped bottle for drying. The drying temperature is 30-110°C, the rotation speed of the eggplant-shaped bottle ...

Embodiment 1

[0044] A method for preparing rare earth Y element-modified Mo2FeB2-based cermets, comprising steps of mixing materials, wet grinding, drying, molding, and vacuum sintering in sequence:

[0045] (1) Mixing step: select Mo, FeB, and Fe powders with a purity of not less than 99.0%, by weight percentage: Mo: 45.0%, FeB: 26.0%, Fe: 28.5%, without adding Y powder or La powder. Configure the powder and mix the powder;

[0046] (2) Ball milling step: Put the mixed powder into a ball mill jar, add 40% of the mass percentage of absolute ethanol as a process control agent, the ball-to-material ratio is 1:1, vacuumize the ball mill jar and fill it Argon gas is carried out wet milling, and ball mill rotating speed is 140r / min, and ball milling time is 3 hours;

[0047] (3) Drying step: Pour the ball-milled slurry into an eggplant-shaped bottle for drying, the drying temperature is 30°C, the rotation speed of the eggplant-shaped bottle is 45r / min, and the drying time is 1 hour, using a ro...

Embodiment 2

[0052] A kind of rare earth Y element modified Mo 2 FeB 2 The preparation method of the base cermet comprises the steps of mixing materials, wet grinding, drying, compression molding and vacuum sintering in sequence:

[0053] (1) Mixing step: select Mo, FeB, Fe powder and Y powder with a purity of not less than 99.0%, and the percentages by weight are: Mo: 46.0%, FeB: 27.0%, Fe: 26.3%, Y: 0.2%. Configure the powder and mix the powder;

[0054] (2) Ball milling step: put the mixed powder into a ball mill jar, add 70% by mass of absolute ethanol as a process control agent, the ball-to-material ratio is 3:1, vacuumize the ball mill jar and fill it Argon is used for wet milling, the speed of the ball mill is 200r / min, and the ball milling time is 11 hours;

[0055] (3) Drying step: Pour the ball-milled slurry into an eggplant-shaped bottle for drying, the drying temperature is 50°C, the rotation speed of the eggplant-shaped bottle is 75r / min, and the drying time is 2.0 hours. ...

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
bending strengthaaaaaaaaaa
bending strengthaaaaaaaaaa
bending strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses rare earth modified Mo2FeB2 base metal ceramic and a preparation method thereof. Mo with the purity being not less than 99.0%, FeB with the purity being not less than 99.0%, Fewith the purity being not less than 99.0% and rare earth powder are mixed, absolute ethyl alcohol is added for ball-milling, then ball-milled pulp is dried and sieved, then compression moulding forming is conducted, vacuum liquid-phase sintering and furnace cooling are conducted, and thus the rare earth modified Mo2FeB2 base metal ceramic with the hardness being 87.7-89.1 HRA is obtained. The rare earth modified Mo2FeB2 base metal ceramic is simple in component and does not contain other chemical elements, the production cost and the possibility of introducing impurities are reduced, the technology is simple, and the cost is low; and by adding rare earth, a crystal boundary is purified, the grain size of a hard phase is refined, and the prepared Mo2FeB2 base metal ceramic can be used forworking conditions of abrasion, corrosion, and interaction of abrasion and corrosion.

Description

technical field [0001] The invention belongs to the technical field of cermets and preparation, in particular to a rare earth element modified Mo 2 FeB 2 Base cermets and methods for their preparation. Background technique [0002] Wear-resistant materials are widely used in metal smelting, mineral mining and other fields. The field of this class of materials has changed dramatically over the past few decades. New wear-resistant materials and their preparation techniques gradually replace traditional materials and their preparation techniques, and have bright application prospects. Ternary boride-based cermets, such as Mo 2 FeB 2 Metal-based cermets have the characteristics of simple raw materials, low manufacturing cost, good sintering performance, and excellent comprehensive mechanical and physical and chemical properties, so they have attracted extensive attention. [0003] Mo 2 FeB 2 Because of its high strength, high hardness, wear resistance, corrosion resistan...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C29/14
Inventor 申宇鹏皇志富坚永鑫张磊李克敏杨明
Owner XI AN JIAOTONG UNIV
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